GRACE satellite-based drought index indicating increased impact of drought over major basins in China during 2002–2017

气候学 环境科学 卫星 索引(排版) 中国 地质学 地理 工程类 计算机科学 万维网 航空航天工程 考古
作者
Xianfeng Liu,Xiaoming Feng,Philippe Ciais,Bojie Fu,Baoyi Hu,Zhangli Sun
出处
期刊:Agricultural and Forest Meteorology [Elsevier BV]
卷期号:291: 108057-108057 被引量:72
标识
DOI:10.1016/j.agrformet.2020.108057
摘要

The frequency of recurrence of drought has major societal, economical, and environmental impacts. However, our ability to capture drought conditions accurately are limited due to the uncertainties in current drought indices. In the present study, we proposed a Gravity Recovery and Climate Experiment (GRACE) total water storage (TWS) based drought severity index (DSI) using the detrended GRACE-TWS time series, to eliminate the effect of non-climatic factors on drought estimation and reflect true drought conditions. Based on the improved GRACE-DSI, we characterized the drought conditions over major basins in China during 2002–2017. Our results indicate that the improved GRACE-DSI can reasonably capture the drought process compared to existing non-detrended GRACE-based drought indices. The observed behavior of GRACE-DSI time series agrees reasonably well with the Palmer drought severity index, standardized precipitation index, and standardized runoff index, although differences exist due to intrinsic differences in the indicators of drought. Spatially, the Yellow River Basin, Huai River Basin, Hai River Basin, Southwest River Basin, and Continental River Basin share a similar pattern with droughts prevailing after 2013, and with both increases in duration and severity of the drought episodes. Moreover, pixel-based drought assessment also suggests an increasing trend in drought frequency in most basins in China during the GRACE era, with a prominent drought event in the Southwest River Basin beginning in April 2015 and ending in May 2016, with a severity of -25.38 and affecting 39.47 % of the total basin area. Our analyses demonstrate that the proposed GRACE-DSI can serve as a useful tool for integrated drought monitoring and provide a better understanding of drought conditions in major basins in China during 2002–2017.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
1秒前
1秒前
64658应助清秀的怀蕊采纳,获得10
1秒前
Solitude_Z完成签到,获得积分10
2秒前
七七完成签到,获得积分10
2秒前
今后应助hammer采纳,获得10
2秒前
科研助手6应助甜甜的觅夏采纳,获得10
3秒前
XLX完成签到,获得积分10
3秒前
gxm发布了新的文献求助10
3秒前
华仔应助xzDoctor采纳,获得10
3秒前
CodeCraft应助小唐采纳,获得10
4秒前
健壮的便当完成签到,获得积分10
4秒前
4秒前
4秒前
yankai完成签到,获得积分10
4秒前
177发布了新的文献求助10
4秒前
5秒前
5秒前
森森发布了新的文献求助30
6秒前
看看不要钱完成签到,获得积分10
6秒前
羊白玉完成签到 ,获得积分10
6秒前
小二郎应助繁荣的行天采纳,获得10
6秒前
Felix发布了新的文献求助30
6秒前
微醺小王发布了新的文献求助10
7秒前
Engen完成签到,获得积分10
7秒前
yar应助肖敏采纳,获得10
7秒前
7秒前
7秒前
葫芦娃完成签到,获得积分10
7秒前
8秒前
呆萌的莲完成签到,获得积分10
8秒前
jj发布了新的文献求助10
8秒前
研友_VZG7GZ应助小屁孩采纳,获得10
8秒前
执着冬亦发布了新的文献求助30
8秒前
充电宝应助xingxingxing采纳,获得10
8秒前
hammer完成签到,获得积分10
9秒前
bkagyin应助莉莉子采纳,获得10
9秒前
东方耀发布了新的文献求助10
9秒前
CodeCraft应助阔达的语海采纳,获得10
9秒前
lili完成签到 ,获得积分10
10秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Technical Brochure TB 814: LPIT applications in HV gas insulated switchgear 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Picture Books with Same-sex Parented Families: Unintentional Censorship 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3969383
求助须知:如何正确求助?哪些是违规求助? 3514211
关于积分的说明 11172730
捐赠科研通 3249476
什么是DOI,文献DOI怎么找? 1794909
邀请新用户注册赠送积分活动 875441
科研通“疑难数据库(出版商)”最低求助积分说明 804827