GeohealthPub Date : 2024-03-07DOI: 10.1029/2023GH000988
Hugh B. Roland, Jacob Kohlhoff, Kari Lanphier, Sneha Hoysala, Esther G. Kennedy, John Harley, Christopher Whitehead, Matthew O. Gribble
{"title":"Perceived Challenges to Tribally Led Shellfish Toxin Testing in Southeast Alaska: Findings From Key Informant Interviews","authors":"Hugh B. Roland, Jacob Kohlhoff, Kari Lanphier, Sneha Hoysala, Esther G. Kennedy, John Harley, Christopher Whitehead, Matthew O. Gribble","doi":"10.1029/2023GH000988","DOIUrl":"https://doi.org/10.1029/2023GH000988","url":null,"abstract":"<p>Shellfish harvesting is central to coastal Alaska Native ways of life, and tribes in Southeast Alaska are committed to preserving sustainable and safe access to subsistence foods. However, consumption of non-commercially harvested shellfish puts Alaska Native communities at elevated risk of exposure to shellfish toxins. To address a lack of state or federal toxin testing for subsistence and recreational harvesting, tribes across Southeast Alaska have formed their own toxin testing and ocean monitoring program. In this study, we interviewed environmental managers responsible for tribes' testing and others with shellfish toxin expertise to report on perceptions of barriers to tribally led testing in Southeast Alaska. Tribal staff identified 40 prospective key informants to interview, including all environmental managers responsible for shellfish toxin testing at subsistence sites in Southeast Alaska. All 40 individuals were invited to participate in an interview and 27 individuals were interviewed. The most frequently discussed barriers to shellfish toxin testing in Southeast Alaska relate to logistical and staffing difficulties associated with communities' remote locations, inconsistent and inadequate funding and funding structures that increase staff burdens, risk communication challenges related to conveying exposure risks while supporting subsistence harvesting, and implications of climate change-related shifts in toxin exposures for risk perception and risk communication. Participants stressed the social origins of perceived barriers. Disinvestment may create and sustain barriers and be most severely felt in Native communities and remote places. Climate change impacts may interact with social and cultural factors to further complicate risk management.</p>","PeriodicalId":48618,"journal":{"name":"Geohealth","volume":"8 3","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2023GH000988","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140181593","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 : 2024-03-06DOI: 10.1029/2023GH000810
Chansie Yang, Claire Hayhow, Emma Jackman, Danielle Andrews, Daniel Brabander
{"title":"Municipal Compost Public Health, Waste Management, and Urban Agriculture: A Decadal Study of Fugitive Pb in City of Boston, Massachusetts, USA","authors":"Chansie Yang, Claire Hayhow, Emma Jackman, Danielle Andrews, Daniel Brabander","doi":"10.1029/2023GH000810","DOIUrl":"https://doi.org/10.1029/2023GH000810","url":null,"abstract":"<p>Compostable materials constitute roughly half of waste generated globally, but only 5% of waste is actually processed through composting, suggesting that expanding compost programs may be an effective way to process waste. Compostable waste, if properly collected and processed, has value-added end use options including: residential and park landscaping, remediation of brownfield sites, and as growing media in urban agriculture (UA). Since 2001, our lab has partnered with The Food Project, a non-profit focused on youth leadership development through urban farming. From 2006 to 2022 we collected compost materials that were delivered to the farm from a variety of local sources and analyzed a suite of biogeochemical properties including lead (Pb) concentrations, organic carbon, and grain size distribution. Pb concentrations of Boston's municipal compost always exceeded the current City of San Francisco soil and compost purchase standard (80 μg/g). In 2012 Boston's composting program was halted when it exceeded the 400 μg/g Environmental Protection Agency's Pb in soil benchmark. Urban Pb is geomobile and must be managed to minimize resuspension and transport of fines whose Pb concentration is often elevated compared to bulk compost. Consequently, urban farmers have to source lower Pb compost from suburban suppliers at significantly greater cost. Over a 15 year period and through several city vendor contracts, Pb concentrations in municipal compost remain at levels that warrant continued surveillance and risk assessment.</p>","PeriodicalId":48618,"journal":{"name":"Geohealth","volume":"8 3","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2023GH000810","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140043039","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 : 2024-03-06DOI: 10.1029/2023GH000938
