Earth greening mitigates hot temperature extremes despite the effect being dampened by rising CO2

Wu，Jie1,2,3; Feng，Yu1,3,4; Li，Laurent Z.X.5; Ciais，Philippe4; Piao，Shilong6; Chen，Anping7; Zeng，Zhenzhong1,3

2024-01-19

10.1016/j.oneear.2023.12.003

One Earth   影响因子和分区

2590-3330

2590-3322

The escalating threat of climate-induced hot temperature extremes poses a global sustainability challenge that impacts ecosystems and public health. Although the enhancement of leaf area index (LAI; also known as Earth greening) is known to cool global mean air temperature, knowledge gaps exist regarding its mitigation effect on hot temperature extremes, particularly under rising CO during the past three decades. Our study, combining coupled land-atmosphere climate model (IPSL-CM) simulations with global observations, suggests that Earth greening has reduced the hot day frequency index (TX90p) and warm night frequency index (TN90p) by −0.26 ± 0.10 days decade and −0.38 ± 0.11 days decade, respectively, offsetting 4.7% and 5.8% of observed trends globally. However, rising CO levels partly diminished these mitigation effects, without which Earth greening might have offset 7.7% of TX90p and 10.0% of TN90p. Our findings illuminate Earth greening's potential to mitigate hot temperature extremes, offering a pathway toward more resilient and sustainable climate adaptation and mitigation.

climate change mitigation Earth system model elevated CO2 concentration evapotranspiration extreme climate leaf area index

SCI ; SSCI

英语

第一 ; 通讯

2-s2.0-85182704383

Scopus

1.Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control,School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Department of Geoscience and Natural Resource Management,University of Copenhagen,Copenhagen,Denmark
3.Ningbo Institute of Digital Twin,Eastern Institute for Advanced Study,Ningbo,315200,China
4.Laboratoire des Sciences du Climat et de l'Environnement,UMR 1572 CEA-CNRS-UVSQ,Gif-sur-Yvette,91191,France
5.Laboratoire de Météorologie Dynamique,Centre National de la Recherche Scientifique,Sorbonne Université,Ecole Normale Supérieure,Ecole Polytechnique,Paris,France
6.Sino-French Institute for Earth System Science,College of Urban and Environmental Sciences,Peking University,Beijing,China
7.Department of Biology,Colorado State University,Fort Collins,United States

Wu，Jie,Feng，Yu,Li，Laurent Z.X.,et al. Earth greening mitigates hot temperature extremes despite the effect being dampened by rising CO2[J]. One Earth,2024,7(1):100-109.

Wu，Jie.,Feng，Yu.,Li，Laurent Z.X..,Ciais，Philippe.,Piao，Shilong.,...&Zeng，Zhenzhong.(2024).Earth greening mitigates hot temperature extremes despite the effect being dampened by rising CO2.One Earth,7(1),100-109.

Wu，Jie,et al."Earth greening mitigates hot temperature extremes despite the effect being dampened by rising CO2".One Earth 7.1(2024):100-109.