{"query_echo":{"q":"","filters":{"analysis_type":["air quality modeling"]},"warnings":[{"code":"facet_value_not_in_vocabulary","message":"Value 'air quality modeling' for facet 'analysis_type' is not in the controlled vocabulary."}]},"total":{"value":6,"relation":"eq"},"page":1,"page_size":20,"self":"https://climateinsightsdirectory.org/api/v1/search?analysis_type=air+quality+modeling","stability":"beta","ai_marking":{"digital_source_type":{"uri":"http://cv.iptc.org/newscodes/digitalsourcetype/trainedAlgorithmicMedia","name":"Created using Generative AI"},"notice":"Summary and key insights are generated using artificial intelligence."},"results":[{"id":"gem-000169","url":"https://climateinsightsdirectory.org/document/gem-000169","title":"KÖMÜR YAKITLI AFŞİN ELBİSTAN A TERMİK SANTRALİ GENİŞLETME PROJESİNİN HALK SAĞLIĞI ETKİLERİ VE EKONOMİK MALİYETİ","publisher":{"name":"Global Energy Monitor","organization":"global-energy-monitor"},"document_type":"report","language":"tr","date_published":"2024-09","source_url":"https://globalenergymonitor.org/sites/default/files/migration/reports/0906AfsinElbistanA_EkonomikMaliyetRaporu_THHP_0809.2024-2-1-1_1.pdf","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"The report calculates that the planned expansion of the Afşin Elbistan A Thermal Power Plant will cause significant public health damage and economic losses. In the first year of operation (2028), the project is estimated to cause 42 deaths and cost the economy 58.1 million USD. Over a 35-year operational period (2028-2063), the cumulative impact is projected to be 2,268 deaths and an economic cost of 2.6 billion USD, which the authors equate to the cost of building 29 hospitals with 500 beds each.","ai_generated":true,"unit":"gem-000169#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"In the first operational year, estimated to be 2028, the 688 MW capacity increase is projected to cause 42 deaths, 43 emergency room visits for asthma, 87 children with asthma, 27 preterm births, 15 low birth weight births, and 16,917 lost workdays.","ai_generated":true,"unit":"gem-000169#insight-1","date_modified":"2026-10-23"},{"text":"The estimated economic cost of air pollution from the additional capacity in the first year of operation is 58.1 million USD.","ai_generated":true,"unit":"gem-000169#insight-2","date_modified":"2026-10-23"},{"text":"Over a 35-year operational period from 2028 to 2063, the cumulative health impacts are estimated at 2,268 deaths, 1,714 emergency room visits for asthma, 626 new pediatric asthma cases, 2,896 asthma attacks in children, 907 preterm births, 514 low birth weight births, and 755,904 sick leave days.","ai_generated":true,"unit":"gem-000169#insight-3","date_modified":"2026-10-23"},{"text":"The total cumulative economic cost to the economy from 2028 to 2063 is estimated at 2.6 billion USD.","ai_generated":true,"unit":"gem-000169#insight-4","date_modified":"2026-10-23"},{"text":"The 2.6 billion USD economic burden is equivalent to the construction cost of 29 hospitals with 500 beds each, totaling 14,500 hospital beds.","ai_generated":true,"unit":"gem-000169#insight-5","date_modified":"2026-10-23"},{"text":"The study utilized the CALPUFF air dispersion model to simulate the concentrations of fine particulate matter (PM2.5), sulfur dioxide (SO2), and nitrogen oxides (NOx) resulting from the expansion.","ai_generated":true,"unit":"gem-000169#insight-6","date_modified":"2026-10-23"}],"climate_tags":["coal-fired power station","air pollution","public health","particulates","environmental impact assessment"],"geography_discussed":["World"],"frame_perspective":[],"analysis_type":["health impact assessment","economic cost analysis","air quality modeling"]},{"id":"ucs-000824","url":"https://climateinsightsdirectory.org/document/ucs-000824","title":"Low- and Zero-Emissions Zones","publisher":{"name":"Union of Concerned Scientists","organization":"union-of-concerned-scientists"},"document_type":"guide","language":"en","date_published":"2021-06","source_url":"https://www.ucs.org/sites/default/files/2021-07/low-and-zero-emissions-zones.pdf","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"The document explores low- and zero-emissions zones (LEZs and ZEZs) as tools for cities to reduce air pollution and greenhouse gas emissions. It compares