气候变化领域集成服务门户(CCPortal): Sensitivity of Blocks and Cyclones in ERA5 to Spatial Resolution and Definition Sensitivity of blocks and cyclones in ERA5 to spatial resolution and definition

CCPortal

DOI	10.1029/2019GL085582
	Sensitivity of Blocks and Cyclones in ERA5 to Spatial Resolution and Definition Sensitivity of blocks and cyclones in ERA5 to spatial resolution and definition
	Rohrer M.; Martius O.; Raible C.C.; Brönnimann S.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:7
英文摘要	ERA5, the fifth-generation reanalysis of the European Center for Medium-Range Weather Forecasts, provides long time series of atmospheric fields at high spatial and temporal resolution. It allows detailed studies of atmospheric flow features such as blocks or cyclones. We investigate characteristics of blocks and cyclones in ERA5 using different algorithms, compare the results to ERA5's predecessor, ERA-interim, and investigate how these characteristics depend on spatial resolution. Generally, ERA5 and ERA-interim characterize blocks and cyclones similarly. For Lagrangian detection and tracking methods, blocks are more robust than cyclones to changes in resolution and reanalysis choice. Eulerian methods are robust to changes in resolution. Thus, ERA5 provides a state-of-the-art reanalysis for the synoptic-scale extratropical circulation. We find that Lagrangian cyclone characteristics are strongly dependent on spatial resolution and therefore recommend that model and reanalysis data should be mapped to a common resolution for verification. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric movements; Image resolution; Lagrange multipliers; Weather forecasting; Atmospheric fields; Atmospheric flows; Detection and tracking; European center for medium-range weather forecasts; Extratropical circulation; Long time series; Spatial and temporal resolutions; Spatial resolution; Storms
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170512
作者单位	Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland; Institute of Geography, University of Bern, Bern, Switzerland; Now at Axis Capital, Zurich, Switzerland; Mobiliar Lab for Natural Risks, University of Bern, Bern, Switzerland; Climate and Environmental Physics, Physics Institute, University of Bern, Bern, Switzerland
推荐引用方式 GB/T 7714	Rohrer M.,Martius O.,Raible C.C.,et al. Sensitivity of Blocks and Cyclones in ERA5 to Spatial Resolution and Definition Sensitivity of blocks and cyclones in ERA5 to spatial resolution and definition[J],2020,47(7).
APA	Rohrer M.,Martius O.,Raible C.C.,&Brönnimann S..(2020).Sensitivity of Blocks and Cyclones in ERA5 to Spatial Resolution and Definition Sensitivity of blocks and cyclones in ERA5 to spatial resolution and definition.Geophysical Research Letters,47(7).
MLA	Rohrer M.,et al."Sensitivity of Blocks and Cyclones in ERA5 to Spatial Resolution and Definition Sensitivity of blocks and cyclones in ERA5 to spatial resolution and definition".Geophysical Research Letters 47.7(2020).