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menu-btn" data-toggle="collapse" data-target=".nav-collapse" title="Open the menu" aria-label="Open the menu"><span class="icon-bar"></span><span class="icon-bar"></span><span class="icon-bar"></span> </button></div> </div> </div> </div> </div> </header> <div id="main-wrapper" class="container"> <div class="container" role="main"> <div class="row column-content-wrapper"> <div id="content" class="span12 article-container tc-gallery-style"> <article id="page-81" class="row-fluid post-81 page type-page status-publish czr-hentry"> <div class="entry-content"> <p><span style="font-size: 14pt; color: #008000;"><a href="https://urbanemissions.info/about-ueinfo/" target="_blank" rel="noopener"><strong>UrbanEmissions.Info</strong></a> stands for </span><span style="font-size: 14pt;">(a) <b>sharing</b> knowledge on air pollution (b) <strong>science</strong> based air quality analysis (c) <strong>advocacy and </strong><b>awareness raising</b> on air quality management and (d) <b>building partnerships</b> among local, national, and international air-heads.</span></p> <hr /> <h2><a href="https://urbanemissions.info/blog-pieces/beginners-handbook-on-assembling-air-pollution-models/"><img decoding="async" class=" wp-image-5 alignright" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/images/SIM-52-2024_Page_01.jpg" alt="Energy, Emissions and Air Pollution Analysis Resource Links" width="170" height="190" /></a><span style="color: #000000;"><strong>Beginners Handbook on Assembling Air Pollution Models</strong></span></h2> <p>Air pollution is an escalating issue in cities worldwide, with direct impacts on public health. While many numerical tools exist to address this problem, there is a growing need for practical, scalable, and accessible modeling training resources, particularly in low- and middle-income countries. This publication is specifically designed to support those training needs and empower city managers, regulators, practitioners, academics, and citizen groups. Whether you are a beginner or seeking to refresh your knowledge, this resource provides a fundamental understanding of the key themes associated with air pollution modeling. Click on the image or <a href="https://urbanemissions.info/blog-pieces/beginners-handbook-on-assembling-air-pollution-models/" target="_blank" rel="noopener">here to download</a> the full document. All the training material including primers, presentations, plug and play tools, benchmarking notes, instructional videos and more is available @ <a href="https://urbanemissions.info/tools" target="_blank" rel="noopener">https://urbanemissions.info/tools</a>.</p> <hr /> <h2><a href="https://urbanemissions.info/india-air-quality/india-ncap-cities/"><img decoding="async" class=" wp-image-5 alignright" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/ncap/NCAP131-state-citynames.png" alt="Energy, Emissions and Air Pollution Analysis Resource Links" width="180" height="180" /></a><span style="color: #000000;"><strong>India National Clean Air Programme (NCAP) – Data Repository</strong></span></h2> <p>NCAP was introduced in 2019 to address air pollution in India’s non-attainment cities. The current list of 131 cities are required to document (1) emission and pollution load via monitoring and modelling (2) activities necessary for all the known sources to achieve the pollution target (3) plans to build institutional capacity to manage the information flow and (4) ways to oversee the progress of various components. In support of the program, here are the data resources and synthesis reports.