international examples from Europe and Singapore with a voluntary pilot in Santa Monica, California. A significant portion of the guide is dedicated to ensuring equity, arguing that ZEZs in California must be designed to avoid regressive financial burdens on low-income residents and people of color, who are disproportionately exposed to vehicle-related PM2.5 pollution. The authors recommend that California provide enabling legislation for cities to implement these zones and suggest targeting high-pollution sectors, such as heavy-duty freight, to maximize public health benefits in disadvantaged communities.","ai_generated":true,"unit":"ucs-000824#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"Low-emissions zones (LEZs) and zero-emissions zones (ZEZs) differ from congestion zones in their primary goals; while congestion zones focus on reducing vehicle travel and traffic, LEZs and ZEZs are designed to reduce emissions to combat air pollution and meet global warming goals.","ai_generated":true,"unit":"ucs-000824#insight-1","date_modified":"2026-10-23"},{"text":"International case studies show varying enforcement and outcomes: London uses an automated camera system (Automatic Number Plate Recognition) to manage three additive zones, resulting in a 44% reduction in roadside NO2 in the central ULEZ since February 2017. Paris utilizes visual police inspections of 'Crit’Air' stickers, with projections suggesting passenger car NOx emissions in 2024 will be 76% to 87% below 2016 levels due to its LEZ.","ai_generated":true,"unit":"ucs-000824#insight-2","date_modified":"2026-10-23"},{"text":"In California, air pollution exposure is racially and economically inequitable; Black Californians are exposed to PM2.5 pollution that is 43% higher on average than White Californians, and Latino community members are exposed to 39% higher levels. The lowest-income households live where PM2.5 pollution is 10% higher than the state average.","ai_generated":true,"unit":"ucs-000824#insight-3","date_modified":"2026-10-23"},{"text":"To ensure equity in California ZEZs, policymakers must address five key concerns: the lack of accessible education materials, the regressive nature of fees and fines for low-income residents, the need to prioritize the highest pollution sources (medium- and heavy-duty vehicles), the risk of over-policing and surveillance in marginalized communities, and the need for revenue to be reinvested into equitable mobility projects.","ai_generated":true,"unit":"ucs-000824#insight-4","date_modified":"2026-10-23"},{"text":"Stakeholder interviews in California revealed significant concerns regarding the 'displacement' of pollution, where non-compliant vehicles might take alternate routes and increase pollution in peripheral disadvantaged communities, as well as a deep-seated mistrust of local government funding oversight.","ai_generated":true,"unit":"ucs-000824#insight-5","date_modified":"2026-10-23"},{"text":"The authors recommend that California enact enabling legislation to allow cities to develop LEZs and suggest that these zones be paired with other strategies, such as incentives to scrap polluting vehicles and investments in public transit, to avoid harming car-dependent populations.","ai_generated":true,"unit":"ucs-000824#insight-6","date_modified":"2026-10-23"}],"climate_tags":["air quality","zero-emissions vehicle","battery electric vehicle","climate justice","public transport","urban planning","freight transport"],"geography_discussed":["Europe","Santa Monica","London","Paris","Santiago","Singapore","Fresno","San Diego","San Bernardino","Stockton"],"frame_perspective":[],"analysis_type":["policy analysis","case study","equity assessment","air quality modeling"]},{"id":"cer-000361","url":"https://climateinsightsdirectory.org/document/cer-000361","title":"Report on Thabametsi Mine and Power Plant Modeling","publisher":{"name":"Centre for Environmental Rights","organization":"centre-for-environmental-rights"},"document_type":"report","language":"en","date_published":"2018-03-23","source_url":"https://cer.org.za/wp-content/uploads/2019/08/Annexure-3-Thabametsi-Sahu-Report-3.23.18-Sahu-Signed.pdf?x21779","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"The report concludes that the combined operation of the proposed Thabametsi power plant with the existing Matimba