Estimates of Direct Radiative Forcing Impact on Surface Air Temperature Changes in the Modern Period
| Autor: | Maria A Aleshina, Vladimir Semenov |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010504 meteorology & atmospheric sciences
Atmospheric circulation Northern Hemisphere Atmospheric model Radiative forcing 010502 geochemistry & geophysics Atmospheric sciences 01 natural sciences Atmosphere Sea surface temperature Greenhouse gas Earth and Planetary Sciences (miscellaneous) General Earth and Planetary Sciences Sea ice concentration Geology 0105 earth and related environmental sciences |
| Zdroj: | Doklady Earth Sciences. 497:314-318 |
| ISSN: | 1531-8354 1028-334X |
| DOI: | 10.1134/s1028334x21040152 |
| Popis: | Estimates of the contribution of direct radiative forcing (DRF) to the surface air temperature trends over the Northern Hemisphere (NH) continents for the period 1979–2012 have been obtained based on an ensemble of numerical experiments with an atmospheric general circulation model using the prescribed historical sea surface temperature and sea ice concentration data with and without time-varying concentrations of greenhouse gases and aerosols in the atmosphere. The contribution of DRF to the simulated ensemble mean temperature variations over land in the NH in winter and summer is approximately 30% or 0.3°С and 0.2°С, respectively. The maximum warming associated with DRF was found, in particular, in winter and summer over the eastern part of the European territory of Russia. The results indicate that the response of atmosphere circulation to DRF may lead to a nonlinear DRF contribution to the temperature changes in the NH, in particular mitigating the temperature increase in the winter season. |
| Databáze: | OpenAIRE |
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