NOAA research links human-caused CO2 emissions to dissolving sea snail shells off U.S. West Coast NOAA research links human-caused CO2 emissions to dissolving sea snail shells off U.S. West Coast For the first time, NOAA and partner scientists have connected the concentration of human-caused carbon dioxide in waters off the U.S. Pacific coast to the dissolving of shells of microscopic marine sea snails called pteropods. Read more
Scientists test a new tool to improve local precipitation forecasts Scientists test a new tool to improve local precipitation forecasts A new weather forecasting tool could soon find itself part of the day-to-day operations of NOAA's National Weather Service (NWS). The instrument, called Atmospheric Emitted Radiance Interferometer, or AERI, measures temperature, water vapor and trace gases (like ozone, carbon monoxide and methane) in the lowest layer of Earth’s atmosphere, the troposphere. Now, an AERI project led by Tim Wagner, a scientist with NOAA’s Cooperative Institute for Meteorological Satellite Studies (CIMSS) at the University of Wisconsin–Madison, has received funding through NOAA’s Joint Technology Transfer Program. Read more
Study shows ocean acidification is two-front assault on coral reefs Study shows ocean acidification is two-front assault on coral reefs Scientists studying coral reefs in volcanically acidified water of the southwestern Pacific Ocean measured a net loss of coral reef skeletons due to increased bio-erosion, according to new research by NOAA, the Cooperative Institute for Marine and Atmospheric Studies (CIMAS) and Australian scientists. Read more
NOAA Research grants support continued tornado research in the Southeast NOAA Research grants support continued tornado research in the Southeast A study of tornadoes in the southeastern United States begins its second year this month as NOAA Research announces awards of $2.5 million in grants presented to partner institutions. Read more
Q&A: Is Arctic warming fueling severe winter weather in the mid-latitudes? Q&A: Is Arctic warming fueling severe winter weather in the mid-latitudes? We caught up with James Overland, oceanographer at NOAA’s Pacific Marine Environmental Lab, to hear about his latest research on whether Arctic warming is fueling more severe winter weather in the mid-latitudes, the temperate zone of the Earth between the tropics and the Arctic, and the part of the United States where most Americans live. Read more
Antarctic ozone hole about average in 2016 Antarctic ozone hole about average in 2016 Results are consistent with expectations, scientists say The hole in the Earth’s ozone layer that forms over Antarctica each September grew to about 8.9 million square miles in 2016 before starting to recover, according to scientists from NOAA and NASA who monitor the annual phenomenon. Read more
Despite pandemic shutdowns, carbon dioxide and methane surged in 2020 7Apr2021 Read more The global average carbon dioxide level in the atmosphere surged at the fifth-highest rate in NOAA's 63-year record during 2020. Preliminary estimates of the increase in methane levels indicate it may have been the largest annual jump on record. Read more
Climate-driven shifts in deep Lake Michigan water temperatures signal the loss of winter 16Mar2021 Read more Climate change is causing significant impacts on the Great Lakes and the surrounding region. As the largest surface freshwater system in the world, the Great Lakes have an enormous impact, seen and unseen, on the more than 34 million people who live within their collective basin. Because of their unique response to environmental conditions, Earth’s large lakes are considered by scientists as key sentinels of climate change. A long-term study published in Nature Communications today from NOAA reveals a warming trend in deepwater temperatures that foreshadows profound ecological change on the horizon. While less visible than the loss in ice cover and increasing lake surface temperatures, this latest index of climate change adds to the growing evidence of climate change impacts in the region. Read more
NOAA projects 30-percent maximum Great Lakes ice cover for 2021 winter 21Jan2021 Read more NOAA scientists project the maximum Great Lakes ice cover for 2021 will be 30 percent, higher than last year’s maximum of 19.5 percent, but part of a long-term pattern of declining ice cover likely driven by climate change. Read more
New study shows promise of forecasting meteotsunamis 31Mar2021 Read more On the afternoon of April 13, 2018, a large wave of water surged across Lake Michigan and flooded the shores of the picturesque beach town of Ludington, Michigan, damaging homes and boat docks, and flooding intake pipes. Thanks to a local citizen’s photos and other data, NOAA scientists reconstructed the event in models and determined this was the first ever documented meteotsunami in the Great Lakes caused by an atmospheric inertia-gravity wave. Read more
Emissions of a banned ozone-depleting gas are back on the decline 10Feb2021 Read more New analyses of global air measurements show that five years after an unexpected spike in emissions of the banned ozone-depleting chemical chlorofluorocarbon CFC-11, they dropped sharply between 2018 and 2019. Read more