气候变化领域集成服务门户(CCPortal): Impact of Satellite Observations on Forecasting Sudden Stratospheric Warmings

CCPortal

DOI	10.1029/2019GL086233
	Impact of Satellite Observations on Forecasting Sudden Stratospheric Warmings
	Noguchi S.; Kuroda Y.; Mukougawa H.; Mizuta R.; Kobayashi C.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:5
英文摘要	The observational impacts of satellite data assimilation on extended-range forecasts of sudden stratospheric warmings (SSWs) are investigated by conducting ensemble forecast experiments. We use two Japanese novel reanalysis products: the Japanese 55-year reanalysis (JRA-55) and its subset that assimilates conventional observations only (JRA-55C). A comparative examination on the reproducibility for SSWs between the two ensemble forecasts reveals that the impact of satellite observations is significant for forecasts starting 5 days before the SSW onset, with 20% less accuracy in the JRA-55C forecasts. Moreover, some of forecasts of vortex-splitting SSWs show a sudden appearance of deep difference, which lasts over a few months in the lower stratosphere and significantly affects the surface climate. These results highlight an important role of mesospheric and upper stratospheric circulations on the onset and development of SSWs. ©2020. The Authors.
英文关键词	Satellites; predictability; Reanalysis; Satellite data assimilation; Seasonal prediction; Stratosphere-troposphere coupling; Sudden stratospheric warming; Forecasting; data assimilation; observational method; prediction; satellite data; stratosphere; stratosphere-troposphere interaction
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/170631
作者单位	Research Center for Environmental Modeling and Application, Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan; Meteorological Research Institute, Japan Meteorological Agency, Tsukuba, Japan; Meteorological College, Japan Meteorological Agency, Kashiwa, Japan; Graduate School of Science, Kyoto University, Kyoto, Japan
推荐引用方式 GB/T 7714	Noguchi S.,Kuroda Y.,Mukougawa H.,et al. Impact of Satellite Observations on Forecasting Sudden Stratospheric Warmings[J],2020,47(5).
APA	Noguchi S.,Kuroda Y.,Mukougawa H.,Mizuta R.,&Kobayashi C..(2020).Impact of Satellite Observations on Forecasting Sudden Stratospheric Warmings.Geophysical Research Letters,47(5).
MLA	Noguchi S.,et al."Impact of Satellite Observations on Forecasting Sudden Stratospheric Warmings".Geophysical Research Letters 47.5(2020).