GSTDTAP  > 气候变化
DOI10.1007/s00382-016-3141-4
Atmospheric moisture budget during winter seasons in the western Himalayan region
Tiwari, Sarita1,2; Kar, Sarat C.1; Bhatla, R.2
2017-02-01
发表期刊CLIMATE DYNAMICS
ISSN0930-7575
EISSN1432-0894
出版年2017
卷号48
文章类型Article
语种英语
国家India
英文摘要

Winter precipitation in the western Himalayas occurs under the influence of western disturbances (WDs) that move in synoptic timescale from west to east across the Himalayan region. The main objective of the study is to examine the water vapor budget during life cycles of WDs using the high-resolution global climate forecast system reanalysis data. It is found that over western Kashmir, even in climatological mean, a westerly trough is seen in moisture flux. Precipitation exceeds evaporation over most of Jammu and Kashmir, Hindukush region and the region to the west in winter seasons. Large interannual variability is noticed in all components of the moisture budget in the region. In order to understand the mechanism of moisture transport and atmospheric moisture budget over study area during the life cycle of WDs, an EOF analysis has been carried out using geopotential height at 500 hPa. The first two leading modes represent eastward moving WDs. Composite analysis of moisture budget (both atmospheric and surface) has been made using the dates from the EOF analysis. It is found that large variations in moisture transport occur during different phases of the WDs. When a cyclonic circulation is around 72A degrees E, strong meridional moisture transport (from Arabian Sea) occurs and moisture convergence over western Himalayas enhances precipitation over the region. After the circulation moves further east, moisture convergence decreases and precipitation reduces. However, evaporation amount increases marginally due to clear sky conditions. During the life cycle of WDs, large variation in meridional transport of moisture flux is noticed as compared to zonal transport.


英文关键词Western disturbances Moisture budget EOF Himalayas Winter
领域气候变化
收录类别SCI-E
WOS记录号WOS:000394150500032
WOS关键词NORTHWEST INDIA ; WATER-BUDGET ; PRECIPITATION ; DISTURBANCES ; PREDICTION ; VARIABILITY ; STREAMFLOW ; SNOWMELT ; CLIMATE ; ENERGY
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/36182
专题气候变化
作者单位1.Natl Ctr Medium Range Weather Forecasting, Sect 62, A-50, Noida, India;
2.Banaras Hindu Univ, Varanasi, Uttar Pradesh, India
推荐引用方式
GB/T 7714
Tiwari, Sarita,Kar, Sarat C.,Bhatla, R.. Atmospheric moisture budget during winter seasons in the western Himalayan region[J]. CLIMATE DYNAMICS,2017,48.
APA Tiwari, Sarita,Kar, Sarat C.,&Bhatla, R..(2017).Atmospheric moisture budget during winter seasons in the western Himalayan region.CLIMATE DYNAMICS,48.
MLA Tiwari, Sarita,et al."Atmospheric moisture budget during winter seasons in the western Himalayan region".CLIMATE DYNAMICS 48(2017).
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Tiwari, Sarita]的文章
[Kar, Sarat C.]的文章
[Bhatla, R.]的文章
百度学术
百度学术中相似的文章
[Tiwari, Sarita]的文章
[Kar, Sarat C.]的文章
[Bhatla, R.]的文章
必应学术
必应学术中相似的文章
[Tiwari, Sarita]的文章
[Kar, Sarat C.]的文章
[Bhatla, R.]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

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。