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Swanson A, Holden ZA, Graham J, Warren DA, Noonan C, Landguth E. Daily 1 km terrain resolving maps of surface fine particulate matter for the western United States 2003-2021. Sci Data 2022; 9:466. [PMID: 35918383 PMCID: PMC9345996 DOI: 10.1038/s41597-022-01488-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 06/16/2022] [Indexed: 11/09/2022] Open
Abstract
We developed daily maps of surface fine particulate matter (PM2.5) for the western United States. We used geographically weighted regression fit to air quality station observations with Moderate Resolution Imaging Spectroradiometer (MODIS) aerosol optical depth (AOD) data, and meteorological data to produce daily 1-kilometer resolution PM2.5 concentration estimates from 2003-2020. To account for impacts of stagnant air and inversions, we included estimates of inversion strength based on meteorological conditions, and inversion potential based on human activities and local topography. Model accuracy based on cross-validation was R2 = 0.66. AOD data improve the model in summer and fall during periods of high wildfire activity while the stagnation terms capture the spatial and temporal dynamics of PM2.5 in mountain valleys, particularly during winter. These data can be used to explore exposure and health outcome impacts of PM2.5 across spatiotemporal domains particularly in the intermountain western United States where measurements from monitoring station data are sparse. Furthermore, these data may facilitate analyses of inversion impacts and local topography on exposure and health outcome studies.
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Affiliation(s)
- Alan Swanson
- Center for Population Health Research, School of Public and Community Health Sciences, University of Montana, 32 Campus Drive, Missoula, MT, 59812, USA
| | | | - Jon Graham
- Center for Population Health Research, School of Public and Community Health Sciences, University of Montana, 32 Campus Drive, Missoula, MT, 59812, USA
- Mathematical Sciences, University of Montana, 32 Campus Drive, Missoula, MT, 59812, USA
| | - D Allen Warren
- Center for Population Health Research, School of Public and Community Health Sciences, University of Montana, 32 Campus Drive, Missoula, MT, 59812, USA
| | - Curtis Noonan
- Center for Population Health Research, School of Public and Community Health Sciences, University of Montana, 32 Campus Drive, Missoula, MT, 59812, USA
| | - Erin Landguth
- Center for Population Health Research, School of Public and Community Health Sciences, University of Montana, 32 Campus Drive, Missoula, MT, 59812, USA.
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Landguth EL, Holden ZA, Graham J, Stark B, Mokhtari EB, Kaleczyc E, Anderson S, Urbanski S, Jolly M, Semmens EO, Warren DA, Swanson A, Stone E, Noonan C. The delayed effect of wildfire season particulate matter on subsequent influenza season in a mountain west region of the USA. ENVIRONMENT INTERNATIONAL 2020; 139:105668. [PMID: 32244099 PMCID: PMC7275907 DOI: 10.1016/j.envint.2020.105668] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 03/12/2020] [Accepted: 03/16/2020] [Indexed: 05/21/2023]
Abstract
Particularly in rural settings, there has been little research regarding the health impacts of fine particulate matter (PM2.5) during the wildfire season smoke exposure period on respiratory diseases, such as influenza, and their associated outbreaks months later. We examined the delayed effects of PM2.5 concentrations for the short-lag (1-4 weeks prior) and the long-lag (during the prior wildfire season months) on the following winter influenza season in Montana, a mountainous state in the western United States. We created gridded maps of surface PM2.5 for the state of Montana from 2009 to 2018 using spatial regression models fit with station observations and Moderate Resolution Imaging Spectroradiometer (MODIS) aerosol optical thickness data. We used a seasonal quasi-Poisson model with generalized estimating equations to estimate weekly, county-specific, influenza counts for Montana, associated with delayed PM2.5 concentration periods (short-lag and long-lag effects), adjusted for temperature and seasonal trend. We did not detect an acute, short-lag PM2.5 effect nor short-lag temperature effect on influenza in Montana. Higher daily average PM2.5 concentrations during the wildfire season was positively associated with increased influenza in the following winter influenza season (expected 16% or 22% increase in influenza rate per 1 μg/m3 increase in average daily summer PM2.5 based on two analyses, p = 0.04 or 0.008). This is one of the first observations of a relationship between PM2.5 during wildfire season and influenza months later.
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Affiliation(s)
- Erin L Landguth
- Center for Population Health Research, School of Public and Community Health Sciences, University of Montana, 32 Campus Drive, Missoula, MT 59812, USA.
| | | | - Jonathan Graham
- Center for Population Health Research, School of Public and Community Health Sciences, University of Montana, 32 Campus Drive, Missoula, MT 59812, USA; Mathematical Sciences, University of Montana, 32 Campus Drive, Missoula, MT 59812, USA.
| | - Benjamin Stark
- Mathematical Sciences, University of Montana, 32 Campus Drive, Missoula, MT 59812, USA.
| | - Elham Bayat Mokhtari
- Mathematical Sciences, University of Montana, 32 Campus Drive, Missoula, MT 59812, USA.
| | - Emily Kaleczyc
- Montana Department of Livestock, PO Box 202001, Helena, MT 59620, USA.
| | - Stacey Anderson
- Communicable Disease Control and Prevention Bureau, Department of Health and Human Services, Helena, MT 59620, USA.
| | - Shawn Urbanski
- Rocky Mountain Research Station, Fire Sciences Laboratory, US Forest Service, Missoula, MT, 59808, USA.
| | - Matt Jolly
- Rocky Mountain Research Station, Fire Sciences Laboratory, US Forest Service, Missoula, MT, 59808, USA.
| | - Erin O Semmens
- Center for Population Health Research, School of Public and Community Health Sciences, University of Montana, 32 Campus Drive, Missoula, MT 59812, USA.
| | - Dyer A Warren
- Center for Population Health Research, School of Public and Community Health Sciences, University of Montana, 32 Campus Drive, Missoula, MT 59812, USA.
| | - Alan Swanson
- Center for Population Health Research, School of Public and Community Health Sciences, University of Montana, 32 Campus Drive, Missoula, MT 59812, USA.
| | - Emily Stone
- Mathematical Sciences, University of Montana, 32 Campus Drive, Missoula, MT 59812, USA.
| | - Curtis Noonan
- Center for Population Health Research, School of Public and Community Health Sciences, University of Montana, 32 Campus Drive, Missoula, MT 59812, USA.
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