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href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//ur'><div title='Urdu' class='sprite-isprt-web-pk flag-ur'>🇵🇰</div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//hi'><div title='Hindi' class='sprite-isprt-web-in flag-hi'>🇮🇳</div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//ar'><div title='Arabic' class='sprite-isprt-web-ae flag-ar'>🇦🇪</div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//sr'><div title='Serbian' class='sprite-isprt-web-rs flag-sr'>🇷🇸</div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//bn'><div title='Bangla' class='sprite-isprt-web-bd flag-bn'>🇧🇩</div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//bs'><div title='Bosnian' class='sprite-isprt-web-ba flag-bs'>🇧🇦</div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//hr'><div title='Croatian' class='sprite-isprt-web-hr flag-hr'>🇭🇷</div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//tr'><div title='Turkish' class='sprite-isprt-web-tr flag-tr'>🇹🇷</div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//uk'><div title='Ukrainian' class='sprite-isprt-web-ua flag-uk'>🇺🇦</div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//cs'><div title='Czech' class='sprite-isprt-web-cz flag-cs'>🇨🇿</div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//be'><div title='Belarusian' class='sprite-isprt-web-by flag-be'>🇧🇾</div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//km'><div title='Khmer' class='sprite-isprt-web-kh flag-km'>🇰🇭</div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//lo'><div title='Lao' class='sprite-isprt-web-la flag-lo'>🇱🇦</div></a></div><div id='hdrlang-navigation'><div id='hdrlang-navigation-inner' class='hdrlang-navigation'><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update/' class='lang-en'><div class='item'><div class='flag sprite-isprt-web-gb'></div><span class='name'>English</span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//cn' class='lang-zh-CN'><div class='item'><div class='flag sprite-isprt-web-cn'></div><span class='name'>Chinese <span>- 简体中文</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//jp' class='lang-ja'><div class='item'><div class='flag sprite-isprt-web-jp'></div><span class='name'>Japanese <span>- 日本</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//es' class='lang-es'><div class='item'><div class='flag sprite-isprt-web-es'></div><span class='name'>Spanish <span>- español</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//kr' class='lang-ko'><div class='item'><div class='flag sprite-isprt-web-kr'></div><span class='name'>Korean <span>- 한국의</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//ru' class='lang-ru'><div class='item'><div class='flag sprite-isprt-web-ru'></div><span class='name'>Russian <span>- русский</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//hk' class='lang-zh-TW'><div class='item'><div class='flag sprite-isprt-web-hk'></div><span class='name'>Traditional Chinese <span>- 繁體中文</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//fr' class='lang-fr'><div class='item'><div class='flag sprite-isprt-web-fr'></div><span class='name'>French <span>- Francais</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//pl' class='lang-pl'><div class='item'><div class='flag sprite-isprt-web-pl'></div><span class='name'>Polish <span>- Polski</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//de' class='lang-de'><div class='item'><div class='flag sprite-isprt-web-de'></div><span class='name'>German <span>- Deutsch</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//pt' class='lang-pt'><div class='item'><div class='flag sprite-isprt-web-br'></div><span class='name'>Portuguese <span>- Português</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//vn' class='lang-vi'><div class='item'><div class='flag sprite-isprt-web-vn'></div><span class='name'>Vietnamese <span>- Tiếng Việt</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//it' class='lang-it'><div class='item'><div class='flag sprite-isprt-web-it'>🇮🇹</div><span class='name'>Italian <span>- Italiano</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//id' class='lang-id'><div class='item'><div class='flag sprite-isprt-web-id'>🇮🇩</div><span class='name'>Indonesian <span>- bahasa Indonesia</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//nl' class='lang-nl'><div class='item'><div class='flag sprite-isprt-web-nl'>🇳🇱</div><span class='name'>Dutch <span>- Nederlands</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//fa' class='lang-fa'><div class='item'><div class='flag sprite-isprt-web-ir'>🇮🇷</div><span class='name'>Persian <span>- فارسی</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//th' class='lang-th'><div class='item'><div class='flag sprite-isprt-web-th'>🇹🇭</div><span class='name'>Thai <span>- ภาษาไทย</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//hu' class='lang-hu'><div class='item'><div class='flag sprite-isprt-web-hu'>🇭🇺</div><span class='name'>Hungarian <span>- Magyar</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//el' class='lang-el'><div class='item'><div class='flag sprite-isprt-web-gr'>🇬🇷</div><span class='name'>Greek <span>- Ελληνικά</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//ro' class='lang-ro'><div class='item'><div class='flag sprite-isprt-web-ro'>🇷🇴</div><span class='name'>Romanian <span>- Română</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//bg' class='lang-bg'><div class='item'><div class='flag sprite-isprt-web-bg'>🇧🇬</div><span class='name'>Bulgarian <span>- български</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//ur' class='lang-ur'><div class='item'><div class='flag sprite-isprt-web-pk'>🇵🇰</div><span class='name'>Urdu <span>- اردو</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//hi' class='lang-hi'><div class='item'><div class='flag sprite-isprt-web-in'>🇮🇳</div><span class='name'>Hindi <span>- हिंदी</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//ar' class='lang-ar'><div class='item'><div class='flag sprite-isprt-web-ae'>🇦🇪</div><span class='name'>Arabic <span>- العربية</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//sr' class='lang-sr'><div class='item'><div class='flag sprite-isprt-web-rs'>🇷🇸</div><span class='name'>Serbian <span>- Српски</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//bn' class='lang-bn'><div class='item'><div class='flag sprite-isprt-web-bd'>🇧🇩</div><span class='name'>Bangla <span>- বাংলা</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//bs' class='lang-bs'><div