夏季南海-菲律宾上空低频热源对东亚环流影响的数值试验
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国家自然科学基金


NUMERICAL STUDY ON INFLUENCE OF SOUTH CHINA SEA/PHILIPPINES SUMMER OW FKEQUENCY HEATING SOURCES UP ON EAST ASIANA TMOSPHERIC CIRCULATION
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    摘要:

    采用钱永甫p-σ五层坐标原始方程模式,研究南海-菲律宾地区上空的低频热源对不亚大气环流的影响。结果表明,当低频热源处于加热位相时,对流层上层澳大利亚上空西风加强,对流层低层120°E处越赤道气流增强,副高位置偏北,此时低层,东南风影响我国东部沿海地区的降水;冷却位相时,对流层上层澳大利亚上空西风减弱,对流层低层越赤道气流减弱,副高位置偏南,此时低层西南风造成我国东部沿海的降水。

    Abstract:

    Using Kuo-Qian p-σ incorporated coordinate five layer primitive equation medel,investigation is undertaken of the influence of low-frequency convective heating sources over the Sotith-China Sea to Philippines on East Asian atmospheric circtilation. Results show that with the low frequency sources at heating(cooling)phase the west wind becomes strengthened(weakened)in the Atistralian upper troposphere and so does the 120°E cross equatorial flow in the lower troposphere,with the subtropical high positioned slightly northward(southward)of its mean,a situation that allows the low-level SE(SW)wind to exert effects on rainfall over the scaboard of eastern China.

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姚永红,何金海,徐海明,1994.夏季南海-菲律宾上空低频热源对东亚环流影响的数值试验[J].大气科学学报,17(4):411-417. Yao Yonghong, He Jinhai, Xu Haiming,1994. NUMERICAL STUDY ON INFLUENCE OF SOUTH CHINA SEA/PHILIPPINES SUMMER OW FKEQUENCY HEATING SOURCES UP ON EAST ASIANA TMOSPHERIC CIRCULATION[J]. Trans Atmos Sci,17(4):411-417.

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  • 收稿日期:1993-07-14
  • 最后修改日期:1993-10-13
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