Unveiling the dynamics of sequential extreme precipitation-heatwave compounds in China

npj Climate and Atmospheric Science, Journal Year: 2024, Volume and Issue: 7(1)

Published: March 11, 2024

Abstract Amidst the escalating impacts of global warming, occurrence and severity compound extreme weather events have risen significantly, presenting substantial threats to both lives property. Existing response strategies predominantly focus on individual events, often overlooking cumulative effects rising from their inherent complexity. To address this critical gap, we conducted a thorough examination sequential precipitation–heatwave (SEPHCE) in China 1975 2020, utilizing data 1929 meteorological stations. Our investigation revealed consistent rise frequency duration SEPHCE, with particularly notable surge since 1993. Furthermore, shorter interval disproportionately affected regions southwestern southeast coastal China. SEPHCE onset times exhibited advancement, endings were delayed, thereby intensifying overall trend. These findings underscore pressing need prioritize effective planning adaptation mitigate impact these event, while also addressing potential exacerbation inequality resulting climate change.

Language: Английский

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Characteristics of the Summer Regional Precipitation Events in the Middle and Lower Yangtze River Basin and Associated Mechanisms

Journal of Geophysical Research Atmospheres, Journal Year: 2025, Volume and Issue: 130(3)

Published: Jan. 29, 2025

Abstract Based on the hourly rainfall gauge data and ERA5 reanalysis of 1980–2022, this study reveals characteristics regional precipitation events (RPEs) over middle lower Yangtze River basin (MLYRB) in summer associated mechanisms. Results show that RPEs contribute more than 60% total most MLYRB dominate morning diurnal peak, interannual variation, phased increasing trend for MLYRB. The mainly occurring under two monsoonal types with shear line (Type1 Type2; 91.4%) landfalling tropical cyclone type (Type3; 8.6%) higher occurrence probability southern/northern eastern synoptic a clear sub‐seasonal variation development East Asian monsoon, Type1, Type2, Type3 concentratively June to early July (78%), late (62%) August (81%), respectively. Meanwhile, RPE amount Type1 Type2 (Type3) exhibits predominant (afternoon) peak. during 1980–1999 (2000–2022) is contributed by together). reduced coverage rate hours weakened 2000–2022 compared 1980–1999. This provides new scientific reference differences different types.

Language: Английский

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Comparison and evaluation of the performance of reanalysis datasets for compound extreme temperature and precipitation events in the Qilian Mountains

Atmospheric Research, Journal Year: 2024, Volume and Issue: 304, P. 107375 - 107375

Published: March 26, 2024

Language: Английский

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Interdecadal Variation of Springtime Compound Temperature‐Precipitation Extreme Events in China and Its Association With Atlantic Multidecadal Oscillation and Interdecadal Pacific Oscillation

Journal of Geophysical Research Atmospheres, Journal Year: 2025, Volume and Issue: 130(2)

Published: Jan. 13, 2025

Abstract The concurrent occurrence of temperature and precipitation extremes, known as compound temperature‐precipitation extreme events (CTPEEs), leads to more pronounced consequences for human society ecosystems than when these extremes occur separately. However, such have not been sufficiently studied, especially during boreal spring. Spring is an important transition season, which the CTPEEs plays a pivotal role in plant growth revival terrestrial ecosystems. This study investigates spatio‐temporal variation characteristics spring China, including warm‐dry, warm‐wet, cold‐dry, cold‐wet combinations. most frequently, followed by cold‐dry events. frequency associated with warm (cold) shows marked interdecadal increase (decrease) around mid‐to‐late 1990s. It found that change primarily determined extremes. shift coincides phase transitions Atlantic Multidecadal Oscillation (AMO) Interdecadal Pacific (IPO). After 1990s, configuration positive AMO negative IPO excited atmospheric wave trains over mid‐high latitudes, causing high‐pressure anticyclonic anomalies East Asia. less cloudiness, allowing downward solar radiation, enhances surface warming contributes warm‐dry warm‐wet above observations are confirmed Pacemaker experiments. results this highlight significant contribution internal climate variability changes at regional scale.

Language: Английский

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Emerging trans-Eurasian heatwave-drought train in a warming climate

Science Advances, Journal Year: 2025, Volume and Issue: 11(18)

Published: May 2, 2025

Since the late 20th century, an emerging atmospheric teleconnection pattern, trans-Eurasian heatwave-drought train, has intensified remarkably during summer, correlating with a surge in concurrent events from Eastern Europe to East Asia. Tree-ring proxies, spanning three centuries, reveal that recent intensity of this pattern is unprecedented historical records. In contrast, circumglobal teleconnection, which historically dominated continental-scale Eurasian heatwave occurrences, shown no discernible trend amid global warming. Consequently, signifies radical shift climatologies. The mechanism involves Rossby wave propagation linked warming sea surface temperatures Northwestern Atlantic and enhanced Sahel precipitation, both amplified recently by overlapping effects anthropogenic natural variability. Land-atmosphere interactions driven soil moisture deficits further regionally. Climate models predict forcings will continue strengthen throughout century.

Language: Английский

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Future projections of meteorological, agricultural and hydrological droughts in China using the emergent constraint

Journal of Hydrology Regional Studies, Journal Year: 2024, Volume and Issue: 53, P. 101767 - 101767

Published: April 4, 2024

China. In the context of global warming, droughts occur more frequently and have caused great losses to human society. Therefore, understanding potential changes in future under climate change is scientific significance for disaster prevention mitigation. this paper, combining with models from CMIP6, emergent constraint skill scoring methods are used analyze characteristics meteorological, agricultural hydrological China four socioeconomic scenarios mid late 21st century. mid-21st century, there frequent northern sustained intense likely than Additionally, relationship between meteorological drought agricultural/hydrological strengthened varying degrees future. From perspective extreme events, probabilities events long duration high severity increase significantly Northwest Central each scenarios. a higher scenario, suppressed but intensified These findings monitoring can provide basis developing measures respond drought.

Language: Английский

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Dynamic evolution characteristics and hazard assessment of compound drought/waterlogging and low temperature events for maize

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 946, P. 174427 - 174427

Published: July 3, 2024

Language: Английский

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Drivers of long-term changes in summer compound hot extremes in China: Climate change, urbanization, and vegetation greening

Atmospheric Research, Journal Year: 2024, Volume and Issue: 310, P. 107632 - 107632

Published: Aug. 13, 2024

Language: Английский

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Compound hot drought events in the Mei-yu region: Influences from polar and tropical regions

Science Bulletin, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 1, 2024

Language: Английский

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Increased exposure of rice to compound drought and hot extreme events during its growing seasons in China

Ecological Indicators, Journal Year: 2024, Volume and Issue: 167, P. 112735 - 112735

Published: Oct. 1, 2024

Language: Английский

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