(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...
Atmospheric carbon dioxide plays a significant role in keeping the Earth at a stable temperature when it occurs naturally. Study the history and environmental effects of atmospheric carbon dioxide and learn about the greenhouse effect, natural changes, and anthropogenic carbon dioxide. Carbon Dioxide ...
While it’s true that Earth’s temperatures and carbon dioxide levels have always fluctuated, the reality is that humans’ greenhouse emissions since the industrial revolution have put us in uncharted territory. Written by Dr. Benjamin Henley and Assoc Prof Nerilie Abrams. ...
However, the analysis of 2.75-billion-year (Gyr)-oldpalaeosols—soil samples preserved in the geologic record—have recently provided an upper constraint on atmospheric carbon dioxide levels well below that required in most climate models to prevent the Earth's surface from freezing. This finding ...
题目3)研究表明大气中的二氧化碳的含量(atmospheric carbon dioxide levels)与全球温度密切相关。(correlate) 相关知识点: 试题来源: 解析 The research shows that atmospheric carbon dioxide levels are closely correlated with global temperatures.反馈 收藏
Michael J. RycroftNature Publishing Group UKNatureRycroft, M. J.: 1982, ‘Analysing Atmospheric Carbon Dioxide Levels’, Nature 295 , 190–191.Rycroft MJ (1982) Analysing atmospheric carbon dioxide levels. Nature (London) 295: 190–191
It marks five consecutive years of CO2 increases of at least 2 parts per million, an unprecedented rate of growth
Rising levels of carbon dioxide in the atmosphere are a major cause of climate change,and now a new study has confirmed that atmospheric CO2 is also affecting the ocean chemistry and potentially harming sea life.Montana State University scientist Robert Dore has been researching the water in the ...
A common message in use to convey the seriousness of climate change to the public is: "Carbon dioxide levels are higher today than they have been for the past one million years!" This new study by Brian Schubert (University of Louisiana at Lafayette) and
The alkenone–pCO2 methodology has been used to reconstruct the partial pressure of ancient atmospheric carbon dioxide (pCO2) for the past 45 million years of Earth's history (Middle Eocene to Pleistocene epochs). The present long-term CO2 record is a composite of data from multiple ocean local...