Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.6101 |
Large-scale climatic factors driving glacier recession in the Greater Caucasus, 20th-21st century | |
Toropov, Pavel A.1,2; Aleshina, Maria A.1; Grachev, Alexei M.1 | |
2019-10-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
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ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2019 |
卷号 | 39期号:12页码:4703-4720 |
文章类型 | Article |
语种 | 英语 |
国家 | Russia |
英文摘要 | Over the past 30 years, there has been a catastrophic reduction of the glacierized area in the mountains of the Greater Caucasus, with the values reaching 0.69% per year. Physical mechanisms accountable for such intense melting are investigated in this study. The main trends in the temperature-moisture regime of the Caucasus and adjacent areas for the period 1982-2015 were recovered based on instrumental data and the ERA-Interim data reanalysis. It is demonstrated that there is statistically significant warming for the summer season in the region as a whole. No statistically significant changes were detected in the precipitation regime, despite the increase in the integral moisture content of the atmosphere and in the potential convective energy. The integral moisture content growth is compensated by the increase in the moisture divergence. This happens due to the intensification of large-scale descending atmospheric motions. As a result, the seasonal and annual precipitation amounts do not change significantly. Such effects are possibly the consequence of the global process of "widening of the tropics." This process is most clearly manifested in the expansion of the Hadley cell and the northward shift of its descending branch. This process can lead to an increased frequency of anticyclones over the southern regions of Europe during the warm part of the year. This, in turn, leads to a negative cloud cover trend as well as an increase in the closely related radiation balance. Apparently, this process is the cause of the intensive reduction of the glaciation area in the North Caucasus. |
英文关键词 | glacial climatology melting glaciers of the Caucasus mountain meteorology observational data reanalysis data regional climatology |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000489003100009 |
WOS关键词 | STORM TRACKS ; MASS-BALANCE ; TEMPERATURE ; KILIMANJARO ; MODEL ; 20TH-CENTURY ; VARIABILITY ; SENSITIVITY ; PERFORMANCE ; MOUNTAINS |
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/187396 |
专题 | 气候变化 |
作者单位 | 1.Russian Acad Sci, Lab Climatol, Inst Geog, Moscow, Russia; 2.Moscow MV Lomonosov State Univ, Dept Meteorol & Climatol, Fac Geog, Moscow, Russia |
推荐引用方式 GB/T 7714 | Toropov, Pavel A.,Aleshina, Maria A.,Grachev, Alexei M.. Large-scale climatic factors driving glacier recession in the Greater Caucasus, 20th-21st century[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2019,39(12):4703-4720. |
APA | Toropov, Pavel A.,Aleshina, Maria A.,&Grachev, Alexei M..(2019).Large-scale climatic factors driving glacier recession in the Greater Caucasus, 20th-21st century.INTERNATIONAL JOURNAL OF CLIMATOLOGY,39(12),4703-4720. |
MLA | Toropov, Pavel A.,et al."Large-scale climatic factors driving glacier recession in the Greater Caucasus, 20th-21st century".INTERNATIONAL JOURNAL OF CLIMATOLOGY 39.12(2019):4703-4720. |
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