March 18, 2015
Amazon Absorbs Less Carbon Dioxide as Trees Die Off, Study SaysThe Amazon rain forest has long absorbed more carbon than it releases and acted as a vital brake on climate change. An extensive study now suggests that it is losing its ability to suck up the excess carbon dioxide being emitted into the atmosphere by human activities.
March 15, 2015
Emissions by Makers of Energy Level OffSomebody tapped the brakes.
Carbon dioxide emissions from the world’s energy producers stalled in 2014, the first time in 40 years of measurement that the level did not increase during a period of economic expansion, according to preliminary estimates from the International Energy Agency.
March 10, 2015
Hidden greenhouse emissions revealed in new reportRestoration of wetlands can reduce greenhouse gas emissions. This is shown in a report that has been written in part by researchers from the University of Gothenburg.
March 8, 2015
February carbon dioxide levels average 400ppm for first timeThe US government’s greenhouse gas monitoring site at Mauna Loa in Hawaii has confirmed that its average recorded carbon dioxide levels for February topped 400 parts per million (ppm) - the first time that this has been seen in a northern winter month.
February 25, 2015
Scientists witness carbon dioxide trapping heat in airWASHINGTON (AP) - Scientists have witnessed carbon dioxide trapping heat in the atmosphere above the United States, chronicling human-made climate change in action, live in the wild.
January 19, 2015
Study: Melting glaciers have big carbon impactAs the Earth warms and glaciers all over the world begin to melt, researchers and public policy experts have focused largely on how all of that extra water will contribute to sea level rise.
January 13, 2015
NASA Mountaintop Sensor Finds High Methane over LAA NASA study using two years of observations from a novel mountaintop instrument finds that Los Angeles' annual emissions of methane, an important greenhouse gas, are 18 to 61 percent higher than widely used estimates.
January 12, 2015
2015 Begins With CO2 Above 400 PPM MarkThe new year has only just begun, but we’ve already recorded our first days with average carbon dioxide levels above 400 parts per million, potentially leading to many months in a row above this threshold, experts say.
December 29, 2014
NASA Finds Good News on Forests and Carbon DioxideA new NASA-led study shows that tropical forests may be absorbing far more carbon dioxide than many scientists thought, in response to rising atmospheric levels of the greenhouse gas.
December 18, 2014
NASA's Spaceborne Carbon Counter Maps New DetailsThe first global maps of atmospheric carbon dioxide from NASA's new Orbiting Carbon Observatory-2 mission demonstrate its performance and promise, showing elevated carbon dioxide concentrations across the Southern Hemisphere from springtime biomass burning.
Watching the planet breathe
When plants photosynthesize, they use energy from sunlight to turn carbon dioxide from the air into sugars used to live and grow. In doing so, they give off a fluorescent light — a glow that can’t be seen with the naked eye, but that can be seen with the right instruments. More photosynthesis translates into more fluorescence, meaning that the plants are very productive in taking up carbon dioxide. The amount of carbon dioxide taken up by plants is called “gross primary productivity,” and is the largest part of the global carbon cycle.