Monsoonal oscillation revealed by the upper-troposphere water vapor band brightness temperature |
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Authors: | Weihong Qian Qian Ye Yafen Zhu |
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Institution: | (1) Department of Geophysics, Peking University, 100871 Beijing, China;(2) Institute of Atmospheric Physics, Chinese Academy of Sciences, 100029 Beijing, China |
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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. |
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Keywords: | monsoonal oscillation brightness temperature interannual variability |
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