Improved retrieval of aerosol optical depth from MODIS measurements over the Pearl River delta region

Ming Zhang; Lanlan Wang; Lei Zhang

doi:10.1117/12.3048712

27 November 2024 Improved retrieval of aerosol optical depth from MODIS measurements over the Pearl River delta region

Ming Zhang, Lanlan Wang, Lei Zhang

Author Affiliations +

Proceedings Volume 13402, International Conference on Remote Sensing, Mapping, and Geographic Information Systems (RSMG 2024); 1340214 (2024) https://doi.org/10.1117/12.3048712
Event: International Conference on Remote Sensing, Mapping, and Geographic Information Systems (RSMG 2024), 2024, Zhengzhou, China

Abstract

An improved aerosol retrieval method based on the Moderate Resolution Imaging Spectroradiometer (MODIS) dark target algorithm was introduced to retrieve the aerosol properties over the Pearl River Delta (PRD) region. Empirical relationships between visible and shortwave infrared bands were built based on the regression analysis of MODIS surface reflectance products at a spatial resolution of 500m over the PRD region, so as to separate surface contributions from satellite-measured signals. In addition, local representative aerosol types for the PRD region were derived based on the statistics of ground-based Aerosol Robotic Network observations. The validation result showed that the newly derived 500m aerosol optical depth (AOD) product had a slight performance advantage over MODIS 10km and 3km aerosol products. It also had significantly better spatial coverage than the two MODIS aerosol products. The high spatial resolution aerosol products brought new information about distributions of aerosol sources, and they were much more suitable for the aerosol studies over the urban areas than the MODIS aerosol products at a coarse resolution.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Ming Zhang, Lanlan Wang, and Lei Zhang "Improved retrieval of aerosol optical depth from MODIS measurements over the Pearl River delta region", Proc. SPIE 13402, International Conference on Remote Sensing, Mapping, and Geographic Information Systems (RSMG 2024), 1340214 (27 November 2024); https://doi.org/10.1117/12.3048712

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE