Written by Alan Buis
Pasadena, CA – A new NASA-led study has found that in at least part of the Arctic, scientists are not doing as good a job of detecting changes in carbon dioxide during the long, dark winter months as they are at monitoring changes during the short summer.
That’s a concern, because growing Arctic plants can act as a brake on global warming rates by removing carbon from the atmosphere, but increasing cold-season emissions could overwhelm the braking effect and accelerate global warming.
Written by Alan Buis
Pasadena, CA – Why has the sea ice cover surrounding Antarctica been increasing slightly, in sharp contrast to the drastic loss of sea ice occurring in the Arctic Ocean? A new NASA-led study finds the geology of Antarctica and the Southern Ocean are responsible.
A NASA/NOAA/university team led by Son Nghiem of NASA’s Jet Propulsion Laboratory, Pasadena, California, used satellite radar, sea surface temperature, land form and bathymetry (ocean depth) data to study the physical processes and properties affecting Antarctic sea ice.
Written by Audrey Haar
Greenbelt, MD – A volcano erupting and spewing ash into the sky can cover nearby areas under a thick coating of ash and can also have consequences for aviation safety. Airline traffic changes due to a recent volcanic eruption can rack up unanticipated expenses to flight cancellations, lengthy diversions and additional fuel costs from rerouting.
Airlines are prudently cautious, because volcanic ash is especially dangerous to airplanes, as ash can melt within an operating aircraft engine, resulting in possible engine failure.
Written by Ellen Gray
Clouds are among the most important mediators of heat reaching Earth’s surface. Where clouds are absent, darker surfaces like the ocean or vegetated land absorb heat, but where clouds occur their white tops reflect incoming sunlight away, which can cause a cooling effect on Earth’s surface.
Written by Sara Goodeyon
Kansas City, MO – With the arrival of the outdoor recreation season, the U.S. Army Corps of Engineers, Kansas City District reminds outdoor enthusiasts and recreationalists to be weather aware when visiting Corps lakes and recreation areas.
The National Weather Service advises the public that the best protection from weather-related injury or death is to monitor the weather and postpone or cancel outdoor activities when inclement weather is in the forecast.
Heavy Rainfall tonight and Strong to Severe Storms tomorrow expected for Clarskville-Montgomery County
Nashville, TN – The National Weather Service (NWS) reports scattered to numerous showers and thunderstorms will spread across Clarksville-Montgomery County and parts of Middle Tennessee late tonight and tomorrow.
Some storms will likely produce locally heavy rainfall with rainfall totals of 1 to 3 inches expected. Some localized flash flooding could occur in some areas, especially west of I-65 as early as tomorrow morning.
This flash flood threat will persist through tomorrow evening with additional showers and thunderstorms expected.
Nashville, TN – The National Weather Service (NWS) reports scattered showers and thunderstorms will spread across Clarksville-Montgomery County and Middle Tennessee during the day on Wednesday, March 30th, becoming more widespread and heavy Wednesday night.
Some storms will likely produce heavy rainfall with rainfall totals of 1 to 3 inches currently expected. This rainfall may lead to flash flooding in some areas.
Written by Alan Buis
Pasadena, CA – Jason-3, a new U.S.-European oceanography satellite mission with NASA participation, has produced its first complete science map of global sea surface height, capturing the current signal of the 2015-16 El Niño.
The map was generated from the first 10 days of data collected once Jason-3 reached its operational orbit of 830 miles (1,336 kilometers) last month. It shows the state of the ongoing El Niño event that began early last year. After peaking in January, the high sea levels in the eastern Pacific are now beginning to shrink.
NASA’s Global Precipitation Measurement Satellite studies Thunderstorms in Southeastern United States
Written by Hal Pierce / Rob Gutro
Greenbelt, MD – Severe weather moved through the southern U.S. on February 2nd and 3rd, and NASA’s Global Precipitation Measurement or GPM core satellite examined the violent thunderstorms.
On February 3rd, 2016 at 1851 UTC (1:51pm ET/12:51pm CT) the GPM core observatory satellite flew over a line of storms extending from the Gulf coast of Florida through New York state. Tornadoes were spotted in Georgia and South Carolina within this area of violent weather.
Written by Dwayne Brown
Washington, D.C. – Earth’s 2015 surface temperatures were the warmest since modern record keeping began in 1880, according to independent analyses by NASA and the National Oceanic and Atmospheric Administration (NOAA).
Globally-averaged temperatures in 2015 shattered the previous mark set in 2014 by 0.23 degrees Fahrenheit (0.13 Celsius). Only once before, in 1998, has the new record been greater than the old record by this much.
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