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DOI	10.1016/j.jhydrol.2020.125451
	Determinants of fog and low stratus occurrence in continental central Europe - a quantitative satellite-based evaluation
	Pauli, Eva; Andersen, Hendrik; Bendix, Joerg; Cermak, Jan; Egli, Sebastian
通讯作者	Pauli, E (corresponding author), Karlsruhe Inst Technol KIT, Inst Meteorol & Climate Res, Karlsruhe, Germany. ; Pauli, E (corresponding author), Karlsruhe Inst Technol KIT, Inst Photogrammetry & Remote Sensing, Karlsruhe, Germany.
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2020
卷号	591
英文摘要	The formation and development of fog and low stratus clouds (FLS) depend on meteorological and land surface conditions and their interactions with each other. While analyses of temporal and spatial patterns of FLS in Europe exist, the interactions between FLS determinants underlying them have not been studied explicitly and quantitatively at a continental scale yet. In this study, a state-of-the-art machine learning technique is applied to model FLS occurrence over continental Europe, using meteorological and land surface parameters from geostationary satellite and re-analysis data. Spatially explicit model units are created to test for spatial and seasonal differences in model performance and FLS sensitivities to changes in predictors, and effects of different data preprocessing procedures are evaluated. The statistical models show good performance in predicting FLS occurrence during validation, with R-2>0.9 especially in winter high pressure situations.The predictive skill of the models seems to be dependent on data availability, data preprocessing, time period, and geographic characteristics. It is shown that atmospheric proxies are more important determinants of FLS presence than surface characteristics, in particular mean sea level pressure, near-surface wind speed and evapotranspiration are crucial, together with FLS occurrence on the previous day. Higher wind speeds, higher land surface temperatures and higher evapotranspiration tend to be negatively related to FLS. Spatial patterns of feature importance show the dominant influence of mean sea level pressure on FLS occurrence throughout the central European domain. When only high pressure situations are considered, wind speed (in the western study region) and evapotranspiration (in the eastern study region) gain importance, highlighting the influence of moisture advection on FLS occurrence in the western parts of the central European domain. This study shows that FLS occurrence can be accurately modeled using machine learning techniques in large spatial domains based on meteorological and land surface predictors. The statistical models used in this study provide a novel analysis tool for investigating empirical relationships in the FLS - land surface system and possibly infer processes.
英文关键词	Fog Low stratus Machine learning Land surface Atmosphere-land surface interactions Europe
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000599757800054
WOS关键词	RADIATION FOG ; MOUNTAINOUS SITE ; NAMIB DESERT ; LIFE-CYCLE ; LOW CLOUDS ; DENSE FOG ; WATER ; FOREST ; AEROSOLS ; CIRCULATION
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349015
作者单位	[Pauli, Eva; Andersen, Hendrik; Cermak, Jan] Karlsruhe Inst Technol KIT, Inst Meteorol & Climate Res, Karlsruhe, Germany; [Pauli, Eva; Andersen, Hendrik; Cermak, Jan] Karlsruhe Inst Technol KIT, Inst Photogrammetry & Remote Sensing, Karlsruhe, Germany; [Bendix, Joerg; Egli, Sebastian] Philipps Univ Marburg, Lab Climatol & Remote Sensing, Marburg, Germany
推荐引用方式 GB/T 7714	Pauli, Eva,Andersen, Hendrik,Bendix, Joerg,et al. Determinants of fog and low stratus occurrence in continental central Europe - a quantitative satellite-based evaluation[J],2020,591.
APA	Pauli, Eva,Andersen, Hendrik,Bendix, Joerg,Cermak, Jan,&Egli, Sebastian.(2020).Determinants of fog and low stratus occurrence in continental central Europe - a quantitative satellite-based evaluation.JOURNAL OF HYDROLOGY,591.
MLA	Pauli, Eva,et al."Determinants of fog and low stratus occurrence in continental central Europe - a quantitative satellite-based evaluation".JOURNAL OF HYDROLOGY 591(2020).