气候变化领域集成服务门户(CCPortal): Spatiotemporal dynamics of fog and low clouds in the Namib unveiled with ground- A nd space-based observations

CCPortal

DOI	10.5194/acp-19-4383-2019
	Spatiotemporal dynamics of fog and low clouds in the Namib unveiled with ground- A nd space-based observations
	Andersen H.; Cermak J.; Solodovnik I.; Lelli L.; Vogt R.
发表日期	2019
ISSN	16807316
起始页码	4383
结束页码	4392
卷号	19 期号:7
英文摘要	Fog is an essential component of Namib-region ecosystems. Current knowledge on Namib-region fog patterns and processes is limited by a lack of coherent observations in space and time. In this study, data from multiple satellite platforms and station measurements paint a coherent picture of the spatiotemporal dynamics of fog and low cloud (FLC) distribution. It is found that observed seasonal FLC patterns derived from satellite observations differ from fog measurements at coastal station locations, whereas they agree further inland. This is linked to an observed seasonal cycle in the vertical structure of FLCs that determines the probability of low-level clouds touching the ground. For the first time, these observations are complemented by spatially coherent statistics concerning the diurnal cycle of FLCs using geostationary satellite data. The average timing of the start of the diurnal FLC cycle is found to strongly depend on the distance to the coastline (correlation ≈ 0:85 north of 25° S), a clear indication of dominant advective processes. In the central Namib, FLCs typically occur 2-4 h later than in other coastal regions, possibly due to local advection patterns. The findings lead to a new conceptual model of the spatiotemporal dynamics of fog and low clouds in the Namib. © 2019 Author(s).
语种	英语
scopus关键词	coastal zone; diurnal variation; fog; ground-based measurement; particulate matter; seasonal variation; spatiotemporal analysis; Namib Desert; Namibia
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144516
作者单位	Karlsruhe Institute of Technology (KIT), Institute of Meteorology and Climate Research, Karlsruhe, Germany; Karlsruhe Institute of Technology (KIT), Institute of Photogrammetry and Remote Sensing, Karlsruhe, Germany; University of Bremen, Institute of Environmental Physics and Remote Sensing, Bremen, Germany; University of Basel, Department of Environmental Sciences, Basel, Switzerland
推荐引用方式 GB/T 7714	Andersen H.,Cermak J.,Solodovnik I.,et al. Spatiotemporal dynamics of fog and low clouds in the Namib unveiled with ground- A nd space-based observations[J],2019,19(7).
APA	Andersen H.,Cermak J.,Solodovnik I.,Lelli L.,&Vogt R..(2019).Spatiotemporal dynamics of fog and low clouds in the Namib unveiled with ground- A nd space-based observations.Atmospheric Chemistry and Physics,19(7).
MLA	Andersen H.,et al."Spatiotemporal dynamics of fog and low clouds in the Namib unveiled with ground- A nd space-based observations".Atmospheric Chemistry and Physics 19.7(2019).