Analysis on MODIS Albedo Retrieval Quality over the Qinghai-Xizang Plateau

  • CHEN Aijun ,
  • LIANG Xuewei ,
  • BIAN Lingen ,
  • LIU Yujie
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  • Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science & Technology, Nanjing 210044, China;2. School of Atmospheric Physics, Nanjing University of Information Science & Technology, Nanjing 210044, China;3. Chinese Academy of Meteorology Science, Beijing 100081, China;4. National Satellite Meteorology Center, Beijing 100081, China

Received date: 2014-09-01

  Online published: 2016-04-28

Abstract

For a comprehensive understanding of the retrieval quality of MODIS land surface albedo (LSA) product in the Qinghai-Xizang Plateau, it is statistically analyzed with MCD43B2, the retrieval quality data accompanied with the MODIS LSA, in this paper, and results are as following:(1) the mean retrieval effectiveness (MRE) in each retrieval period is above 80%. The MREs are low in winter and summer, while MREs are high to more than 90% in spring and autumn. (2) Among all LSAs, those with the best quality of full inversions (BQFI) have the highest percentage. The percentages of LSAs with the BQFI in spring and autumn are high and the highest one is nearly up to 80%. Meanwhile, the percentages of LSAs with the BQFI in winter and summer are low and the lowest one is a little more than 50%. (3) The mean percentage for snow-free LSAs is between 70% and 95%, and the snow-free LSAs are mainly those with the BQFI. However, the mean percentage for snow LSAs is about 10%, and the snow LSAs are mainly derived with the magnitude inversion. All above indicate that MODIS LSA product could provide spatio-temporal continuousness, high-accuracy LSA for most area of the Qinghai-Xizang Plateau, but the MREs and the accuracy in winter and summer, as well as the accuracy of the snow LSAs should be further improved in the future.

Cite this article

CHEN Aijun , LIANG Xuewei , BIAN Lingen , LIU Yujie . Analysis on MODIS Albedo Retrieval Quality over the Qinghai-Xizang Plateau[J]. Plateau Meteorology, 2016 , 35(2) : 277 -284 . DOI: 10.7522/j.issn.1000-0534.2015.00015

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