Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-19-0438.1 |
Projected Changes in Daily Variability and Seasonal Cycle of Near-Surface Air Temperature over the Globe during the Twenty-First Century | |
Chen, Jiao1,2; Dai, Aiguo2; Zhang, Yaocun1 | |
2019-12-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:24页码:8537-8561 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Increases in atmospheric greenhouse gases will not only raise Earth's temperature but may also change its variability and seasonal cycle. Here CMIP5 model data are analyzed to quantify these changes in surface air temperature (Tas) and investigate the underlying processes. The models capture well the mean Tas seasonal cycle and variability and their changes in reanalysis, which shows decreasing Tas seasonal amplitudes and variability over the Arctic and Southern Ocean from 1979 to 2017. Daily Tas variability and seasonal amplitude are projected to decrease in the twenty-first century at high latitudes (except for boreal summer when Tas variability increases) but increase at low latitudes. The day of the maximum or minimum Tas shows large delays over high-latitude oceans, while it changes little at low latitudes. These Tas changes at high latitudes are linked to the polar amplification of warming and sea ice loss, which cause larger warming in winter than summer due to extra heating from the ocean during the cold season. Reduced sea ice cover also decreases its ability to cause Tas variations, contributing to the decreased Tas variability at high latitudes. Over low-midlatitude oceans, larger increases in surface evaporation in winter than summer (due to strong winter winds, strengthened winter winds in the Southern Hemisphere, and increased winter surface humidity gradients over the Northern Hemisphere low latitudes), coupled with strong ocean mixing in winter, lead to smaller surface warming in winter than summer and thus increased seasonal amplitudes there. These changes result in narrower (wider) Tas distributions over the high (low) latitudes, which may have important implications for other related fields. |
英文关键词 | General circulation models Climate variability Seasonal variability Trends |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000498885500002 |
WOS关键词 | CLIMATE-CHANGE ; INTERANNUAL VARIABILITY ; PART I ; PRECIPITATION ; WINTER ; MODULATION ; MECHANISMS ; MAGNITUDE ; AMPLITUDE ; ENSEMBLE |
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/225655 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Nanjing Univ, Sch Atmospher Sci, Nanjing, Jiangsu, Peoples R China; 2.SUNY Albany, Dept Atmospher & Environm Sci, Albany, NY 12222 USA |
推荐引用方式 GB/T 7714 | Chen, Jiao,Dai, Aiguo,Zhang, Yaocun. Projected Changes in Daily Variability and Seasonal Cycle of Near-Surface Air Temperature over the Globe during the Twenty-First Century[J]. JOURNAL OF CLIMATE,2019,32(24):8537-8561. |
APA | Chen, Jiao,Dai, Aiguo,&Zhang, Yaocun.(2019).Projected Changes in Daily Variability and Seasonal Cycle of Near-Surface Air Temperature over the Globe during the Twenty-First Century.JOURNAL OF CLIMATE,32(24),8537-8561. |
MLA | Chen, Jiao,et al."Projected Changes in Daily Variability and Seasonal Cycle of Near-Surface Air Temperature over the Globe during the Twenty-First Century".JOURNAL OF CLIMATE 32.24(2019):8537-8561. |
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