class='item'><div class='flag sprite-isprt-web-ba'>🇧🇦</div><span class='name'>Bosnian <span>- босански</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//hr' class='lang-hr'><div class='item'><div class='flag sprite-isprt-web-hr'>🇭🇷</div><span class='name'>Croatian <span>- hrvatski</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//tr' class='lang-tr'><div class='item'><div class='flag sprite-isprt-web-tr'>🇹🇷</div><span class='name'>Turkish <span>- Türkçe</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//uk' class='lang-uk'><div class='item'><div class='flag sprite-isprt-web-ua'>🇺🇦</div><span class='name'>Ukrainian <span>- українська</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//cs' class='lang-cs'><div class='item'><div class='flag sprite-isprt-web-cz'>🇨🇿</div><span class='name'>Czech <span>- čeština</span></span></div></a><a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//be' class='lang-be'><div class='item'><div class='flag sprite-isprt-web-by'>🇧🇾</div><span class='name'>Belarusian <span>- беларускі</span></span></div></a><a 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update</div></h1></div><script type='text/javascript'> ; if (!isMobileUA) { fitLine('#h1header1',.88,{maxfs:45});fitLine('#h1header2',.88,{maxfs:38}); }; </script><style>.section-outer {text-align: initial;}.section-content {max-width: 95%;width: 1100px;font-size: 18px;min-height: 300px;text-align: initial;margin-top: 10px;margin-bottom: 10px;line-height: 1.8;margin-left: auto;margin-right: auto;}.section-content-tight {min-height: 0px;}.section-content-alt {background-color: #f0f0f0;border-top: 1px solid #ccc;border-bottom: 1px solid #ddd};.section-banner {background-size: 100%;background: url(https://aqicn.org/images//bluesky-banner-panoramic.jpg) no-repeat center bottom #eee;margin-top: -2px;z-index: -1;border-bottom: 1px solid #888;width: 100%;}.h2-title {font-family: inherit;font-size: 1.1em;overflow: hidden;text-align: center;text-transform: capitalize;}.h2-title:before,.h2-title:after {background-color: #ddd;content: '';display: inline-block;height: 1px;position: 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style='color:#888;font-size:13px;word-break: break-all;'>Udio: <a href='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update/hr/'>aqicn.org/faq/2016-08-10/ozone-aqi-scale-update/hr/</a></i><br><div class='entry-content' ng-controller='MainController as ctrl'> <div style='float:right;padding-left:20px;text-align:center;max-width:100%;width:500px;'> <img src='/images/nowcast/ozone-as-a-secondary-pollutant.png' width=100%> <div style='font-size: 80%'> Introduction to Weather and Climate,<br>Univ. of Arizona (<a href='http://www.atmo.arizona.edu/courses/spring16/atmo170a1s1/online_class/CONTENTS.html' target=_>credits</a>) </div> </div> <p class='bigletter'>Prošlo je već nekoliko mjeseci otkako je US EPA ažurirala svoj AQI standard za granične točke ozona od 8 sati <sup style='line-height: 1;font-family: sans-serif;font-size: 80%;'><a href='#footnote-1'>[1]</a></sup> . Ovo je definitivno pozitivan korak prema jačanju kvalitete zraka u SAD-u, budući da je američki EPA standard zapravo bio jedan od najmanje konzervativnih standarda za ozon, u usporedbi, na primjer, sa sličnim standardima u Indiji, Kini ili Europi!</p> <p>Ali što je još zanimljivije, <a href='https://www.airnow.gov'>AirNow</a> je nedavno napravio korak dalje uvođenjem formule Ozone <a href='/faq/2015-03-15/air-quality-nowcast-a-beginners-guide/hr/'>NowCast</a> , koja omogućuje korištenje ponderirane standardne prekidne točke od 8 sati umjesto prekidne točke od 1 sata. Ova promjena, o kojoj AirNow tim nije naširoko komunicirao javnosti, čini značajnu promjenu u načinu na koji se izvještava o Ozon AQI, a to je ono što ćemo promatrati u ovom članku.</p> <center><br>-<svg xmlns="http://www.w3.org/2000/svg" width="28" height="28" version="1" viewBox="0 0 26 26" enable-background="new 0 0 26 26"><path d="M 15.65625 -0.03125 C 14.280846 -0.03760636 12.828752 0.09254274 11.3125 0.40625 C 8.28651 1.0323169 5.7746616 2.1709106 3.96875 3.59375 C 2.3885774 4.8387345 1.3097647 6.3321654 1.0625 7.96875 A 1.0001 1.0001 0 0 0 1 8.40625 C 1 8.4709766 0.99753847 8.5296394 1 8.59375 C 0.99939321 8.6245955 1 8.6565744 1 8.6875 C 1.0067678 8.8049913 1.0164368 8.9159604 1.03125 9.03125 C 1.0536237 9.2185949 1.1014372 9.4156735 1.15625 9.59375 C 1.4590854 10.826485 2.2046296 11.91918 3.21875 12.78125 C 4.0779092 13.511593 5.1369309 14.083861 6.3125 14.53125 A 1.0001 1.0001 0 0 0 6.53125 14.9375 C 8.1339345 16.910035 12.101162 19.118434 18.1875 18.59375 A 1.0043849 1.0043849 0 0 0 18 16.59375 C 14.906411 16.860439 12.500325 16.269357 10.78125 15.5 C 14.30154 15.772761 18.245209 15.070028 21.71875 12.96875 A 1.0021949 1.0021949 0 1 0 20.6875 11.25 C 16.887924 13.548509 12.317006 14.000584 8.78125 13.21875 C 8.6725971 13.194724 8.5753958 13.151278 8.46875 13.125 C 10.108287 13.189898 11.88322 13.060799 13.6875 12.6875 C 16.718701 12.060355 19.36029 10.886006 21.21875 9.4375 C 23.067114 7.9968631 24.272087 6.1533076 23.875 4.21875 C 23.8732 4.20861 23.8769 4.197602 23.875 4.1875 C 23.513143 2.2541955 21.685558 1.0369822 19.4375 0.4375 C 18.307598 0.13619269 17.031654 -0.02489364 15.65625 -0.03125 z M 15.65625 1.96875 C 16.883971 1.97489 18.004902 2.1263073 18.9375 2.375 C 20.802695 2.8723854 21.754612 3.7133252 21.90625 4.5625 A 1.0001 1.0001 0 0 0 21.9375 4.625 C 22.12047 5.4788616 21.54154 6.6735055 20 7.875 C 18.45846 9.0764945 16.081299 10.145895 13.3125 10.71875 C 10.546306 11.291066 7.7660826 11.269646 5.8125 10.78125 C 4.8357087 10.537052 4.0847823 10.157122 3.625 9.78125 C 3.3682882 9.5713881 3.1893221 9.3858538 3.09375 9.1875 C 3.0413411 8.9743851 3.0082478 8.7545393 3 8.53125 C 3.0633474 7.4789308 3.7648202 6.2771492 5.1875 5.15625 C 6.6815884 3.9790894 8.91349 2.9489331 11.6875 2.375 C 13.071248 2.0887073 14.428529 1.9626064 15.65625 1.96875 z M 15.96875 3.65625 C 14.93792 3.617106 13.843984 3.69192 12.71875 3.90625 A 1.0001 1.0001 0 0 0 12.6875 3.9375 C 9.8940815 4.582135 7.6159262 5.8506824 6.5625 7.5625 A 1.0001 1.0001 0 1 0 8.25 8.625 C 8.7942179 7.740646 10.701734 6.434394 13.09375 5.875 C 13.10453 5.87295 13.11421 5.87702 13.125 5.875 C 15.064267 5.5112859 17.031887 5.6468794 18.03125 6.03125 A 1.0040202 1.0040202 0 0 0 18.75 4.15625 C 17.952461 3.8495042 16.99958 3.6953943 15.96875 3.65625 z M 9.15625 17.59375 A 1.0001 1.0001 0 0 0 8.5625 19.25 C 8.5625 19.25 11.033033 22.015963 15.53125 21.90625 A 1.0004882 1.0004882 0 1 0 15.46875 19.90625 C 11.766967 19.996537 10.0625 