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Advances in Atmospheric Sciences

, 28:1030 | Cite as

Accumulation over the Greenland Ice Sheet as represented in reanalysis data

  • Linling Chen (陈琳玲)Email author
  • Ola M. Johannessen
  • Huijun Wang (王会军)
  • Atsumu Ohmura
Article

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 situ 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.

Key words

Greenland Ice Sheet reanalysis data precipitation accumulation 

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Copyright information

© Chinese National Committee for International Association of Meteorology and Atmospheric Sciences, Institute of Atmospheric Physics, Science Press and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Linling Chen (陈琳玲)
    • 1
    • 2
    • 3
    Email author
  • Ola M. Johannessen
    • 2
    • 3
  • Huijun Wang (王会军)
    • 1
  • Atsumu Ohmura
    • 4
  1. 1.Nansen-Zhu International Research Centre, Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina
  2. 2.Mohn-Sverdrup CenterNansen Environmental and Remote Sensing CenterBergenNorway
  3. 3.Nansen Scientific SocietyBergenNorway
  4. 4.Institute for Atmospheric and Climate ScienceSwiss Federal Institute of Technology (ETH)ZürichSwitzerland

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