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DOI | 10.1175/JCLI-D-17-0591.1 |
A Climatology of Strong Large-Scale Ocean Evaporation Events. Part I: Identification, Global Distribution, and Associated Climate Conditions | |
Aemisegger, Franziska1,2; Papritz, Lukas3,4 | |
2018-09-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:18页码:7287-7312 |
文章类型 | Article |
语种 | 英语 |
国家 | Sweden; Switzerland; Norway |
英文摘要 | This paper presents an object-based, global climatology (1979-2014) of strong large-scale ocean evaporation (SLOE) and its associated climatic properties. SLOE is diagnosed using an atmospheric moisture uptake efficiency criterion related to the ratio of surface evaporation and integrated water vapor content in the near-surface atmosphere. The chosen Eulerian identification procedure focuses on events that strongly contribute to the available near-surface atmospheric humidity. SLOE is particularly frequent along the warm ocean western boundary currents, downstream of large continental areas, and at the sea ice edge in polar regions with frequent cold-air outbreaks. Furthermore, wind-driven SLOE occurs in regions with topographically enforced winds. On a global annual average, SLOE occurs only 6% of the time but explains 22% of total ocean evaporation. An analysis of the past history and fate of air parcels involved in cold season SLOE in the North Atlantic and south Indian Oceans shows that cold-air advection is the main mechanism that induces these events. Extratropical cyclones thereby play an important role in setting the necessary equatorward synoptic flow. Consequently, the interannual variability of SLOE associated with the North Atlantic Oscillation and the southern annular mode reveals a very high sensitivity of SLOE with respect to the location of the storm tracks. This study highlights the strong link between transient synoptic events and the spatiotemporal variability in ocean evaporation patterns, which cannot be deduced from thermodynamic steady-state and climate mean state considerations alone. |
英文关键词 | Hydrologic cycle Extratropical cyclones Air-sea interaction Evaporation Water vapor |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000440402800008 |
WOS关键词 | AIR-SEA INTERACTION ; SOUTHERN ANNULAR MODE ; NORTH-ATLANTIC OSCILLATION ; WESTERN BOUNDARY CURRENTS ; ERA-INTERIM REANALYSIS ; TURBULENT HEAT FLUXES ; GREENLAND TIP JET ; ENERGY BUDGET ; EXTRATROPICAL CYCLONES ; ECMWF ANALYSES |
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/20207 |
专题 | 气候变化 |
作者单位 | 1.Lund Univ, Ctr Environm & Climate Res, Lund, Sweden; 2.Swiss Fed Inst Technol, Inst Atmospher & Climate Sci, Zurich, Switzerland; 3.Univ Bergen, Geophys Inst, Bergen, Norway; 4.Bjerknes Ctr Climate Res, Bergen, Norway |
推荐引用方式 GB/T 7714 | Aemisegger, Franziska,Papritz, Lukas. A Climatology of Strong Large-Scale Ocean Evaporation Events. Part I: Identification, Global Distribution, and Associated Climate Conditions[J]. JOURNAL OF CLIMATE,2018,31(18):7287-7312. |
APA | Aemisegger, Franziska,&Papritz, Lukas.(2018).A Climatology of Strong Large-Scale Ocean Evaporation Events. Part I: Identification, Global Distribution, and Associated Climate Conditions.JOURNAL OF CLIMATE,31(18),7287-7312. |
MLA | Aemisegger, Franziska,et al."A Climatology of Strong Large-Scale Ocean Evaporation Events. Part I: Identification, Global Distribution, and Associated Climate Conditions".JOURNAL OF CLIMATE 31.18(2018):7287-7312. |
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