This is the first time in human history that we have seen these levels of carbon dioxide in Earth's atmosphere, but it is probably worse than that. To find a time period where carbon dioxide levels were this high, we need to trace back all the way to the Pliocene...
(Phys.org) —For the first time in human history, concentrations of the greenhouse gas carbon dioxide (CO2) could rise above 400 parts per million (ppm) for sustained lengths of time throughout much of the Northern Hemisphere as soon as May 2013. To provide a resource for understanding the...
Carbon dioxide levels increase through the Triassic to approx. 3,000 ppmV, a level maintained through the Jurassic period. Levels lowered through the Cretaceous, dropping to less than 1,000 ppmV prior to the Cretaceous-Tertiary boundary. Relatively low levels persisted throughout the Cenozoic, with...
Carbon dioxide sink in the Arctic Ocean from cross-shelf transport of dense Barents Sea water Andreas Rogge, Markus Janout, Nadezhda Loginova, Emilia Trudnowska, Cora Hörstmann, Claudia Wekerle, Laurent Oziel, Vibe Schourup-Kristensen, Eugenio Ruiz-Castillo, Kirstin Schulz, Vasil...
Methyldiethanolamine-based Sulfinol (Sulfinol-M) was used later to enhance hydrogen sulfide removal and to allow for selective rejection of carbon dioxide in the absorber. To achieve the lowest possible hydrogen sulfide content in the treated gas, the Super-SCOT configuration was introduced. In this...
Carbon dioxide, which constitutes approximately 0.03% by volume of the atmosphere, is found also in all natural waters. Carbon is a constituent of coal, petroleum, and natural gas, and of many minerals. The formation of σ- and π- bonds between carbon atoms and with other atoms (e.g.,...
The air bubbles trapped in the Antarctic Vostok and EPICA Dome C ice cores provide composite records of levels of atmospheric carbon dioxide and methane covering the past 650,000 years. Now the record of atmospheric carbon dioxide and methane concentrati
All plants depend on carbon dioxide and water for their survival, making their food by the process of photosynthesis. Carbon dioxide is found in abun?dance in the atmospheres of many other planets and their moons throughout the solar system. ...
21 August 2015 Carbon dioxide level and form of soil nitrogen regulate assimilation of atmospheric ammonia in young trees Lucas C. R. Silva1, Alveiro Salamanca-Jimenez1,2, Timothy A. Doane1 & William R. Horwath1 The influence of carbon dioxide (CO2) and soil fertility on...
Hydrogenation, carboxylation, carbonation, carbon dioxide dissolution, and hydration emerged as winners (Fig. 1). Figure 1 E5R logo (left) and special collection theme figure (right) showing where the reactions likely occur during Earth’s deep carbon cycle. Table 1 The eight reaction classes on...