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Critical Evaluation of Cloud Contamination in the Misr Aerosol Products Using Modis Cloud Masking Products : Volume 6, Issue 6 (20/11/2013)

By Shi, Y.

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Book Id: WPLBN0003990108
Format Type: PDF Article :
File Size: Pages 23
Reproduction Date: 2015

Title: Critical Evaluation of Cloud Contamination in the Misr Aerosol Products Using Modis Cloud Masking Products : Volume 6, Issue 6 (20/11/2013)  
Author: Shi, Y.
Volume: Vol. 6, Issue 6
Language: English
Subject: Science, Atmospheric, Measurement
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2013
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Reid, J. S., Liu, B., Zhang, J., Hyer, E. J., & Shi, Y. (2013). Critical Evaluation of Cloud Contamination in the Misr Aerosol Products Using Modis Cloud Masking Products : Volume 6, Issue 6 (20/11/2013). Retrieved from http://www.ebooklibrary.org/


Description
Description: Department of Atmospheric Science, University of North Dakota, Grand Forks, ND, USA. For the first time, using the Terra Moderate Resolution Imaging Spectroradiometer (MODIS)-based cloud screening methods, we have evaluated the impacts of cloud contamination on the Terra Multi-angle Imaging Spectroradiometer (MISR) aerosol optical depth (AOD) product. Our study, based on one year of collocated MISR and MODIS data, suggests that cloud contamination exists in both over-water and over-land MISR AOD data with heavier cloud contamination occurring over the high latitude Southern hemispheric oceans. On average globally, our study shows that thin cirrus cloud contamination introduces a possible ~0.01 high bias for the over-water MISR AOD retrievals. Over the mid to high latitude oceans and Southeast Asia, this number increases to 0.015–0.02. However, biases much larger than this mean value are found in individual retrievals. This study suggests that cloud-clearing methods using observations from MISR alone, which has only visible and near infrared channels, may not be sufficient. Measurements from MODIS can be applied to assist cloud-clearing of the MISR aerosol retrievals. Cloud screening algorithms based on multi-sensor approaches are feasible and should be considered for current and future satellite aerosol studies.

Summary
Critical evaluation of cloud contamination in the MISR aerosol products using MODIS cloud masking products

Excerpt
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