Assessment of fine particulate matter (PM2.5) in metropolitan Karachi through satellite and ground–based measurements

Mansha, Muhammad; Ghauri, Badar

doi:doi:10.1117/1.3625615

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Journal of Applied Remote Sensing / Volume 5 / Research Papers

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Assessment of fine particulate matter (PM_2.5) in metropolitan Karachi through satellite and ground–based measurements

J. Appl. Remote Sens. 5, 053546 (Aug 24, 2011); http://dx.doi.org/10.1117/1.3625615

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Abstract

References (26)

Muhammad Mansha and Badar Ghauri

Pakistan Space and Upper Atmosphere Research Commission (SUPARCO), Karachi, Sindh 52570 Pakistan

Institute of Space Technology (IST), Department of Remote Sensing and Geoinformation Sciences, Karachi, Sindh 52570 Pakistan

Recent advances in remote sensing have provided new avenues for measuring, monitoring, and understanding processes that lead to atmospheric pollution. Space-based measurements in combination with ground-based information provide the complete spatial and temporal variation, as well as regional and global distribution of air pollutants. The present study involves integration of satellite and ground-based measurements and back trajectory analysis concerning the transport of pollutants from different sources. Satellite-derived aerosol optical depth (AOD) represents integrated atmospheric columnar loading of aerosols and can be used as a substitute to assess surface particulate matter air quality, especially where surface measurements are not available. This study is based on investigation of seasonal and spatial variation of aerosol concentration over Karachi, Pakistan using satellite-based AOD data from moderate resolution imaging spectroradiometer on board Terra/Aqua Satellites, ground-based data of two sun-photometers (NASA's AERONET) and other in situ measurements using DustTrak Particulate Monitor at Karachi (24.87° N, 67.03° E), Pakistan.

History

Received Apr 20, 2011
Accepted Jul 26, 2011
Revised Jul 22, 2011
Published online Aug 24, 2011

Digital Object Identifier

http://dx.doi.org/10.1117/1.3625615

Citation

Muhammad Mansha and Badar Ghauri, "Assessment of fine particulate matter (PM_2.5) in metropolitan Karachi through satellite and ground–based measurements", J. Appl. Remote Sens. 5, 053546 (Aug 24, 2011); http://dx.doi.org/10.1117/1.3625615