Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s00382-016-3501-0 |
Relationships between outgoing longwave radiation and diabatic heating in reanalyses | |
Zhang, Kai1; Randel, William J.2; Fu, Rong1,3 | |
2017-10-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2017 |
卷号 | 49 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | This study investigates relationships between daily variability in National Oceanographic and Atmospheric Administration (NOAA) outgoing longwave radiation (OLR), as a proxy for deep convection, and the global diabatic heat budget derived from reanalysis data sets. Results are evaluated based on data from ECMWF Reanalysis (ERA-Interim), Japanese 55-year Reanalysis (JRA-55) and Modern-Era Retrospective Analysis for Research and Applications (MERRA2). The diabatic heating is separated into components linked to 'physics' (mainly latent heat fluxes), plus longwave (LW) and shortwave (SW) radiative tendencies. Transient variability in deep convection is highly correlated with diabatic heating throughout the troposphere and stratosphere. Correlation patterns and composite analyses show that enhanced deep convection (lower OLR) is linked to amplified heating in the tropical troposphere and in the mid-latitude storm tracks, tied to latent heat release. Enhanced convection is also linked to radiative cooling in the lower stratosphere, due to weaker upwelling LW from lower altitudes. Enhanced transient deep convection increases LW and decreases SW radiation in the lower troposphere, with opposite effects in the mid to upper troposphere. The compensating effects in LW and SW radiation are largely linked to variations in cloud fraction and water content (vapor, liquid and ice). These radiative balances in reanalyses are in agreement with idealized calculations using a column radiative transfer model. The overall relationships between OLR and diabatic heating are robust among the different reanalyses, although there are differences in radiative tendencies in the tropics due to large differences of cloud water and ice content among the reanalyses. These calculations provide a simple statistical method to quantify variations in diabatic heating linked to transient deep convection in the climate system. |
英文关键词 | Diabatic heating Outgoing longwave radiation Reanalyses Cloud Longwave Shortwave |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000410803300041 |
WOS关键词 | STRATOSPHERIC WATER-VAPOR ; TROPICAL TROPOPAUSE ; UPPER TROPOSPHERE ; SUMMER MONSOON ; MODEL ; IMPACT ; DEHYDRATION ; CIRCULATION ; ATMOSPHERES ; SIMULATION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/36014 |
专题 | 气候变化 |
作者单位 | 1.Univ Texas Austin, Jackson Sch Geosci, Austin, TX 78712 USA; 2.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA; 3.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA USA |
推荐引用方式 GB/T 7714 | Zhang, Kai,Randel, William J.,Fu, Rong. Relationships between outgoing longwave radiation and diabatic heating in reanalyses[J]. CLIMATE DYNAMICS,2017,49. |
APA | Zhang, Kai,Randel, William J.,&Fu, Rong.(2017).Relationships between outgoing longwave radiation and diabatic heating in reanalyses.CLIMATE DYNAMICS,49. |
MLA | Zhang, Kai,et al."Relationships between outgoing longwave radiation and diabatic heating in reanalyses".CLIMATE DYNAMICS 49(2017). |
条目包含的文件 | 条目无相关文件。 |
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