Huy Tran, Erin Polka, Jonathan J. Buonocore, Ananya Roy, Beth Trask, Hillary Hull, Saravanan Arunachalam
{"title":"Air Quality and Health Impacts of Onshore Oil and Gas Flaring and Venting Activities Estimated Using Refined Satellite-Based Emissions","authors":"Huy Tran, Erin Polka, Jonathan J. Buonocore, Ananya Roy, Beth Trask, Hillary Hull, Saravanan Arunachalam","doi":"10.1029/2023GH000938","DOIUrl":"https://doi.org/10.1029/2023GH000938","url":null,"abstract":"<p>Emissions from flaring and venting (FV) in oil and gas (O&G) production are difficult to quantify due to their intermittent activities and lack of adequate monitoring and reporting. Given their potentially significant contribution to total emissions from the O&G sector in the United States, we estimate emissions from FV using Visible Infrared Imaging Radiometer Suite satellite observations and state/local reported data on flared gas volume. These refined estimates are higher than those reported in the National Emission Inventory: by up to 15 times for fine particulate matter (PM<sub>2.5</sub>), two times for sulfur dioxides, and 22% higher for nitrogen oxides (NO<sub>x</sub>). Annual average contributions of FV to ozone (O<sub>3</sub>), NO<sub>2</sub>, and PM<sub>2.5</sub> in the conterminous U.S. (CONUS) are less than 0.15%, but significant contributions of up to 60% are found in O&G fields with FV. FV contributions are higher in winter than in summer months for O<sub>3</sub> and PM<sub>2.5</sub>; an inverse behavior is found for NO<sub>2</sub>. Nitrate aerosol contributions to PM<sub>2.5</sub> are highest in the Denver basin whereas in the Permian and Bakken basins, sulfate and elemental carbon aerosols are the major contributors. Over four simulated months in 2016 for the entire CONUS, FV contributes 210 additional instances of exceedances to the daily maximum 8-hr average O<sub>3</sub> and has negligible contributions to exceedance of NO<sub>2</sub> and PM<sub>2.5</sub>, given the current form of the national ambient air quality standards. FV emissions are found to cause over $7.4 billion in health damages, 710 premature deaths, and 73,000 asthma exacerbations among children annually.</p>","PeriodicalId":48618,"journal":{"name":"Geohealth","volume":"8 3","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2023GH000938","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140043191","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 : 2024-02-28DOI: 10.1029/2022GH000764
Tafesse Kefyalew Estifanos, Brendan Fisher, Gillian L. Galford, Taylor H. Ricketts
{"title":"Impacts of Deforestation on Childhood Malaria Depend on Wealth and Vector Biology","authors":"Tafesse Kefyalew Estifanos, Brendan Fisher, Gillian L. Galford, Taylor H. Ricketts","doi":"10.1029/2022GH000764","DOIUrl":"https://doi.org/10.1029/2022GH000764","url":null,"abstract":"<p>Ecosystem change can profoundly affect human well-being and health, including through changes in exposure to vector-borne diseases. Deforestation has increased human exposure to mosquito vectors and malaria risk in Africa, but there is little understanding of how socioeconomic and ecological factors influence the relationship between deforestation and malaria risk. We examined these interrelationships in six sub-Saharan African countries using demographic and health survey data linked to remotely sensed environmental variables for 11,746 children under 5 years old. We found that the relationship between deforestation and malaria prevalence varies by wealth levels. Deforestation is associated with increased malaria prevalence in the poorest households, but there was not significantly increased malaria prevalence in the richest households, suggesting that deforestation has disproportionate negative health impacts on the poor. In poorer households, malaria prevalence was 27%–33% larger for one standard deviation increase in deforestation across urban and rural populations. Deforestation is also associated with increased malaria prevalence in regions where <i>Anopheles gambiae</i> and <i>Anopheles funestus</i> are dominant vectors, but not in areas of <i>Anopheles arabiensis</i>. These findings indicate that deforestation is an important driver of malaria risk among the world's most vulnerable children, and its impact depends critically on often-overlooked social and biological factors. An in-depth understanding of the links between ecosystems and human health is crucial in designing conservation policies that benefit people and the environment.</p>","PeriodicalId":48618,"journal":{"name":"Geohealth","volume":"8 3","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2022GH000764","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139993878","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 : 2024-02-26DOI: 10.1029/2023GH000996
