積云參數(shù)化方案對夏季東亞季風(fēng)區(qū)海氣系統(tǒng)位相關(guān)系模擬的影響

doi:10.3969/2015jms.0041

首頁 > 過刊瀏覽>2016年第36卷第3期 >329-339. DOI:10.3969/2015jms.0041

積云參數(shù)化方案對夏季東亞季風(fēng)區(qū)海氣系統(tǒng)位相關(guān)系模擬的影響
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                        10.3969/2015jms.0041
                    
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基金項(xiàng)目:國家自然科學(xué)基金資助項(xiàng)目（41205075）；江蘇省自然科學(xué)基金資助項(xiàng)目（BK2012062）

Influences of cumulus parameterization scheme on the simulation of the air-sea system phase relation in East Asian summer monsoon region

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本文利用區(qū)域海氣耦合模式RegCM-POM，分別選取Grell積云參數(shù)化方案和Emanuel積云參數(shù)化方案對北半球夏季（5-10月）的東亞氣候進(jìn)行模擬，研究不同積云對流參數(shù)化方案（CPS）對東亞夏季季風(fēng)區(qū)海氣系統(tǒng)位相關(guān)系模擬的影響。結(jié)果表明：不同CPS模擬的陸地降水具有一定的不確定性，而海洋降水和海溫的模擬受CPS選擇的影響更大。其中，Emanuel方案對海洋降水和海溫的分布形勢模擬總體上要好于Grell方案，且可以更好的模擬中國近海各海區(qū)的海氣系統(tǒng)位相關(guān)系，特別是大氣對海溫的負(fù)反饋過程。原因在于Emanuel方案模擬的對流降水與海溫的位相關(guān)系更接近觀測總降水與海溫的位相關(guān)系；而Grell方案對南海和孟加拉灣的對流降水模擬偏少，對黑潮對流降水的模擬偏多，錯(cuò)誤地模擬了這幾個(gè)海區(qū)積云對流過程發(fā)揮的作用，故其模擬的海氣系統(tǒng)位相關(guān)系不如Emanuel方案。

Abstract:

By using the regional air-sea coupled model RegCM-POMis, Grell cumulus parameterization scheme and Emanuel cumulus parameterization scheme are selected to simulate the summer climate of northern hemisphere (May- October) in East Asia, and the impacts of different Cumulus Convection Parameterization Scheme(CPSs) on the simulation of the atmosphere-ocean system phase relation in East Asian summer monsoon region were also studied. Results show that the simulated precipitation over land by different CPSs reveals some uncertainties. The CPS has more influences on the simulated precipitation over ocean and sea surface temperature(SST). The Emanuel scheme is better in simulating the distribution of ocean precipitation and SST and in simulating the air-sea system phase relation over the marginal sea of China than the Grell scheme in general, especially the negative feedback of atmosphere to SST, which can be explained that the phase relation of convective precipitation and SST simulated by the Emanuel scheme is more consistent with that of total precipitation and SST in observation. However, the simulated convective precipitation by Grell scheme is less than that by the Emanuel scheme in South China Sea and the Bay of Bengal, and it is more than that by the Emanuel scheme in Kuroshio region. The role of cumulus convection process is not represented reasonably by the Grell scheme. Therefore, the simulated air-sea system phase relation of Grell scheme is inferior to that of the Emanuel scheme.

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李荔珊,胡軼佳,鐘中,朱益民.積云參數(shù)化方案對夏季東亞季風(fēng)區(qū)海氣系統(tǒng)位相關(guān)系模擬的影響.氣象科學(xué),2016,36(3):329-339 LI Lishan, HU Yijia, ZHONG Zhong, ZHU Yimin. Influences of cumulus parameterization scheme on the simulation of the air-sea system phase relation in East Asian summer monsoon region. Journal of the Meteorological Sciences,2016,36(3):329-339

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收稿日期:2015-01-25
最后修改日期:2015-05-16
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在線發(fā)布日期: 2016-07-14
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