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Spatial scales of pollution from variable resolution satellite imaging.
Environ Pollut. 2013 Jan; 172:131-8.EP

Abstract

The Moderate Resolution Imaging Spectroradiometer (MODIS) provides daily global coverage, but the 10 km resolution of its aerosol optical depth (AOD) product is not adequate for studying spatial variability of aerosols in urban areas. Recently, a new Multi-Angle Implementation of Atmospheric Correction (MAIAC) algorithm was developed for MODIS which provides AOD at 1 km resolution. Using MAIAC data, the relationship between MAIAC AOD and PM(2.5) as measured by the EPA ground monitoring stations was investigated at varying spatial scales. Our analysis suggested that the correlation between PM(2.5) and AOD decreased significantly as AOD resolution was degraded. This is so despite the intrinsic mismatch between PM(2.5) ground level measurements and AOD vertically integrated measurements. Furthermore, the fine resolution results indicated spatial variability in particle concentration at a sub-10 km scale. Finally, this spatial variability of AOD within the urban domain was shown to depend on PM(2.5) levels and wind speed.

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Authors+Show Affiliations

Chudnovsky AA
Department of Environmental Health, Harvard School of Public Health, 401 Park Drive, Landmark Center Room 420, Boston, MA 02115, USA. achudnov@hsph.harvard.edu
Kostinski A
No affiliation info available
Lyapustin A
No affiliation info available
Koutrakis P
No affiliation info available

MeSH

AerosolsAir PollutantsAir PollutionEnvironmental MonitoringParticulate MatterRemote Sensing TechnologySpacecraft

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

23026774

Citation

Chudnovsky, Alexandra A., et al. "Spatial Scales of Pollution From Variable Resolution Satellite Imaging." Environmental Pollution (Barking, Essex : 1987), vol. 172, 2013, pp. 131-8.
Chudnovsky AA, Kostinski A, Lyapustin A, et al. Spatial scales of pollution from variable resolution satellite imaging. Environ Pollut. 2013;172:131-8.
Chudnovsky, A. A., Kostinski, A., Lyapustin, A., & Koutrakis, P. (2013). Spatial scales of pollution from variable resolution satellite imaging. Environmental Pollution (Barking, Essex : 1987), 172, 131-8. https://doi.org/10.1016/j.envpol.2012.08.016
Chudnovsky AA, et al. Spatial Scales of Pollution From Variable Resolution Satellite Imaging. Environ Pollut. 2013;172:131-8. PubMed PMID: 23026774.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Spatial scales of pollution from variable resolution satellite imaging. AU - Chudnovsky,Alexandra A, AU - Kostinski,Alex, AU - Lyapustin,Alexei, AU - Koutrakis,Petros, Y1 - 2012/09/29/ PY - 2012/05/12/received PY - 2012/08/29/revised PY - 2012/08/30/accepted PY - 2012/10/3/entrez PY - 2012/10/3/pubmed PY - 2013/1/23/medline SP - 131 EP - 8 JF - Environmental pollution (Barking, Essex : 1987) JO - Environ Pollut VL - 172 N2 - The Moderate Resolution Imaging Spectroradiometer (MODIS) provides daily global coverage, but the 10 km resolution of its aerosol optical depth (AOD) product is not adequate for studying spatial variability of aerosols in urban areas. Recently, a new Multi-Angle Implementation of Atmospheric Correction (MAIAC) algorithm was developed for MODIS which provides AOD at 1 km resolution. Using MAIAC data, the relationship between MAIAC AOD and PM(2.5) as measured by the EPA ground monitoring stations was investigated at varying spatial scales. Our analysis suggested that the correlation between PM(2.5) and AOD decreased significantly as AOD resolution was degraded. This is so despite the intrinsic mismatch between PM(2.5) ground level measurements and AOD vertically integrated measurements. Furthermore, the fine resolution results indicated spatial variability in particle concentration at a sub-10 km scale. Finally, this spatial variability of AOD within the urban domain was shown to depend on PM(2.5) levels and wind speed. SN - 1873-6424 UR - https://www.unboundmedicine.com/medline/citation/23026774/Spatial_scales_of_pollution_from_variable_resolution_satellite_imaging_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0269-7491(12)00400-9 DB - PRIME DP - Unbound Medicine ER -