JOURNAL OF NATURAL RESOURCES ›› 2014, Vol. 29 ›› Issue (6): 979-989.doi: 10.11849/zrzyxb.2014.06.007

• Resources Evaluation • Previous Articles     Next Articles

Characteristics of Summer Atmospheric Water Resources and Its Causes over the Tibetan Plateau in Recent 30 Years

XIE Cheng-ying1,2, LI Min-jiao3, ZHANG Xue-qin1   

  1. 1. Institute of Geographic Sciences and Natural Resources, CAS, Beijing 100101, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Tianjin Academy of Environmental Sciences, Tianjin 300191, China
  • Received:2013-05-07 Revised:2013-10-07 Published:2014-06-24

Abstract:

Considering the effects of unique landscape of the Tibetan Plateau (TP), South Asian monsoon and mid-latitudes westerlies, the spatiotemporal variation of the summer atmospheric water resources and its main causes over the TP are analyzed from the aspects of the precipitable water content, the water vapor transport and budget with the adoption of NCEP/NCAR monthly reanalysis data from 1979 to 2010. The results show that the 32-year regional mean water vapor net budgets were convergences for the whole TP but the northwestern part. The precipitable water vapor and water vapor budget over the south-central, southeastern and northwestern TP exhibited increasing trends, while the northeastern TP decreased during the period of 1979-2010. Despite of the rising of precipitable water vapor, the water vapor net income declined over the north-central TP. The mid-latitude westerlies and South Asian monsoon dominated the variability of atmospheric water resources over the TP, and the interdecadal descending characteristics of the zonal index and the South Asian monsoon index implied the weakening of the zonal moisture transport over the east-central TP and meridional transport over the south of 30°N in the TP and its surrondings, respectively. Moreover, the difference of the water vapor budget among the five partitions was exacerbated by the unique landform distribution of the TP.

Key words: water vapor transport and budget, atmospheric water resources, Tibetan Plateau (TP), precipitable water content

CLC Number: 

  • P434+.5