Validation of MODIS and MISR based satellite AOT data with in- situ data for Lahore, Pakistan. | [Pakistan Journal of Meterology • 2015]

Author(s):

1. M. U Khan: Institute of Space Technology, SUPARCO Road, Karachi, Pakistan

2. B. Ghauri: Institute of Space Technology, SUPARCO Road, Karachi, Pakistan

3. M. Bilal: The Hong Kong Polytechnic University, Hong Kong

Abstract:

Satellite data is important for determination of variations in aerosolsin space and time. The accuracy and validation of satellite data is necessary to evaluate the accuracy for air quality in a particular region. Satellite derived air pollution measures offer the advantage of providing global coverage. The aerosol optical thickness (AOT) measured from satellite data was validated with the ground based sun photometer AERONET measured AOT for Lahore metropolitan city of Pakistan. The satellite based AOT data of MODIS and MISR sensors on board TERRA satellite were extracted in radial spatial regions of 25 Km and 44 Km respectively from the AERONET station. The level 2 satellite data and AERONET data products were used for the validation purpose. The green wavelength bands had higher values and good correlation for both MISR and MODIS satellites, having values of coefficient of correlation as 0.86 and 0.84 with RMSE of 0.08 and 0.22 respectively with AERONET mean AOT data measured for 2 hour (± 1hour) time interval centered at satellite pass time. Thus proving the validity of aerosol satellite data as proxy to ground measurements.

Page(s): 23-38

DOI: DOI not available

Published: Journal: Pakistan Journal of Meterology, Volume: 11, Issue: 22, Year: 2015

Keywords:

Keywords are not available for this article.

References:

References are not available for this document.

Citations

Citations are not available for this document.

Citations

Downloads

Views