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printed here }); </script> <div id="article" class="standard"> <div class="w70"> <h1 class="mainH1">Dagsl盲ngdens f枚r盲ndring under 氓ret</h1> <div class="lead w70"> <p>I Norden 盲r skillnaderna i dagsl盲ngd under 氓rets g氓ng mycket stora. Under v氓ren och h枚sten g氓r f枚r盲ndringen i dagsl盲ngden snabbt, det m盲rks s盲rskilt l盲ngst i norr d盲r dagarna g氓r fr氓n att p氓 vintern vara helt m枚rka till att p氓 sommaren vara ljusa dygnet runt.</p> </div> </div> <div class="articleLeft w50"> <div id="articleBody"> <div class="paragraphs w50"> <p>I figuren nedan visas 枚versiktligt hur m氓nga minuter dagens l盲ngd f枚r盲ndras fr氓n en dag till n盲sta under 氓rets lopp. <br/><br/>Den gr枚na linjen g盲ller ungef盲r f枚r sydligaste G枚taland, den bruna f枚r Svealand, den m枚rkt bl氓 i h枚jd med V盲sterbotten och den ljust bl氓 f枚r de allra nordligaste delarna av landet. <br/></p><div class="blockAlign center blockSize width430"> <span id="block-1-65904-1040979349" class="figure "> <img src="/web/20150109052901im_/http://www.smhi.se/polopoly_fs/1.7187.1398236301!/image/change_daylength_420.png_gen/derivatives/Original_430px/change_daylength_420.png" alt="Diagram; dagsl盲ngdens f枚r盲ndring 枚ver 氓ret" class="orgWidth430"/> <span class="figureCaption"> F枚r盲ndringar i dagsl盲ngd fr氓n en dag till n盲sta under ett 氓r. Gr枚n linje motsvarar sydligaste G枚taland, den bruna Svealand, den m枚rkt bl氓 i h枚jd med V盲sterbotten och den ljust bl氓 f枚r de allra nordligaste delarna av landet. </span> </span> <div class="clearboth"></div> </div><h2 class="mainH2">St枚rst f枚r盲ndringar i norr</h2><p>L盲ngst i norr blir f枚r盲ndringarna i dagsl盲ngden allra mest dramatiska. Under ett 氓r g氓r man fr氓n den ena ytterligheten till den andra, det vill s盲ga fr氓n polarnatt till midnattssol.<br/><br/>Kring <span id="block-1-65905-615637245" class="link inline"><a href="/web/20150109052901/http://www.smhi.se/kunskapsbanken/meteorologi/sommarsolstand-och-vintersolstand-1.4180">solst氓nden</a></span> 盲r dagens l盲ngd d盲r antingen 0 eller 24 timmar och d氓 blir det ingen f枚r盲ndring fr氓n ett dygn till n盲sta. D盲rmed hamnar den ljusbl氓 kurvan p氓 nollinjen. Som mest under v氓r och h枚st 枚kar dagsl盲ngden med mer 盲n tio minuter per dag allra l盲ngst i norr.<br/><br/>I s枚der 盲r 枚kningen inte lika stor, men det r枚r sig 盲nd氓 om cirka fem minuter per dag som mest. Sett 枚ver en vecka blir det en 枚kning med 35 minuter.<br/><br/>Att kurvorna ser ut som de g枚r 盲r aningen komplicerat, men att 枚kningen av dagens l盲ngd skiljer mellan norr och s枚der beror ju p氓 att jordaxeln lutar.<br/><br/>Att den maximala 枚kningen av dagl盲ngden inte 盲r som st枚rst vid <span id="block-1-65906-967020602" class="link inline"><a href="/web/20150109052901/http://www.smhi.se/kunskapsbanken/meteorologi/hostdagjamning-och-vardagjamning-1.4185">dagj盲mningarna</a></span> kan vara f枚rv氓nande, men beror ut枚ver jordaxelns lutning p氓 att jordens hastighet i sin bana runt solen varierar. </p> </div> <div class="articleFooter"> <div class="share"> <div class="addthis_toolbox addthis_default_style addthis_16x16_style"> <a class="addthis_button_facebook"></a> <a class="addthis_button_twitter"></a> <a class="addthis_button_google_plusone_share"></a> <a class="addthis_button_linkedin"></a> <a class="addthis_button_email"></a> <a class="addthis_button_compact"></a><a class="addthis_counter 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