these events have taken a very long time to occur. For nearly a million years carbon dioxide levels in the atmosphere have been, on average, 280 ppm, not rising above 300 ppm or dipping below 160 ppm. In the past, global warming has happened gradually over thous...
Carbon disulfide and carbon dioxide acts as resources for functional polymers. It is also useful for the synthesis of heterocyclic compounds. View all Usage Carbon disulfide is used in spectrophotometry, high performance liquid chromatography and environmental testing. Usage Carbon disulfide is used in...
which had not been seen in previous attempts to simulate the Early Eocene using similar amounts of carbon dioxide, is likely due to an improved representation of cloud processes in the climate model they used, the Community Earth System Model version 1.2, or CESM1.2. ...
The level of carbon dioxide in theatmosphere has increased by some12% in the last 100 years, mainly becauseof extensive burning of fossilfuels and the destruction of largeareas of rain forest. This has beenpostulated as the main cause of theaverage increase of 0.5°C in globaltemperatures over...
They built a 17-meter-wide plastic pipe octagons elevated about 30 centimeters above the tops of plants within standard rice fields, with sensors and monitors measuring how much carbon dioxide is released out of the pipes designed to raise the carbon concentration to a desired experimental level....
25、A spokesperson commented that levels ofcarbon dioxidewere very high.(发言人称二氧化碳的含量很高。) 26、The emission of gases such ascarbon dioxideshould be stabilized at their present level.(二氧化碳之类气体的排放应该被控制在目前的水平上。) ...
Carbon dioxide (CO 2 ) is considered a trace gas in the atmosphere because it is much less abundant than oxygen or nitrogen. However, this trace gas plays a vital role in sustaining life on Earth and in controlling the Earth's climate by trapping heat in the atmosphere. ...
D The atmospheric level of carbon dioxide (CO2)-a gas that is great at trapping heat, contributing to climate change-is almost double what it was prior to the Industrial Revolution. This presents a challenge to researchers attempting to design artificial trees or other methods of capturing(捕获...
TOKYO, May 31 (Xinhua) -- The average atmospheric carbon dioxide concentration level hit record high in Japan in 2016, the Japan Meteorological Agency (JMA) said on Wednesday. According to a report released by the JMA, which observes surface concentrations of carbon dioxide at three stations in...
Natural climate solutions (NCS) are recognized as an important tool for governments to reduce greenhouse gas emissions and remove atmospheric carbon dioxide. Using California as a globally relevant reference, we evaluate the magnitude of biological climate mitigation potential from NCS starting in 2020 ...