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Chinese Science Bulletin

, Volume 43, Issue 17, pp 1489–1494 | Cite as

Monsoonal oscillation revealed by the upper-troposphere water vapor band brightness temperature

  • Weihong Qian
  • Qian Ye
  • Yafen Zhu
Bulletin

Abstract

The measurements of brightness temperature (BT) from the upper-troposphere water vapor channel 12 of the National Oceanic and Atmospheric Administration polar satellites from 1979 through 1995 are used to analyze the interannual variations of the global monsoon strength. Results show that in the interannual time-sclae the BT variability in the equatorial eastern Pacific (EEP) is out of phase with the BT variabilities in other four regions, i. e. South Asia, tropical south American, two subtropical areas in the South and North Pacific. The BT interannual variation mode may be called monsoonal oscillation (MO). The MO is the result of the atmospheric circulation anomaly in the troposphere.

Keywords

monsoonal oscillation brightness temperature interannual variability 

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Copyright information

© Science in China Press 1998

Authors and Affiliations

  • Weihong Qian
    • 1
  • Qian Ye
    • 2
  • Yafen Zhu
    • 1
  1. 1.Department of GeophysicsPeking UniversityBeijingChina
  2. 2.Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina

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