GeohealthPub Date : 2026-05-08eCollection Date: 2026-05-01DOI: 10.1029/2025GH001717
Murad S Ramadan, Fayez A Abdulla, Wael Al-Delaimy, Aurelio Tobías, Massimo Stafoggia, Heba Safi, Mazen Malkawi
{"title":"Short-Term Effect of Ambient Air Pollution on Daily Mortality in Three Jordanian Cities: A Time-Series Study.","authors":"Murad S Ramadan, Fayez A Abdulla, Wael Al-Delaimy, Aurelio Tobías, Massimo Stafoggia, Heba Safi, Mazen Malkawi","doi":"10.1029/2025GH001717","DOIUrl":"10.1029/2025GH001717","url":null,"abstract":"<p><p>This study involved a multi-city time-series analysis (2015-2019) of daily all-cause (non-accidental) mortality and particulate matter with an aerodynamic diameter less than 10 μm (PM<sub>10</sub>), nitrogen dioxide (NO<sub>2</sub>), and sulfur dioxide (SO<sub>2</sub>) in Jordan's three largest cities (Amman, Irbid, Zarqa). City-specific quasi-Poisson models estimated percentage increase of risk per 10-unit increase across single-day lags (0-6 days) and averaged windows as lag (0-1), lag (2-5), and lag (0-5). Multi-pollutant models adjusted the primary pollutant for co-pollutants at lag (0-1). PM<sub>10</sub> means were 68.9, 49.0, and 78.7 μg/m<sup>3</sup> in Amman, Irbid, and Zarqa, respectively. Amman's average concentration was close to the national annual limit of 70 μg/m<sup>3</sup> set by Jordanian air quality standards (JS 1140/2006), while Zarqa's mean level exceeded it. In Amman, PM<sub>10</sub> was positively associated with mortality (lag (0-1): 0.59% [0.22-0.96]; lag (0-5): 0.98% [0.40-1.57]); Irbid and Zarqa showed no consistent PM<sub>10</sub> associations, and NO<sub>2</sub>/SO<sub>2</sub> were generally null across cities. Adjustment for NO<sub>2</sub> and SO<sub>2</sub> did not attenuate Amman's PM<sub>10</sub> effect (0.60%-1.19%). Stratified analyses indicated short-lag PM<sub>10</sub> and mortality associations were significant among males and older adults in Amman, and cumulative PM<sub>10</sub> associations among females in Zarqa. This first national time-series study for Jordan identifies an acute mortality risk from particulate pollution in Amman and suggests inter-city heterogeneity, likely driven by differences in particle composition, sources, exposure, and standards exceedances. These findings support particulate-focused control measures and enhanced risk communication for vulnerable groups.</p>","PeriodicalId":48618,"journal":{"name":"Geohealth","volume":"10 ","pages":"e2025GH001717"},"PeriodicalIF":5.0,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13154377/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147870049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
GeohealthPub Date : 2026-05-06eCollection Date: 2026-05-01DOI: 10.1029/2025GH001501
B Corpuz, E Scott, B F Zaitchik, S Zeger, D Waugh, A Balasubramanian, J Madrigano, K Koehler, R Koehl, M McCormack
{"title":"Impact of Extreme Heat on Emergency Department Admissions for Childhood and Adult Asthma: An Evaluation of Earth Observations and Heat Wave Definitions.","authors":"B Corpuz, E Scott, B F Zaitchik, S Zeger, D Waugh, A Balasubramanian, J Madrigano, K Koehler, R Koehl, M McCormack","doi":"10.1029/2025GH001501","DOIUrl":"10.1029/2025GH001501","url":null,"abstract":"<p><p>Extreme heat has been associated with adverse health outcomes, yet its impact on asthma exacerbations remains understudied. This is, in part, due to data limitations: research that relies on weather station records and aggregated health statistics cannot resolve fine-scale differences in heat impacts. This study investigates the association between heat wave definitions and summertime asthma-related emergency department visits in Baltimore, Maryland from 2016 to 2022, including 819 adult and 695 pediatric exacerbations. Using geocoded electronic health records and air temperature measurements at several spatial resolutions, we applied a case-crossover design with conditional logistic regressions at the census block group and tract levels. We found strong associations between asthma exacerbations and nighttime heat wave definitions based on relative thresholds of minimum temperatures when census block group or tract level temperature estimates were used. These relationships were significant for both age groups and showed elevated risks in socially vulnerable areas. In contrast, heat wave definitions derived from the city's primary National Weather Service synoptic weather station show associations between asthma and daytime heat extremes, suggesting that the character of the heat hazard depends on the scale at which it is defined. The extreme heat event definition used by Baltimore City's Code Red system showed no significant association with exacerbations. These findings highlight the importance of data resolution in shaping health inferences related to extreme heat in urban environments. Further, this study demonstrates that, regardless of spatial scale, extreme heat is associated with asthma exacerbations in both age groups.</p>","PeriodicalId":48618,"journal":{"name":"Geohealth","volume":"10 ","pages":"e2025GH001501"},"PeriodicalIF":5.0,"publicationDate":"2026-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13147955/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147844547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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