and Medupi plants would cause SO2 concentrations to exceed South Africa's health-based National Ambient Air Quality Standards (NAAQS) at several receptor locations. While NOx and PM2.5 emissions from the plants alone might not exceed standards due to stack dilution, the report finds they will likely cause exceedances when added to existing baseline pollution from mobile sources and the Grootegeluk Mine. Additionally, the author argues that PM2.5 emissions from the proposed Thabametsi mine were significantly underestimated in previous reports by at least a factor of five, likely leading to significant impacts on locations to the south-west.","ai_generated":true,"unit":"cer-000361#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"Combined emissions of SO2 from the proposed Thabametsi power plant and the existing Matimba and Medupi plants are predicted to exceed South Africa's National Ambient Air Quality Standards (NAAQS) at some receptor locations, even without considering other emission sources.","ai_generated":true,"unit":"cer-000361#insight-1","date_modified":"2026-10-23"},{"text":"While NOx and PM2.5 emissions from the power plants alone may not exceed ambient standards due to dilution from tall stacks, they are expected to cause NAAQS exceedances when added to baseline levels already near maximum limits from mobile sources and the Grootegeluk Mine.","ai_generated":true,"unit":"cer-000361#insight-2","date_modified":"2026-10-23"},{"text":"The author concludes that PM2.5 and PM10 impacts from the proposed Thabametsi mining activities are likely to be significant for locations to the south-west.","ai_generated":true,"unit":"cer-000361#insight-3","date_modified":"2026-10-23"},{"text":"The report asserts that PM2.5 emissions for the Thabametsi mine were underestimated by at least five times in a September 2012 report by Airshed Planning Professionals (Pty) Ltd, citing a lack of spatial distribution data and overly optimistic mitigation assumptions.","ai_generated":true,"unit":"cer-000361#insight-4","date_modified":"2026-10-23"},{"text":"Baseline air quality data from 2009 to 2011 at the Marapong monitoring station showed that annual average PM10 (51 μg/m³) and PM2.5 (43 μg/m³) concentrations already exceeded current ambient standards of 40 μg/m³ and 20 μg/m³, respectively.","ai_generated":true,"unit":"cer-000361#insight-5","date_modified":"2026-10-23"},{"text":"The report notes a critical lack of accurate air pollution measurement in the area due to an insufficient number of air monitors and poor siting of existing ones.","ai_generated":true,"unit":"cer-000361#insight-6","date_modified":"2026-10-23"}],"climate_tags":["air quality","particulates","coal-fired power station"],"geography_discussed":["Marapong","United States"],"frame_perspective":[],"analysis_type":["impact assessment","air quality modeling"]},{"id":"catf-000749","url":"https://climateinsightsdirectory.org/document/catf-000749","title":"Gasping for Breath","publisher":{"name":"Clean Air Task Force","organization":"clean-air-task-force"},"document_type":"report","language":"en","date_published":"2016-08","source_url":"https://cdn.catf.us/wp-content/uploads/2018/10/21094452/CATF_Pub_GaspingForBreath.pdf","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"The report estimates that oil and gas emissions will cause over 750,000 summertime asthma attacks in children under 18 across the U.S. in 2025. It identifies volatile organic compounds (VOCs) and nitrogen oxides (NOx) as the primary precursors to this ozone smog, noting that pollution travels far downwind to affect all 48 contiguous states. The analysis highlights Texas, Oklahoma, Colorado, and Pennsylvania as states with the highest number of asthma attacks. To mitigate these effects, the report recommends implementing leak detection and repair (LDAR) programs, replacing high-emitting pneumatic equipment, and using vapor recovery units on storage tanks.","ai_generated":true,"unit":"catf-000749#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"In 2025, ozone smog resulting from oil and gas pollution is projected to cause more than 750,000 summertime asthma attacks in children under 18 across the United States.","ai_generated":true,"unit":"catf-000749#insight-1","date_modified":"2026-10-23"},{"text":"Beyond asthma attacks in children, the