Options
Spatiotemporal characteristics and potential drivers of global compound dry-wet events
Publikationstyp
Journal Article
Date Issued
2027-07-15
Sprache
English
Author(s)
Volume
122
Article Number
108619
Citation
Environmental Impact Assessment Review 122: 108619 (2026)
Publisher DOI
Scopus ID
Publisher
Elsevier
Compound dry-to-wet events (CDWEs), marked by rapid transitions between dry and wet episodes, pose growing socio-economic and environmental challenges. A clearer understanding of their spatial distribution, temporal evolution, and climatic drivers is essential for improving predictive capabilities and risk management strategies. This study presents a global assessment of sub-seasonal CDWEs from 1985 to 2020 using three reanalysis datasets. CDWE hotspots are primarily identified in northern North America, northern India, central Africa, and Northeast Asia, with particularly short dry-to-wet transition intervals (within 10 days) in northern North America and Northeast Asia. Temporal analysis reveals increasing CDWE frequency in regions such as Amazonia, central Africa, and the Black Sea area, whereas no statistically significant trend in the CDWE time interval is detected at any land grid cell. The El Niño-Southern Oscillation (ENSO) is statistically associated with CDWE probability in tropical regions, with El Niño corresponding to higher likelihood over northern South America and Indonesia, and La Niña over central South America. These findings highlight the need to enhance prediction of such compound events to better cope with their increasing frequency and interconnected impacts.
Subjects
Compound events
Dry event
ENSO
Extreme precipitation event
Time interval
DDC Class
600: Technology