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A greening world enhances the surface-air temperature difference.

Huihui Feng1, Bin Zou1

  • 1School of Geosciences and Info-Physics, Central South University, Changsha 410083, China; Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring of Chinese Ministry of Education, Changsha 410083, China.

The Science of the Total Environment
|December 23, 2018
PubMed
Summary
This summary is machine-generated.

Global surface-air temperature difference (Ts-Ta) decreased by -0.140 K from 2001-2016, with vegetation changes contributing significantly. Greening land altered atmospheric properties, impacting Ts-Ta trends.

Keywords:
Climate and environment changeContributionGlobalSurface-air temperature differenceVegetation

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Area of Science:

  • Climate Science
  • Environmental Science
  • Remote Sensing

Background:

  • Surface-air temperature difference (Ts-Ta) is a key indicator for climate and environmental change.
  • Vegetation influences temperature by altering surface properties, but the extent of this impact is not fully understood.

Purpose of the Study:

  • To investigate global Ts-Ta patterns and quantify the impact of vegetation changes on these patterns.
  • To understand the physical mechanisms through which vegetation affects Ts-Ta.

Main Methods:

  • Trend analysis
  • Correlation analysis
  • Trajectory-based methods

Main Results:

  • Global Ts-Ta decreased by -0.140 K between 2001 and 2016.
  • Vegetation changes, particularly greening, played a significant role, accounting for 11.58% of the total Ts-Ta decrease.
  • Vegetation primarily influenced Ts-Ta by altering atmospheric properties, such as reducing albedo and enhancing water vapor, rather than surface properties.

Conclusions:

  • Vegetation change is a significant driver of global Ts-Ta trends.
  • Understanding these vegetation-driven changes is crucial for climate adaptation and environmental management.
  • The study highlights the complex interplay between vegetation dynamics and temperature regulation.