Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.4878 |
Future change in the frequency and intensity of wintertime North Pacific blocking in CMIP5 models | |
Lee, Doo Young1; Ahn, Joong-Bae2 | |
2017-04-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2017 |
卷号 | 37期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | Spain; South Korea |
英文摘要 | The current status and future changes in the frequency and intensity of climatological blocking activity over the North Pacific region are investigated using historical and two Representative Concentration Pathway (RCP4.5 and 8.5) simulations in the coupled climate models from phase 5 of the Coupled Model Intercomparison Project (CMIP5) for boreal winters (December-February) over a 30-year period. The future change in the Pacific blocking frequency and intensity are examined in terms of the projected meridional thickness gradient, Hadley circulation changes, and changes in the probability distribution of categorized blocking strength. The five CMIP5 models that show better performance in reproducing climatological blocking events in the historical simulations for the Pacific region are selected for the analyses of the projected blocking activities. The climatological winter Pacific blocking frequencies of most of the individual models and model mean values show a tendency to decrease under global warming conditions. The trend is closely linked with the strong upper level westerly wind, resulting in less meandering air flow, consistent with the enhanced meridional temperature gradients at mid-latitude in the future climate. The decreased frequency in climatological atmospheric blocking over the Pacific under warming may also be influenced by the strengthening of the north-south temperature gradients due to the poleward extension of Hadley circulation in the subtropics. The climatology of the Pacific blocking intensity in boreal winter also tends to decrease slightly due to a future reduction in the number of strong blocking events. |
英文关键词 | blocking frequency blocking intensity Pacific blocking CMIP5 Global warming RCP |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000398859700041 |
WOS关键词 | ATMOSPHERIC BLOCKING ; HEMISPHERE BLOCKING ; CLIMATE MODELS ; CIRCULATION ; ANTICYCLONES ; RESOLUTION ; BIASES |
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/36652 |
专题 | 气候变化 |
作者单位 | 1.Barcelona Supercomp Ctr, Earth Sci Dept, Barcelona, Spain; 2.Pusan Natl Univ, Busan, South Korea |
推荐引用方式 GB/T 7714 | Lee, Doo Young,Ahn, Joong-Bae. Future change in the frequency and intensity of wintertime North Pacific blocking in CMIP5 models[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2017,37(5). |
APA | Lee, Doo Young,&Ahn, Joong-Bae.(2017).Future change in the frequency and intensity of wintertime North Pacific blocking in CMIP5 models.INTERNATIONAL JOURNAL OF CLIMATOLOGY,37(5). |
MLA | Lee, Doo Young,et al."Future change in the frequency and intensity of wintertime North Pacific blocking in CMIP5 models".INTERNATIONAL JOURNAL OF CLIMATOLOGY 37.5(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论