气候变化领域集成服务门户(CCPortal): Significant Contribution of Mesoscale Overturning to Tropical Mass and Energy Transport Revealed by the ERA5 Reanalysis

CCPortal

DOI	10.1029/2019GL085333
	Significant Contribution of Mesoscale Overturning to Tropical Mass and Energy Transport Revealed by the ERA5 Reanalysis
	Chen X.; Pauluis O.M.; Leung L.R.; Zhang F.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:1
英文摘要	Differential solar heating drives a global multiscale atmospheric overturning that has remained elusive due to the lack of accurate estimates of vertical motions at/below the mesoscale (<1,000 km). Here we compare the atmospheric overturning in the newest-generation (ERA5) and the previous-generation (ERA-Interim) reanalyses from the European Centre for Medium-Range Weather Forecasts based on isentropic averaging that identifies the contribution of different scales. The two reanalyses feature large-scale overturning of similar magnitude. However, ERA5 reveals a mesoscale overturning that is 74% of the large-scale overturning over the tropics, while the former in ERA-Interim is much weaker (42%). Comparison with observed outgoing longwave radiation suggests that the magnitude and seasonal migrations of the deep mesoscale overturning in the upper troposphere over the tropics are better captured by ERA5 than ERA-Interim. Hence, in the tropics, mesoscale overturning may play a comparable role to large-scale overturning in vertical mass and energy transport. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Atmospheric movements; Tropics; ERA5; European centre for medium-range weather forecasts; Isentropic analysis; Mass and energy transport; Outgoing longwave radiation; Seasonal migration; Tropical convection; Upper troposphere; Weather forecasting; atmospheric convection; heating; longwave radiation; magnitude; mesoscale motion; tropical environment; troposphere; weather forecasting
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/170861
作者单位	Department of Meteorology and Atmospheric Science, and Center for Advanced Data Assimilation and Predictability Techniques, The Pennsylvania State UniversityPA, United States; Center for Prototype Climate Modeling, New York University Abu Dhabi, Abu Dhabi, United Arab Emirates; Courant Institute of Mathematical Sciences, New York University, New York, NY, United States; Atmospheric Sciences and Global Change, Pacific Northwest National Laboratory, Richland, WA, United States
推荐引用方式 GB/T 7714	Chen X.,Pauluis O.M.,Leung L.R.,et al. Significant Contribution of Mesoscale Overturning to Tropical Mass and Energy Transport Revealed by the ERA5 Reanalysis[J],2020,47(1).
APA	Chen X.,Pauluis O.M.,Leung L.R.,&Zhang F..(2020).Significant Contribution of Mesoscale Overturning to Tropical Mass and Energy Transport Revealed by the ERA5 Reanalysis.Geophysical Research Letters,47(1).
MLA	Chen X.,et al."Significant Contribution of Mesoscale Overturning to Tropical Mass and Energy Transport Revealed by the ERA5 Reanalysis".Geophysical Research Letters 47.1(2020).