New Study Says Water Vapor Is Global Warming Amplifier

Monday, July 28, 2014

A new study from scientists at the University of Miami Rosenstiel School of Marine and Atmospheric Science and colleagues says rising levels of water vapor in the upper troposphere – a key amplifier of global warming – will intensify climate change impacts over the next decades. The new study is the first to show that increased water vapor concentrations in the atmosphere are a direct result of human activities.

“The study is the first to confirm that human activities have increased water vapor in the upper troposphere,” said Brian Soden, professor of atmospheric sciences at the UM Rosenstiel School and co-author of the study.

To investigate the potential causes of a 30-year moistening trend in the upper troposphere, a region three to seven miles above Earth’s surface, Soden, UM Rosenstiel School researcher Eui-Seok Chung and colleagues measured water vapor in the upper troposphere collected by NOAA satellites and compared them to climate model predictions of water circulation between the ocean and atmosphere to determine whether observed changes in atmospheric water vapor could be explained by natural or man-made causes. Using the set of climate model experiments, the researchers showed that rising water vapor in the upper troposphere cannot be explained by natural forces, such as volcanoes and changes in solar activity, but can be explained by increased greenhouse gases, such as CO2.

Greenhouse gases raise temperatures by trapping the Earth’s radiant heat inside the atmosphere. This warming also increases the accumulation of atmospheric water vapor, the most abundant greenhouse gas. The atmospheric moistening traps additional radiant heat and further increases temperatures.

Climate models predict that as the climate warms from the burning of fossil fuels, the concentrations of water vapor will also increase in response to that warming. This moistening of the atmosphere, in turn, absorbs more heat and further raises the Earth's temperature.

The paper, titled “Upper Tropospheric Moistening in response to Anthropogenic Warming,” was published in the July 28 Early Addition on-line of the journal Proceedings of the National Academy of Sciences (PNAS). The paper’s authors include Chung, Soden, B.J. Sohn of Seoul National University, and Lei Shi of NOAA's National Climatic Data Center in Asheville, N.C.


Wildflower Walks Celebrate Spring Blooms In Georgia’s State Parks

Longer days, warmer weather and colorful blooms are sure signs of Spring’s arrival. To celebrate the season, Georgia State Park rangers are hosting a series of guided wildflower walks that provide a close look at blooms such as Canada Violet, Trout Lily, Wild Azalea, Spring Beauty, Foamflower, Trillium, Indian Pink and Buckeye.  For details on Georgia State Park wildflower ... (click for more)

Fur Harvesters Sale Is March 4 In Crossville

Tennessee Wildlife Resources Agency (TWRA) will be on hand to provide fur harvesters with bobcat and otter tags at the annual Fur Harvesters Association sale on  March 4 , at the Cumberland County Fair Complex in Crossville. Check in starts at  8:00 a.m. Central Standard Time and the sale will begin  9:30 a.m.  The event will continue until all sales are ... (click for more)

Feds Say East Ridge Judge, Commissioner Owe Taxes To IRS

A civil suit has been filed in Federal Court by the Internal Revenue Service against East Ridge City Judge Cris Helton and his former wife, East Ridge Commissioner Esther Helton, saying they owe taxes. The suit says Judge Helton, who defeated longtime Judge Arvin Reingold in 2014, owes $408,321.71 in taxes for his Helton Law Firm. It says he and Ms. Helton owe $20,651.69 in ... (click for more)

NASA Employee Gets 10-Year Federal Prison Term After Being Caught In Child Sex Sting In Chattanooga; De Matties Placed Ad Looking For "Petite Young Teenage Slut"

Thomas de Matteis, 54, of Hazel Green, Ala., was sentenced on Monday by Federal Judge Sandy Mattice to serve 10 years in federal prison for coercing or enticing a minor to engage in sexual activity. Matteis entered a guilty plea to the charge in November 2016.   At the time of his offenses, Matteis was employed by NASA in Alabama.  An investigation started by ... (click for more)

Embrace America - And Response

Okay, Hollywierd we get it. The world of entertainment and cinema arts do not support President Trump. But for all their derisive and divisive speech, truth remains. People who support conservative values do not hate children, we do not hate immigrants, we do not hate other races and ethnicities although that is all you trumpet at every opportunity.  What we do support ... (click for more)

Roy Exum: The Eye Of The Storm

There is a very serious building in Norman, Okla., that houses the nation’s Storm Prediction Center for the National Oceanic and Atmospheric Administration and the National Weather Service. According to a Four-Day Forecast released on Sunday, north Alabama and the Chattanooga area are in the middle of the bulls eye for the United States. Yes, it was about 40 degrees and sunny ... (click for more)