热带对流性降水的逆温特征-海洋预报

热带对流性降水的逆温特征

单位：1. 中国卫星海上测控部, 江苏江阴 214431;
2. 青岛市城阳区气象局, 山东青岛 266100

分类号：P732.3

出版年·卷·期（页码）：2016·33·第一期（45-52）

摘要：

通过对赤道辐合带降水的观测发现,热带对流性降水过程普遍存在逆温现象,为更好的解释这一现象,利用微波辐射计数据,对降水过程的大气层结进行了深入分析。结果表明:(1)强对流降水过程中普遍存在两个"暖心",暖心之间有"冷泡";(2)典型逆温过程发生在对流系统边缘,对流云云顶高度均在10 km以上;(3)逆温现象出现时存在水汽密度和液态水含量大值区。近地面"暖心"下方和第二"暖心"内部水汽密度和液态水含量较小,两个"暖心"之间存在大值中心。第二"暖心"之上水汽密度较小,液态水含量较大。

The analyses of the precipitation data obtained from the ITCZ (Intertropical Convergence Zone) revealed that inversion layers occur during the tropical convective precipitation. In order to explain this phenomenon, the atmospheric stratification under the process of rainfall was analyzed in deep based on the MP-3000A microwave radiometer data. The results indicate as follows: (1) Two warm cores exist in the process of strong convective precipitation, and with cold cores between them. (2)Typical inversion process locates at the edge of convection system, and the cloud top height of convection cloud is more than 10 km. (3) Vapor density and liquid water reach a large value zone between the two warm cores under the temperature inversion layer. The value of vapor density and liquid water content is lower below the first warm core and in the second warm core. Above the second warm core vapor density shows lower value while the liquid water is higher.

参考文献：

[1] 夏茹娣, 赵思雄. 2005 年6 月广东锋前暖区暴雨β中尺度系统特征的诊断与模拟研究[J]. 大气科学, 2009, 33(3): 468-488.
[2] 陈敏, 郑永光, 王洪庆, 等. 一次强降水过程的中尺度对流系统模拟研究[J]. 气象学报, 2005, 63(3): 313-324.
[3] 王建捷, 李泽椿. 1998 年一次梅雨锋暴雨中尺度对流系统的模拟与诊断分析[J]. 气象学报, 2002, 60(2): 146-155.
[4] 慕建利, 李泽椿, 谌云, 等. 一次陕西关中强暴雨中尺度系统特征分析[J]. 高原气象, 2014, 33(1): 148-161.
[5] 周嵬, 吴宏议, 田海军. 基于微波辐射计资料浅析对流降水云内与环境温差[J]. 干旱气象, 2011, 29(1): 10-16.
[6] 宫宇, 罗亚丽. 梅雨锋前线状中尺度对流系统成熟阶段的空气垂直运动分析[J]. 热带气象学报, 2014, 30(4): 687-699.
[7] 赵绪孔, 刘玉栋. 太平洋热带海区海洋气象特征[J]. 大气科学, 1988, 12(4): 439-443.
[8] 李若钝, 武建平, 孙瑞本. 热带西太平洋秋季低空大气温度层结的基本特征[J]. 大气科学, 1991, 15(1): 61-68.
[9] 李若钝, 武建平, 孙瑞本. 热带西太平洋低层大气的多逆温层特征[J]. 热带海洋, 1991, 10(3): 58-64.
[10] 李若钝, 孙瑞本, 武建平. 热带西太平洋边界层大气的多逆温层特征[J]. 热带气象, 1991, 7(4): 355-364.
[11] 李若钝, 孙瑞本, 刘丽惠. 热带西太平洋低层大气的多逆温层现象[J]. 海洋通报, 1993, 12(1): 25-29.
[12] Carbone R E, Wilson J W, Keenan T D, et al. Tropical island convection in the absence of significant topography. Part Ⅰ: life cycle of diurnally forced convection[J]. Monthly Weather Review, 2000, 128(10): 3459-3480.
[13] Keenan T D, Ferrier B, Simpson J. Development and structure of a maritime continent thunderstorm[J]. Meteorology and Atmospheric Physics, 1994, 53(3-4): 185-222.
[14] Tao W K, Shie C L, Simpson J, et al. Convective systems over the South China Sea: cloud-resolving model simulations[J]. Journal of the Atmospheric Sciences, 2003, 60(24): 2929-2955.
[15] Wang J J, Li X F, Carey L D. Evolution, structure, cloud microphysical, and surface rainfall processes of monsoon convection during the South China Sea Monsoon experiment[J]. Journal of the Atmospheric Sciences, 2007, 64(2): 360-380.
[16] 杨国祥. 中小尺度天气学[M]. 北京: 气象出版社, 1983.

服务与反馈：

【文章下载】【发表评论】【查看评论】【加入收藏】