Long-term homogeneity and trend analysis of seasonality and extreme rainfall under the influence of climate change in Johor River basin, Malaysia

Natural Hazards, Journal Year: 2023, Volume and Issue: 117(2), P. 1813 - 1845

Published: April 7, 2023

Language: Английский

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Temporal and Spatial Variations of Extreme Climate Events in Northwestern China from 1960 to 2020

Sustainability, Journal Year: 2023, Volume and Issue: 15(20), P. 14882 - 14882

Published: Oct. 15, 2023

In the context of global warming, frequency and intensity extreme weather climate events have been increasing. Characterized by scarce water resources fragile ecosystems, Northwest China has experienced a shift since 1980s. this study, spatial temporal patterns changes in indices extremes, based on daily maximum minimum temperature precipitation at 172 meteorological stations China, were analyzed for period 1960–2020. A total 26 divided into two categories, 16 10 indices, used. Analysis these revealed general warming trend region, which consistent with warming. The regional occurrence summer days, tropical nights, growing season length, warm spell duration index increased 0.22, 0.14, 0.29, 0.73, 0.46, 0.11 days/decade, respectively. Over same period, frost icing cool cold decreased −0.38, −0.21, −0.93, −0.44, −0.13 decreasing trends extremes greater than increasing extremes. Additionally, many regions several indices. annual wet-day 5.3 mm/decade. Increasing also evident simple index, heavy very wet extremely days. Consecutive dry days −1.5 while no significant change was observed consecutive contrast to remarkable consistency exhibited large expected variability. Most showed western region eastern part China. These results indicate transition from cold–dry warm–wet Northwestern Our findings suggest that is experiencing more events, could consequently impact hydrological processes, ecological human health. observations increase our understanding interactions between variability, conducive improving disaster prevention.

Language: Английский

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Scale dependence of forest fragmentation and its climate sensitivity in a semi-arid mountain: Comparing Landsat, Sentinel and Google Earth data

Geography and sustainability, Journal Year: 2023, Volume and Issue: 5(2), P. 200 - 210

Published: Dec. 19, 2023

Landscape fragmentation is generally viewed as an indicator of environmental stresses or risks, but the intensity assessment also depends on scale data and definition spatial unit. This study aimed to explore scale-dependence forest along a moisture gradient in Yinshan Mountain North China, estimate sensitivity this semi-arid landscape. We developed automatic classification algorithm using simple linear iterative clustering (SLIC) Gaussian mixture model (GMM), extracted tree canopy patches from Google Earth images (GEI), with accuracy 89.2% area. Then we convert category according that density greater than 10%, compared it categories global land use datasets, FROM-GLC10 GlobeLand30, resolutions 10 m 30 m, respectively. found GlobeLand30 datasets underestimated area by 16.88% 21.06%, respectively; ratio open (OF, 10% < coverage 40%) closed (CF, > areas part was 2:1. The underestimations concentrated warmer drier occupied mostly large OFs severely fragmented canopies. Fragmentation canopies positively correlated spring temperature while negatively summer precipitation terrain slope. When less 300 mm higher 4 °C, rose drastically, percentage kept stable. Our suggested configuration, e.g., sparseness, more sensitive drought stress percentage. highlights importance resolution proper measurements for patterns interpretation, which base reliable ecosystem predictions regard future climate scenarios.

Language: Английский

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Health variability based on SPI and estimating median and mean health indices in watersheds and townships of Kermanshah Province, Iran

Environment Development and Sustainability, Journal Year: 2024, Volume and Issue: unknown

Published: April 18, 2024

Language: Английский

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Comprehensive evaluation of extreme hydrometeorological events coincidence and their interrelationships in the Hanjiang River Basin, China

Journal of Hydrology, Journal Year: 2024, Volume and Issue: 638, P. 131506 - 131506

Published: June 14, 2024

Language: Английский

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