17.9375 10.0625 17.9375 A 1.0001 1.0001 0 0 0 9.15625 17.59375 z M 8.125 20.1875 A 1.0001 1.0001 0 0 0 7.40625 21.65625 C 7.40625 21.65625 8.6869767 23.974979 11.65625 24.09375 A 1.001098 1.001098 0 0 0 11.75 22.09375 C 9.7192733 22.012521 9.1875 20.75 9.1875 20.75 A 1.0001 1.0001 0 0 0 8.21875 20.1875 A 1.0001 1.0001 0 0 0 8.125 20.1875 z M 7.59375 23.0625 A 1.0001 1.0001 0 0 0 7.4375 23.09375 A 1.0001 1.0001 0 0 0 6.9375 23.34375 C 6.9375 23.34375 6.19375 24 5.09375 24 A 1.0001 1.0001 0 1 0 5.09375 26 C 6.99375 26 8.28125 24.84375 8.28125 24.84375 A 1.0001 1.0001 0 0 0 7.59375 23.0625 z" color="#000" ></path></svg>-<br><br></center> <style type='text/css'>section {margin-top:20px;margin-bottom: 80px;}@media only screen and (max-width: 800px) { border-top: 1px solid #ccc;}@media only screen and (min-width: 800px) { section {padding-left: 20px;border-left: 3px solid #f8f8f8;}}</style><h2><p>Zagađenje ozonom: globalni problem</p></h2><section><p class='bigletter'>Prije nego što uđemo u detalje formule Now Cast, vrijedi napraviti korak unatrag i pogledati zagađenje ozonom kao globalni problem. Simulacija ukupne atmosferske koncentracije ozona koju je provela <a href='https://www.ncdc.noaa.gov/data-access/model-data/model-datasets/global-forcast-system-gfs'>NOAA</a> daje dobar pregled područja s visokom/niskom koncentracijom ozona, ali također pokazuje kako globalni klimatski uvjeti utječu na prekogranično onečišćenje.</p> <div style='background-color: #f8f8f8;padding: 1px 5px;border: 1px solid #eee;'> <center> <small> Real-time Ozone Concentration simulation total using GOA <sup style='line-height: 1;font-family: sans-serif;font-size: 80%;'><a href='#footnote-2'>[2]</a></sup> and the GFS<sup style='line-height: 1;font-family: sans-serif;font-size: 80%;'><a href='#footnote-3'>[3]</a></sup> model </small> </center> <div id='atmospheric-ozone-realtime-map' style='width:100%;height:420px;'></div> <center><div id='scale-label' style='font-size:80%'> Forecasted Total Atmospheric Ozone Concentration (in <a href='https://en.wikipedia.org/wiki/Dobson_unit'>Dobson unit</a>) </div></center> <center><div id='scale-color' style='max-width: 480px;width: 100%;'></div></center> </div> <p>Gornja simulacija pokazuje ukupnu koncentraciju u atmosferi, od površine do visine od 20 km, i stoga sadrži i dobar ozon ("ozonski omotač" u gornjoj stratosferi), kao i loš ozon u <a href='http://scied.ucar.edu/shortcontent/troposphere-overview'>troposferi</a> .</p> <p>Kada se govori o onečišćenju ozonom, troposferski ozon, a posebno koncentracija na površini, bitna je za kvantificiranje utjecaja na zdravlje. Štoviše, troposferski ozon ima dnevni ciklus, s vrhuncem onečišćenja u popodnevnim satima kada temperatura dosegne svoj maksimum, a onečišćenja gotovo da nema tijekom noći. Ovaj se ciklus može jasno vidjeti u donjoj animaciji, koja se temelji na prognoziranoj koncentraciji u tlu.</p> <div style='background-color: #f8f8f8;padding: 1px 5px;border: 1px solid #eee;'> <center> <small> Real-time Ozone Concentration simulation total using GOA and the SILAM<sup style='line-height: 1;font-family: sans-serif;font-size: 80%;'><a href='#footnote-4'>[4]</a></sup> model </small> </center> <div id='tropospheric-ozone-realtime-map' style='width:100%;height:420px;'></div> <center><div style='font-size:80%'> Forecasted Surface Ozone Concentration (converted to AQI) <center><div id='tropospheric-scale-color' style='max-width: 480px;width: 100%;'></div></center> </div></center> </div> <p>Bez iznenađenja, onečišćenje ozonom još uvijek je globalni problem čak i za koncentraciju na površini (zemlje na južnoj hemisferi imale bi veću koncentraciju tijekom ljeta).</p> <p>Gledajući posebno Kinu, ozon zapravo sve češće postaje primarni zagađivač, nadmašujući onečišćenje PM <sub>2,5</sub> . Glavno objašnjenje je da su svi nedavni napori učinjeni za smanjenje onečišćenja zraka u Kini stvarno učinkoviti i da je koncentracija PM <sub>2,5</sub> značajno smanjena <sup style='line-height: 1;font-family: sans-serif;font-size: 80%;'><a href='#footnote-5'>[5]</a></sup> .</p> <p>Štoviše, PM onečišćenje zapravo djeluje kao hladnjak globalnog zatopljenja (tj. smanjuje globalno zagrijavanje reflektirajući sunčevu svjetlost). Dakle, kada se onečišćenje PM smanji, smanjuje se i broj dana plavog neba (to je dobro!), ali kao nuspojava povećava se najveća dnevna temperatura. A budući da je temperatura jedan od elemenata koji utječe na proizvodnju ozona, povišena temperatura također znači i povećanje ozona</p> </p> <center><br>-<svg xmlns="http://www.w3.org/2000/svg" width="28" height="28" version="1" viewBox="0 0 26 26" enable-background="new 0 0 26 26"><path d="M 15.65625 -0.03125 C 14.280846 -0.03760636 12.828752 0.09254274 11.3125 0.40625 C 8.28651 1.0323169 5.7746616 2.1709106 3.96875 3.59375 C 2.3885774 4.8387345 1.3097647 6.3321654 1.0625 7.96875 A 1.0001 1.0001 0 0 0 1 8.40625 C 1 8.4709766 0.99753847 8.5296394 1 8.59375 C 0.99939321 8.6245955 1 8.6565744 1 8.6875 C 1.0067678 8.8049913 1.0164368 8.9159604 1.03125 9.03125 C 1.0536237 9.2185949 1.1014372 9.4156735 1.15625 9.59375 C 1.4590854 10.826485 2.2046296 11.91918 3.21875 12.78125 C 4.0779092 13.511593 5.1369309 14.083861 6.3125 14.53125 A 1.0001 1.0001 0 0 0 6.53125 14.9375 C 8.1339345 16.910035 12.101162 19.118434 18.1875 18.59375 A 1.0043849 1.0043849 0 0 0 18 16.59375 C 14.906411 16.860439 12.500325 16.269357 10.78125 15.5 C 14.30154 15.772761 18.245209 15.070028 21.71875 12.96875 A 1.0021949 1.0021949 0 1 0 20.6875 11.25 C 16.887924 13.548509 12.317006 14.000584 8.78125 13.21875 C 8.6725971 13.194724 8.5753958 13.151278 8.46875 13.125 C 10.108287 13.189898 11.88322 13.060799 13.6875 12.6875 C 16.718701 12.060355 19.36029 10.886006 21.21875 9.4375 C 23.067114 7.9968631 24.272087 6.1533076 23.875 4.21875 C 23.8732 4.20861 23.8769 4.197602 23.875 4.1875 C 23.513143 2.2541955 21.685558 1.0369822 19.4375 0.4375 C 18.307598 0.13619269 17.031654 -0.02489364 15.65625 -0.03125 z M 15.65625 1.96875 C 16.883971 1.97489 18.004902 2.1263073 18.9375 2.375 C 20.802695 2.8723854 21.754612 3.7133252 21.90625 4.5625 A 1.0001 1.0001 0 0 0 21.9375 4.625 C 22.12047 5.4788616 21.54154 6.6735055 20 7.875 C 18.45846 9.0764945 16.081299 10.145895 13.3125 10.71875 C 10.546306 11.291066 7.7660826 11.269646 5.8125 10.78125 C 4.8357087 10.537052 4.0847823 10.157122 3.625 9.78125 C 3.3682882 9.5713881 3.1893221 9.3858538 3.09375 9.1875 C 3.0413411 8.9743851 3.0082478 8.7545393 3 8.53125 C 3.0633474 7.4789308 3.7648202 6.2771492 5.1875 5.15625 C 6.6815884 3.9790894 8.91349 2.9489331 11.6875 