industry's contribution to ozone smog is projected to cause over 2,000 asthma-related emergency room visits and more than 600 respiratory-related hospital admissions nationally each summer.","ai_generated":true,"unit":"catf-000749#insight-2","date_modified":"2026-10-23"},{"text":"The health impacts of oil and gas emissions extend to lost productivity and education, with children projected to miss 500,000 school days and adults facing 1.5 million person-days of forced rest or reduced activity annually.","ai_generated":true,"unit":"catf-000749#insight-3","date_modified":"2026-10-23"},{"text":"While pollution sources are localized, the resulting ozone smog affects all 48 contiguous U.S. states because air pollution travels far downwind from production facilities.","ai_generated":true,"unit":"catf-000749#insight-4","date_modified":"2026-10-23"},{"text":"Texas, Oklahoma, Colorado, and Pennsylvania are identified as the states with the largest number of asthma attacks attributable to oil and gas pollution.","ai_generated":true,"unit":"catf-000749#insight-5","date_modified":"2026-10-23"},{"text":"Storage tanks are a primary source of smog-forming pollutants, estimated to emit two-thirds of the VOCs from the oil and gas industry.","ai_generated":true,"unit":"catf-000749#insight-6","date_modified":"2026-10-23"},{"text":"The report identifies several technical interventions to reduce VOC emissions, including rigorous leak detection and repair (LDAR) programs, the use of vapor recovery units for storage tanks, and replacing high-emitting pneumatic equipment.","ai_generated":true,"unit":"catf-000749#insight-7","date_modified":"2026-10-23"}],"climate_tags":["methane","petroleum industry","air quality","public health","greenhouse gas"],"geography_discussed":["Colorado","Pennsylvania","Ohio","Texas","Oklahoma","Utah","Wyoming"],"frame_perspective":[],"analysis_type":["quantitative health impact assessment","air quality modeling"]},{"id":"cer-000257","url":"https://climateinsightsdirectory.org/document/cer-000257","title":"6_norhveld-combined-plots-21nov2013-825c2b51b8e51608.pdf","publisher":{"name":"Centre for Environmental Rights","organization":"centre-for-environmental-rights"},"document_type":"report","language":"en","date_published":null,"source_url":"https://cer.org.za/wp-content/uploads/2014/03/6_NorHVeld-combined-plots-21Nov2013.pdf?x21779","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"The document provides a technical comparison of air pollutant concentrations (SO2, NO2, and PM10) under two scenarios: actual emissions (Scenario 1) and requested limits (Scenario 2/2a). It highlights significant increases in predicted concentrations and exceedances of South African standards under the requested limits scenario, particularly for SO2.","ai_generated":true,"unit":"cer-000257#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"Under Scenario 2/2a (Requested emissions/limits), predicted concentrations for SO2, NO2, and PM10 are significantly higher than under Scenario 1 (Actual Emissions). For SO2, the 1-hour concentration is predicted to rise from 224 µg/m3 to 589 µg/m3, and the 24-hour concentration from 108 µg/m3 to 284 µg/m3. For NO2, the 1-hour concentration increases from 119 µg/m3 to 201 µg/m3. For PM10, the 24-hour concentration increases from 9 µg/m3 to 23 µg/m3.","ai_generated":true,"unit":"cer-000257#insight-1","date_modified":"2026-10-23"},{"text":"The requested emissions scenario (Scenario 2) results in a high number of exceedances of South African standards for SO2. Specifically, there are 596 exceedances for the 1-hour concentration and 95 exceedances for the 24-hour concentration.","ai_generated":true,"unit":"cer-000257#insight-2","date_modified":"2026-10-23"},{"text":"NO2 concentrations under Scenario 2 are considered compliant, with the 1-hour concentration resulting in only 1-3 exceedances.","ai_generated":true,"unit":"cer-000257#insight-3","date_modified":"2026-10-23"}],"climate_tags":["air quality"],"geography_discussed":["South Africa"],"frame_perspective":[],"analysis_type":["air quality modeling","comparative analysis"]},{"id":"cer-000936","url":"https://climateinsightsdirectory.org/document/cer-000936","title":"Air Quality, Health, and Economic Impacts of a New Coal Mine and Power Plant in Lephalale","publisher":{"name":"Centre for Environmental