GSTDTAP  > 地球科学
DOI10.1016/j.atmosres.2021.105468
Cloud top height retrieval over Arctic Ocean using cloud-shadow method based on MODIS
Xueying Cheng, Li Yi, Jörg Bendix
2021-01-11
发表期刊Atmospheric Research
出版年2021
英文摘要

Cloud top height (CTH) plays an important role in the Earth's radiation budget and thus in climate change. However, accurate CTH retrieval based on satellite data remains a challenge when using currently widespread methods based on passive remote sensing satellite data, particularly over the Arctic Ocean. It is well known that using geometric correlation between CTH and cloud-shadow distance along the normal direction of sunlight, cloud-edge top height (CETH) can be determined. However, this cloud-shadow method (CSM) exhibited larger CTH errors due to low-resolution weather satellite data of the past. The aim of the paper is to analyze the effect of higher-resolution image (MODIS with 250-m resolution) on CSM accuracy. We present a method in which CETH is first retrieved using the MODIS data, and to calculate CTH in the center of cloud region by combining the calculated CETH and cloud top brightness temperature using an environmental temperature lapse rate method. We validated 14 cases over the Arctic Ocean by the CALIPSO (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations) CTH lidar product and another two cases by radiosonde data. CSM revealed better performance (mean difference is 0.45 km and standard deviation is 0.92 km) compared to the operational MODIS CTH product (mean difference is −0.78 km and standard deviation is 1.78 km), when validated by the CALIPSO product. When validated by sounding data, CSM also performed better than the MODIS CTH product: the CSM CTH errors are 0.41 and 0.52 km in two sounding cases, while the corresponding MODIS CTH errors are −1.10 and 1.07 km. The CSM technique especially showed better performance for double-deck cloud systems. We conclude that further improvements in CTH accuracy based on CSM can be achieved by mainly using higher-resolution satellite imagery.

领域地球科学
URL查看原文
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/311278
专题地球科学
推荐引用方式
GB/T 7714
Xueying Cheng, Li Yi, Jörg Bendix. Cloud top height retrieval over Arctic Ocean using cloud-shadow method based on MODIS[J]. Atmospheric Research,2021.
APA Xueying Cheng, Li Yi, Jörg Bendix.(2021).Cloud top height retrieval over Arctic Ocean using cloud-shadow method based on MODIS.Atmospheric Research.
MLA Xueying Cheng, Li Yi, Jörg Bendix."Cloud top height retrieval over Arctic Ocean using cloud-shadow method based on MODIS".Atmospheric Research (2021).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Xueying Cheng, Li Yi, Jörg Bendix]的文章
百度学术
百度学术中相似的文章
[Xueying Cheng, Li Yi, Jörg Bendix]的文章
必应学术
必应学术中相似的文章
[Xueying Cheng, Li Yi, Jörg Bendix]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。