Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.4842 |
Changes and variability of precipitation and temperature in the Ganges-Brahmaputra-Meghna River Basin based on global high-resolution reanalyses | |
Khandu1,2; Awange, Joseph L.1,2,3; Kuhn, Michael1,2; Anyah, Richard4; Forootan, Ehsan5,6 | |
2017-03-30 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
![]() |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2017 |
卷号 | 37期号:4 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia; Brazil; USA; Germany; Wales |
英文摘要 | Previous studies suggest that climate change impacts significantly on the hydro-climatic processes within the Ganges-Brahmaputra-Meghna (GBM) River Basin (RB). This study examines the observed climate characteristics and potential strengths and limitations of three global high-resolution reanalyses and satellite remote-sensing products over the GBM RB for period 1980-2013 by (1) estimating trends and interannual variations of precipitation and temperature, and (2) isolating precipitation variations likely associated with El Nino Southern Oscillation (ENSO) and Indian Ocean Dipole (IOD). The surface temperature trends show widespread warming across the basin with a maximum increase of 0.6 degrees Cdecade(-1) over western Nepal and southern Tibet from 1980 to 2013. Rainfall changes from 1980 to 2013 indicate pronounced decline over high rainfall regions of northeast India, Bhutan, Nepal, and Bangladesh, especially from 1998 to 2013. Basin-wide averaged trends show rainfall decline of up to 39mmdecade(-1) in June-August in the Brahmaputra-Meghna RB from 1998 to 2013. Temperature variability based on Principal Component Analysis indicates that the first mode is associated with sea surface temperature (SST) warming in the Arabian Sea and the western tropical Pacific Ocean, while the second mode appears to be significantly correlated to SST anomalies in the western (eastern) tropical Indian (Pacific) Ocean. ENSO and IOD events are found to significantly influence rainfall variability contributing to about 10-20% (ENSO) and 8-10% (IOD) of the annual rainfall, mainly over Bhutan, Nepal, Bangladesh, and north-eastern India. Among the three reanalysis products: European Centre for Medium-Range Weather Forecasts (ECMWF) retrospective analysis (ERA-Interim), Modern-Era Retrospective Analysis for Research and Applications (MERRA), and Climate Forecast System Reanalysis (CFSR), ERA-Interim (and MERRA) agrees well with the observed precipitation (temperature) data sets while, CFSR shows the least skills in representing the spatio-temporal variations of precipitation and temperature. |
英文关键词 | Ganges-Brahmaputra-Meghna River Basin climate reanalysis satellite remote-sensing precipitation temperature |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000397497700034 |
WOS关键词 | SURFACE AIR-TEMPERATURE ; PASSIVE MICROWAVE ; INDIAN-OCEAN ; EAST-ASIA ; RAINFALL ; PRODUCTS ; ACCURACY ; CLIMATE ; DATASET ; PROJECT |
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/36621 |
专题 | 气候变化 |
作者单位 | 1.Curtin Univ, Western Australian Ctr Geodesy, Perth, WA, Australia; 2.Curtin Univ, Inst Geosci Res, Perth, WA, Australia; 3.Univ Fed Pernambuco, Dept Cartog Engn, Recife, PE, Brazil; 4.Univ Connecticut, Dept Nat Resources & Environm, Storrs, CT USA; 5.Univ Bonn, Inst Geodesy & Geoinformat, Bonn, Germany; 6.Cardiff Univ, Sch Earth & Ocean Sci, Cardiff, S Glam, Wales |
推荐引用方式 GB/T 7714 | Khandu,Awange, Joseph L.,Kuhn, Michael,et al. Changes and variability of precipitation and temperature in the Ganges-Brahmaputra-Meghna River Basin based on global high-resolution reanalyses[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2017,37(4). |
APA | Khandu,Awange, Joseph L.,Kuhn, Michael,Anyah, Richard,&Forootan, Ehsan.(2017).Changes and variability of precipitation and temperature in the Ganges-Brahmaputra-Meghna River Basin based on global high-resolution reanalyses.INTERNATIONAL JOURNAL OF CLIMATOLOGY,37(4). |
MLA | Khandu,et al."Changes and variability of precipitation and temperature in the Ganges-Brahmaputra-Meghna River Basin based on global high-resolution reanalyses".INTERNATIONAL JOURNAL OF CLIMATOLOGY 37.4(2017). |
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