Advances in Atmospheric Sciences

, Volume 27, Issue 2, pp 303–314

Comparisons of soil moisture datasets over the Tibetan Plateau and application to the simulation of Asia summer monsoon onset

  • Qing Bao (包 庆)
  • Yimin Liu (刘屹岷)
  • Jiancheng Shi (施建成)
  • Guoxiong Wu (武国雄)
Article

DOI: 10.1007/s00376-009-8132-5

Cite this article as:
Bao, Q., Liu, Y., Shi, J. et al. Adv. Atmos. Sci. (2010) 27: 303. doi:10.1007/s00376-009-8132-5

Abstract

The influence of soil moisture on Asian monsoon simulation/prediction was less studied, partly due to a lack of available and reliable soil moisture datasets. In this study, we firstly compare several soil moisture datasets over the Tibetan Plateau, and find that the remote sensing products from the Advanced Microwave Scanning Radiometer for Earth Observing System (AMSR-E) can capture realistic temporal variations of soil moisture better than the two reanalyses (NCEP and ECMWF) during the pre-monsoon seasons. Using the AMSR-E soil moisture product, we investigate the impacts of soil moisture over the Tibetan Plateau on Asian summer monsoon onset based on a Spectral Atmospheric Model developed at IAP/LASG (SAMIL). Comparison between results with and without the assimilation of remotely sensed soil moisture data demonstrates that with soil moisture assimilated into SAMIL, the land-sea thermal contrast during pre-monsoon seasons is more realistic. Accordingly, the simulation of summer monsoon onset dates over both the Bay of Bengal and South China Sea regions are more accurate with AMSR-E soil moisture assimilated. This study reveals that the application of the soil moisture remote sensing products in a numerical model could potentially improve prediction of the Asian summer monsoon onset.

Key words

soil moisture remote sensing AMSR-E and ASM onset 

Copyright information

© Chinese National Committee for International Association of Meteorology and Atmospheric Sciences, Institute of Atmospheric Physics, Science Press and Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Qing Bao (包 庆)
    • 1
  • Yimin Liu (刘屹岷)
    • 1
  • Jiancheng Shi (施建成)
    • 2
  • Guoxiong Wu (武国雄)
    • 1
  1. 1.State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina
  2. 2.Institute for Computational Earth System ScienceUniversity of CaliforniaSanta BarbaraUSA