2.375 C 13.071248 2.0887073 14.428529 1.9626064 15.65625 1.96875 z M 15.96875 3.65625 C 14.93792 3.617106 13.843984 3.69192 12.71875 3.90625 A 1.0001 1.0001 0 0 0 12.6875 3.9375 C 9.8940815 4.582135 7.6159262 5.8506824 6.5625 7.5625 A 1.0001 1.0001 0 1 0 8.25 8.625 C 8.7942179 7.740646 10.701734 6.434394 13.09375 5.875 C 13.10453 5.87295 13.11421 5.87702 13.125 5.875 C 15.064267 5.5112859 17.031887 5.6468794 18.03125 6.03125 A 1.0040202 1.0040202 0 0 0 18.75 4.15625 C 17.952461 3.8495042 16.99958 3.6953943 15.96875 3.65625 z M 9.15625 17.59375 A 1.0001 1.0001 0 0 0 8.5625 19.25 C 8.5625 19.25 11.033033 22.015963 15.53125 21.90625 A 1.0004882 1.0004882 0 1 0 15.46875 19.90625 C 11.766967 19.996537 10.0625 17.9375 10.0625 17.9375 A 1.0001 1.0001 0 0 0 9.15625 17.59375 z M 8.125 20.1875 A 1.0001 1.0001 0 0 0 7.40625 21.65625 C 7.40625 21.65625 8.6869767 23.974979 11.65625 24.09375 A 1.001098 1.001098 0 0 0 11.75 22.09375 C 9.7192733 22.012521 9.1875 20.75 9.1875 20.75 A 1.0001 1.0001 0 0 0 8.21875 20.1875 A 1.0001 1.0001 0 0 0 8.125 20.1875 z M 7.59375 23.0625 A 1.0001 1.0001 0 0 0 7.4375 23.09375 A 1.0001 1.0001 0 0 0 6.9375 23.34375 C 6.9375 23.34375 6.19375 24 5.09375 24 A 1.0001 1.0001 0 1 0 5.09375 26 C 6.99375 26 8.28125 24.84375 8.28125 24.84375 A 1.0001 1.0001 0 0 0 7.59375 23.0625 z" color="#000" ></path></svg>-<br><br></center> <style type="text/css"> .aqigraph .title { display: inline-block; font-size: 90%; text-shadow: 1px 1px 1px white; color:#444; line-height: 1.2; margin: 0 0 5px 0; } .aqigraph .title .wrong { font-size: 90%; color:red; } .aqigraph .title .good { font-size: 90%; color:#0086c8; } .aqigraph .axis path, .axis line { fill: none; font-size: 12px; stroke: black; shape-rendering: crispEdges; } .ozonescale { display: inline-block; } .ozonescale path { stroke: steelblue; fill: none; } .aqigraph { font-size:15px; border:1px solid #cccccc; background-color:#f8f8f8; display:inline-block;width:100%;padding:10px; text-align: left; color:#888888; margin: 0 0 5px 0; box-sizing: border-box; } .nowcast-city { margin :3px; padding: 3px; border: 1px solid #888; cursor: pointer; background: white; } .nowcast-city:hover { background: #888; border-color:#444; color:white; } .nowcast-city.selected { background: #0086c8; color:white; } </style> </section><h2><p>Usporedni Instant Cast i Now Cast AQI</p></h2><section><p>Sada kada je poznato da onečišćenje ozonom postaje glavni zagađivač tijekom vrućih ljetnih dana, još je važnije u potpunosti razumjeti utjecaj izračuna AQI za ozon na ukupni AQI.</p> <p>Dva grafikona u nastavku prikazuju AQI za 5 različitih gradova u Kini. Grafikon na vrhu prikazuje AQI kakav je danas objavljen na aqicn.org (koristeći formulu za instant cast), a grafikon ispod prikazuje AQI kakav bi bio korištenjem AirNow NowCast AQI formule.</p> <div class='aqigraph'> <center><div id='citySelector' ></div></center> </div> <div class='aqigraph'> <div id='aqi-graph-width'></div> <div class='title'>Ozone InstantCast Air Quality Index <span class='good'>(Reference AQI from the World Air Quality Index, based on hourly readings)</span> </div> <div id='waqiOzoneInstantAQI'></div> </div><div class='aqigraph'> <div class='title'>Ozone NowCast Air Quality Index based on US EPA NowCast 2016 formula <span class='wrong'>(please do not use as reference - this graph contains incorrect AQI values)</span> </div> <div id='usepaOzoneNowcastAQI'></div> </div> <p>Najupečatljiviji problem s NowCast AQI-jem je taj što ima tendenciju <i>premašiti</i> i prijaviti ekstremno visoke AQI-je kada je stvarni AQI (prošlih podataka po satu) nizak. Na primjer:</p> <ul> <li> For Beijing on Thursday August 3rd as 11PM, the Now Cast AQI is reporting an AQI for <code style='background-color:#cc0033;color:white'>158</code> (Unhealthy) while the actual AQI is <code style='background-color:#009966;color:white'>45</code> (Good). <li> For Shanghai on Friday 29th July at 20PM, the Now Cast AQI is reporting an AQI for <code style='background-color:#cc0033;color:white'>180</code> (Unhealthy) while the actual AQI is <code style='background-color:#009966;color:white'>50</code> (Good). </ul> Similar overshoot patterns exist for the other cities. That's really bad for the Now Cast (seriously), since, when it comes to make a decision about, for instance, going out for a walk, if the published AQI does not reflect the current condition, then there is no point in calling it a "now" AQI... </p> <center><br>-<svg xmlns="http://www.w3.org/2000/svg" width="28" height="28" version="1" viewBox="0 0 26 26" enable-background="new 0 0 26 26"><path d="M 15.65625 -0.03125 C 14.280846 -0.03760636 12.828752 0.09254274 11.3125 0.40625 C 8.28651 1.0323169 5.7746616 2.1709106 3.96875 3.59375 C 2.3885774 4.8387345 1.3097647 6.3321654 1.0625 7.96875 A 1.0001 1.0001 0 0 0 1 8.40625 C 1 8.4709766 0.99753847 8.5296394 1 8.59375 C 0.99939321 8.6245955 1 8.6565744 1 8.6875 C 1.0067678 8.8049913 1.0164368 8.9159604 1.03125 9.03125 C 1.0536237 9.2185949 1.1014372 9.4156735 1.15625 9.59375 C 1.4590854 10.826485 2.2046296 11.91918 3.21875 12.78125 C 4.0779092 13.511593 5.1369309 14.083861 6.3125 14.53125 A 1.0001 1.0001 0 0 0 6.53125 14.9375 C 8.1339345 16.910035 12.101162 19.118434 18.1875 18.59375 A 1.0043849 1.0043849 0 0 0 18 16.59375 C 14.906411 16.860439 12.500325 16.269357 10.78125 15.5 C 14.30154 15.772761 18.245209 15.070028 21.71875 12.96875 A 1.0021949 1.0021949 0 1 0 20.6875 11.25 C 16.887924 13.548509 12.317006 14.000584 8.78125 13.21875 C 8.6725971 13.194724 8.5753958 13.151278 8.46875 13.125 C 10.108287 13.189898 11.88322 13.060799 13.6875 12.6875 C 16.718701 12.060355 19.36029 10.886006 21.21875 9.4375 C 23.067114 7.9968631 24.272087 6.1533076 23.875 4.21875 C 23.8732 4.20861 23.8769 4.197602 23.875 4.1875 C 23.513143 2.2541955 21.685558 1.0369822 19.4375 0.4375 C 18.307598 0.13619269 17.031654 -0.02489364 15.65625 -0.03125 z M 15.65625 1.96875 C 16.883971 1.97489 18.004902 2.1263073 18.9375 2.375 C 20.802695 2.8723854 21.754612 3.7133252 21.90625 4.5625 A 1.0001 1.0001 0 0 0 21.9375 4.625 C 22.12047 5.4788616 21.54154 6.6735055 20 7.875 C 18.45846 9.0764945 16.081299 10.145895 13.3125 10.71875 C 10.546306 11.291066 7.7660826 11.269646 5.8125 10.78125 C 4.8357087 10.537052 4.0847823 10.157122 3.625 9.78125 C 3.3682882 9.5713881 3.1893221 9.3858538 3.09375 9.1875 C 3.0413411 8.9743851 3.0082478 8.7545393 3 8.53125 C 3.0633474 7.4789308 3.7648202 6.2771492 5.1875 5.15625 C 6.6815884 3.9790894 8.91349 2.9489331 11.6875 2.375 C 13.071248 2.0887073 14.428529 1.9626064 15.65625 1.96875 z M 15.96875 