Greta K. Martin, Katelyn O’Dell, Patrick L. Kinney, Marcia Pescador-Jimenez, David Rojas-Rueda, Robert Canales, Susan C. Anenberg
{"title":"Tracking Progress Toward Urban Nature Targets Using Landcover and Vegetation Indices: A Global Study for the 96 C40 Cities","authors":"Greta K. Martin, Katelyn O’Dell, Patrick L. Kinney, Marcia Pescador-Jimenez, David Rojas-Rueda, Robert Canales, Susan C. Anenberg","doi":"10.1029/2023GH000996","DOIUrl":"https://doi.org/10.1029/2023GH000996","url":null,"abstract":"<p>Access to urban natural space, including blue and greenspace, is associated with improved health. In 2021, the C40 Cities Climate Leadership Group set 2030 Urban Nature Declaration (UND) targets: “Quality Total Cover” (30% green area within each city) and “Equitable Spatial Distribution” (70% of the population living close to natural space). We evaluate progress toward these targets in the 96 C40 cities using globally available, high-resolution data sets for landcover and normalized difference vegetation index (NDVI). We use the European Space Agency (ESA)'s WorldCover data set to define greenspace with discrete landcover categories and ESA's Sentinel-2A to calculate NDVI, adding the “open water” landcover category to characterize total natural space. We compare 2020 levels of urban green and natural space to the two UND targets and predict the city-specific NDVI level consistent with the UND targets using linear regressions. The 96-city mean NDVI was 0.538 (range: 0.148, 0.739). Most (80%) cities meet the Quality Total Cover target, and nearly half (47%) meet the Equitable Spatial Distribution target. Landcover-measured greenspace and total natural space were strong (mean <i>R</i><sup>2</sup> = 0.826) and moderate (mean <i>R</i><sup>2</sup> = 0.597) predictors of NDVI and our NDVI-based natural space proximity measure, respectively. The 96-city mean predicted NDVI value of meeting the UND targets was 0.478 (range: 0.352–0.565) for Quality Total Cover and 0.660 (range: 0.498–0.767) for Equitable Spatial Distribution. Our translation of the area- and access-based metrics common in urban natural space targets into the NDVI metric used in epidemiology allows for quantifying the health benefits of achieving such targets.</p>","PeriodicalId":48618,"journal":{"name":"Geohealth","volume":"8 3","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2023GH000996","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139976529","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 : 2024-02-23DOI: 10.1029/2023GH000941
Brittany N. Lopez Barreto, Erin L. Hestir, Christine M. Lee, Marc W. Beutel
{"title":"Satellite Remote Sensing: A Tool to Support Harmful Algal Bloom Monitoring and Recreational Health Advisories in a California Reservoir","authors":"Brittany N. Lopez Barreto, Erin L. Hestir, Christine M. Lee, Marc W. Beutel","doi":"10.1029/2023GH000941","DOIUrl":"https://doi.org/10.1029/2023GH000941","url":null,"abstract":"<p>Cyanobacterial harmful algal blooms (cyanoHABs) can harm people, animals, and affect consumptive and recreational use of inland waters. Monitoring cyanoHABs is often limited. However, chlorophyll-<i>a</i> (chl-<i>a</i>) is a common water quality metric and has been shown to have a relationship with cyanobacteria. The World Health Organization (WHO) recently updated their previous 1999 cyanoHAB guidance values (GVs) to be more practical by basing the GVs on chl-<i>a</i> concentration rather than cyanobacterial counts. This creates an opportunity for widespread cyanoHAB monitoring based on chl-<i>a</i> proxies, with satellite remote sensing (SRS) being a potentially powerful tool. We used Sentinel-2 (S2) and Sentinel-3 (S3) to map chl-<i>a</i> and cyanobacteria, respectively, classified chl-<i>a</i> values according to WHO GVs, and then compared them to cyanotoxin advisories issued by the California Department of Water Resources (DWR) at San Luis Reservoir, key infrastructure in California's water system. We found reasonably high rates of total agreement between advisories by DWR and SRS, however rates of agreement varied for S2 based on algorithm. Total agreement was 83% for S3, and 52%–79% for S2. False positive and false negative rates for S3 were 12% and 23%, respectively. S2 had 12%–80% false positive rate and 0%–38% false negative rate, depending on algorithm. Using SRS-based chl-<i>a</i> GVs as an early indicator for possible exposure advisories and as a trigger for in situ sampling may be effective to improve public health warnings. Implementing SRS for cyanoHAB monitoring could fill temporal data gaps and provide greater spatial information not available from in situ measurements alone.