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Volume 28 Issue 5

Sep.  2011

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Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 2011 >  28(5): 1030-1038

Accumulation over the Greenland Ice Sheet as Represented in Reanalysis Data

  • 1.

    Nansen--Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,Mohn--Sverdrup Center, Nansen Environmental and Remote Sensing Center, Bergen 5006, Norway, Nansen Scientific Society, Bergen 5006, Norway,Mohn--Sverdrup Center, Nansen Environmental and Remote Sensing Center, Bergen 5006, Norway, Nansen Scientific Society, Bergen 5006, Norway,Nansen--Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,Institute for Atmospheric and Climate Science,Swiss Federal Institute of Technology (ETH), Zurich 8092, Switzerland


doi: 10.1007/s00376-010-0150-9

  • Annual precipitation, evaporation, and calculated accumulation from reanalysis model outputs have been investigated for the Greenland Ice Sheet (GrIS), based on the common period of 1989--2001. The ERA-40 and ERA-interim reanalysis data showed better agreement with observations than do NCEP-1 and NCEP-2 reanalyses. Further, ERA-interim showed the closest spatial distribution of accumulation to the observation. Concerning temporal variations, ERA-interim showed the best correlation with precipitation observations at five synoptic stations, and the best correlation with in itu measurements of accumulation at nine ice core sites. The mean annual precipitation averaged over the whole GrIS from ERA-interim (363 mm yr-1) and mean annual accumulation (319 mm yr-1) are very close to the observations. The validation of accumulation calculated from reanalysis data against ice-core measurements suggests that further improvements to reanalysis models are needed.
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    • Manuscript History

    Manuscript received: 10 September 2011
    Manuscript revised: 10 September 2011
    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

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    Accumulation over the Greenland Ice Sheet as Represented in Reanalysis Data

    • 1. Nansen--Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,Mohn--Sverdrup Center, Nansen Environmental and Remote Sensing Center, Bergen 5006, Norway, Nansen Scientific Society, Bergen 5006, Norway,Mohn--Sverdrup Center, Nansen Environmental and Remote Sensing Center, Bergen 5006, Norway, Nansen Scientific Society, Bergen 5006, Norway,Nansen--Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029,Institute for Atmospheric and Climate Science,Swiss Federal Institute of Technology (ETH), Zurich 8092, Switzerland
    • Manuscript received: 2011-09-10
    • Manuscript revised: 2011-09-10

    Abstract: Annual precipitation, evaporation, and calculated accumulation from reanalysis model outputs have been investigated for the Greenland Ice Sheet (GrIS), based on the common period of 1989--2001. The ERA-40 and ERA-interim reanalysis data showed better agreement with observations than do NCEP-1 and NCEP-2 reanalyses. Further, ERA-interim showed the closest spatial distribution of accumulation to the observation. Concerning temporal variations, ERA-interim showed the best correlation with precipitation observations at five synoptic stations, and the best correlation with in itu measurements of accumulation at nine ice core sites. The mean annual precipitation averaged over the whole GrIS from ERA-interim (363 mm yr-1) and mean annual accumulation (319 mm yr-1) are very close to the observations. The validation of accumulation calculated from reanalysis data against ice-core measurements suggests that further improvements to reanalysis models are needed.

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