北半球大气环流主模态时空分析
Spatio-Temporal Analysis of Main Modes of Atmospheric Circulation in the Northern Hemisphere
DOI: 10.12677/AEP.2023.134126, PDF,    科研立项经费支持
作者: 刘甜甜*：山东省气象防灾减灾重点实验室，山东 济南；泰安市气象局，山东 泰安；王 新：93161部队，辽宁 沈阳
关键词: 极涡面积指数；极涡强度指数；气候；Polar Vortex Area Index； Polar Vortex Intensity Index； Climate
摘要: 利用1948~2015年的NCEP/NCAR资料全球月平均再分析资料作经验正交分解(EOF)，获得北极涛动指数(AOI)和北极偶极子指数(DAI)并对EOF分析后的时间序列进行回归分析。我们主要总结极地涡旋的四个方面，包括极地涡旋指数(极涡面积指数和极涡强度指数)，其变化特征，以及对中国冬季气候的影响和极地涡旋影响因子。极地涡旋主要具有年际和年代际变化特征。此外，在年际时间尺度上，极地涡流区域在中国的温度和降水之间呈负相关，在年代际时间尺度上，极地涡流面积和中国温度呈现负相关。
Abstract: Based on the monthly mean reanalysis data of NCEP/NCAR data from 1948 to 2015, through the Empirical Orthogonal Function (EOF), the AO index and DA index were obtained and the time series after EOF analysis were analyzed. We mainly summarize four aspects of the polar vortex, concluding the polar vortex index (PVA and PVI), its variation characteristics, its impact on the winter climate in China and the polar vortex impact factors. Polar vortex mainly has interannual and interdecadal variation characteristics. Besides, in interannual timescale, the polar vortex area demonstrates a negative correlation between temperature and precipitation in China, and in interdecadal timescale, polar vortex area and the temperature in China show a negative correlation.
文章引用：刘甜甜, 王新. 北半球大气环流主模态时空分析[J]. 环境保护前沿, 2023, 13(4): 1041-1052. https://doi.org/10.12677/AEP.2023.134126

参考文献

[1] Thompson, D.W.J. and Wallace, J.M. (1998) The Arctic Oscillation Signature in the Wintertime Geopotential Height and Temperature Fields. Geophysical Research Letters, 25, 1297-1300. [Google Scholar] [CrossRef] 
[2] Wang, B., Wu, R.G., Lau, K.M. (2001) Interannual Variability of the Asian Summer Monsoon: Contrasts between the Indian and the Western North Pacific-East Asian Monsoon. Journal of Climate, 14, 4073-4090. [Google Scholar] [CrossRef] 
[3] Wang, J., Zhang, J., Watanabe, E., et al. (2009) Is the Dipole Anomaly a Major Driver to Record Lows in Arctic Summer Sea Ice Extent? Geophysical Re-search Letters, 36, 277-291. [Google Scholar] [CrossRef] 
[4] 樊婷婷, 黄菲, 苏洁, 等. 北半球中高纬度大气环流主模态的季节演变及其与北极海冰变化的联系[J]. 中国海洋大学学报自然科学版, 2012, 42(7): 19-25.
[5] Serreze, M.C. and Barrett, A.P. (2011) Characteristics of the Beaufort Sea High. Journal of Climate, 24, 159-182. [Google Scholar] [CrossRef] 
[6] Wang, B. and An, S. (2005) A Method for Detecting Sea-son-Dependent Modes of Climate Variability: S-EOF Analysis. Geophysical Research Letters, 32, 291-310. [Google Scholar] [CrossRef] 
[7] Zhao, J., Cao, Y. and Shi, J. (2006) Core Region of Arctic Oscillation and the Main Atmospheric Events Impact on the Arctic. Geophysical Research Letters, 33. [Google Scholar] [CrossRef]