违反了 PRIMARY KEY 约束 'PK_t_counter'。不能在对象 'dbo.t_counter' 中插入重复键。 语句已终止。 CPR探测北半球夏季多层云系结构统计特征分析-Structures of Multi-layer Clouds in Boreal Summer North Hemisphere Based on CloudSat CPR Measurements
doi:  10.3878/j.issn.1006-9585.2017.Q17033
CPR探测北半球夏季多层云系结构统计特征分析

Structures of Multi-layer Clouds in Boreal Summer North Hemisphere Based on CloudSat CPR Measurements
摘要点击 163  全文点击 30  投稿时间:2017-03-03  修订日期:2017-06-05
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基金:  国家自然科学基金(41230419, 91337213, 41675041)、行业专项(GYHY201306077)
中文关键词:  CPR、多层云系、云量、频次、云水路径
英文关键词:  CPR , Multi-layer cloud, Cloud Amount, Cloud frequency, Cloud water path
        
作者中文名作者英文名单位
谭瑞婷Tan Ruiting中国科学技术大学、地球和空间科学学院
冼桃Xian Tao中国科学技术大学、地球和空间科学学院
傅云飞Fu Yunfei中国科学技术大学、地球和空间科学学院
引用:谭瑞婷,冼桃,傅云飞..CPR探测北半球夏季多层云系结构统计特征分析[J].气候与环境研究
Citation:Tan Ruiting,Xian Tao,Fu Yunfei..Structures of Multi-layer Clouds in Boreal Summer North Hemisphere Based on CloudSat CPR Measurements[J].Climatic and Environmental Research(in Chinese)
中文摘要:
      为认知不同层次云系结构及其云参数分布的统计特征,本文利用2007-2010年北半球夏季(6-8月)CPR探测结果对0°~60°N区域单层、双层和三层云系的水平分布、垂直结构特征及各云层云类组成、云水路径等物理量分布进行分析。云量的统计结果表明单层、双层和三层云系的云量分别为36.63%、8.26%和1.40%,云量的水平分布表明其高值区主要位于对流旺盛区域,且高值区的云层云顶高、厚度大,而低值区则位于副热带高压区域。对不同云类的出现频率统计分析结果表明,单层云系中各云类的出现频率相近;多层云系的上层以卷云为主,下层以层积云为主。对比海陆差异发现洋面卷云和层积云的出现频率显著高于陆面,但高层云和高积云的出现频率低于陆面。云水路径分析表明,单层云系的冰水路径和液水路径均最大,而在多层云系中云层越高厚度越大冰水路径越大,液水路径则随着云层的降低增大。
Abstract:
      Characteristics of single-layer and multi-layer clouds including cloud amount, vertical structure of cloud, configuration of cloud type, and cloud water path in the North Hemisphere (0°~60°N) in boreal summer (June-July-August) are investigated based on measurements of the Cloud Profile Radar during 2007 - 2010. The results indicate that the cloud amounts for single-, double- and triple-layer are 36.63%, 8.26%, and 1.40%, respectively. The high value areas of cloud amounts are consist with the convective regions with higher cloud top and thicker clouds, while the low value areas mainly located over the subtropical high zone. The occurrence frequency of cloud types shows that frequencies for cirrus, medium cloud and low cloud in single-layer cloud are similar, the upper layers of multi-layer cloud mainly consist of cirrus, while the lower layers cloud mainly consist of stratocumulus. Comparing frequencies of cloud types over ocean and land, we found that cirrus and stratocumulus occur more frequently over ocean than over land, while medium clouds (altostratus and altocumulus) are emerging more frequently over land. The analyses also show that the values of cloud water path (ice water path and liquid water path) of single-layer clouds are the highest. In the multi-layer cloud, the higher layers with the higher value of ice water path and lower value of liquid water path.
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