</p> <ol> <li>List of the non-attainment cities and designated airsheds (<a href="https://urbanemissions.info/india-ncap-city-airsheds/" target="_blank" rel="noopener">here</a>)</li> <li>A review of the approved action plans (<a href="https://urbanemissions.info/india-ncap-review/" target="_blank" rel="noopener">here</a>)</li> <li>Download ambient monitoring needs information by airshed (<a href="https://urbanemissions.info/india-ncap-airsheds-monitoring-needs/" target="_blank" rel="noopener">here</a>)</li> <li>Download GIS information by airshed (<a href="https://urbanemissions.info/india-ncap-airshed-osmroads/" target="_blank" rel="noopener">road lines & road density</a>) (<a href="https://urbanemissions.info/india-ncap-urban-builtup-area/" target="_blank" rel="noopener">urban built-up area</a>)</li> <li>Download average TROPOMI extracts for the designated airsheds for 2019-2023 – <a href="https://urbanemissions.info/india-air-quality/india-ncap-satellite-tropomi-no2-extracts/" target="_blank" rel="noopener">NO2</a>, <a href="https://urbanemissions.info/india-air-quality/india-ncap-satellite-tropomi-so2-extracts/" target="_blank" rel="noopener">SO2</a>, <a href="https://urbanemissions.info/india-air-quality/india-ncap-satellite-tropomi-o3-extracts/" target="_blank" rel="noopener">O3</a>, <a href="https://urbanemissions.info/india-air-quality/india-ncap-satellite-tropomi-hcho-extracts/" target="_blank" rel="noopener">HCHO</a></li> <li>Download monthly average meteorological data from reanalysis fields for 1980-2023 – <a href="https://urbanemissions.info/india-air-quality/india-ncap-meteorology-reanalysis-2m-temperature/" target="_blank" rel="noopener">2m-temp</a>, <a href="https://urbanemissions.info/india-air-quality/india-ncap-meteorology-reanalysis-rainfall/" target="_blank" rel="noopener">rainfall</a></li> <li>Download city-wise official daily AQI data 2015-2023 (<a href="https://urbanemissions.info/india-air-quality/india-ncap-aqi-indian-cities-2015-2023/" target="_blank" rel="noopener">here</a>)</li> <li>Download airshed-wise gridded reanalyzed PM2.5 concentrations data 1998-2022 (<a href="https://urbanemissions.info/india-air-quality/india-ncap-reanalyzed-pm25-wustl-by-airshed/" target="_blank" rel="noopener">here</a>)</li> <li>Air quality modeling tools – examples and reference notes (<a href="https://urbanemissions.info/tools/" target="_blank" rel="noopener">here</a>)</li> <li><a href="https://urbanemissions.info/india-air-quality/india-ncap-cities/" target="_blank" rel="noopener">Explore more here</a></li> </ol> <hr /> <h2><span style="color: #000000;"><strong>What is Polluting Delhi’s Air?</strong></span></h2> <p>Air pollution in (urban and rural) India is a growing public concern, and city of Delhi (its capital) is one of the most studied city with a disproportionate share of media attention. Yet, we do not seem to have decisive answers to simple questions like how polluted is the city, what are the main sources, and where to start to control pollution in the city. A <a href="https://urbanemissions.info/whats-polluting-delhis-air/" target="_blank" rel="noopener">review of Delhi’s air quality</a> from 1990 to 2022 from data, sectoral, judicial, and institutional perspectives was published as a journal article in 2023 and the associated data and references is available [<a href="https://urbanemissions.info/whats-polluting-delhis-air/" target="_blank" rel="noopener">here</a>].</p> <table style="height: 100px;" width="400px"> <tbody> <tr> <td><a href="https://urbanemissions.info/wp-content/uploads/images/2023-10-Delhi-AQ-Review_01.jpg" class="grouped_elements" rel="tc-fancybox-group81"><img fetchpriority="high" decoding="async" class="size-medium wp-image-5 aligncenter" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/images/2023-10-Delhi-AQ-Review_thumb_01.jpg" alt="Delhi Air Quality Forecasts" width="600" height="300" /></a></td> <td><a href="https://urbanemissions.info/wp-content/uploads/images/2023-10-Delhi-AQ-Review_05.jpg" class="grouped_elements" rel="tc-fancybox-group81"><img loading="lazy" decoding="async" class="size-medium wp-image-5 aligncenter" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/images/2023-10-Delhi-AQ-Review_thumb_05.jpg" alt="Delhi Air Quality Forecasts" width="600" height="300" /></a></td> </tr> </tbody> </table> <h2><a href="https://urbanemissions.info/india-apna" target="_blank" rel="noopener"><img loading="lazy" decoding="async" class=" wp-image-5 alignright" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/apna/images/apna_airsheds.png" alt="Air Monitoring 101" width="150" height="150" /></a><span style="color: #000000;"><strong>Air Pollution Knowledge