On the relationship between meridional eddy transfer of angular momentum and meridional circulations in the earth's atmosphere

1954 ◽  
Vol 7 (1) ◽  
pp. 80-84 ◽  
Author(s):  
E. Palmén

2020 ◽  
Vol 6 (48) ◽  
pp. eabd1387
Author(s):  
Paolo A. Sossi ◽  
Antony D. Burnham ◽  
James Badro ◽  
Antonio Lanzirotti ◽  
Matt Newville ◽  
...  

Exchange between a magma ocean and vapor produced Earth’s earliest atmosphere. Its speciation depends on the oxygen fugacity (fO2) set by the Fe3+/Fe2+ ratio of the magma ocean at its surface. Here, we establish the relationship between fO2 and Fe3+/Fe2+ in quenched liquids of silicate Earth-like composition at 2173 K and 1 bar. Mantle-derived rocks have Fe3+/(Fe3++Fe2+) = 0.037 ± 0.005, at which the magma ocean defines an fO2 0.5 log units above the iron-wüstite buffer. At this fO2, the solubilities of H-C-N-O species in the magma ocean produce a CO-rich atmosphere. Cooling and condensation of H2O would have led to a prebiotic terrestrial atmosphere composed of CO2-N2, in proportions and at pressures akin to those observed on Venus. Present-day differences between Earth’s atmosphere and those of her planetary neighbors result from Earth’s heliocentric location and mass, which allowed geologically long-lived oceans, in-turn facilitating CO2 drawdown and, eventually, the development of life.



1975 ◽  
Vol 117 (10) ◽  
pp. 313-332 ◽  
Author(s):  
V.M. Smirnov






Author(s):  
Michael I. Budyko ◽  
Alexander B. Ronov ◽  
Alexander L. Yanshin


2017 ◽  
Vol 39 (3) ◽  
pp. 40-63
Author(s):  
L.V. Raychenko ◽  
G.V. Melnik




Author(s):  
A. NIKOLAYEV ◽  
◽  
A. M. Mebel ◽  
V. N. Azyazov ◽  
◽  
...  

This research is devoted to the problem of environmental pollution. The study of various pathways that reduce emissions of fuel combustion products into the Earth's atmosphere is still applicable today.



Author(s):  
E. L. Wolf

This is a physics textbook describing, at a college level, the physics and technology needed to provide sustainable long-term energy, past the era of fossil fuels. A summary is given of global power generation and consumption, with estimates of times until conventional fuels will deplete. Sustainable power sources, largely those coming from the Sun directly or indirectly, are described. As sustainable energy must preserve the Earth’s atmosphere and climate, key elements of these topics are included. Key energy technologies in this book include photovoltaics, wind turbines and the electric power grid, for which the underlying physics is developed. Nuclear fusion is described in the context of the Sun’s energy generation, in a brief description of tokamak fusion reactors, and also to introduce ideas of quantum physics needed for adequate treatment of photovoltaic devices. Energy flow in and out of the Earth’s atmosphere is discussed, including the role of greenhouse gas impurities arising from fossil fuel burning as trapping heat and raising the Earth’s temperature. Discussion is included of the Earth’s climatic history and future. Exercises are included for each chapter.



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