总云量资料所揭示的东亚经度上季风之进退及低频振荡特征
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中国气象局中日季风科研基金


ADVANCE/KETREAT OF MONSOON AT EAST ASIANLONGITUDES AND ITS LFO CHARACTERS DISCOVERED BY SATELLITE TOTAL CLOUD COVER DATA
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    摘要:

    由于总云量带可以指示季风的前缘,因此利用日本气象厅出版的卫星总云量资料研究东亚季风之进退,得到了用常规资料难以获得的重要结果。分析表明,作为季风前缘的低纬和北半球中纬两条总云量带的活动可以用来表示1988年3月~1989年2月东亚经度上全年南北半球冬夏季风之进退。据此,揭示了全年东亚经度上季风进退的年循环过程,特别揭示了南海-西太平洋和印尼-北澳热带季风的进退规律。此外还指出,总云全低频波由中纬向低纬传播,并可越过赤道进入另一半球的中纬地区。在其传播的过程中,在季风区获得加强,在非季风区减弱。

    Abstract:

    The total cloud band is known to be an indicator of the frontal edge of monsoon and hence Japan Meteorological Agency satellite total cloudiness is applied for the advance/retreat of monsoon.Substantial results which would had hardly been derived by conventional data are obtained.The seasonal advance/retreat of the monsoon over East Asian longitudinal scope could be displayed by the activities of two clotid bands,one at low latittides and the other at Northern Hemisphere midlatitudes on a yearly basis from March 1988 to Febrtiary 1989.Accordingly,the anntial cycle of the feature over the study are,particularly those that play the role over the South-China Sea to western Pacific and Indonesia/North Atisralia. Also,the results show that the low-freqtiency wave of the total clotid cover will propagate from mid into low latitudes and farther into midlatittides of the other hemisphere,During the propagation, the wave is intensified(weak-ened)in the monsoon(non-monsoon) region.

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朱乾根,杨松,肖稳安,1994.总云量资料所揭示的东亚经度上季风之进退及低频振荡特征[J].大气科学学报,17(4):405-410. Zhu Qiangen, Yang Song, Xiao Wenan,1994. ADVANCE/KETREAT OF MONSOON AT EAST ASIANLONGITUDES AND ITS LFO CHARACTERS DISCOVERED BY SATELLITE TOTAL CLOUD COVER DATA[J]. Trans Atmos Sci,17(4):405-410.

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  • 收稿日期:1993-10-28
  • 最后修改日期:1993-12-22
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