تقرير
3D simulations of the Archean Earth including photochemical haze profiles
| العنوان: | 3D simulations of the Archean Earth including photochemical haze profiles |
|---|---|
| المؤلفون: | Mak, M. T., Mayne, N. J., Sergeev, D. E., Manners, J., Eager-Nash, J. K., Arney, G., Hebrard, E., Kohary, K. |
| سنة النشر: | 2023 |
| المجموعة: | Astrophysics Physics (Other) |
| مصطلحات موضوعية: | Astrophysics - Earth and Planetary Astrophysics, Physics - Atmospheric and Oceanic Physics |
| الوصف: | We present results from 3D simulations of the Archean Earth including a prescribed (non-interactive) spherical haze generated through a 1D photochemical model. Our simulations suggest that a thin haze layer, formed when CH4/CO2 = 0.1, leads to global warming of ~10.6 K due to the change of water vapour and cloud feedback, compared to the simulation without any haze. However, a thicker haze layer, formed when CH4/CO2 > 0.1, leads to global cooling of up to ~65 K as the scattering and absorption of shortwave radiation from the haze reduces the radiation from reaching the planetary surface. A thermal inversion is formed with a lower tropopause as the CH4/CO2 ratio increases. The haze reaches an optical threshold thickness when CH4/CO2 ~ 0.175 beyond which the atmospheric structure and the global surface temperature do not vary much. Comment: 30 pages, 22 figures, Accepted in Journal of Geophysical Research: Atmospheres |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1029/2023JD039343 |
| URL الوصول: | http://arxiv.org/abs/2310.06818 |
| رقم الأكسشن: | edsarx.2310.06818 |
| قاعدة البيانات: | arXiv |
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