期刊缩写       ACTA METEOROL SIN

期刊全称       Acta Meteorologica Sinica 气象学报

期刊ISSN      0894-0525

2013-2014最新影响因子     1.111

期刊官方网站       http://www.researchgate.net/journal/0894-0525_Acta_Meteorologica_Sinica

期刊投稿网址      

通讯方式       ACTA METEOROLOGICA SINICA PRESS, 46 ZHONGGUANCUN NADAJIE, BEIJING, PEOPLES R CHINA, 100081

涉及的研究方向    地学-气象与大气科学

出版国家       PEOPLES R CHINA

出版周期       Quarterly

出版年份       0

年文章数       69

PubMed Central (PMC)链接 http://www.ncbi.nlm.nih.gov/nlmcatalog?term=0894-0525%5BISSN%5D

平均审稿速度（网友分享经验）       平均6.0 个月的审稿周期

平均录用比例（网友分享经验）       容易

 

 

《Acta Meteorologica Sinica》创刊于1987年，是中国气象学会主办、中国科协主管的全国性大气科学学术性期刊，旨在对外反映我国大气科学领域中最新科研成果，为大气科学研究提供学术交流阵地，推动我国大气科学基础研究和理论研究迅速发展，服务于我国气象现代化建设事业。以气象及水文、海洋、环境等相关学科的科研人员、高等院校师生为主要读者对象，刊登动力气象学、天气学、气候学、数值天气预报、大气物理学、大气化学、大气探测、人工影响天气及应用气象学等大气科学各主要分支学科的代表我国研究新水平的创造性论文；国内外大气科学发展动态的综合评述；大气科学新观点、新理论、新技术、新方法的介绍；大气科学研究工作简报及重要学术会议报道；国内优秀大气科学专著的评介。

 

Characteristics of winter precipitation over southern China and asymmetric impact of ENSO

ABSTRACT:Using multiple datasets, this paper analyzes the characteristics of winter precipitation over southern China and its association with warm and cold phases of El Nio-Southern Oscillation during 1948-2011. The study proves that El Ni?o is an important external forcing factor resulting in above-normal winter precipitation in southern China. The study also reveals that the impact of La Ni?a on the winter precipitation in southern China has a decadal variability.

During the winter of La Ni?a before 1980, the East Asian winter monsoon is stronger than normal with a deeper trough over East Asia, and the western Pacific subtropical high weakens with its high ridge retreating more eastward. Therefore, anomalous northerly winds dominate over southern China, leading to a cold and dry winter. During La Ni?a winter after 1980, however, the East Asian trough is weaker than normal, unfavorable for the southward invasion of the winter monsoon, with the India-Burma the East trough intensified, and the anomalous low-level cyclone excited by La Ni?a located to the west of the Philippines. Therefore, anomalous easterly winds prevail over southern China, which increases moisture flux from the tropical oceans to southern China. Meanwhile, La Ni?a after 1980 may lead to an enhanced and more northward subtropical westerly jet over East Asia in winter. Since southern China is rightly located on the right side of the jet entrance region, anomalous ascending motion dominates there through the secondary vertical circulation, favoring more winter precipitation in southern China. Consequently, a cold and wet winter, sometimes with snowy and icy weathers, would occur in southern China during La Ni?a winter after 1980. Further analyses indicate that the change in the spatial distribution of sea surface temperature anomaly during the La Ni?a mature phase, as well as the decadal variation of the Northern Hemisphere atmospheric circulation, would be the important reasons for the decadal variability of the La Ni?a impact on the atmospheric circulation in East Asia and winter precipitation over southern China after 1980.

 

 

A new insight into the contribution of environmental conditions to tropical cyclone activities

 

ABSTRACT:The changes of tropical cyclone (TC) activities in response to influencing environmental conditions have been paid more and more attention to in recent years. The potential contributions of single and multivariate environmental variables to annual TC frequency and intensity from 1970 to 2009 are investigated in this study. Instead of using correlation coefficient that assumes a set of samples satisfying the normal distribution, a quantitative measurement is formulated based on the information theory. The results show that dynamic environmental variables play an important role in variations of TC activities over the western North Pacific, North Atlantic, and eastern Pacific. These dynamic factors include wind shear between 850 and 200 hPa and 850-hPa relative vorticity. However, the effects of thermal factors on TC activities are distinct over different basins. The thermal environmental variables only have significant contributions to TC frequency and intensity over the eastern Pacific as well as to TC frequency over the North Atlantic. It is found that the primary factors influencing TC activities are indeed not the same over different basins because of the differences in atmospheric conditions and their changes across different areas. The effects of dynamic variables should be considered more in the regions such as the western North Pacific where the thermal conditions are always satisfied.