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A stable snow-atmosphere coupled mode
Zhao, L (Zhao, Liang)1,2; Zhu, YX (Zhu, Yuxiang)2; Liu, HW (Liu, Haiwen)3; Liu, ZF (Liu, Zhongfang)4; Liu, YJ (Liu, Yanju)5; Li, XP (Li, Xiuping)6; Chen, Z (Chen, Zhou)7; Zhu, YX
Source PublicationCLIMATE DYNAMICS
AbstractSnow is both an important lower boundary forcing of the atmosphere and a response to atmospheric forcing in the extratropics. It is still unclear whether a stable snow-atmosphere coupled mode exists in the extratropics, like the ENSO in the tropics. Using Sliding Correlation analysis over Any Window, the present study quantitatively evaluates the stability of coupling relationships between the major modes of winter snow over the Northern Hemisphere and the winter atmospheric Arctic Oscillation (AO), the Antarctic Oscillation (AAO) and the Siberian High over the period 1872-2010, and discusses their possible relationships for different seasons. Results show that the first mode of the winter snow cover fraction and the winter AO together constitute a stable snow-atmosphere coupled mode, the SNAO. The coupled mode is stronger during recent decades than before. The snow anomaly over Europe is one key factor of the SNAO mode due to the high stability there, and the polar vortex anomaly in the atmosphere is its other key factor. The continuity of signals in the SNAO between autumn and winter is weaker than that between winter and spring. The second winter snow mode is generally stably correlated with the winter AAO and was more stable before the 1970s. The AAO signal with boreal snow has a strong continuity in seasonal transition. Generally, through these coupled modes, snow and atmosphere can interact in the same season or between different seasons: autumn snow can influence the winter atmosphere; the winter atmosphere can influence spring snow.
Subject Area自然地理学
WOS IDWOS:000384549500005
Indexed BySCI
KeywordHemisphere Annular Mode Arctic Oscillation Extratropical Circulation Reanalysis Project Cover Variability Siberian Snow Part i Climate 20th-century Trends
Cooperation Status国内
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorZhu, YX
Affiliation1.61741 Troops, Beijing, Peoples R China
2.China Meteorol Adm, CMA Training Ctr, 46 Zhongguancun South St, Beijing 100081, Peoples R China
3.Chengdu Univ Informat Technol, Coll Atmospher Sci, Plateau Atmosphere & Environm Key Lab Sichuan Pro, Chengdu, Peoples R China
4.Tongji Univ, State Key Lab Marine Geol, Shanghai, Peoples R China
5.Natl Climate Ctr, Beijing, Peoples R China
6.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing, Peoples R China
7.Nanchang Univ, Inst Space Sci & Technol, Nanchang, Peoples R China
Recommended Citation
GB/T 7714
Zhao, L ,Zhu, YX ,Liu, HW ,et al. A stable snow-atmosphere coupled mode[J]. CLIMATE DYNAMICS,2016,47(7-8):2085-2104.
APA Zhao, L .,Zhu, YX .,Liu, HW .,Liu, ZF .,Liu, YJ .,...&Zhu, YX.(2016).A stable snow-atmosphere coupled mode.CLIMATE DYNAMICS,47(7-8),2085-2104.
MLA Zhao, L ,et al."A stable snow-atmosphere coupled mode".CLIMATE DYNAMICS 47.7-8(2016):2085-2104.
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