globalchange  > 影响、适应和脆弱性
DOI: 10.1088/1748-9326/11/7/074001
论文题名:
Relationship between North American winter temperature and large-scale atmospheric circulation anomalies and its decadal variation
作者: B Yu; H Lin; Z W Wu; W J Merryfield
刊名: Environmental Research Letters
ISSN: 1748-9326
出版年: 2016
发表日期: 2016-07-01
卷: 11, 期:7
语种: 英语
英文摘要:

The interannual relationship between North American (NA) winter temperature and large-scale atmospheric circulation anomalies and its decadal variation are analyzed. NA temperature anomalies are dominated by two leading maximum covariance analysis (MCA) modes of NA surface temperature and Northern Hemisphere 500 hPa geopotential anomalies. A new teleconnection index, termed the Asian-Bering-North American (ABNA) pattern, is constructed from the normalized geopotential field after linearly removing the contribution of the Pacific-North American (PNA) pattern. The ABNA pattern is sustained by synoptic eddy forcing. The first MCA mode of NA surface temperature is highly correlated with the PNA and ABNA teleconnections, and the second mode with the North Atlantic Oscillation (NAO). This indicates that NA temperature is largely controlled by these three large-scale atmospheric patterns, i.e., the PNA, ABNA and NAO. These temperature-circulation relationships appear stationary in the 20th century.

URL: http://iopscience.iop.org/article/10.1088/1748-9326/11/7/074001
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/13831
Appears in Collections:影响、适应和脆弱性
气候减缓与适应

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作者单位: Climate Research Division, Environment and Climate Change Canada, Toronto, Canada;Meteorological Research Division, Environment and Climate Change Canada, Dorval, Canada;Earth System Modeling Center, Nanjing University of Information Science and Technology, Nanjing, People’s Republic of China;Canadian Centre for Climate Modelling and Analysis, Environment and Climate Change Canada, Victoria, Canada

Recommended Citation:
B Yu,H Lin,Z W Wu,et al. Relationship between North American winter temperature and large-scale atmospheric circulation anomalies and its decadal variation[J]. Environmental Research Letters,2016-01-01,11(7)
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