Increase Asymmetric Warming Rates Between Daytime and Nighttime Temperatures Over Global Land During Recent Decades

IF 4.6 1区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

Geophysical Research Letters Pub Date : 2024-12-23 DOI:10.1029/2024gl112832

Ge Liu, Yan Guo, Haoming Xia, Xingya Liu, Hongquan Song, Jia Yang, Yuqing Zhang

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引用次数: 0

Abstract

Diurnal asymmetric warming, a critical feature of climate change, significantly impacts water-carbon exchange in terrestrial ecosystems. This study analyzes the spatiotemporal characteristics and long-term trends of the global diurnal temperature range (DTR) from 1961 to 2022 using ensemble empirical mode decomposition (EEMD). Our results reveal a trend reversal in global averaged DTR around 1988, shifting from a decrease to an increase, affecting 47% of global land areas. Subsequent to the reversal, the most pronounced increases were observed in temperate regions. Seasonal analysis shows earlier reversals in spring and summer, with accelerated change rates following the reversal. Additionally, increased surface solar radiation from reduced cloud cover caused daily maximum (T_max) temperatures to warm faster than the minimum (T_min), leading to a reversal and intensified DTR. These complex patterns underscore the need for targeted climate policies and adaptation strategies to tackle global warming.

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来源期刊

Geophysical Research Letters 地学-地球科学综合

CiteScore

9.00

自引率

9.60%

发文量

1588

审稿时长

2.2 months

期刊介绍： Geophysical Research Letters (GRL) publishes high-impact, innovative, and timely research on major scientific advances in all the major geoscience disciplines. Papers are communications-length articles and should have broad and immediate implications in their discipline or across the geosciences. GRLmaintains the fastest turn-around of all high-impact publications in the geosciences and works closely with authors to ensure broad visibility of top papers.