Assessments (APnA) city program</strong></span></h2> <p>Launched in August 2017, the <a href="https://urbanemissions.info/india-apna" target="_blank" rel="noopener">APnA city program</a> is designed to provide a starting point for understanding air pollution in urban agglomerations to support public dialogue and policy discussions. <a href="https://urbanemissions.info/india-apna/apna-methodology/" target="_blank" rel="noopener">Architecture</a> behind the APnA city program is carved and <a href="https://urbanemissions.info/resources-energy-emissions-analysis-in-india">updated</a> from our operational <a href="https://www.indiaairquality.info" target="_blank" rel="noopener">all India air quality forecasting</a> platform.</p> <p>We currently have stories for 60 Indian cities – Agra, Amritsar, Bengaluru, Bhopal, Bhubaneswar, Chandigarh-Ambala-Patiala, Chennai, Coimbatore, Dehra Dun, Indore, Jaipur, Kanpur, Kochi, Ludhiana, Nagpur, Patna, Pune, Raipur-Durg-Bhilai, Ranchi, Varanasi, Agartala, Ahmedabad, Allahabad, Asansol-Durgapur, Aurangabad, Dharwad-Hubli, Dhanbad-Bokaro, Gaya, Guwahati-Dispur, Gwalior, Hyderabad, Jamshedpur, Jodhpur, Kolkata-Howrah, Kota, Lucknow, Madurai, Mumbai, Nashik, Panjim-Vasco-Margao, Puducherry, Rajkot, Shimla, Srinagar, Surat, Thiruvananthapuram, Tiruchirapalli, Vadodara, Vijayawada-Guntur, and Visakhapatnam.</p> <hr /> <h2><a href="https://urbanemissions.info/wp-content/uploads/images/India-Airsheds-Graphical-Abstract.jpg" class="grouped_elements" rel="tc-fancybox-group81"><img loading="lazy" decoding="async" class=" wp-image-5 alignright" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/images/India-Airsheds-Graphical-Abstract.jpg" alt="India Regional Airsheds" width="300" height="200" /></a><span style="color: #000000;"><strong>Designating Airsheds for Urban and Regional Air Quality Management in India</strong></span></h2> <p>Journal Article in Air (2024) [<a href="https://www.mdpi.com/2813-4168/2/3/15" target="_blank" rel="noopener">publication link</a>]</p> <p>Air pollution knows no boundaries, which means for a city or a region to attain clean air standards, must not only look at the emission sources within its own administrative boundary, but also at sources in the immediate vicinity and those originating from long-range transport. And there is a limit to how much area can be explored to evaluate, govern, and manage as designated airsheds for cities and larger regions. This paper discusses the need from an official airshed framework for India’s air quality management, urban airsheds designated for India’s 131 non-attainment cities under the national clean air programme, and proposes climatically and geographically appropriate regional airsheds to support long-term planning. Between 28 states, eight union territories, 36 meteorological sub-regional divisions, and six regional meteorological departments, establishing the proposed 15 regional airsheds for integrated and collaborative air quality management across India is a unique opportunity. [<a href="https://zenodo.org/records/11332107" target="_blank" rel="noopener">Download supporting information @ zenodo</a>]</p> <hr /> <h2><a href="https://urbanemissions.info/tools"><img loading="lazy" decoding="async" class=" wp-image-5 alignright" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/ncap/icons/ncapinfo-aqm-tools.png" alt="Air Quality Modeling Tools" width="150" height="150" /></a><span style="color: #000000;"><strong>Air Quality Modeling Tools</strong></span></h2> <p>There is a need to develop air quality modeling tools that feed into a robust decision support framework taking into account both institutional and technical challenges in data-scarce low and middle income countries. The <a href="https://urbanemissions.info/tools" target="_blank" rel="noopener">SIM-air family of tools</a> “<strong>Simple Interactive Models for better air quality</strong>” are developed with one objective – make use of the best available information with the academic, government, and non-governmental bodies, to support integrated air quality management. These tools are designed to collate the necessary information, to estimate key parameters (e.g. emissions from various sources) and to simulate the interactions between emissions, pollution dispersion, impacts, and management options in an environmental and economic context [<a href="https://urbanemissions.info/tools" target="_blank" rel="noopener">link</a>].