3.65625 C 14.93792 3.617106 13.843984 3.69192 12.71875 3.90625 A 1.0001 1.0001 0 0 0 12.6875 3.9375 C 9.8940815 4.582135 7.6159262 5.8506824 6.5625 7.5625 A 1.0001 1.0001 0 1 0 8.25 8.625 C 8.7942179 7.740646 10.701734 6.434394 13.09375 5.875 C 13.10453 5.87295 13.11421 5.87702 13.125 5.875 C 15.064267 5.5112859 17.031887 5.6468794 18.03125 6.03125 A 1.0040202 1.0040202 0 0 0 18.75 4.15625 C 17.952461 3.8495042 16.99958 3.6953943 15.96875 3.65625 z M 9.15625 17.59375 A 1.0001 1.0001 0 0 0 8.5625 19.25 C 8.5625 19.25 11.033033 22.015963 15.53125 21.90625 A 1.0004882 1.0004882 0 1 0 15.46875 19.90625 C 11.766967 19.996537 10.0625 17.9375 10.0625 17.9375 A 1.0001 1.0001 0 0 0 9.15625 17.59375 z M 8.125 20.1875 A 1.0001 1.0001 0 0 0 7.40625 21.65625 C 7.40625 21.65625 8.6869767 23.974979 11.65625 24.09375 A 1.001098 1.001098 0 0 0 11.75 22.09375 C 9.7192733 22.012521 9.1875 20.75 9.1875 20.75 A 1.0001 1.0001 0 0 0 8.21875 20.1875 A 1.0001 1.0001 0 0 0 8.125 20.1875 z M 7.59375 23.0625 A 1.0001 1.0001 0 0 0 7.4375 23.09375 A 1.0001 1.0001 0 0 0 6.9375 23.34375 C 6.9375 23.34375 6.19375 24 5.09375 24 A 1.0001 1.0001 0 1 0 5.09375 26 C 6.99375 26 8.28125 24.84375 8.28125 24.84375 A 1.0001 1.0001 0 0 0 7.59375 23.0625 z" color="#000" ></path></svg>-<br><br></center> <p class='bigletter'>Pokušaj finog podešavanja NowCast formule, kao što je to učinjeno za <a href='/faq/2015-03-15/air-quality-nowcast-a-beginners-guide/hr/'>PM <sub>2.5</sub> Now Cast</a> u Aziji, ne funkcionira dobro za Ozone (pogledajte donji grafikon za N=3 sata i minimalnu težinu=.1). Razlog je taj što ozon ima dnevni ciklus s vrhuncima u poslijepodnevnim satima (u korelaciji s vrhom temperature), tako da bi bilo kakva vrsta prosjeka samo pomaknula vrhunac za nekoliko sati. To bi bilo pogrešno, jer ono što je potrebno je prijaviti kvalitetu zraka kakva je sada, a ne kakva je bila prije nekoliko sati.</p> <div class='aqigraph'> <div class='title'>Modified NowCast for Asia (aka NowCast Asia AQI) <span class='wrong'>(please do not use as reference - this graph contains incorrect AQI values)</span> </div> <div id='asiaNowcastAQI' ></div> <div class='title'>NowCast weight factors</div> <div id='asiaNowcastWF' ></div> <center> You can change the NowCast paramters for the above graphs:<br> <span style='font-family:"Times New Roman",serif'> <i style='color:#1166c7'>W<sub>min</sub></i> = <input style='font-size:20px;' type='number' value=.1 class='nowcastparams' id='nowcastwmin'> <span style='color:#888'> and </span> <i style='color:#1166c7'>N</i> = <input style='font-size:20px;' type='number' value=3 class='nowcastparams' id='nowcastn'> </span> </center> </div> <center><br>-<svg xmlns="http://www.w3.org/2000/svg" width="28" height="28" version="1" viewBox="0 0 26 26" enable-background="new 0 0 26 26"><path d="M 15.65625 -0.03125 C 14.280846 -0.03760636 12.828752 0.09254274 11.3125 0.40625 C 8.28651 1.0323169 5.7746616 2.1709106 3.96875 3.59375 C 2.3885774 4.8387345 1.3097647 6.3321654 1.0625 7.96875 A 1.0001 1.0001 0 0 0 1 8.40625 C 1 8.4709766 0.99753847 8.5296394 1 8.59375 C 0.99939321 8.6245955 1 8.6565744 1 8.6875 C 1.0067678 8.8049913 1.0164368 8.9159604 1.03125 9.03125 C 1.0536237 9.2185949 1.1014372 9.4156735 1.15625 9.59375 C 1.4590854 10.826485 2.2046296 11.91918 3.21875 12.78125 C 4.0779092 13.511593 5.1369309 14.083861 6.3125 14.53125 A 1.0001 1.0001 0 0 0 6.53125 14.9375 C 8.1339345 16.910035 12.101162 19.118434 18.1875 18.59375 A 1.0043849 1.0043849 0 0 0 18 16.59375 C 14.906411 16.860439 12.500325 16.269357 10.78125 15.5 C 14.30154 15.772761 18.245209 15.070028 21.71875 12.96875 A 1.0021949 1.0021949 0 1 0 20.6875 11.25 C 16.887924 13.548509 12.317006 14.000584 8.78125 13.21875 C 8.6725971 13.194724 8.5753958 13.151278 8.46875 13.125 C 10.108287 13.189898 11.88322 13.060799 13.6875 12.6875 C 16.718701 12.060355 19.36029 10.886006 21.21875 9.4375 C 23.067114 7.9968631 24.272087 6.1533076 23.875 4.21875 C 23.8732 4.20861 23.8769 4.197602 23.875 4.1875 C 23.513143 2.2541955 21.685558 1.0369822 19.4375 0.4375 C 18.307598 0.13619269 17.031654 -0.02489364 15.65625 -0.03125 z M 15.65625 1.96875 C 16.883971 1.97489 18.004902 2.1263073 18.9375 2.375 C 20.802695 2.8723854 21.754612 3.7133252 21.90625 4.5625 A 1.0001 1.0001 0 0 0 21.9375 4.625 C 22.12047 5.4788616 21.54154 6.6735055 20 7.875 C 18.45846 9.0764945 16.081299 10.145895 13.3125 10.71875 C 10.546306 11.291066 7.7660826 11.269646 5.8125 10.78125 C 4.8357087 10.537052 4.0847823 10.157122 3.625 9.78125 C 3.3682882 9.5713881 3.1893221 9.3858538 3.09375 9.1875 C 3.0413411 8.9743851 3.0082478 8.7545393 3 8.53125 C 3.0633474 7.4789308 3.7648202 6.2771492 5.1875 5.15625 C 6.6815884 3.9790894 8.91349 2.9489331 11.6875 2.375 C 13.071248 2.0887073 14.428529 1.9626064 15.65625 1.96875 z M 15.96875 3.65625 C 14.93792 3.617106 13.843984 3.69192 12.71875 3.90625 A 1.0001 1.0001 0 0 0 12.6875 3.9375 C 9.8940815 4.582135 7.6159262 5.8506824 6.5625 7.5625 A 1.0001 1.0001 0 1 0 8.25 8.625 C 8.7942179 7.740646 10.701734 6.434394 13.09375 5.875 C 13.10453 5.87295 13.11421 5.87702 13.125 5.875 C 15.064267 5.5112859 17.031887 5.6468794 18.03125 6.03125 A 1.0040202 1.0040202 0 0 0 18.75 4.15625 C 17.952461 3.8495042 16.99958 3.6953943 15.96875 3.65625 z M 9.15625 17.59375 A 1.0001 1.0001 0 0 0 8.5625 19.25 C 8.5625 19.25 11.033033 22.015963 15.53125 21.90625 A 1.0004882 1.0004882 0 1 0 15.46875 19.90625 C 11.766967 19.996537 10.0625 17.9375 10.0625 17.9375 A 1.0001 1.0001 0 0 0 9.15625 17.59375 z M 8.125 20.1875 A 1.0001 1.0001 0 0 0 7.40625 21.65625 C 7.40625 21.65625 8.6869767 23.974979 11.65625 24.09375 A 1.001098 1.001098 0 0 0 11.75 22.09375 C 9.7192733 22.012521 9.1875 20.75 9.1875 20.75 A 1.0001 1.0001 0 0 0 8.21875 20.1875 A 1.0001 1.0001 0 0 0 8.125 20.1875 z M 7.59375 23.0625 A 1.0001 1.0001 0 0 0 7.4375 23.09375 A 1.0001 1.0001 0 0 0 6.9375 23.34375 C 6.9375 23.34375 6.19375 24 5.09375 24 A 1.0001 1.0001 0 1 0 5.09375 26 C 6.99375 26 8.28125 24.84375 8.28125 24.84375 A 1.0001 1.0001 0 0 0 7.59375 23.0625 z" color="#000" ></path></svg>-<br><br></center> </section><h2><p>Slabe jednosatne granične točke ozona</p></h2><section><p>Postoji, međutim, problem s trenutačnom formulom Instant Cast za ozon koja se koristi na waqi.info i aqicn.org: To je da se granične točke Instant Cast temelje na US EPA 1-satnom standardu kvalitete zraka, koji je još uvijek među najmanje sigurni standardi za ozon u usporedbi s drugim EPA standardima (vidi grafikon desno) za AQI ispod 200. <div class='ozonescale' style='float:right;border: 1px solid #eee;font-size:80%;background-color: #f8f8f8'><div id='ozonescale1h' ></div><center> <small style='line-height: 1.2;'>ID: Indonezija TH: Tajland CN: Kina IN: Indija US: SAD<br> Pretvorba iz ppb u mg/m3 pomoću <a href='/faq/2015-09-06/ozone-aqi-using-concentrations-in-milligrams-or-ppb/hr/'>STP US</a><br> Oprez: skale osi nisu linearne.