je.st
news
Tag: levels
CO2 levels hit monthly average not seen for 2 million years
2015-05-07 22:44:00| Climate Ark Climate Change & Global Warming Newsfeed
Mongabay: For the first time in human history, carbon dioxide concentrations averaged out at 400 parts per million (ppm) worldwide in March, according to NOAA. Carbon dioxide concentrations have likely not hit such levels in two million years-long before Homo sapiens evolved. "This marks the fact that humans burning fossil fuels have caused global carbon dioxide concentrations to rise more than 120 parts per million since pre-industrial times," said Pieter Tans, lead scientist of NOAAs Global Greenhouse...
Tags: years
average
hit
million
NASA Warns About High CO2 Levels That Are Greening The Planet
2015-05-07 18:42:24| Apparel - Topix.net
The National Aeronautics and Atmospheric Administration warned atmospheric levels of carbon dioxide reached new levels during March, levels the space agency says are a harbinger of dangerous global warming. "Passing the 400 mark reminds me that we are on an inexorable march to 450 ppm and much higher levels," said Michael Gunson, the head of NASA's global change and energy program.
Carbon dioxide levels reach global milestone
2015-05-07 16:00:00| Climate Ark Climate Change & Global Warming Newsfeed
USA Today: Worldwide levels of carbon dioxide - the gas scientists say is most responsible for global warming - reached a significant milestone for the month of March, the National Oceanic and Atmospheric Administration said Wednesday. The global monthly average for carbon dioxide hit 400.83 parts per million in March, the first time the average surpassed 400 ppm for an entire month since such measurements began in the late 1950s, NOAA said. "It's both disturbing and daunting," said NOAA chief greenhouse...
Tags: global
levels
reach
carbon
Global carbon dioxide levels reach new monthly record
2015-05-07 16:00:00| Climate Ark Climate Change & Global Warming Newsfeed
Agence France-Presse: In another ominous sign of human-caused climate change, US government scientists said Wednesday that global carbon dioxide concentrations have reached a new monthly record of 400 parts per million. Carbon dioxide is a potent greenhouse gas, and is a harmful by-product of burning fossil fuels such as oil and coal. "For the first time since we began tracking carbon dioxide in the global atmosphere, the monthly global average concentration of this greenhouse gas surpassed 400 parts per million...
Tags: global
record
levels
monthly
Climate milestone reached as global carbon dioxide levels surpass 400ppm
2015-05-07 12:14:00| Climate Ark Climate Change & Global Warming Newsfeed
Blue and Green: Global carbon dioxide concentrations have surpassed 400 parts per million (ppm) for the first month since measurements began, the latest results from the National Oceanic and Atmospheric Administration (NOAA) show. Scientists have said the record is a significant climate milestone. According to the UN Intergovernmental Panel on Climate Change, the concentration of all greenhouse gases, including methane and other gasses that are not included in NOAAs measurement, must not exceed 450ppm this century...
Tags: global
levels
reached
carbon
Sites : [77] [78] [79] [80] [81] [82] [83] [84] [85] [86] [87] [88] [89] [90] [91] [92] [93] [94] [95] [96] next »