</p>","PeriodicalId":48618,"journal":{"name":"Geohealth","volume":"8 2","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2023GH000941","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139937310","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 : 2024-02-16DOI: 10.1029/2024GH001022
Jennifer D. Stowell, Susan Anenberg, Benjamin F. Zaitchik, Daniel Q. Tong, Claire J. Horwell, Dennis P. Stolle, Rita R. Colwell, Christine McEntee
{"title":"Health-Damaging Climate Events Highlight the Need for Interdisciplinary, Engaged Research","authors":"Jennifer D. Stowell, Susan Anenberg, Benjamin F. Zaitchik, Daniel Q. Tong, Claire J. Horwell, Dennis P. Stolle, Rita R. Colwell, Christine McEntee","doi":"10.1029/2024GH001022","DOIUrl":"https://doi.org/10.1029/2024GH001022","url":null,"abstract":"<p>In 2023 human populations experienced multiple record-breaking climate events, with widespread impacts on human health and well-being. These events include extreme heat domes, drought, severe storms, flooding, and wildfires. Due to inherent lags in the climate system, we can expect such extremes to continue for multiple decades after reaching net zero carbon emissions. Unfortunately, despite these significant current and future impacts, funding for research in climate and health has lagged behind that for other geoscience and biomedical research. While some initial efforts from funding agencies are evident, there is still a significant need to increase the resources available for multidisciplinary research in the face of this issue. As a group of experts at this important intersection, we call for a more concerted effort to encourage interdisciplinary and policy-relevant investigations into the detrimental health effects of continued climate change.</p>","PeriodicalId":48618,"journal":{"name":"Geohealth","volume":"8 2","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2024GH001022","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139745052","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 : 2024-02-16DOI: 10.1029/2023GH000895
Liv Yoon, Gregory R. A. Richardson, Melissa Gorman
{"title":"Reflections on a Century of Extreme Heat Event-Related Mortality Reporting in Canada","authors":"Liv Yoon, Gregory R. A. Richardson, Melissa Gorman","doi":"10.1029/2023GH000895","DOIUrl":"https://doi.org/10.1029/2023GH000895","url":null,"abstract":"<p>Climate change is causing more frequent and severe extreme heat events (EHEs) in Canada, resulting in significant loss of life. However, patterns across mortality reporting for historical EHEs have not been analyzed. To address this gap, we studied deaths in Canadian EHEs from 1936 to 2021, identifying trends and challenges. Our analysis revealed inconsistencies in mortality data, discrepancies between vulnerable populations identified, difficulties in determining the cause of death, and inconsistent reporting on social vulnerability indicators. We provide some observations that could help inform solutions to address the gaps and challenges, by moving toward more consistent and comprehensive reporting to ensure no population is overlooked. Accurately accounting for affected populations could help better target evidence-based interventions, and reduce vulnerability to extreme heat.</p>","PeriodicalId":48618,"journal":{"name":"Geohealth","volume":"8 2","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2023GH000895","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139745053","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}