</small></center></div></p> <p>Postoji nekoliko razloga za ovaj nizak standard US EPA-e: prvo se USEPA prvo usredotočila na poboljšanje standarda od 8 sati, i to je nešto dobro - budući da se standard od 8 sati koristi za godišnja izvješća. To je ujedno i standard koji se sada koristi u eteru (zajedno s formulom koja se sada koristi), pa je imalo smisla prvo se usredotočiti na ovaj standard, i to unatoč svim problemima vezanim uz formulu koja je sada cast. Najvjerojatnije, US EPA sada radi na istom ažuriranju standarda od 1 sata, ali za to bi moglo trebati dosta vremena i dosta lobiranja.</p> <p>Dakle, dok se čekalo da US EPA poboljša 1-satni standard i postavi standard koji ne zaostaje u usporedbi s drugim svjetskim standardima za ozon, svjetski projekt Indeksa kvalitete zraka razmatrao je postojeće standarde koji bi mogli bolje odražavati utjecaj kvalitete zraka na zdravlje, i to bez potrebe za korištenjem nevažne NowCast formule koja se temelji na 8-satnim prekidnim točkama.</p> </section><h2><p>Ažurirane prijelomne točke ozona Instant Cast</p></h2><section><p>Jedna od opcija koja je razmatrana i koja je odmah odbačena bila je upotreba Instant Casta na temelju prekidnih točaka od 8 sati umjesto prekidnih točaka od 1 sata (kao što se zapravo radi za PM <sub>2.5</sub> , gdje se AQI prijavljuje uz pretpostavku 24 sata izlaganje). Razlog nekorištenja ove otopine za ozon je dnevni ciklus, zbog čega nije jednostavno procijeniti koliko može biti 8-satno izlaganje. Na primjer, ako je AQI 35 u 10 ujutro, što to znači za AQI u 14 popodne? Hoće li biti 80, 120, do 180? To je dosta drugačije od PM-a, gdje se može pretpostaviti da je AQI sličan tijekom dana, pod sličnim uvjetima vidljivosti i vlažnosti <sup style='line-height: 1;font-family: sans-serif;font-size: 80%;'><a href='#footnote-6'>[6]</a></sup> .</p> <p>Za ostale opcije, analiza je obuhvatila postojeće standarde za više od 20 EPA-a diljem svijeta, preporuke <a href='http://apps.who.int/iris/bitstream/10665/69477/1/WHO_SDE_PHE_OEH_06.02_eng.pdf'>WHO</a> -a, preliminarne nalaze svjetskih istraživača iz projekta <a href='http://www.igacproject.org/activities/TOAR'>TOAR</a> i istraživačke radove iz kataloga UNEP <a href='http://www.ccacoalition.org/en/search?search_api_views_fulltext=ozone'>CCA Coalition</a> . Dodatno ograničenje za odabir standarda bilo je korištenje standarda koji je službeno odobren. kao i jedan blizu srednjeg standarda, jer ne bi pretjerano preuveličao Utjecaj na zdravlje, niti ga podcijenio.</p> <p>Čini se da je najbolja opcija CN MEP 1-satni standard, koji je puno sigurniji od US-EPA 1-satnog standarda za AQI ispod 200 (iznad 200, dva su standarda ista). Dva grafikona u nastavku prikazuju Ozone Instant Cast AQI, na temelju starih prijelomnih točaka (gore) i novih prijelomnih točaka (dolje). Imajte na umu da budući da se granične točke ažuriraju samo za AQI između 50 i 200, jedina 'vidljiva' razlika na grafikonima u boji je za <span style='background-color:#ffde33;color:black'>umjereni</span> , <span style='background-color:#ff9933;color:black'>USG</span> i <span style='background-color:#cc0033;color:white'>nezdravi</span> AQI.</p> <div class='aqigraph'> <div class='title'> <b>Former</b> Ozone AQI Standard, using the US EPA 1-hour breakpoints <span class='wrong'>(deprecated on August, 10th 2016)</span> </div> <div id='waqiOzoneInstantAQI1'></div> <br> <div class='title'> <b>New</b> Ozone AQI Standard, using the CN MEP 1-hour breakpoints <span class='good'>(in use starting from August, 11th 2016)</span> </div> <div id='waqiOzoneInstantAQI2'></div> <br> </div> The table below summurize the new 1-hour Ozone breakpoints used for the Instant Cast Ozone calculation. The <a href='/faq/2015-09-06/ozone-aqi-using-concentrations-in-milligrams-or-ppb/hr/'>STP US</a> is used for converting Ozone from mg to ppb. <div style='overflow-x: scroll;'> <table class='fetching' style=''><tr style='min-height:30px;background-color:#eee;line-height:1.3;'><td nowrap width=20% style='height:30px;'>Index Values<td><center>Color coding<td width=20% style='' nowrap>AQI Category</td><td nowrap width=20% >Instant Cast Ozone<br>breakpoints (ppm)<td nowrap width=20% >US EPA 1-hour Ozone<br>breakpoints (ppm)<tr style='min-height:30px;background-color:;line-height:1.3;'><td nowrap width=20% style='height:30px;'>0 - 50<td><center><div style='width:30px;height:18px;background:#009966;color:#ffffff;'></div><td width=20% style='' nowrap>Good</td><td nowrap width=20% >0 - 62.5<td nowrap width=20% >-<tr style='min-height:30px;background-color:;line-height:1.3;'><td nowrap width=20% style='height:30px;'>51 - 100<td><center><div style='width:30px;height:18px;background:#ffde33;color:#000000;'></div><td width=20% style='' nowrap>Moderate</td><td nowrap width=20% >62.5 - 101.5<td nowrap width=20% >-<tr style='min-height:30px;background-color:;line-height:1.3;'><td nowrap width=20% style='height:30px;'>101 – 152<td><center><div style='width:30px;height:18px;background:#ff9933;color:#000000;'></div><td width=20% style='' nowrap>Unhealthy<br><small>for Sensitive Groups</td><td nowrap width=20% >101.5 - 152.5<td nowrap width=20% >125 - 165<tr style='min-height:30px;background-color:;line-height:1.3;'><td nowrap width=20% style='height:30px;'>151 – 200<td><center><div style='width:30px;height:18px;background:#cc0033;color:#ffffff;'></div><td width=20% style='' nowrap>Unhealthy</td><td nowrap width=20% >152.5 - 205<td nowrap width=20% >165 - 205<tr style='min-height:30px;background-color:;line-height:1.3;'><td nowrap width=20% style='height:30px;'>201 – 300<td><center><div style='width:30px;height:18px;background:#660099;color:#ffffff;'></div><td width=20% style='' nowrap>Very Unhealthy</td><td nowrap width=20% >205 - 405<td nowrap width=20% >205 - 405<tr style='min-height:30px;background-color:;line-height:1.3;'><td nowrap width=20% style='height:30px;'>301 – 500<td><center><div style='width:30px;height:18px;background:#7e0023;color:#ffffff;'></div><td width=20% style='' nowrap>Hazardous</td><td nowrap width=20% >405 - 605<td nowrap width=20% >405 - 605</table></div> <center><br>-<svg xmlns="http://www.w3.org/2000/svg" width="28" height="28" version="1" viewBox="0 0 26 26" enable-background="new 0 0 26 26"><path d="M 15.65625 -0.03125 C 14.280846 -0.03760636 12.828752 0.09254274 11.3125 0.40625 C 8.28651 1.0323169 5.7746616 2.1709106 3.96875 3.59375 C 2.3885774 4.8387345 1.3097647 6.3321654 1.0625 7.96875 A 1.0001 1.0001 0 0 0 1 8.40625 C 1 8.4709766 0.99753847 8.5296394 1 8.59375 C 0.99939321 8.6245955 1 8.6565744 1 8.6875 C 1.0067678 8.8049913 1.0164368 8.9159604 1.03125 9.03125 C 1.0536237 9.2185949 1.1014372 9.4156735 1.15625 9.59375 C 1.4590854 10.826485 2.2046296 11.91918 3.21875 12.78125 C 4.0779092 13.511593 5.1369309 14.083861 6.3125 14.53125 A 1.0001 1.0001 0 0 0 6.53125 14.9375 C 8.1339345 16.910035 12.101162 19.118434 18.1875 18.59375 A 1.0043849 1.0043849 0 0 0 18 16.59375 C 14.906411 16.860439 12.500325 16.269357 10.78125 15.5 C 14.30154 15.772761 18.245209 15.070028 21.71875 12.96875 A 1.0021949 1.0021949 0 1 0 20.6875 11.25 C 16.887924 13.548509 12.317006 14.000584 8.78125 13.21875 C 8.6725971 13.194724 8.5753958 13.151278 8.46875 13.125 C 10.108287 13.189898 11.88322 13.060799 13.6875 12.6875 C 16.718701 12.060355 19.36029 10.886006 21.21875 9.4375 C 23.067114 7.9968631 24.272087 6.1533076 23.875 4.21875 C 23.8732 4.20861 23.8769 4.197602 23.875 4.1875 C 23.513143 2.2541955 21.685558 1.0369822 19.4375 0.4375 C 18.307598 0.13619269 17.031654 -0.02489364 15.65625 -0.03125 z M 15.65625 1.96875 C 16.883971 1.97489 18.004902 2.1263073 18.9375 2.375 C 20.802695 2.8723854 21.754612 3.7133252 21.90625 4.5625 A 1.0001 1.0001 0 0 0 21.9375 4.625 C 22.12047 5.4788616 21.54154 6.6735055 20 7.875 C 18.45846 9.0764945 16.081299 10.145895 13.3125 10.71875 C 10.546306 11.291066 7.7660826 11.269646 5.8125 10.78125 C 4.8357087 10.537052 4.0847823 10.157122 3.625 9.78125 C 3.3682882 9.5713881 3.1893221 9.3858538 3.09375 9.1875 C 3.0413411 8.9743851 3.0082478 8.7545393 3 8.53125 C 3.0633474 7.4789308 3.7648202 6.2771492 5.1875 5.15625 C 6.6815884 3.9790894 8.91349 2.9489331 11.6875 2.375 C 13.071248 2.0887073 14.428529 1.9626064 15.65625 1.96875 z M 15.96875 3.65625 C 14.93792 3.617106 13.843984 3.69192 12.71875 3.90625 A 1.0001 1.0001 0 0 0 12.6875 3.9375 C 9.8940815 4.582135 7.6159262 5.8506824 6.5625 7.5625 A 1.0001 1.0001 0 1 0 8.25 8.625 C 8.7942179 7.740646 10.701734 6.434394 13.09375 5.875 C 13.10453 5.87295 13.11421 5.87702 13.125 5.875 C 15.064267 5.5112859 17.031887 5.6468794 18.03125 6.03125 A 1.0040202 1.0040202 0 0 0 18.75 4.15625 C 17.952461 3.8495042 16.99958 3.6953943 15.96875 3.65625 z M 9.15625 17.59375 A 1.0001 1.0001 0 0 0 8.5625 19.25 C 8.5625 19.25 11.033033 22.015963 15.53125 21.90625 A 1.0004882 1.0004882 0 1 0 15.46875 19.90625 C 11.766967 19.996537 10.0625 17.9375 10.0625 17.9375 A 1.0001 1.0001 0 0 0 9.15625 17.59375 z M 8.125 20.1875 A 1.0001 1.0001 0 0 0 7.40625 21.65625 C 7.40625 21.65625 8.6869767 23.974979 11.65625 24.09375 A 1.001098 1.001098 0 0 0 11.75 22.09375 C 9.7192733 22.012521 9.1875 20.75 9.1875 20.75 A 1.0001 1.0001 0 0 0 8.21875 20.1875 A 1.0001 1.0001 0 0 0 8.125 20.1875 z M 7.59375 23.0625 A 1.0001 1.0001 0 0 0 7.4375 23.09375 A 1.0001 1.0001 0 0 0 6.9375 23.34375 C 6.9375 23.34375 6.19375 24 5.09375 24 A 1.0001 1.0001 0 1 0 5.09375 26 C 6.99375 26 8.28125 24.84375 8.28125 24.84375 A 1.0001 1.0001 0 0 0 7.59375 23.0625 z" color="#000" ></path></svg>-<br><br></center> </section><h2><p>Zaključak</p></h2><section>This updated Ozone instant cast breakpoint are effective from August 11th 2016. <script src='/jscripts/d3/d3.min.js?_=20190418.093123&type=script'></script><script src='/jscripts/moment/bundle.min.js?_=20200103.150752&type=script'></script><script src='/air/view/stats/plot.js?_=20190418.093129&type=script'></script><script src='/air/view/stats/nowcast-plot.js?_=20190418.093129&type=script'></script><link href='/air/view/stats/style.css?_=20190418.093129&type=css' rel='stylesheet'/><script src='/jscripts/d3/d3.min.js?_=20190418.093123&type=script'></script><script src='/jscripts/moment/bundle.min.js?_=20200103.150752&type=script'></script><script src='/jscripts/leaflet/leaflet-src.min.js?_=20190418.093124&type=script'></script><link href='/jscripts/leaflet/leaflet.min.css?_=20190418.093124&type=css' rel='stylesheet'/> <script src="/jscripts/bower_components/Leaflet.label/dist/leaflet.label.js"></script> <link href="/jscripts/bower_components/Leaflet.label/dist/leaflet.label.css" rel="stylesheet" /> <style type="text/css"> .cityMarker { background-color: #0086c8; border-color: #0086c8; border-width: 4px; padding: 0; color: white; font-weight: normal; } .cityMarkerYAH { background-color: #c80086; border-color: #c80086; border-width: 4px; padding: 0; color: white; font-weight: normal; } </style> <script type="text/javascript"> function initPage() { initNowCast(d3.select("#citySelector")); } </script> </section><br><br><div style='border-top:1px solid black;width:120px;'></div><small style='line-height:1.4;'><div id='nowcast-footnote-1'>[1] see <a href='https://www.epa.gov/ozone-pollution/2015-national-ambient-air-quality-standards-naaqs-ozone'> 2015 Ozone NAAQS</a></div><div id='nowcast-footnote-2'>[2] GOA is our GlObal Atmosphere real-time simulation tool suite, used to create, in real-time, visualization of large amount of climatic and atmospheric data for web. <a href='/forecast/models/hr/'>more</a>...</div><div id='nowcast-footnote-3'>[3] Global Forecast System - see <a href='https://en.wikipedia.org/wiki/Global_Forecast_System'>wikipedia.org/wiki/Global_Forecast_System</a></div><div id='nowcast-footnote-4'>[4] System for Integrated modeLling of Atmospheric coMposition (Silam) model by the Finnish Meteorological Institute - see <a href='/forecast/world/silam/hr/'>forecast/world/silam/</a></div><div id='nowcast-footnote-5'>[5] See <a href='http://www.chinadaily.com.cn/china/2016-05/24/content_25436676.htm'>http://www.chinadaily.com.cn/china/2016-05/24/content_25436676.htm</a> and <a href='http://www.bjmemc.com.cn/g327/s962/t2537.aspx'>http://www.bjmemc.com.cn/g327/s962/t2537.aspx</a></div><div id='nowcast-footnote-6'>[6] There are many research papers on the correlation between PM air pollution and visibility, for instance <a href='http://aaqr.org/vol12_no6_december2012/2_aaqr-11-11-oa-0220_1049-1061.pdf'> Regression Analyses between Recent Air Quality and Visibility Changes in Megacities at Four Haze Regions in China</a></div></small><script src='/air/faq/content/jsmin/2016.08.05-ozone-aqi-scale-update.min.js?