Open AccessPhase shift between changes in global temperature and atmospheric Co2 content under the external emissions of greenhouse gases into the atmosphere
Author(s) -
K. E. Muryshev,
А. В. Елисеев,
S. N. Denisov,
M. M. Arzhanov,
A. V. Timazhev
Publication year - 2019
Publication title -
izvestiâ akademii nauk sssr. fizika atmosfery i okeana
Language(s) - English
Resource type - Journals
ISSN - 0002-3515
DOI - 10.31857/s0002-351555311-19
Subject(s) - radiative forcing , atmospheric sciences , atmosphere (unit) , greenhouse gas , forcing (mathematics) , environmental science , carbon dioxide , greenhouse effect , methane , global temperature , carbon dioxide in earth's atmosphere , global warming , carbon cycle , atmospheric temperature , lag , climatology , atmospheric model , co2 content , climate change , chemistry , meteorology , physics , geology , ecology , computer network , oceanography , organic chemistry , ecosystem , computer science , biology
The phase shift between changes in the global surface temperature Tg and atmospheric CO2 content has been shown earlier not to characterize causal relationships in the Earth system in the general case. Specifically, the sign of this phase shift under nongreenhouse radiative forcing changes depends on the time scale of this forcing. This paper analyzes the phase shift between changes in the global surface temperature Tg and the atmospheric CO2 content qCO2 under synchronous external emissions of carbon dioxide and methane into the atmosphere on the basis of numerical experiments with the IAP RAS climatic model and a conceptual climate model with carbon cycle. For a sufficiently large time scale of external forcing, the changes in qCO2 lag relative to the corresponding changes in Tg.