{"title":"Identification of Neighborhood Hotspots via the Cumulative Hazard Index: Results From a Community-Partnered Low-Cost Sensor Deployment","authors":"Sakshi Jain, Rivkah Gardner-Frolick, Nika Martinussen, Dan Jackson, Amanda Giang, Naomi Zimmerman","doi":"10.1029/2023GH000935","DOIUrl":"https://doi.org/10.1029/2023GH000935","url":null,"abstract":"<p>The Strathcona neighborhood in Vancouver is particularly vulnerable to environmental injustice due to its close proximity to the Port of Vancouver, and a high proportion of Indigenous and low-income households. Furthermore, local sources of air pollutants (e.g., roadways) can contribute to small-scale variations within communities. The aim of this study was to assess hyperlocal air quality patterns (intra-neighborhood variability) and compare them to average Vancouver concentrations (inter-neighborhood variability) to identify possible disparities in air pollution exposure for the Strathcona community. Between April and August 2022, 11 low-cost sensors (LCS) were deployed within the neighborhood to measure PM<sub>2.5</sub>, NO<sub>2</sub>, and O<sub>3</sub> concentrations. The collected 15-min concentrations were down-averaged to daily concentrations and compared to greater Vancouver region concentrations to quantify the exposures faced by the community relative to the rest of the region. Concentrations were also estimated at every 25 m grid within the neighborhood to quantify the distribution of air pollution within the community. Using population information from census data, cumulative hazard indices (CHIs) were computed for every dissemination block. We found that although PM<sub>2.5</sub> concentrations in the neighborhood were lower than regional Vancouver averages, daily NO<sub>2</sub> concentrations and summer O<sub>3</sub> concentrations were consistently higher. Additionally, although CHIs varied daily, we found that CHIs were consistently higher in areas with high commercial activity. As such, estimating CHI for dissemination blocks was useful in identifying hotspots and potential areas of concern within the neighborhood. This information can collectively assist the community in their advocacy efforts.</p>","PeriodicalId":48618,"journal":{"name":"Geohealth","volume":"8 2","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2023GH000935","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139739249","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 : 2024-02-10DOI: 10.1029/2023GH000937
Lisa M. Bramer, Holly M. Dixon, Diana Rohlman, Richard P. Scott, Rachel L. Miller, Laurel Kincl, Julie B. Herbstman, Katrina M. Waters, Kim A. Anderson
{"title":"PM2.5 Is Insufficient to Explain Personal PAH Exposure","authors":"Lisa M. Bramer, Holly M. Dixon, Diana Rohlman, Richard P. Scott, Rachel L. Miller, Laurel Kincl, Julie B. Herbstman, Katrina M. Waters, Kim A. Anderson","doi":"10.1029/2023GH000937","DOIUrl":"https://doi.org/10.1029/2023GH000937","url":null,"abstract":"<p>To understand how chemical exposure can impact health, researchers need tools that capture the complexities of personal chemical exposure. In practice, fine particulate matter (PM<sub>2.5</sub>) air quality index (AQI) data from outdoor stationary monitors and Hazard Mapping System (HMS) smoke density data from satellites are often used as proxies for personal chemical exposure, but do not capture total chemical exposure. Silicone wristbands can quantify more individualized exposure data than stationary air monitors or smoke satellites. However, it is not understood how these proxy measurements compare to chemical data measured from wristbands. In this study, participants wore daily wristbands, carried a phone that recorded locations, and answered daily questionnaires for a 7-day period in multiple seasons. We gathered publicly available daily PM<sub>2.5</sub> AQI data and HMS data. We analyzed wristbands for 94 organic chemicals, including 53 polycyclic aromatic hydrocarbons. Wristband chemical detections and concentrations, behavioral variables (e.g., time spent indoors), and environmental conditions (e.g., PM<sub>2.5</sub> AQI) significantly differed between seasons. Machine learning models were fit to predict personal chemical exposure using PM<sub>2.5</sub> AQI only, HMS only, and a multivariate feature set including PM<sub>2.5</sub> AQI, HMS, and other environmental and behavioral information. On average, the multivariate models increased predictive accuracy by approximately 70% compared to either the AQI model or the HMS model for all chemicals modeled. This study provides evidence that PM<sub>2.5</sub> AQI data alone or HMS data alone is insufficient to explain personal chemical exposures. Our results identify additional key predictors of personal chemical exposure.</p>","PeriodicalId":48618,"journal":{"name":"Geohealth","volume":"8 2","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1029/2023GH000937","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139720151","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}