Results 11 to 20 of about 912,350 (302)

A New Perspective on Drought Propagation: Causality

Geophysical Research Letters, 2022
AbstractThe essence of propagation from meteorological to hydrological drought is the cause‐effect relationship between precipitation and runoff. This study challenged the reliability of applying linear or non‐linear correlation (i.e., closeness/similarity, a non‐directional scalar) to study drought propagation (i.e., causality, a directional vector ...
Haiyun Shi, Yiyang Zhao, Suning Liu, Hejiang Cai, Zhaoqiang Zhou   +4 more
openaire   +2 more sources

Mechanisms of meteorological drought propagation to agricultural drought in China: insights from causality chain [PDF]

npj Natural Hazards
Previous studies have overlooked the nonlinear dependency of drought propagation, limiting our understanding of its mechanisms. By establishing a causality chain, this study identifies the nonlinear propagation pathways of meteorological drought to ...
Zhiwen You, Xunlai Sun, Huaiwei Sun, Lu Chen, Mengge Lu, Jie Xue, Xuan Ban, Baowei Yan, Ye Tuo, Hui Qin, Liping Zhang, Wenxin Zhang   +11 more
doaj   +2 more sources

Drought Propagation Patterns under Naturalized Condition Using Daily Hydrometeorological Data

Advances in Meteorology, 2018
Drought propagation pattern forms a basis for establishing drought monitoring and early warning. Due to its regional disparity, it is necessary and significant to investigate the pattern of drought propagation in a specific region.
Jianzhu Li, Yuangang Guo, Yixuan Wang, Shanlong Lu, Xu Chen   +4 more
doaj   +2 more sources

Formative drought rate to quantify propagation from meteorological to hydrological drought

Hydrological Processes
AbstractIn this study, we propose a probabilistic metric, the formative drought rate (FDR), to quantify drought propagation. It is the probability that a meteorological drought in precipitation forms a hydrological drought in streamflow. Drought events were identified based on the standardized precipitation index and streamflow drought index ...
Isilsu Yildirim, Hafzullah Aksoy, Markus Hrachowitz   +2 more
openaire   +4 more sources

Drought Spatial Extent and Dependence Increase During Drought Propagation From the Atmosphere to the Hydrosphere

Geophysical Research Letters
As droughts propagate both in time and space, their impacts increase because of changes in drought properties. Because temporal and spatial drought propagation are mostly studied separately, it is yet unknown how drought spatial extent and connectedness ...
Manuela I. Brunner, Corentin Chartier‐Rescan   +1 more
doaj   +2 more sources

Evaluation of Drought Propagation Characteristics and Influencing Factors in an Arid Region of Northeast Asia (ARNA)

Remote Sensing, 2022
The characteristics of the drought propagation from meteorological drought (MD) to agricultural drought (AD) differ in various climatic and underlying surface conditions.
Chong Li, Xuan Zhang, Guodong Yin, Yang Xu, Fanghua Hao   +4 more
doaj   +1 more source

The propagation dynamics and causes of hydrological drought in response to meteorological drought at seasonal timescale

Hydrology Research, 2021
<p>According to widely accepted definition of drought, meteorological and hydrological droughts originally develop from rainfalls and runoffs deficits, respectively. Runoffs deficit is mainly derived from rainfalls deficit. Therefore, hydrological drought is essentially propagated from meteorological drought, which is critical for ...
Lan Ma, Qiang Huang, Shengzhi Huang, Dengfeng Liu, Guoyong Leng, Lu Wang, Pei Li   +6 more
openaire   +2 more sources

Understanding meteorological, runoff, and agricultural drought propagation and their influencing factors in an ensemble of multiple datasets [PDF]

Hydrology and Earth System Sciences
Understanding the propagation of diverse drought conditions is essential for effective drought preparedness. This study evaluated the propagation of meteorological, runoff, and agricultural droughts across global land areas from 1958 to 2024 using an ...
Y. Liu, T. Hu, J. Yang, L. Yu
doaj   +1 more source

Multivariate Drought Monitoring, Propagation, and Projection Using Bias‐Corrected General Circulation Models

, 2023
Understanding how droughts are characterized, propagated, and projected, particularly multivariate droughts, is necessary to explain the variability and changes in drought characteristics.
Akintomide A. Akinsanola, Zhou, Wen, Wang, Xuan, Usman, Muhammad, Wen Zhou, Akinsanola, Akintomide A, Christopher E. Ndehedehe, Muhammad Usman, Oluwafemi E. Adeyeri, Xuan Wang, Adeyeri, Oluwafemi E, Laux, Patrick, Patrick Laux, Ndehedehe, Christopher E   +13 more
core   +1 more source

Drought propagation in space and time: the role of groundwater flows

Environmental Research Letters, 2022
Droughts cause large economic and social impacts all over the world. During drought, groundwater maintains streamflow and can help to mitigate impacts. It governs how drought propagates through the hydrological cycle.
J Hellwig, Y Liu, K Stahl, A Hartmann
doaj   +1 more source