Precipitation Extended Linear Scaling Method for Correcting GCM Precipitation and Its Evaluation and Implication in the Transboundary Jhelum River Basin
文献类型：期刊论文
| 作者 | Mahmood, Rashid1; Jia, Shaofeng1; Tripathi, Nitin Kumar3; Shrestha, Sangam2 |
| 刊名 | ATMOSPHERE
 |
| 出版日期 | 2018-05-01 |
| 卷号 | 9期号:5页码:15 |
| 关键词 | climate change downscaling precipitation extended linear scaling Jhelum basin Pakistan |
| ISSN号 | 2073-4433 |
| DOI | 10.3390/atmos9050160 |
| 通讯作者 | Mahmood, Rashid(rashi1254@gmail.com) ; Jia, Shaofeng(Jiasf@igsnrr.ac.cn) |
| 英文摘要 | In this study, a linear scaling method, precipitation extended linear scaling (PELS), is proposed to correct precipitation simulated by GCMs. In this method, monthly scaling factors were extended to daily scaling factors (DSFs) to improve the daily variation in precipitation. In addition, DSFs were also checked for outliers and smoothed with a smoothing filter to reduce the effect of noisy DSFs before correcting the GCM's precipitation. This method was evaluated using the observed precipitation of 21 climate stations and five GCMs in the Jhelum River basin, Pakistan and India, for the period of 1986-2000 and also compared with the original linear scaling (OLS) method. The evaluation results showed substantial improvement in the corrected GCM precipitation, especially in case of mean and standard deviation values. Although PELS and OLS showed comparable results, the overall performance of PELS was better than OLS. After Evaluation, PELS was applied to the future precipitation from five GCMs for the period of 2041-2070 under RCP8.5 and RCP2.6 in the Jhelum basin, and the future changes in precipitation were calculated with respect to 1971-2000. According to average all GCMs, annual precipitation was projected to decrease by 4% and 6% in the basin under RCP8.5 and RCP2.6, respectively. Although two seasons, spring and fall, showed some increasing precipitation, the monsoon season showed severe decrease in precipitation, with 22% (RCP8.5) and 29% (RCP2.6), and even more reduction in July and August, up to 34% (RCP8.5) and 36% (RCP2.6). This means if the climate of the world follows the RCP8.5 and RCP2.6, then there will be a severe reduction in precipitation in the Jhelum basin during peak months. It was also observed that decline in precipitation was higher under RCP2.6 than RCP8.5. |
| WOS关键词 | CLIMATE MODEL SIMULATIONS ; BIAS CORRECTION METHODS ; 3 MOUNTAINOUS BASINS ; DOWNSCALING TEMPERATURE ; HYDROLOGIC IMPACT ; UNITED-STATES ; SCENARIOS ; PAKISTAN ; CMIP5 ; RUNOFF |
| 资助项目 | Natural Sciences Fund of China[41471463] ; President's International Fellowship Initiative of CAS |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000435190300003 |
| 出版者 | MDPI |
| 资助机构 | Natural Sciences Fund of China ; President's International Fellowship Initiative of CAS |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/54700]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Mahmood, Rashid; Jia, Shaofeng |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Asian Inst Technol, Water Engn & Management, Pathum Thani 12120, Thailand 3.Asian Inst Technol, Remote Sensing & Geog Informat Syst, Pathum Thani 12120, Thailand |
| 推荐引用方式 GB/T 7714 | Mahmood, Rashid,Jia, Shaofeng,Tripathi, Nitin Kumar,et al. Precipitation Extended Linear Scaling Method for Correcting GCM Precipitation and Its Evaluation and Implication in the Transboundary Jhelum River Basin[J]. ATMOSPHERE,2018,9(5):15. |
| APA | Mahmood, Rashid,Jia, Shaofeng,Tripathi, Nitin Kumar,&Shrestha, Sangam.(2018).Precipitation Extended Linear Scaling Method for Correcting GCM Precipitation and Its Evaluation and Implication in the Transboundary Jhelum River Basin.ATMOSPHERE,9(5),15. |
| MLA | Mahmood, Rashid,et al."Precipitation Extended Linear Scaling Method for Correcting GCM Precipitation and Its Evaluation and Implication in the Transboundary Jhelum River Basin".ATMOSPHERE 9.5(2018):15. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
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。