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| 中尺度对流系统中的湿中性层结结构特征 | |
| 引用本文： | 李俊,王东海,王斌.中尺度对流系统中的湿中性层结结构特征[J].气候与环境研究,2012,17(5):617-627. |
| 作者姓名： | 李俊 王东海 王斌 |
| 作者单位： | 1. 中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室,北京 100029;空军气象中心,北京 100843;中国科学院研究生院,北京 100049 2. 中国气象科学研究院灾害天气国家重点实验室,北京,100081 3. 中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室,北京,100029 |
| 基金项目： | 国家创新研究群体科学基金项目40821092,国家自然科学基金项目40633016、40875022,中国气象科学研究院和灾害天气国家重点实验室基本科研业务专项基金 |
| 摘 要： | 基于CloudSat卫星获得的高分辨率中尺度对流系统垂直剖面结构,结合大气参量相对湿度和相当位温的诊断分析,在低纬度、中高纬度地区、陆地或海洋以及不同天气形势下,发现了多个非常典型的中尺度对流系统(MCS)内部具有湿中性层结特征的个例.进一步利用静止卫星普查到的东亚地区MCS分布情况,结合NCEP再分析资料诊断MCS重心位置处大气状态廓线,利用大量的例子从统计的角度揭示了湿中性层结结构特征在MCS中存在的普遍性,并且从动力学和热力学的角度探讨了湿中性层结结构在MCS发生和发展中所起到的作用. |
| 关 键 词： | 中尺度对流系统 CloudSat卫星 湿中性层结 |
| 收稿时间： | 2011/6/11 0:00:00 |
| 修稿时间： | 2012/7/16 0:00:00 |
Structure Characteristics of Moist Neutral Stratification in a Mesoscale Convective System |
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| LI Jun,WANG Donghai and WANG Bin.Structure Characteristics of Moist Neutral Stratification in a Mesoscale Convective System[J].Climatic and Environmental Research,2012,17(5):617-627. | |
| Authors: | LI Jun WANG Donghai and WANG Bin |
| Institution: | State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;Meteorological Center of Air Force, Beijing 100843;Graduate University of Chinese Academy of Sciences, Beijing 100049;State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081;State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029 |
| Abstract: | Many vertical sections of Mesoscale Convective System (MCS) detected by CloudSat satellite in regions of high humidity have a structural trait whereby the equivalent potential temperature is close to uniform in the vertical. This is called the moist neutral stratification, commonly found in East Asia in low or medium-high latitudes, over land or sea. Further information regarding the centroid distribution of MCSs was obtained from geostationary satellite cloud infrared image, and the NCEP reanalysis data was used to diagnose some profiles of atmospheric parameters over the centroid of the MCSs. The statistical results show that a moist neutral stratification structure was common in the MCSs. The role that moist neutral stratification plays in the initiation and development of a MCS is discussed from a kinetic and thermodynamic point of view. |
| Keywords: | mesoscale convective system CloudSat satellite moist neutral stratification |
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