</p> <hr /> <h2><span style="color: #000000;"><strong>Primers for Air Quality Managers</strong></span></h2> <table style="height: 100px;" width="400px"> <tbody> <tr> <td><a href="https://urbanemissions.info/publications/primer-on-abc-of-air-quality/" target="_blank" rel="noopener"><img loading="lazy" decoding="async" class="size-medium wp-image-5 aligncenter" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/images/Primer-AtoZ-AQ-Terminology-thumb_01.jpg" alt="Air Quality Primers" width="200" height="300" /></a></td> <td><a href="https://urbanemissions.info/publications/primer-on-air-pollution-monitoring/" target="_blank" rel="noopener"><img loading="lazy" decoding="async" class="size-medium wp-image-5 aligncenter" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/images/Primer-Air-Monitoring-101_thumbnail_01.jpg" alt="Air Quality Primers" width="200" height="200" /></a></td> <td><a href="https://urbanemissions.info/primer-on-pollution-source-apportionment/" target="_blank" rel="noopener"><img loading="lazy" decoding="async" class="size-medium wp-image-5 aligncenter" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/images/Primer-PMSA-English-thumb_01.jpg" alt="Air Quality Primers" width="200" height="200" /></a></td> <td><a href="https://urbanemissions.info/publications/primer-on-know-your-air-pollutants/" target="_blank" rel="noopener"><img loading="lazy" decoding="async" class="size-medium wp-image-5 aligncenter" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/images/Primer-Know-Your-Pollutants_thumbnail_01.jpg" alt="Air Quality Primers" width="200" height="200" /></a></td> </tr> <tr> <td><a href="https://urbanemissions.info/publications/primer-on-air-quality-management/" target="_blank" rel="noopener"><img loading="lazy" decoding="async" class="size-medium wp-image-5 aligncenter" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/images/Primer_on_Air_Quality_Management_Page_01.jpg" alt="Air Quality Primers" width="200" height="300" /></a></td> <td><a href="https://urbanemissions.info/tools/aqi-calculator/" target="_blank" rel="noopener"><img loading="lazy" decoding="async" class="size-medium wp-image-5 aligncenter" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/images/SIM-46-2021_Page_01.jpg" alt="Air Quality Primers" width="200" height="300" /></a></td> <td><a href="https://urbanemissions.info/blog-pieces/3-kinds-of-people-for-aqm/" target="_blank" rel="noopener"><img loading="lazy" decoding="async" class="size-medium wp-image-5 aligncenter" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/images/SIM-42-2021_Page_01.jpg" alt="Air Quality Primers" width="200" height="300" /></a></td> <td><a href="https://urbanemissions.info/wp-content/uploads/docs/SIM-44-2021.pdf" target="_blank" rel="noopener"><img loading="lazy" decoding="async" class="size-medium wp-image-5 aligncenter" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/images/SIM-44-2021_Page_01.jpg" alt="Air Quality Primers" width="200" height="300" /></a></td> </tr> </tbody> </table> <h2><span style="color: #000000;"><strong>Summary of Air Quality in India between 1998-2020 </strong></span></h2> <p>Reanalyzed PM2.5 concentrations and modelled source contributions were analyzed to present (a) India’s % area exposed to various pollution bins in 1998-2020 (b) India’s % population exposed to various pollution bins in 1998-2020 (c) All India pollution maps for 1998-2020 (d) State and Union Territory maps for 1998-2020 (e) State pollution rank among the 36 States and Union Territories for 1998-2020 and (f) Average % source contributions at State level for 2017. All the maps, extracted data files, infographs, and animations are <a href="https://urbanemissions.info/india-satpm25/" target="_blank" rel="noopener">available here</a>.