CALIPSO星载激光在全球海洋上空的穿透性统计

大气与环境光学学报 ›› 2011, Vol. 6 ›› Issue (4): 252-259.

CALIPSO星载激光在全球海洋上空的穿透性统计

吴东，贾佳

（中国海洋大学信息科学与工程学院海洋技术系，山东青岛 266100）

出版日期:2011-07-28 发布日期:2011-07-18
通讯作者: 吴东(1964-)，男，山东青岛人，教授，博士学位，研究方向：海洋光学与激光探测。 E-mail:dongwu@ouc.edu.cn
作者简介:吴东(1964-)，男，山东青岛人，教授，博士学位，研究方向海洋光学与激光探测。
基金资助:
国家自然科学基金项目（40876017、41076116）资助

Global Penetrability Statistics of CALIPSO Over Ocean Laser Samples

WU Dong, JIA Jia

(Department of Marine technology, College of Information Science & Engineering, Ocean University of China, Qingdao 266100, China)

Published:2011-07-28 Online:2011-07-18

摘要/Abstract

摘要：

利用CALIPSO卫星2006年6月至2010年5月4年的5 km二级云产品数据对CALIPSO星载激光在全球海洋上空的穿透性进行统计分析，分别讨论了穿透概率随年度变化、季节变化、昼夜变化及地理位置的变动情况，同时分析了产品版本因素对分析结果造成的影响。分析表明，海洋上空的数据中探测到云层的约占72.2%，其中不透明云层约占有云数据的61.4%，即可穿透云层获得海面信息的数据约占有云数据的38.6%，加上未探测到云层的激光，总共约有占总数据量55.6%左右的激光数据可以用来探测海面信息。使用不同的版本数据分析穿透率结果约有9%的变化。

关键词: 星载激光雷达, CALIPSO, 穿透概率, 云产品

Abstract:

Global penetrability statistics of CALIPSO over ocean laser samples are derived from the CALIPSO level 2 5-km lidar cloud layer products between June, 2006 and May, 2010. The effects of the changes of year, season, day/night and geographic location are discussed so as the effect of the different product versions. The results show that cloud layers are detected in about 72.2% of the total over ocean lidar profiles, and 61.4% of the cloudy samples have opaque cloud layer. That means 38.6% of the cloudy samples can get the sea surface information, and together with the cloudless laser samples, about 55.6% of the total lidar samples can be used to detect the information of the sea surface. The different product versions can cause about 9% change in the results.

Key words: spaceborne lidar, CALIPSO, opacity cloud frequency, cloud layer product

中图分类号:

TN959.4

吴东贾佳. CALIPSO星载激光在全球海洋上空的穿透性统计[J]. 大气与环境光学学报, 2011, 6(4): 252-259.

WU Dong, JIA Jia. Global Penetrability Statistics of CALIPSO Over Ocean Laser Samples[J]. Journal of Atmospheric and Environmental Optics, 2011, 6(4): 252-259.

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