GRACE-based dynamic assessment of hydrological drought trigger thresholds induced by meteorological drought and possible driving mechanisms

环境科学 降水 预警系统 气候变化 气候学 水资源 中国 干旱胁迫 气象学 生态学 地理 计算机科学 地质学 农学 生物 电信 考古
作者
Zhiming Han,Shengzhi Huang,Jian Peng,Jianfeng Li,Guoyong Leng,Qiang Huang,Jing Zhao,Fang Yang,Panxing He,Xiaoyu Meng,Zhi Li
出处
期刊:Remote Sensing of Environment [Elsevier BV]
卷期号:298: 113831-113831 被引量:9
标识
DOI:10.1016/j.rse.2023.113831
摘要

Determining the threshold at which meteorological drought triggers hydrological drought is critical for early warning and proper mitigation of drought. However, drought trigger thresholds are difficult to determine owing to the nonlinearity between meteorological and hydrological drought, and their dynamics have not been explored. To this end, we introduce a precipitation-driven drought trigger threshold framework. This framework considers the multiscale characteristics of cumulative precipitation anomalies and incorporates the drought severity index of terrestrial water storage anomalies to characterize hydrological drought. The dynamics of trigger thresholds over time and the main drivers of these variations are further explored over China. The results show that hydrological drought is more sensitive to meteorological drought in south China, with some regions showing weak or negative correlations mainly determined by the differences between climate change and human activities. The risk of drought outbreak in the central, northeastern and southern regions of China is high, with trigger thresholds showing a dynamic decreasing trend over time (corresponding to lower cumulative precipitation anomalies), indicating weakened resistance to meteorological drought. Rising temperature is the main factor affecting dynamic changes in the trigger threshold. The drought trigger threshold framework proposed in this study is also applicable for assessments in other regions around the world. This study provides valuable insights and new approaches for understanding the mechanisms of hydrological drought formation. Furthermore, these results are expected to severe as a scientific basis for government departments to reduce water supply stress on human and natural systems and to develop adaptive management strategies.
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
bkagyin应助DD采纳,获得10
2秒前
2秒前
3秒前
科研冰山完成签到,获得积分10
3秒前
rong发布了新的文献求助10
3秒前
Hello应助欣慰曼彤采纳,获得10
4秒前
完美世界应助zxxzxx采纳,获得10
4秒前
传奇3应助miao采纳,获得10
5秒前
5秒前
5秒前
bulabulabu完成签到,获得积分10
5秒前
fangliu发布了新的文献求助10
5秒前
6秒前
jiujiujiujiu完成签到,获得积分10
7秒前
LIANG发布了新的文献求助10
8秒前
8秒前
8秒前
小任性发布了新的文献求助10
8秒前
饼饼发布了新的文献求助10
9秒前
10秒前
11秒前
11秒前
绝情继父发布了新的文献求助10
12秒前
张自信发布了新的文献求助10
13秒前
13秒前
champ发布了新的文献求助10
14秒前
14秒前
zxxzxx发布了新的文献求助10
14秒前
我想@科研发布了新的文献求助10
15秒前
paopao完成签到,获得积分10
15秒前
yh发布了新的文献求助10
15秒前
哈尼发布了新的文献求助10
16秒前
16秒前
潘贤铖完成签到 ,获得积分10
16秒前
17秒前
内向代珊完成签到,获得积分10
17秒前
无花果应助whisper采纳,获得10
17秒前
星辰大海应助LIANG采纳,获得10
18秒前
快乐难敌发布了新的文献求助10
18秒前
子爵木完成签到 ,获得积分10
19秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 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
A Preliminary Study on Correlation Between Independent Components of Facial Thermal Images and Subjective Assessment of Chronic Stress 500
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 360
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 3971395
求助须知:如何正确求助?哪些是违规求助? 3516110
关于积分的说明 11180848
捐赠科研通 3251238
什么是DOI,文献DOI怎么找? 1795760
邀请新用户注册赠送积分活动 876012
科研通“疑难数据库(出版商)”最低求助积分说明 805228