NOAA

Three ‘Most Important’ Greenhouse Gases Reached Record Highs

April 9, 2024 Cristen Hemingway Jaynes, EcoWatch. Educate! climate crisis, Environment, greenhouse gases, Methane, NOAA

Levels of the three “most important” greenhouse gases — methane, carbon dioxide and nitrous oxide — in the atmosphere reached record highs again in 2023, according to research conducted by scientists with the National Oceanic and Atmospheric Administration (NOAA)’s Global Monitoring Laboratory (GML). Air samples taken by GML indicated that levels of the heat-trapping gases did not rise as fast as the record leaps of recent years, but were still in accordance with sharp increases recorded in the past decade, a press release from NOAA said.

Increase In Atmospheric Methane Set Another Record During 2021

April 9, 2022 NOAA. Educate! Carbon Dioxide, climate crisis, NOAA, Sea level rise

For the second year in a row, NOAA scientists observed a record annual increase in atmospheric levels of methane, a powerful, heat-trapping greenhouse gas that’s the second biggest contributor to human-caused global warming after carbon dioxide. NOAA’s preliminary analysis showed the annual increase in atmospheric methane during 2021 was 17 parts per billion (ppb), the largest annual increase recorded since systematic measurements began in 1983. The increase during 2020 was 15.3 ppb. Atmospheric methane levels averaged 1,895.7 ppb during 2021, or around 162% greater than pre-industrial levels. From NOAA’s observations, scientists estimate global methane emissions in 2021 are 15% higher than the 1984-2006 period.

NOAA Predicts One-Foot Sea-Level Rise By 2050

February 16, 2022 Kenny Stancil, Common Dreams. Educate! climate crisis, Environment, NOAA, Sea level rise

Ocean levels along the U.S. coastline are projected to rise by an average of 10 to 12 inches over the next three decades, worsening the threat of flooding in dozens of highly populated cities, according to a new report released Tuesday by the National Oceanic and Atmospheric Administration and other federal agencies. The additional foot of sea-level rise that millions in the U.S. are predicted to face by mid-century is equivalent to the amount experienced in the previous hundred years—a manifestation of the climate crisis that scientists attribute to unmitigated greenhouse gas (GHG) pollution driven primarily by the burning of fossil fuels. This intensification of rising seas "will create a profound increase in the frequency of coastal flooding, even in the absence of storms or heavy rainfall," said NOAA.

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