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Shunlin Liang^abc, Xiang Zhao^ab, Suhong Liu^ad, Wenping Yuan^ab, Xiao Cheng^ab, Zhiqiang Xiao^ad, Xiaotong Zhang^ab, Qiang Liu^ab, Jie Cheng^ab, Hairong Tang^e, Yonghua Qu^ab, Yancheng Bo^ad, Ying Qu^ad, Huazhong Ren^ad, Kai Yu^e & John Townshend^c

 

^a The State Key Laboratory of Remote Sensing Science, Jointly Sponsored by Beijing Normal University and Institute of Remote Sensing Applications of Chinese Academy of Sciences, Beijing, China

^b College of Global Change and Earth System Sciences, Beijing Normal University, Beijing, China

^c Department of Geographical Sciences, University of Maryland, MD, USA

^d School of Geography, Beijing Normal University, Beijing, China

^e Institute of Electronics, Chinese Academy of Sciences, Beijing, China

 

Abstract

Recently, five Global LAnd Surface Satellite (GLASS) products have been released: leaf area index (LAI), shortwave broadband albedo, longwave broadband emissivity, incident short radiation, and photosynthetically active radiation (PAR). The first three products cover the years 1982–2012 (LAI) and 1981–2010 (albedo and emissivity) at 1–5 km and 8-day resolutions, and the last two radiation products span the period 2008–2010 at 5 km and 3-h resolutions. These products have been evaluated and validated, and the preliminary results indicate that they are of higher quality and accuracy than the existing products. In particular, the first three products have much longer time series, and are therefore highly suitable for various environmental studies. This paper outlines the algorithms, product characteristics, preliminary validation results, potential applications and some examples of initial analysis of these products.

 

KEY WORDS: earth observation, global environmental change, remote sensing

 

PUBLISHED BY: INTERNATIONAL JOURNAL OF DIGITAL EARTH, 2013, 6 (Sup 1, SI): 5-33.

 

DOWNLOAD PDF: http://www.tandfonline.com/doi/pdf/10.1080/17538947.2013.805262