GSTDTAP  > 气候变化
DOI10.1175/JCLI-D-17-0159.1
Scale Dependence of Midlatitude Air-Sea Interaction
Bishop, Stuart P.1; Small, R. Justin2; Bryan, Frank O.2; Tomas, Robert A.2
2017-10-01
发表期刊JOURNAL OF CLIMATE
ISSN0894-8755
EISSN1520-0442
出版年2017
卷号30期号:20
文章类型Article
语种英语
国家USA
英文摘要

It has traditionally been thought that midlatitude sea surface temperature (SST) variability is predominantly driven by variations in air-sea surface heat fluxes (SHFs) associated with synoptic weather variability. Here it is shown that in regions marked by the highest climatological SST gradients and SHF loss to the atmosphere, the variability in SST and SHF at monthly and longer time scales is driven by internal ocean processes, termed here "oceanic weather.'' This is shown within the context of an energy balance model of coupled air-sea interaction that includes both stochastic forcing for the atmosphere and ocean. The functional form of the lagged correlation between SST and SHF allows us to discriminate between variability that is driven by atmospheric versus oceanic weather. Observations show that the lagged functional relationship of SST-SHF and SST tendency-SHF correlation is indicative of ocean-driven SST variability in the western boundary currents (WBCs) and the Antarctic Circumpolar Current (ACC). By applying spatial and temporal smoothing, thereby dampening the signature SST anomalies generated by eddy stirring, it is shown that the oceanic influence on SST variability increases with time scale but decreases with increasing spatial scale. The scale at which SST variability in the WBCs and the ACC transitions from ocean to atmosphere driven occurs at scales less than 500 km. This transition scale highlights the need to resolve mesoscale eddies in coupled climate models to adequately simulate the variability of air-sea interaction. Away from strong SST fronts the lagged functional relationships are indicative of the traditional paradigm of atmospherically driven SST variability.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000411438000010
WOS关键词SURFACE TEMPERATURE ANOMALIES ; STOCHASTIC CLIMATE MODELS ; HEAT-FLUX ; RECIRCULATION GYRE ; NORTH PACIFIC ; OCEAN ; VARIABILITY ; ATMOSPHERE ; THERMOCLINE ; TRANSPORT
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/19554
专题气候变化
作者单位1.North Carolina State Univ, Raleigh, NC 27695 USA;
2.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA
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GB/T 7714
Bishop, Stuart P.,Small, R. Justin,Bryan, Frank O.,et al. Scale Dependence of Midlatitude Air-Sea Interaction[J]. JOURNAL OF CLIMATE,2017,30(20).
APA Bishop, Stuart P.,Small, R. Justin,Bryan, Frank O.,&Tomas, Robert A..(2017).Scale Dependence of Midlatitude Air-Sea Interaction.JOURNAL OF CLIMATE,30(20).
MLA Bishop, Stuart P.,et al."Scale Dependence of Midlatitude Air-Sea Interaction".JOURNAL OF CLIMATE 30.20(2017).
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