气候变化领域集成服务门户(CCPortal): The enhancement of the impact of the wintertime North Atlantic Oscillation on the subsequent sea surface temperature over the tropical Atlantic since the Middle 1990s

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DOI	10.1175/JCLI-D-19-0934.1
	The enhancement of the impact of the wintertime North Atlantic Oscillation on the subsequent sea surface temperature over the tropical Atlantic since the Middle 1990s
	Qiao S.; Zou M.; Tang S.; Cheung H.N.; Su H.; Li Q.; Feng G.; Donga W.
发表日期	2020
ISSN	0894-8755
起始页码	9653
结束页码	9672
卷号	33 期号:22
英文摘要	The impact of the wintertime North Atlantic Oscillation (NAO) on the subsequent sea surface temperature (SST) anomalies over the tropical Atlantic has experienced obvious interdecadal changes during 1950-2015. During 1995-2015, the negative (positive) phase of the wintertime NAO favors positive (negative) SST anomalies over the tropical Atlantic in the subsequent spring-summer, whereas the NAO-SST connection is insignificant during 1970-94 and is confined to the northern tropical Atlantic (NTA) during 1950-69. Compared to 1970-94, the much stronger influence on the NTA SST during 1995-2015 and 1950-69 is associated with a southward shift of the southern boundary of the NAO. During 1995-2015, the inverted NAO-related warming of the tropical Atlantic consists of three stages: 1) the pronounced increase in SST over the subtropical North Atlantic (SNA) and the tropical South Atlantic (TSA) during December-January, 2) the pronounced increase in SST over the northwestern tropical Atlantic (NWTA) during February-April, and 3) the persistent warming over the tropical Atlantic during May-August. The increases in SST over the SNA and the TSA are attributed to significant positive latent heat flux anomalies via the wind-evaporation effect, which are connected by the suppressed regional Hadley circulation. Afterward, the associated anomalous downward motion over the NWTA persists into February-April, which induces more incoming shortwave radiation and results in a significant increase in the local SST via the cloud-radiation effect. In contrast, during 1950-69, due to the decreased interannual variability of the vertical motion over the NWTA, the anomalous downward branch aloft and the low-level cross-equatorial northwesterly winds associated with the inverted NAO are not evident, and thus the regions with an increase in SST are confined to the Northern Hemisphere. © 2020 American Meteorological Society.
英文关键词	Atmospheric pressure; Atmospheric temperature; Heat flux; Submarine geophysics; Surface properties; Surface waters; Tropics; Hadley circulation; Interannual variability; Interdecadal changes; North Atlantic oscillations; Northern Hemispheres; Sea surface temperature (SST); Sea surface temperature anomalies; Short-wave radiation; Oceanography; air-sea interaction; annual variation; atmospheric circulation; Hadley cell; latent heat flux; North Atlantic Oscillation; Northern Hemisphere; sea surface temperature; seasonal variation; temperature anomaly; Atlantic Ocean; Atlantic Ocean (Tropical)
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171010
作者单位	School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai, China; Key Laboratory of Tropical Atmosphere-Ocean System, Sun Yat-sen University, Ministry of Education, Zhuhai, China; Southern Marine Science, Engineering Guangdong Laboratory, Zhuhai, China; School of Physical Science and Technology, Yangzhou University, Yangzhou, China; School of Atmospheric Sciences, Lanzhou University, Lanzhou, China; National Climate Center, China Meteorological Administration, Beijing, China; GoldWind Smart Energy Technology, Beijing, China
推荐引用方式 GB/T 7714	Qiao S.,Zou M.,Tang S.,et al. The enhancement of the impact of the wintertime North Atlantic Oscillation on the subsequent sea surface temperature over the tropical Atlantic since the Middle 1990s[J],2020,33(22).
APA	Qiao S..,Zou M..,Tang S..,Cheung H.N..,Su H..,...&Donga W..(2020).The enhancement of the impact of the wintertime North Atlantic Oscillation on the subsequent sea surface temperature over the tropical Atlantic since the Middle 1990s.Journal of Climate,33(22).
MLA	Qiao S.,et al."The enhancement of the impact of the wintertime North Atlantic Oscillation on the subsequent sea surface temperature over the tropical Atlantic since the Middle 1990s".Journal of Climate 33.22(2020).