Plateau Meteorology

Plateau Meteorology >

2015 , Vol. 34 >Issue 3: 666 - 675

DOI: https://doi.org/10.7522/j.issn.1000-0534.2014.00151

Application of ERA Product of Land Surface Temperature in Permafrost Regions of Qinghai-Xizang Plateau

  • QIN Yanhui ,
  • WU Tonghua ,
  • LI Ren ,
  • XIE Changwei ,
  • QIAO Yongping ,
  • CHEN Hao ,
  • ZOU Defu ,
  • ZHANG Lele
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  • Cryosphere Research Station on the Qinghai-Tibet Plateau/State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;2. University of Chinese Academy of Science, Beijing 100049, China

Received date: 2014-07-07

  Online published: 2015-06-28

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Abstract

The land surface temperature(LST) is an important variable between atmosphere and ground surface. The LST can impact permafrost distribution and is also a significant parameter for mapping the permafrost distribution. In order to validate the ERA product of land surface temperature over the Qinghai-Xizang Plateau, the ERA product of LST with the observations at three metrological stations from 1 January 2011 to 31 December 2012 have been compared. And the biases, mean square errors, correlation coefficients, fractional error and index of agreement have been analyzed. The results showed that the ERA product of LST can reflect general characteristics of the three metrological stations in the permafrost region. But LST of the ERA product is a little lower than that of the observations, which Xidatan was 1.7℃ lower, Wudaoliang 1.0℃ lower and Tanggula 0.9℃ lower. The correlation coefficients and explained variances are extremely high, while the mean square errors of the reanalysis data were respectively -1.7℃, -1.5℃ and -0.9℃. The RMSE were 2.5℃, 2.6℃ and 1.7℃ at the three sites respectively. Though the LST of ERA product has some limitations applying in the permafrost regions of the Qinghai-Xizang Plateau, to some extent, it is convincible especially on the uneven distribution and low density of metrological stations in the Qinghai-Xizang Plateau. It is still regarded as an effective proxy data of the land surface temperature in the permafrost region of the Qinghai-Xizang Plateau.

Key words： The Qinghai-Xizang P; ERA product; Land surface tempera; Application; Permafrost

Cite this article

QIN Yanhui , WU Tonghua , LI Ren , XIE Changwei , QIAO Yongping , CHEN Hao , ZOU Defu , ZHANG Lele . Application of ERA Product of Land Surface Temperature in Permafrost Regions of Qinghai-Xizang Plateau[J]. Plateau Meteorology, 2015 , 34(3) : 666 -675 . DOI: 10.7522/j.issn.1000-0534.2014.00151

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