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Latest Carbon dioxide in Earth's atmosphere Stories

Revised Estimates Show CO2 Levels Had Not Actually Surpassed 400ppm
2013-05-13 13:30:18

redOrbit Staff & Wire Reports — Your Universe Online Update (May 13 @ 1:30 p.m.) Revised statistics released by the National Oceanic and Atmospheric Administration (NOAA) on Monday have revealed that average carbon dioxide levels at the Mauna Loa Observatory had not surpassed the 400 parts per million (ppm) level as originally reported. Instead, the average weekly CO2 levels at the Hawaiian facility for May 9 was 399.89 ppm. The agency had initially reported on Friday that...

New Technique Draws Modern Lessons From Ancient Climate Shift
2013-04-23 10:31:22

Brett Smith for redOrbit.com - Your Universe Online A new technique has allowed a team of British and American scientists to connect temperatures to a massive shift in atmospheric carbon dioxide that occurred around 34 million years ago, according to a new study in the Proceedings of the National Academy of Sciences. Scientists have described this transformation in global climate as a shift from a warm, high-carbon dioxide "greenhouse" condition to a temperate, low-carbon dioxide state...

2013-04-22 09:59:09

A new global-scale modeling study that takes into account nitrogen — a key nutrient for plants — estimates that carbon emissions from human activities on land were 40 percent higher in the 1990s than in studies that did not account for nitrogen. Researchers at the University of Illinois at Urbana-Champaign and the University of Bristol Cabot Institute published their findings in the journal Global Change Biology. The findings will be a part of the upcoming Fifth Assessment...

Habitat Changes Caused Turtle Collapse 71 Million Years Ago
2013-03-15 15:16:49

Lee Rannals for redOrbit.com — Your Universe Online About 71-million-years ago, turtles disappeared from Alberta's Drumheller area, and scientists have been blaming dramatic climate change as the culprit. Now, a new theory published in the journal Palaeogeography, Palaeoclimatology, Palaeoecology suggests the real reason was because of habitat changes. Researchers at the University of Calgary studying ancient soil in Red Deer River valley say it was the loss of the wetlands that...

2013-03-08 01:17:15

After more than 10 years' work, scientists at the University of Granada have a developed a carbon gel that enables CO2 to be turned into hydrocarbons by electro-catalytic transformation. Researchers from the University of Granada (UGR) have developed a new material using doped carbon that allows low-cost energy to be produced and also reduces the amount of CO2 released into the atmosphere. The recently-patented material is a gel that enables the CO2 to be turned back into hydrocarbons via...

Research Provides New Insight Into Snowball Earth Duration
2013-02-28 21:17:15

Lee Rannals for redOrbit.com — Your Universe Online About 635 million years ago, our world was covered in ice during an event called "Snowball Earth," and new details written in the Proceedings of the National Academy of Sciences provide new insight on the duration of this event. According to the Snowball Earth hypothesis, an ice age brought on rapid changes in the atmospheric conditions on our planet, followed by a rapid greenhouse heat wave. This period may have given rise to...

Polar Regions Will See More Snow Over Next Century, Less Everywhere Else
2013-02-23 07:19:05

redOrbit Staff & Wire Reports - Your Universe Online A newly-developed National Oceanic and Atmospheric Administration (NOAA) climate model predicts that increasing carbon dioxide (CO2) levels will lead to less snowfall in most areas of the world — including the United States — over the next 100 years. In fact, research conducted by Sarah Kapnick of the Princeton University Atmospheric and Oceanic Sciences (AOS) program and Thomas Delworth, a senior physical scientist at...

MOF Solar Sponge Absorbs Carbon Dioxide
2013-02-19 21:44:35

Enid Burns for redOrbit.com — Your Universe Online A group of scientists at Commonwealth Scientific and Industrial Research Organization (CSIRO), Australia's national science agency, have created a "solar sponge" using a metal organic framework (MOF) that absorbs carbon dioxide, but releases it when exposed to sunlight. The journal Angewandte Chemie published a paper detailing MOF. The interaction is known as dynamic photo-switching. The capture-and-release method of dynamic...

warming trend continues
2013-01-16 04:37:02

[ Watch the Video: NASA's Analysis of 2012 Global Temperature ] April Flowers for redOrbit.com - Your Universe Online Scientists at NASA report that 2012 was the ninth warmest year on record since 1880. This continues a long-term global trend of rising temperatures. With one exception, 1998, the nine warmest years in the 132-year record have all occurred since 2000. The hottest years on record were 2010 and 2005. An updated analysis released this past Tuesday by NASA's Goddard...

Greenhouse Gas Associated With High Sea Levels Over Past 40 Million Years
2013-01-03 09:12:39

April Flowers for redOrbit.com - Your Universe Online Researchers based at the National Oceanography Centre, Southampton, have found that greenhouse gas concentrations similar to the present — almost 400 parts per million - were systematically associated with sea levels at least 30 feet above current levels by comparing reconstructions of atmospheric CO2 concentrations and sea level over the past 40 million years. The study, published online in the Proceedings of the National...