Enhanced joint impact of western hemispheric precursors increases extreme El Niño frequency under greenhouse warming

Jo, Hyun-Su; Ham, Yoo-Geun

doi:10.1038/s41467-023-42115-7

Cited by 2 publications

(1 citation statement)

References 45 publications

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“…The impacts of the greenhouse effect, such as global climate warming [1], extreme oceanic events [2], precipitation extremes [3,4], and glacial retreat [5], are significantly affecting the future survival of humanity. The emissions of greenhouse gases such as carbon dioxide (CO 2 ) are detected as the primary drivers of global warming [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Comparison and Validation of Multiple Medium- and High-Resolution Land Cover Products in Southwest China

Ji,

Han,

Zhu

et al. 2024

Remote Sensing

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The rapid advancement of remote sensing technology has given rise to numerous global- and regional-scale medium- to high-resolution land cover (LC) datasets, making significant contributions to the exploration of worldwide environmental shifts and the sustainable governance of natural resources. Nonetheless, owing to the inherent uncertainties embedded within remote sensing imagery, LC datasets inevitably exhibit inaccuracies. In this study, a local accuracy assessment of LC datasets in Southwest China was conducted. The datasets utilized in our analysis include ESA WorldCover, CLCD, Esri Land Cover, CRLC, FROM-GLC10, GLC_FCS30, GlobeLand30, and SinoLC-1. This study employed a sampling approach that combines proportional allocation and stratified random sampling (SRS) to gather sample points and compute confusion matrices to validate eight LC products. The local accuracy of the eight LC maps differs significantly from the overall accuracy provided by the original authors in Southwest China. ESA WorldCover and CLCD demonstrate higher local accuracy than other products in Southwest China, with their overall accuracy (OA) values being 87.1% and 85.48%, respectively. Simultaneously, we computed the area for each LC map based on categories, quantifying uncertainty through the reporting of confidence intervals for both accuracy and area parameters. This study aims to validate and compare eight LC datasets and assess precision and area of diverse spatial resolution datasets for mapping and monitoring across Southwest China.

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Section: Introductionmentioning

confidence: 99%

Comparison and Validation of Multiple Medium- and High-Resolution Land Cover Products in Southwest China

Ji,

Han,

Zhu

et al. 2024

Remote Sensing

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Shifted relationship between the Pacific decadal oscillation and western North Pacific tropical cyclogenesis since the 1990s

Zhou,

Wu,

Wang

et al. 2024

Environ. Res. Lett.

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The Pacific Decadal Oscillation (PDO) and Pacific Meridional Mode (PMM) are prominent climate modes in the North Pacific with well-established impacts on tropical cyclone (TC) genesis in the western North Pacific (WNP) basin. While previous research has primarily focused on the roles of the PDO and PMM in regulating TC genesis through the modification of large-scale environmental factors, this study investigates the evolving influence of the PDO on WNP TC genesis since the 1950s. Remarkably, our analysis reveals a shift in the PDO-TC genesis relationship, transitioning from a significant negative correlation to a significant positive correlation since the 1990s. This shift is attributed to variations in the specific large-scale factors through which the PDO affects TC genesis. Furthermore, this study suggests that these changes appear to be linked to the PMM strengthening on the interdecadal timescale in recent decades. The linkage of the PMM strengthening to the PDO-related atmospheric circulation is further confirmed by the results of a 500-year pre-industrial numerical experiment, suggesting that the PMM strengthening may result from natural internal variability. The results underscore the non-stationary relationship between PDO and WNP TC genesis, with the PMM intensity probably influencing their relationship.

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Enhanced joint impact of western hemispheric precursors increases extreme El Niño frequency under greenhouse warming

Cited by 2 publications

References 45 publications

Comparison and Validation of Multiple Medium- and High-Resolution Land Cover Products in Southwest China

Comparison and Validation of Multiple Medium- and High-Resolution Land Cover Products in Southwest China

Shifted relationship between the Pacific decadal oscillation and western North Pacific tropical cyclogenesis since the 1990s

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