With the launch of the James Webb Space Telescope (JWST), the study of exoplanetary atmospheres and their potential habitats has reached new heights. A group of researchers led by Dr. Assaf Hochman from the Institute of Earth Sciences at the Hebrew University of Jerusalem, Dr. Thaddeus D. Komacek from The University of Maryland, College Park, and Paolo De Luca from the Barcelona Supercomputing Center, investigated the effect of greenhouse gas supplements on temperate terrestrial exoplanets and Earth.
Their findings show a parallel relationship between CO2 supplement and intensified warming in non-irradiated regions, affecting global circulation patterns. The work is published in the journal Scientific reports.
Analyzing ExoCAM and CMIP6 model simulations, the research team discovered that increasing CO2 leads to high warming in areas protected from direct sunlight, ie, the night side and polar regions. These local changes in temperature can lead to large changes in the global circulation. Using a dynamical systems framework, researchers have gained further insights into the vertical dynamics of atmospheres.
The study also revealed that the introduction of a larger CO supplement2 to the atmosphere improves temporal stability near the surface but reduces stability at low pressures. Surprisingly, this observation is true for both Earth and TRAPPIST-1e, despite their different climatic conditions. Dr. Assaf Hochman, from the Hebrew University of Jerusalem, emphasized the importance of understanding the intricate connection between greenhouse gases and climate dynamics on Earth and potentially habitable exoplanets.
“These findings shed light on the complex interaction between greenhouse gases and climate dynamics, offering important insights into the habitability of exoplanets and the potential effects of greenhouse gas emissions on Earth’s climate,” said Dr. Assaf Hochman.
This study contributes to the expansion of knowledge in exoplanetary science and climate research. As the search for habitable exoplanets continues, the study of Earth’s climate dynamics has become essential to identifying and characterizing potentially habitable worlds beyond our solar system.
Assaf Hochman et al, Analogous response of temperate terrestrial exoplanets and Earth’s climate to greenhouse gas supplementation, Scientific reports (2023). DOI: 10.1038/s41598-023-38026-8
Given by the Hebrew University of Jerusalem
Citation: Supplementation of greenhouse gases increases warming and changes circulation patterns of Earth and Earth-like exoplanets (2023, July 13) retrieved on July 13, 2023 from https://phys.org/ news/2023-07-greenhouse-gas-supplement-circulation-patterns.html
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