Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.6344 |
Rising mean and extreme near-surface air temperature across Nepal | |
Karki, Ramchandra1,2; ul Hasson, Shabeh1,3; Gerlitz, Lars4; Talchabhadel, Rocky2,5; Schickhoff, Udo1; Scholten, Thomas6; Boehner, Juergen1 | |
2019-11-15 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
![]() |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | Germany; Nepal; Pakistan; Japan |
英文摘要 | Owing to unique topographic and ecological diversity, central Himalayan state of Nepal is exposed to adverse impacts of climate change and associated disasters. However, countrywide historical assessment of mean and extreme temperature changes, a prerequisite for devising adequate adaptation strategies, is still lacking. Here, we present a comprehensive picture of mean and extreme temperature trends across Nepal over the 1980-2016 period, based on high-quality daily temperature observations from 46 stations. Our results suggest that besides winter cooling in southern lowlands, the country features a widespread warming, which is higher for maximum temperature (similar to 0.04 degrees Cyear(-1)) than for minimum temperature (similar to 0.02 degrees Cyear(-1)), over the mountainous region than in valleys and lowlands and during the pre-monsoon season than for the rest of the year. Consistently, we found a higher increasing trend for warm days (13 daysdecade(-1)) than for warm nights (4 daysdecade(-1)), whereas the rates of decrease for cold days and cold nights are the same (6 daysdecade(-1)). Further investigations reveal that pronounced warming in maximum temperature over mountain regions can be attributed to less cloud cover and snowfall in recent decades during non-monsoon seasons as a result of positive geopotential height anomalies and strengthening of anticyclonic circulations in the mid-to-upper troposphere. Similarly, increased stability of lower atmosphere during winter and post-monsoon seasons caused prolonged and frequent periods of fog over lowlands, resulting in significant winter cooling there. |
英文关键词 | adaptation climate change climatic extremes Himalayas increase in warm days and nights Nepal |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000496638300001 |
WOS关键词 | STREAMFLOW TREND DETECTION ; KOSHI RIVER-BASIN ; CLIMATE-CHANGE ; PRECIPITATION EXTREMES ; CENTRAL HIMALAYA ; EVEREST REGION ; SOUTHERN SLOPE ; WRF ; SIMULATIONS ; VARIABILITY |
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/225446 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Univ Hamburg, Inst Geog, Ctr Earth Syst Res & Sustainabil, Bundesstr 55, D-20146 Hamburg, Germany; 2.Govt Nepal, Dept Hydrol & Meteorol, Kathmandu, Nepal; 3.Inst Space Technol, Dept Space Sci, Islamabad, Pakistan; 4.GFZ German Res Ctr Geosci, Sect Hydrol, Potsdam, Germany; 5.Kyoto Univ, Disaster Prevent Res Inst, Kyoto, Japan; 6.Univ Tubingen, Dept Geosci Soil Sci & Geomorphol, Tubingen, Germany |
推荐引用方式 GB/T 7714 | Karki, Ramchandra,ul Hasson, Shabeh,Gerlitz, Lars,et al. Rising mean and extreme near-surface air temperature across Nepal[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2019. |
APA | Karki, Ramchandra.,ul Hasson, Shabeh.,Gerlitz, Lars.,Talchabhadel, Rocky.,Schickhoff, Udo.,...&Boehner, Juergen.(2019).Rising mean and extreme near-surface air temperature across Nepal.INTERNATIONAL JOURNAL OF CLIMATOLOGY. |
MLA | Karki, Ramchandra,et al."Rising mean and extreme near-surface air temperature across Nepal".INTERNATIONAL JOURNAL OF CLIMATOLOGY (2019). |
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