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Remote Sens. 2014, 6(1), 111-134;

A Comparative Study of Three Land Surface Broadband Emissivity Datasets from Satellite Data

State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing 100875, China
Department of Geographical Science, University of Maryland, College Park, MD 20742, USA
Author to whom correspondence should be addressed.
Received: 10 October 2013 / Revised: 18 November 2013 / Accepted: 3 December 2013 / Published: 20 December 2013
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This study compared three broadband emissivity (BBE) datasets from satellite observations. The first is a new global land surface BBE dataset known as the Global Land Surface Satellite (GLASS) BBE. The other two are the North American ASTER Land Surface Emissivity Database (NAALSED) BBE and University of Wisconsin Global Infrared Land Surface Emissivity Database (UWIREMIS) BBE, which were derived from two independent narrowband emissivity products. Firstly, NAALSED BBE was taken as the reference to evaluate the GLASS BBE and UWIREMIS BBE. The GLASS BBE was more close to NAALSED BBE with a bias and root mean square error (RMSE) of −0.001 and 0.007 for the summer season, −0.001 and 0.008 for the winter season, respectively. Then, the spatial distribution and seasonal pattern of global GLASS BBE and UWIREMIS BBE for six dominant land cover types were compared. The BBE difference between vegetated areas and non-vegetated areas can be easily seen from two BBEs. The seasonal variation of GLASS BBE was more reasonable than that of UWIREMIS BBE. Finally, the time series were calculated from GLASS BBE and UWIREMIS BBE using the data from 2003 through 2010. The periodic variations of GLASS BBE were stronger than those of UWIREMIS BBE. The long time series high quality GLASS BBE can be incorporated in land surface models for improving their simulation results. View Full-Text
Keywords: broadband emissivity; GLASS; NAALSED; UWIREMIS; remote sensing broadband emissivity; GLASS; NAALSED; UWIREMIS; remote sensing
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Cheng, J.; Liang, S.; Yao, Y.; Ren, B.; Shi, L.; Liu, H. A Comparative Study of Three Land Surface Broadband Emissivity Datasets from Satellite Data. Remote Sens. 2014, 6, 111-134.

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