Rights","organization":"centre-for-environmental-rights"},"document_type":"report","language":"en","date_published":null,"source_url":"https://cer.org.za/wp-content/uploads/2023/08/Expert-Report-of-Centre-for-Research-on-Energy-and-Clean-Air.pdf?x21779","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"The report finds that the proposed Lephalale Coal Mine (LCM) and its power plant will cause significant air quality violations and severe health and economic burdens. It argues that a previous environmental impact assessment (EIA) by GESI (2017) underestimated these impacts by neglecting mercury, existing pollution sources, and secondary PM2.5 formation. The analysis indicates that while mining alone causes 93 premature deaths, burning the coal on-site increases this to 3,120 deaths, and burning it at existing plants like Medupi or Matimba could lead to up to 41,984 premature deaths. Mercury emissions are projected to cause a loss of 3,700 IQ points and 554 lives, with significant deposition in protected ecosystems like the Waterberg Biosphere Reserve.","ai_generated":true,"unit":"cer-000936#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"The 2017 environmental impact assessment (EIA) by GESI underestimated the project's impacts due to nine major methodological flaws, including the omission of mercury, failure to account for existing pollution sources, and the use of an incorrect PM2.5 annual-mean guideline value (40 \u000b\u0003 instead of 20 \u000b\u0003).","ai_generated":true,"unit":"cer-000936#insight-1","date_modified":"2026-10-23"},{"text":"Coal mining activities at the LCM project alone are estimated to cause 93 premature deaths and various morbidity outcomes, such as 75 preterm and 76 underweight births, resulting in an economic cost of USD 75 million over 35 years.","ai_generated":true,"unit":"cer-000936#insight-2","date_modified":"2026-10-23"},{"text":"The health and economic burdens increase drastically depending on where the coal is burnt: on-site combustion at the LCM leads to approximately 3,000 premature deaths and USD 2.5 billion in costs, while burning the coal at Medupi or Matimba power stations could result in approximately 40,000 premature deaths and USD 30 billion in costs.","ai_generated":true,"unit":"cer-000936#insight-3","date_modified":"2026-10-23"},{"text":"Mercury emissions from the LCM project (mine and IPP) are projected to cause 554 deaths and a loss of 3,700 IQ points, with an associated economic cost of approximately USD 662 million.","ai_generated":true,"unit":"cer-000936#insight-4","date_modified":"2026-10-23"},{"text":"The project will lead to widespread violations of South African air quality standards; daily average PM2.5 exceedances will affect over 20 million residents, daily PM10 exceedances will affect over 500,000 inhabitants, and hourly SO2 exceedances will affect over 2 million residents.","ai_generated":true,"unit":"cer-000936#insight-5","date_modified":"2026-10-23"},{"text":"Local residents in Lephalale already face increased health risks from existing sources (Medupi, Matimba, and Grootgeluk mine), including a 3.1% increase in preterm birth risk and a 2.5% increase in premature mortality; the LCM project will further increase these risks, notably raising the risk of chronic bronchitis in adults by 17.4% and children by 11.9%.","ai_generated":true,"unit":"cer-000936#insight-6","date_modified":"2026-10-23"},{"text":"The LCM project is expected to emit about 840 kg of mercury annually, with 30% depositing into regional ecosystems. This includes sensitive areas such as the Waterberg Biosphere Reserve, Marakele National Park, Magaliesberg Biosphere Reserve, and Spruytskloof and Nungu Private Nature Reserves, with peak deposition rates reaching 1,000 mg/ha/year.","ai_generated":true,"unit":"cer-000936#insight-7","date_modified":"2026-10-23"}],"climate_tags":["coal-fired power station","air pollution","environmental impact of mercury","environmental impact assessment"],"geography_discussed":["Limpopo","Waterberg Biosphere Reserve","Marakele National Park","Magaliesberg Biosphere Reserve","Spruytskloof Private Nature Reserve","Nungu Private Nature Reserve","Johannesburg","Cape Town","North West"],"frame_perspective":[],"analysis_type":["health impact assessment","economic valuation","air quality modeling"]}]}