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| DOI | 10.1007/s00382-018-4306-0 |
| Energetics of interannual temperature variability | |
| Räisänen J. | |
| 发表日期 | 2019 |
| ISSN | 0930-7575 |
| 起始页码 | 3139 |
| 结束页码 | 3156 |
| 卷号 | 52期号:2020-05-06 |
| 英文摘要 | Energetics of interannual temperature variability in the years 1980–2016 is studied using two reanalysis data sets. Monthly temperature anomalies are decomposed to contributions from the net surface energy flux, atmospheric energy convergence minus storage (CONV), and processes that affect the top-of-the-atmosphere radiation balance. The analysis reveals a strong compensation between the net surface heat flux and CONV over the ice-free oceans, with the former driving the temperature variability over the tropical oceans and the latter at higher latitudes. CONV also makes a dominant contribution to temperature anomalies in the winter hemisphere extratopical continents. During the summer half-year and in the tropics, however, variations in cloudiness dominate the temperature variability over land, while the contribution of CONV is modest or even negative. The latter reflects the diffusion-like behaviour of short-term atmospheric variability, which acts to spread out the local, to a large extent cloud-induced temperature anomalies to larger areas. The ERA-Interim and MERRA2 reanalyses largely agree on the general energy budget features of interannual temperature variability, although substantial quantitative differences occur in some of the individual terms. © 2018, Springer-Verlag GmbH Germany, part of Springer Nature. |
| 英文关键词 | Energy budget; ERA-Interim; MERRA2; Reanalysis; Temperature variability |
| 语种 | 英语 |
| scopus关键词 | annual variation; data set; energetics; energy budget; heat flux; spatial variation; surface temperature; temperature anomaly; temperature gradient; top of atmosphere; tropical region |
| 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/146487 |
| 作者单位 | Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, P.O. Box 64, Helsinki, 00014, Finland |
| 推荐引用方式 GB/T 7714 | Räisänen J.. Energetics of interannual temperature variability[J],2019,52(2020-05-06). |
| APA | Räisänen J..(2019).Energetics of interannual temperature variability.Climate Dynamics,52(2020-05-06). |
| MLA | Räisänen J.."Energetics of interannual temperature variability".Climate Dynamics 52.2020-05-06(2019). |
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