</p> <p><a href=" https://urbanemissions.info/wp-content/uploads/images/India-WUSTL-PM25-Graphical-Abstract.png"><img loading="lazy" decoding="async" class="alignnone wp-image-3198" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/2023/01/India-WUSTL-PM25-Graphical-Abstract-300x113.png" alt="" width="677" height="255" data-srcset="https://urbanemissions.info/wp-content/uploads/2023/01/India-WUSTL-PM25-Graphical-Abstract-300x113.png 300w, https://urbanemissions.info/wp-content/uploads/2023/01/India-WUSTL-PM25-Graphical-Abstract-1024x387.png 1024w, https://urbanemissions.info/wp-content/uploads/2023/01/India-WUSTL-PM25-Graphical-Abstract-768x290.png 768w, https://urbanemissions.info/wp-content/uploads/2023/01/India-WUSTL-PM25-Graphical-Abstract-1536x580.png 1536w, https://urbanemissions.info/wp-content/uploads/2023/01/India-WUSTL-PM25-Graphical-Abstract-2048x773.png 2048w" data-sizes="auto, (max-width: 677px) 100vw, 677px" /></a></p> <p>Open access journal article “Evolution of India’s PM2.5 Pollution Between 1998 and 2020 Using Global Reanalysis Fields Coupled with Satellite Observations and Fuel Consumption Patterns” and supplementary information is <a href="https://pubs.rsc.org/en/content/articlelanding/2022/EA/D2EA00027J" target="_blank" rel="noopener">published here</a>.</p> <hr /> <h2><span style="color: #000000;"><strong>Air Quality Forecasts for India – State-level Summaries</strong></span></h2> <p>Our forecasting system also includes a high-resolution medium-range meteorological system for the next 72-hours, processed through 3D-WRF meteorological model and the GFS meteorological fields, followed by chemical transport modeling using the CAMx modeling system and a detailed emissions inventory for anthropogenic and natural sources. The modeling domain covers the Indian subcontinent at a temporal resolution of 1 hour. Air quality information is available as tables, time series, and maps at national and state level. A glimpse of state-level summary of PM2.5 concentrations, source contributions, and meteorological data is below for the state of Uttar Pradesh. For other states and more, <a href="https://urbanemissions.info/india-air-quality-forecasts/" target="_blank" rel="noopener">click here</a> [<a href="https://urbanemissions.info/india-air-quality-forecasts/" target="_blank" rel="noopener">main link</a>].</p> <table style="height: 100px;" width="400px"> <tbody> <tr> <td><a href="https://urbanemissions.info/wp-content/uploads/forecasts/india/fcst_metpm_MH_02.png" class="grouped_elements" rel="tc-fancybox-group81"><img loading="lazy" decoding="async" class="size-medium wp-image-5 aligncenter" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/forecasts/india/fcst_metpm_MH_02.png" alt="India Air Quality Forecasts" width="400" height="170" /></a></td> <td><a href="https://urbanemissions.info/wp-content/uploads/forecasts/india/fcst_metpm_UP_02.png" class="grouped_elements" rel="tc-fancybox-group81"><img loading="lazy" decoding="async" class="size-medium wp-image-5 aligncenter" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/forecasts/india/fcst_metpm_UP_02.png" alt="India Air Quality Forecasts" width="400" height="170" /></a></td> </tr> </tbody> </table> <h2><a href="https://urbanemissions.info/wp-content/uploads/docs/SIM-40-2021.pdf" target="_blank" rel="noopener"><img loading="lazy" decoding="async" class="size-medium wp-image-5 alignright" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/images/SIM-40-2021_Page_01.jpg" alt="India NCAP Review" width="150" height="200" /></a><span style="color: #000000;"><strong>Monitoring ambient air quality in Indian city airsheds under NCAP</strong></span></h2> <p>Irrespective of the monitoring approaches and equipment, the initiation process requires an understanding of the pollution loads, mix of sources, and geography of the city to decide how much to monitor for better spatial representation and how many times to monitor for better<br /> temporal representation. <a href="https://urbanemissions.info/india-ncap-review/#sim-40-2021" target="_blank" rel="noopener">In this report</a>, we defined (a) the size of NCAP city airsheds (b) the recommended number of ambient air quality monitoring sites in an airshed (c) the operational sampling frequency to support receptor-based source apportionment studies. These resources are necessary for strengthening the monitoring needs of an airshed to track pollution levels, to conduct receptor-model-based source apportionment studies, and to support long-term air quality management plans.