Validating a new algorithm for estimating aerosol optical depths over land from MODIS imagery

Authors: Zhong, B.1; Liang, S.1; Holben, B.2

Source: International Journal of Remote Sensing, Volume 28, Number 18, 2007 , pp. 4207-4214(8)

Publisher: Taylor and Francis Ltd

Buy & download fulltext article:

OR

Price: $61.16 plus tax (Refund Policy)

Abstract:

Aerosols greatly affect the signals of satellite sensor imagery for remote sensing of land surfaces and play a dual role in global climate change and the hydrological cycle. However, there has not been a reliable method for estimating aerosol properties over land directly from multispectral remotely sensed imagery. In a recent study, a new algorithm to estimate aerosol optical depths (AODs) from Moderate-Resolution Imaging Spectroradiometer (MODIS) imagery suitable for all land surfaces was proposed. It is based on a sequence of imagery over a period of time with the assumption that the surface property is relatively stable and atmospheric conditions vary much more dramatically. Although this algorithm was validated over several sites, more validation was necessary. In this study, this algorithm was validated using 3-month measurements at 25 AErosol RObotic NETwork (AERONET) sites in North America. The validation results show that this algorithm can estimate AODs with close agreement with the AERONET measurements [R 2 = 0.69, root mean square error (RMSE) 0.06].

Document Type: Research Article

DOI: http://dx.doi.org/10.1080/01431160701468984

Affiliations: 1: Department of Geography, University of Maryland, USA 2: NASA Goddard Space Flight Center, Greenbelt, USA

Publication date: January 1, 2007

More about this publication?
Related content

Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content

Text size:

A | A | A | A
Share this item with others: These icons link to social bookmarking sites where readers can share and discover new web pages. print icon Print this page