气候变化领域集成服务门户(CCPortal): An inter-comparison of Arctic synoptic scale storms between four global reanalysis datasets

CCPortal

DOI	10.1007/s00382-020-05142-4
	An inter-comparison of Arctic synoptic scale storms between four global reanalysis datasets
	Vessey A.F.; Hodges K.I.; Shaffrey L.C.; Day J.J.
发表日期	2020
ISSN	0930-7575
起始页码	2777
结束页码	2795
卷号	54
英文摘要	The Arctic is becoming more accessible as sea ice extent continues to decline, resulting in higher human exposure to Arctic storms. This study compares Arctic storm characteristics between the ECMWF-Interim Reanalysis, 55-year Japanese Reanalysis, NASA-Modern Era Retrospective Analysis for Research and Applications Version 2 and National Centre for Environmental Prediction-Climate Forecast System Reanalysis datasets between 1980 and 2017, in winter (DJF) and summer (JJA). It is shown that Arctic storm characteristics are sensitive to the variable used for storm tracking. Arctic storm frequency is found to be similar in summer and winter when using sea level pressure minima to track Arctic storms, whereas, the storm frequency is found to be higher in winter than summer when using 850 hPa relative vorticity to track storms, based on using the same storm tracking algorithm. It is also found that there are no significant trends in Arctic storm characteristics between 1980 and 2017. Given the sparsity of observations in the Arctic, it might be expected that there are large differences in Arctic storm characteristics between the reanalysis datasets. Though, some similar Arctic storm characteristics are found between the reanalysis datasets, it is found that the differences in Arctic storm characteristics between the reanalysis datasets are generally higher in winter than in summer. Overall, the results show that there are differences in Arctic storm characteristics between reanalysis datasets, but even larger differences can arise between using 850 hPa relative vorticity or mean sea level pressure as the storm tracking variable, which adds to the uncertainty associated with current Arctic storm characteristics. © 2020, The Author(s).
英文关键词	Arctic storms; Reanalysis datasets
语种	英语
scopus关键词	air-sea interaction; data set; ensemble forecasting; frequency analysis; numerical model; salinity; sea level change; sea level pressure; sensitivity analysis; storm track; summer; synoptic meteorology; winter; Arctic Ocean
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145554
作者单位	Department of Meteorology, University of Reading, Earley Gate, Reading, RG6 6BB, United Kingdom; ECMWF, Shinfield Park, Reading, RG2 9AX, United Kingdom; National Centre for Atmospheric Science, University of Reading, Earley Gate, Reading, RG6 6BB, United Kingdom
推荐引用方式 GB/T 7714	Vessey A.F.,Hodges K.I.,Shaffrey L.C.,et al. An inter-comparison of Arctic synoptic scale storms between four global reanalysis datasets[J],2020,54.
APA	Vessey A.F.,Hodges K.I.,Shaffrey L.C.,&Day J.J..(2020).An inter-comparison of Arctic synoptic scale storms between four global reanalysis datasets.Climate Dynamics,54.
MLA	Vessey A.F.,et al."An inter-comparison of Arctic synoptic scale storms between four global reanalysis datasets".Climate Dynamics 54(2020).