Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-18-0692.1 |
Reduction in Northern Midlatitude 2-m Temperature Variability due to Arctic Sea Ice Loss | |
Collow, Thomas W.; Wang, Wanqiu; Kumar, Arun | |
2019-08-01 | |
发表期刊 | JOURNAL OF CLIMATE
![]() |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2019 |
卷号 | 32期号:16页码:5021-5035 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | In this study, we investigate links between Arctic sea ice loss and the variability of 2-m temperatures over a 6-month period (November-April) over two domains centered over northern Eurasia and northern North America. Based on data from the Climate Forecast System Reanalysis (CFSR), there has been an increase (a decrease) in recent seasonal temperature variability over Eurasia (North America), which can be attributed to cooling (warming) during the winter months. Decreases in the intraseasonal variability of temperature anomalies, however, are noted in both regions for the November-April period. This study investigates the role of different forcings on the changes seen in the reanalysis product using Atmospheric Model Intercomparison Project simulations forced with repeating sea surface temperature, sea ice, and carbon dioxide concentration relative to climatologies from two different base periods, 1981-90 and 2005-14. The seasonal temperature and intraseasonal anomaly variabilities are examined, and we find that only the simulations with reduction in sea ice (2005-14 base-period sea ice concentration) produce significant decreases in intraseasonal temperature anomaly variability over these regions, agreeing with the CFSR analysis. Runs that reduce sea ice also result in a significant decrease in the frequency and magnitude of extreme warm and cold temperature anomalies. It is proposed that the weakened latitudinal temperature gradient, resulting from decreased sea ice, leads to reduced meridional temperature advection variability, which in turn contributes to the reduction in the variability of temperature anomalies. |
英文关键词 | Atmosphere Sea ice Surface temperature Numerical analysis modeling Intraseasonal variability Seasonal cycle |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000475909600004 |
WOS关键词 | ATMOSPHERIC CIRCULATION RESPONSE ; AMPLIFICATION ; TRENDS |
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/185725 |
专题 | 气候变化 |
作者单位 | NOAA, NWS, NCEP, Climate Predict Ctr, College Pk, MD 20740 USA |
推荐引用方式 GB/T 7714 | Collow, Thomas W.,Wang, Wanqiu,Kumar, Arun. Reduction in Northern Midlatitude 2-m Temperature Variability due to Arctic Sea Ice Loss[J]. JOURNAL OF CLIMATE,2019,32(16):5021-5035. |
APA | Collow, Thomas W.,Wang, Wanqiu,&Kumar, Arun.(2019).Reduction in Northern Midlatitude 2-m Temperature Variability due to Arctic Sea Ice Loss.JOURNAL OF CLIMATE,32(16),5021-5035. |
MLA | Collow, Thomas W.,et al."Reduction in Northern Midlatitude 2-m Temperature Variability due to Arctic Sea Ice Loss".JOURNAL OF CLIMATE 32.16(2019):5021-5035. |
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