气候变化领域集成服务门户(CCPortal): North atlantic winter storm activity in modern reanalyses and pressure-based observations

CCPortal

DOI	10.1175/JCLI-D-20-0529.1
	North atlantic winter storm activity in modern reanalyses and pressure-based observations
	Feser F.; Krueger O.; Woth K.; Van Garderen L.
发表日期	2021
ISSN	08948755
起始页码	2411
结束页码	2428
卷号	34 期号:7
英文摘要	This study analyzes changes in extratropical windstorms over the North Atlantic during the last decades. We assessed and compared North Atlantic winter storm activity in a comprehensive approach from three different data sources: modern reanalysis datasets, a dynamically downscaled high-resolution global atmospheric climate simulation, and observations. The multidecadal observations comprise both a storm index derived from geostrophic wind speed triangles and an observational record of low pressure systems counted from weather analyses. Both observational datasets have been compared neither to the most recent reanalyses nor to the downscaled global climate simulation with respect to North Atlantic winter storms before. The similarity of the geostrophic wind speed storm index to reanalyzed high wind speed percentiles and storm numbers confirms its suitability to describe storm frequencies and intensities for multidecadal time scales. The results show that high wind speeds, storm numbers, and spatial storm track distributions are generally alike in high-resolution reanalyses and downscaled datasets and they reveal an increasing similarity to observations over time. Strong decadal and multidecadal variability emerged in high wind speed percentiles and storm frequency, but no long-term changes for the last decades were detected. © 2021 American Meteorological Society.
英文关键词	Atmosphere; Extratropical cyclones; North atlantic ocean; Reanalysis data; Storm tracks
语种	英语
scopus关键词	Oceanography; Speed; Wind; Atmospheric climate; Geostrophic winds; Global climate simulations; Long term change; Low pressure systems; Multi-decadal time scale; Multidecadal variability; Weather analysis; Storms; atmospheric dynamics; downscaling; extratropical cyclone; geostrophic flow; low pressure system; storm; storm track; timescale; wind field; wind velocity; winter; Atlantic Ocean; Atlantic Ocean (North)
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178668
作者单位	Institute of Coastal Systems, Helmholtz-Zentrum Geesthacht, Geesthacht, Germany
推荐引用方式 GB/T 7714	Feser F.,Krueger O.,Woth K.,et al. North atlantic winter storm activity in modern reanalyses and pressure-based observations[J],2021,34(7).
APA	Feser F.,Krueger O.,Woth K.,&Van Garderen L..(2021).North atlantic winter storm activity in modern reanalyses and pressure-based observations.Journal of Climate,34(7).
MLA	Feser F.,et al."North atlantic winter storm activity in modern reanalyses and pressure-based observations".Journal of Climate 34.7(2021).