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The global spatiotemporal heterogeneity of land surface-air temperature difference and its influencing factors.
- Source :
-
The Science of the total environment [Sci Total Environ] 2022 Sep 10; Vol. 838 (Pt 2), pp. 156214. Date of Electronic Publication: 2022 May 23. - Publication Year :
- 2022
-
Abstract
- The water and energy in the land surface and lower atmosphere have a strong coupling relationship. Apart from the land surface temperature (Ts) and air temperature (Ta), the land surface-air temperature difference (Ts-Ta) is also an essential parameter reflecting the coupling process. However, the global spatiotemporal variations and influencing factors of Ts-Ta remain not well explored. Here, ERA5-land reanalysis data, GIMMS NDVI data, and elevation data were used to analyze the global spatiotemporal heterogeneity and influencing factors of Ts-Ta. It was found that annual mean Ts-Ta exhibited a decreasing trend from the equator to polar areas. And the annual Ts-Ta increased at 0.009 °C/10a from 1981 to 2020. The variations of global net radiation mainly determined the spatiotemporal heterogeneity of global Ts-Ta. The different properties of the land surface and near-surface atmosphere were the main factors affecting the Ts-Ta, including soil moisture, vegetation, snow cover, and the water vapor content in the atmosphere. In addition, Ts and Ta also affected each other. These findings are conducive to a better understanding of the land-atmosphere coupling, and it is of great significance to take better measures to adapt the global climate change.<br />Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.<br /> (Copyright © 2022 Elsevier B.V. All rights reserved.)
- Subjects :
- Seasons
Temperature
Climate Change
Soil
Subjects
Details
- Language :
- English
- ISSN :
- 1879-1026
- Volume :
- 838
- Issue :
- Pt 2
- Database :
- MEDLINE
- Journal :
- The Science of the total environment
- Publication Type :
- Academic Journal
- Accession number :
- 35618123
- Full Text :
- https://doi.org/10.1016/j.scitotenv.2022.156214