<strong><br /> </strong></p> <hr /> <h2><a href="https://urbanemissions.info/resources-energy-emissions-analysis-in-india/" target="_blank" rel="noopener"><img loading="lazy" decoding="async" class=" wp-image-5 alignright" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/images/SIM-41-2021_Page_01.jpg" alt="Energy, Emissions and Air Pollution Analysis Resource Links" width="125" height="150" /></a><span style="color: #000000;"><strong>Resource Links for Energy, Emissions and Air Pollution Analysis in India</strong></span></h2> <p>Here we present a <a href="https://urbanemissions.info/resources-energy-emissions-analysis-in-india/">repository</a> of resource links ranging from official portals; guidelines, acts, and rules documents; compiled statistics, maps, and other geospatial databases; satellite observations and tools; ambient air quality monitoring data from official and unofficial networks; global and regional emission inventories; global reanalysis fields; and global meteorological data fields and visualization portals, necessary for putting together energy, emissions, and air pollution analysis in India.</p> <p>All the database links are also available as a PDF under the <a href="https://urbanemissions.info/publications/working-papers/" target="_blank" rel="noopener">working paper series</a>.</p> <hr /> <h2><a href="https://urbanemissions.info/blog-pieces/airquality-smog-towers-crazy/" target="_blank" rel="noopener"><img loading="lazy" decoding="async" class=" wp-image-5 alignright" src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="https://urbanemissions.info/wp-content/uploads/images/2018-09-Vacuum-Cleaning-green.jpg" alt="Energy, Emissions and Air Pollution Analysis Resource Links" width="150" height="150" /></a><span style="color: #000000;"><strong>Can We Vacuum Our Air Pollution Problem Using Smog Towers?</strong></span></h2> <p>Atmospheric science defines the air pollution problem as (a) a dynamic situation where the air is moving at various speeds with no boundaries and (b) a complex mixture of chemical compounds constantly forming and transforming into other compounds. With no boundaries, it is unscientific to assume that one can trap air, clean it, and release into the same atmosphere simultaneously. <a href="https://urbanemissions.info/blog-pieces/airquality-smog-towers-crazy/">Access</a> the paper which describes why the idea of vacuuming outdoor air pollution is unrealistic and some commentary notes.</p> <hr /> <h2><a href=" https://indiaairquality.info/wp-content/uploads/anime/firemap_india_04.png"><img loading="lazy" decoding="async" class=" wp-image-5 alignright" src=" https://indiaairquality.info/wp-content/uploads/anime/firemap_india_04.png" alt="Air Quality Management" width="180" height="250" /></a><span style="color: #000000;"><strong>Air Emissions from Open Fires </strong></span></h2> <p>Open fires associated with agricultural residue clearing (after the seasonal harvests and a typical process to prepare for the next crop) and forest fires (associated with hot and dry conditions and some times intentional) is an important source of particulate and trace gas emissions. Detection of these fires is a complex methodology, made easy with the availability of a series of open satellite feeds. We utilize the <a href="https://worldview.earthdata.nasa.gov/">NASA Worldview</a> platform to visualize and access this information. Image to the right presents all open fires detected over the Indian Subcontinent in the last 24 hours (updated with VIIRS feed every 3 hours). A multi-pollutant emissions inventory, estimated using the location information and land-use databases (agricultural, forest, urban, water, arid, etc.) is available from <a href=" https://bai.acom.ucar.edu/Data/fire/">UCAR-FINN</a> program. For more details and to access archives, click <a href="https://urbanemissions.info/emissions-in-india-open-agricultural-forest-fires/">here</a>.