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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 13 — Jul. 1, 2013
  • pp: 15654–15663

Atmospheric corrections of passive microwave data for estimating land surface temperature

Zeng-Lin Liu, Hua Wu, Bo-Hui Tang, Shi Qiu, and Zhao-Liang Li  »View Author Affiliations


Optics Express, Vol. 21, Issue 13, pp. 15654-15663 (2013)
http://dx.doi.org/10.1364/OE.21.015654


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Abstract

Quantitative analysis of the atmospheric effects on observations made by the Advanced Microwave Scanning Radiometer-Earth Observing System (AMSR-E) has been performed. The differences between observed brightness temperatures at the top of the atmosphere and at the bottom of the atmosphere were analyzed using a database of simulated observations, which were configured to replicate AMSR-E data. The differences between observed brightness temperatures at the top of the atmosphere and land surface-emitted brightness temperatures were also computed. Quantitative results show that the atmosphere has different effects on brightness temperatures in different AMSR-E channels. Atmospheric effects can be neglected at 6.925 and 10.65 GHz, when the standard deviation is less than 1 K. However, at other frequencies and polarizations, atmospheric effects on observations should not be neglected. An atmospheric correction algorithm was developed at 18.7 GHz vertical polarization, based on the classic split-window algorithm used in thermal remote sensing. Land surface emission can be estimated with RMSE = 0.99 K using the proposed method. Using the known land surface emissivity, Land Surface Temperature (LST) can be retrieved. The RMSE of retrieved LST is 1.17 K using the simulated data.

© 2013 OSA

OCIS Codes
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(300.6370) Spectroscopy : Spectroscopy, microwave
(010.1285) Atmospheric and oceanic optics : Atmospheric correction
(280.4991) Remote sensing and sensors : Passive remote sensing

ToC Category:
Remote Sensing

History
Original Manuscript: May 22, 2013
Revised Manuscript: June 17, 2013
Manuscript Accepted: June 17, 2013
Published: June 21, 2013

Citation
Zeng-Lin Liu, Hua Wu, Bo-Hui Tang, Shi Qiu, and Zhao-Liang Li, "Atmospheric corrections of passive microwave data for estimating land surface temperature," Opt. Express 21, 15654-15663 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-13-15654


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