_=1613461762'></script></div></div></div></div><center style='border-top: 1px solid #ccc;padding:20px 0;border-bottom: 1px solid #ccc;'><style>#gaia-section-banner {word-break: break-word;cursor: pointer;font-size: 18px;line-height: 1.6;font-family: "Noto Serif", Cambria, "Palatino Linotype", "Book Antiqua", "URW Palladio L", serif;text-align: center;word-break: break-all;margin: 0;padding: 0px;min-height: 0px;width: auto;max-width: 100%;text-align: center;word-break: break-word;transition: height .5s ease;overflow-y: hidden;}#gaia-section-banner>div>div {width: 33%;/* max-width: 420px; */}#gaia-section-banner a {background-color: rgba(0, 134, 200, .8);color: white;border-radius: 25px;border: none;padding: 8px 20px;margin-left: 18px;line-height: 1.42;}#gaia-section-banner>div {display: flex;align-items: center;justify-content: center;}#gaia-section-banner a div {font-size: 80%;white-space: 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Vjerovatno neće imati utjecaja na širu popilaciju.</td></tr><tr style="background-color:#cc0033;"><td class='aqiwtxt' nowrap="true">151-200</td><td class='aqiwtxt'>nezdrav</td><td class='aqiwtxt'>Svatko može početi osjećati zdravstvene posljedice; članovi osjetljivih skupina mogu imati ozbiljnije zdravstvene posljedice</td></tr><tr style="background-color:#660099;"><td class='aqiwtxt' nowrap="true">201-300</td><td class='aqiwtxt'>Vrlo nezdravo</td><td class='aqiwtxt'>Zdravstvena upozorenja o izvanrednim okolnostima. Veća je vjerojatnost da će cijela populacija biti pogođena.</td></tr><tr style="background-color:#7e0023;"><td class='aqiwtxt' nowrap="true">300+</td><td class='aqiwtxt'>Opasan</td><td class='aqiwtxt'>Upozorenje o zdravlju: svatko može imati ozbiljnije zdravstvene posljedice</td></tr></table></div><br>Kako biste saznali više o kvaliteti zraka i onečišćenju, pogledajte <a href='http://en.wikipedia.org/wiki/Air_quality'>temu o kvaliteti zraka na wikipediji</a> ili <a href='http://www.airnow.gov/index.cfm?action=aqibasics.aqi'>airnow vodič o kvaliteti zraka i vašem zdravlju</a> .<br><br>Za vrlo korisne zdravstvene savjete pekinškog doktora Richarda Saint Cyra, MD, pogledajte blog <a href='http://www.myhealthbeijing.com/'>www.myhealthbeijing.com</a> .<br><br></center></div></div></div><center><br><ins class="adsbygoogle" style="display:block"data-ad-client="ca-pub-0281575029452656"data-ad-slot="2455076269"data-ad-format="auto"></ins><script>(adsbygoogle = window.adsbygoogle || []).push({});</script><style type='text/css'>.usage-notice {line-height:1.5;max-width:95%;width:1000px;margin-top:10px;padding:5px;font-size: 15px;background-color:#ffffff;text-shadow: 1px 1px 1px white;-webkit-box-shadow: 1px 1px 8px -3px rgba(0,0,0,0.3);}</style><div class="textshadowwhite usage-notice" style=''><b>Obavijest o korištenju</b>: Svi podaci o kvaliteti zraka nisu dozvoljeni u trenutku objavljivanja, a zbog osiguranja kvalitete ti se podaci mogu u bilo kojem trenutku mijenjati bez prethodne najave. Projekt <a href='https://aqicn.org'> Indeks svjetske kakvoće zraka </a> iskoristio je svu razumnu vještinu i pažnju pri sastavljanju sadržaja tih informacija i ni pod kojim okolnostima neće <a href='https://aqicn.org'> Svjetski indeks kvaliteta zraka </a> projektni tim ili njegovi agenti odgovorni su za ugovor, prekršaj ili drugačije za bilo kakav gubitak, ozljedu ili štetu koja proizlazi izravno ili neizravno iz opskrbe tim podacima.</div><br><br><br></center><div id="fixed-footer-marker" class="locked"></div><div id="floating-footer" class="footer-overlay floating-footer-overlay footer"></div><div id="fixed-footer" class="footer"><div id="footer-overlay" class="footer-overlay"></div><br><br><center><div id='fixed-footer-menu-buttons-with-text' style='max-width:80%;margin-bottom:20px;display:none;'><a href='javascript:go2home();' class='menubar-text'><div class='fixed-menubar-button'><div class='sprite-isprt-web-home'></div>Home</div></a> <a href='/here/hr/' class='menubar-text'><div 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projektu</h3><br><li><a href='/contact/hr/'>Kontaktirajte projektni tim Svjetskog indeksa kvalitete zraka</a></li><li><a href='/media/hr/'>Komplet za tisak i medije</a></li><br><h3><a href='/research/hr/'>istraživanje kvalitete zraka</a></h3><br><li><a href='/faq/hr/'>Baza znanja i članci o kvaliteti zraka</a></li><li><a href='/research/hr/'>Eksperimentiranje kvalitete zraka</a></li><li><a href='/sensor/hr/'>Analiza senzora kvalitete zraka</a></li><br><h3><a href='/faq/hr/'>Često postavljana pitanja</a></h3><br><li><a href='/sources/hr/'>Izvor podataka o kvaliteti zraka</a></li><li><a href='/faq/2015-03-15/air-quality-nowcast-a-beginners-guide/hr/'>Izračun indeksa kvalitete zraka</a></li><li><a href='/forecast/hr/'>Predviđanje kvalitete zraka</a></li><li><a href='/products/hr/'>Proizvodi za kvalitetu zraka (maske, monitori…)</a></li><li><a href='/api/hr/'>API (Aplikacijsko programsko sučelje)</a></li><li><a href='/data-platform/hr/'>Platforma povijesnih podataka</a></li></div><div 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Belarusian</option><option value='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//km' >ខ្មែរ - Khmer</option><option value='https://aqicn.org/faq/2016-08-10/ozone-aqi-scale-update//lo' >ລາວ - Lao</option></select></div><br><table><tr><td><center><i>Temperature unit:</i><br><span style='font-size:18px'><span style='display:;' id='settings-temp-label-on'>Celcius</span><span style='display:none;' id='settings-temp-label-off'>Fahrenheit</span></span></center></td><td><div class="onoffswitch" onclick='settingsMenu.click("temp")'><input type="checkbox" name="onoffswitch" class="onoffswitch-checkbox" id="settings-temp" checked><label class="onoffswitch-label" for="myonoffswitch"><span class="onoffswitch-inner"></span><span class="onoffswitch-switch"></span></label></div></table></center><br></div><div style='display:none;height:0px;' id='settingsdiv-arrow'><div style='width: 0; height: 0; border: 7px solid transparent;top:0px;border-top: 7px solid #fff;position:relative;;margin-left:100px;'></div></div></div><link rel='stylesheet' type='text/css' href='https://aqicn.org/air-cache/generic/scripts/dist/navmenu.css?_=20250118.191236' /><script async src='https://aqicn.org/air-cache/generic/scripts/dist/navmenu.js?_=20250121.194619' type='text/javascript'></script><script type="text/javascript"> fitLine(".link",.9); </script><script src='https://aqicn.org/air-cache/jquery-3.7.1.min.js?_=20250116.195014' type='text/javascript'></script><script type="text/javascript">function initTime(){if (isMobileUA) return;function setTimeText(){var minutes = new Date().getMinutes();var hours = new Date().getHours();var time = ( hours < 10 ? 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