</p> </div> </article> <hr class="featurette-divider tc-mobile-separator"> </div> </div> </div> </div>  <footer id="footer" class=""> <div class="container footer-widgets "> <div class="row widget-area" role="complementary"> <div id="footer_one" class="span4"> <aside id="custom_html-4" class="widget_text widget widget_custom_html"><h3 class="widget-title">Latest Research</h3><div class="textwidget custom-html-widget"><p><a href="https://urbanemissions.info/delhi-air-quality-forecasts/">Delhi Air Quality</a></p> <p><a href="https://urbanemissions.info/india-air-quality-forecasts/">India Air Quality</a></p> <p><a href="https://urbanemissions.info/india-apna/">APnA City Program</a></p> <p><a href="https://urbanemissions.info/india-ncap-review/">NCAP India</a></p> <p><a href="https://urbanemissions.info/about-ueinfo/">About UE.info</a></p></div></aside> </div> <div id="footer_two" class="span4"> <aside id="custom_html-3" class="widget_text widget widget_custom_html"><h3 class="widget-title">Publications</h3><div class="textwidget custom-html-widget"><p><a href="https://urbanemissions.info/publications/#journalarticles/">Journal Articles</a></p> <p><a href="https://urbanemissions.info/publications/#reports/">Reports</a></p> <p><a href="https://urbanemissions.info/working-papers/">Working Papers</a></p> <p><a href="https://urbanemissions.info/publications/#referencenotes/">Reference Notes</a></p> <p><a href="https://urbanemissions.info/infographs/">Inforgraphs</a></p></div></aside> </div> <div id="footer_three" class="span4"> <aside id="search-3" class="widget widget_search"><form role="search" method="get" id="searchform" class="searchform" action="https://urbanemissions.info/"> <div> <label class="screen-reader-text" for="s">Search for:</label> <input type="text" value="" name="s" id="s" /> <input type="submit" id="searchsubmit" value="Search" /> </div> </form></aside><aside id="media_image-2" class="widget widget_media_image"><img width="150" height="57" src="https://urbanemissions.info/wp-content/uploads/2017/03/logo.grid_.3-300x114.png" class="image wp-image-443 attachment-150x57 size-150x57" alt="" style="max-width: 100%; height: auto;" decoding="async" loading="lazy" srcset="https://urbanemissions.info/wp-content/uploads/2017/03/logo.grid_.3-300x114.png 300w, https://urbanemissions.info/wp-content/uploads/2017/03/logo.grid_.3-768x292.png 768w, https://urbanemissions.info/wp-content/uploads/2017/03/logo.grid_.3-1024x389.png 1024w, https://urbanemissions.info/wp-content/uploads/2017/03/logo.grid_.3.png 1628w" sizes="auto, (max-width: 150px) 100vw, 150px" /></aside> </div> </div> </div> <div class="colophon"> <div class="container"> <div class="row-fluid"> <div class="span3 social-block pull-left"><span class="social-links"><a rel="nofollow noopener noreferrer" class="social-icon icon-feed" title="Subscribe to my rss feed" aria-label="Subscribe to my rss feed" href="https://urbanemissions.info/feed/rss/" target="_blank" ><i class="fas fa-rss"></i></a></span></div><div class="span6 credits"><p>· <span class="tc-copyright-text">© 2025</span> <a href="https://urbanemissions.info" title="UrbanEmissions.Info" rel="bookmark">UrbanEmissions.Info</a> · <span class="tc-wp-powered-text">Powered by</span> <a class="icon-wordpress" target="_blank" rel="noopener noreferrer" href="https://wordpress.org" title="Powered by WordPress"></a> · <span class="tc-credits-text">Designed with the <a class="czr-designer-link" href="https://presscustomizr.com/customizr" title="Customizr theme">Customizr theme</a> </span> ·</p></div> </div> </div> </div> </footer> </div> <script type="text/javascript" src="https://urbanemissions.info/wp-includes/js/comment-reply.min.js?ver=6.7.2" id="comment-reply-js" async="async" data-wp-strategy="async"></script> <script type="text/javascript" src="https://urbanemissions.info/wp-includes/js/jquery/ui/core.min.js?ver=1.13.3" id="jquery-ui-core-js"></script> <div id="tc-footer-btt-wrapper" class="tc-btt-wrapper right"><i class="btt-arrow"></i></div> </body> </html>