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DOI | 10.1007/s00382-017-3876-6 |
The Eurasia-North Pacific Oscillation in atmospheric mass variations independent of both IHO and AO and its possible impacts on winter climate | |
Zhang, Qian; Guan, Zhaoyong; Li, Minggang | |
2018-06-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2018 |
卷号 | 50页码:4303-4322 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Using NCEP/NCAR reanalysis, we have investigated the features of migrations of atmospheric mass (AM) between land and ocean in Eurasia-North Pacific domain in boreal winter after having both signals of Inter-hemispheric Oscillation and Arctic Oscillation removed from the physical quantities. It is found that there is a Eurasia-North Pacific Oscillation (ENPO) in surface air pressure anomalies. This ENPO pattern characterizes with two oppositely signed anomalous surface pressure centers over Eurasia and North Pacific respectively, indicating strong connections between Siberian high and Aleutian low during period 1979-2012. The maintenance of this ENPO teleconnection is significantly associated with three factors including the anomalous AM flows and zonal circulation cell over Eurasia-North Pacific domain, the Rossby wave energy propagations, and the thermal forcing contrasts near the surface between Eurasia and North Pacific during boreal winter. The variations of both wintertime rainfall and temperature over Eurasia may be strongly affected by ENPO. When the ENPO index is positive (negative), there occurs the AM accumulation (depletion) over Eurasia with simultaneous depletion (accumulation) over mid-latitude North-Pacific. Correspondingly, this anomalous surface pressure pattern along with the related circulation anomalies at different isobaric levels possibly results in winter precipitation decreases (increases) over Siberian Plain and East China, whereas increases (decreases) over southeastern Europe, Xinjiang of China, and the west coast of Sea of Okhotsk. On the other hand, surface air temperature decreases (increases) over large areas of Eurasia. These results are helpful for our better understanding the mechanisms behind circulation and winter climate variations over Eurasia-North Pacific region. |
英文关键词 | Tele-connection Atmospheric mass Eurasia-North Pacific domain Winter climate anomalies |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000432597400020 |
WOS关键词 | ANNULAR MODES ; INTERHEMISPHERIC OSCILLATIONS ; SUBTROPICAL ANTICYCLONE ; REANALYSIS PROJECT ; SEASONAL CYCLE ; WAVE-ACTIVITY ; HEMISPHERE ; CIRCULATION ; MONSOON ; VARIABILITY |
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/36119 |
专题 | 气候变化 |
作者单位 | Nanjing Univ Informat Sci & Technol, Key Lab Meteorol Disaster, Joint Int Res Lab Climate & Environm Change ILCEC, Minist Educ KLME,CIC FEMD, Nanjing 210044, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Qian,Guan, Zhaoyong,Li, Minggang. The Eurasia-North Pacific Oscillation in atmospheric mass variations independent of both IHO and AO and its possible impacts on winter climate[J]. CLIMATE DYNAMICS,2018,50:4303-4322. |
APA | Zhang, Qian,Guan, Zhaoyong,&Li, Minggang.(2018).The Eurasia-North Pacific Oscillation in atmospheric mass variations independent of both IHO and AO and its possible impacts on winter climate.CLIMATE DYNAMICS,50,4303-4322. |
MLA | Zhang, Qian,et al."The Eurasia-North Pacific Oscillation in atmospheric mass variations independent of both IHO and AO and its possible impacts on winter climate".CLIMATE DYNAMICS 50(2018):4303-4322. |
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