气候变化领域集成服务门户(CCPortal): Trumpet-Shaped Topography Modulation of the Frequency, Vertical Structures, and Water Path of Cloud Systems in the Summertime Over the Southeastern Tibetan Plateau: A Perspective of Daytime

CCPortal

DOI	10.1029/2019JD031803
	Trumpet-Shaped Topography Modulation of the Frequency, Vertical Structures, and Water Path of Cloud Systems in the Summertime Over the Southeastern Tibetan Plateau: A Perspective of Daytime–Nighttime Differences
	Yu L.; Fu Y.; Yang Y.; Pan X.; Tan R.
发表日期	2020
ISSN	2169897X
卷号	125 期号:3
英文摘要	The warm and humid summer monsoon frequently reaches the steep southern slope of the Himalayas, which is conducive to the formation of unique cloud systems. However, few studies have comprehensively evaluated the characteristics and mechanisms of cloud systems over the trumpet-shaped topography (TST) region in the southeastern Tibetan Plateau. Therefore, we investigated the occurrence frequency, vertical structures, and water path of clouds over the TST regions and their daytime–nighttime differences using the combined measurements of the CloudSat and CALIPSO satellites from 2007 to 2010 during June–August. Results show a marginal difference in occurrence frequency of total clouds between the daytime (95.4%) and nighttime (97%) over the TST region, while different-typed clouds exhibit various daytime–nighttime differences in frequency, vertical structures, and water path. In particular, deep convection, cirrus, altocumulus, and nimbostratus clouds tend to occur more frequently at nighttime, while stratocumulus and cumulus clouds occur more in the daytime. Multilayered clouds form more easily at nighttime, especially triple-layered clouds. The cloud top/bottom heights and liquid/ice water paths of clouds are higher at nighttime than in the daytime over the TST region, which is associated with the increase in deep convection, cirrus, and altocumulus clouds at nighttime. In general, the differences in cloud properties are mainly related to the combined effects of the TST-induced unique mountain-valley circulation, the large-scale monsoonal circulation, and the thermal difference between the day and night. These findings provide valuable observational evidence for the further understanding and accurate simulation of cloud systems over the southeastern Tibetan Plateau region. ©2020. The Authors.
英文关键词	cloud; CloudSat/CALIPSO; Tibetan Plateau; trumpet-shaped topography; vertical structure; water path
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186205
作者单位	School of Earth and Space Sciences, University of Science and Technology of China, Hefei, China; School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing, China; Institute of Environment, Energy and Sustainability, The Chinese University of Hong Kong, Hong Kong; Institute of Atmospheric Environment, CMA, Shenyang, China
推荐引用方式 GB/T 7714	Yu L.,Fu Y.,Yang Y.,等. Trumpet-Shaped Topography Modulation of the Frequency, Vertical Structures, and Water Path of Cloud Systems in the Summertime Over the Southeastern Tibetan Plateau: A Perspective of Daytime–Nighttime Differences[J],2020,125(3).
APA	Yu L.,Fu Y.,Yang Y.,Pan X.,&Tan R..(2020).Trumpet-Shaped Topography Modulation of the Frequency, Vertical Structures, and Water Path of Cloud Systems in the Summertime Over the Southeastern Tibetan Plateau: A Perspective of Daytime–Nighttime Differences.Journal of Geophysical Research: Atmospheres,125(3).
MLA	Yu L.,et al."Trumpet-Shaped Topography Modulation of the Frequency, Vertical Structures, and Water Path of Cloud Systems in the Summertime Over the Southeastern Tibetan Plateau: A Perspective of Daytime–Nighttime Differences".Journal of Geophysical Research: Atmospheres 125.3(2020).