Featured Research

from universities, journals, and other organizations

Scientists prepare for coming ATTREX climate study

Date:
November 9, 2011
Source:
NASA
Summary:
A consortium of scientists are in the early stages of preparation for a multi-year airborne science campaign to study the humidity and chemical composition of air entering the tropical tropopause layer of the atmosphere between eight and 11 miles (13 to 18 km) high. NASA's Airborne Tropical Tropopause Experiment, or ATTREX, will conduct this research over the Pacific Ocean from three locations in 2013 and 2014.

NASA's Global Hawk remotely operated Earth science aircraft No. 872 banks right over Edwards Air Force during a checkout flight.
Credit: NASA/Carla Thomas

A consortium of scientists are in the early stages of preparation for a multi-year airborne science campaign to study the humidity and chemical composition of air entering the tropical tropopause layer of the atmosphere between eight and 11 miles (13 to 18 km) high. NASA's Airborne Tropical Tropopause Experiment, or ATTREX, will conduct this research over the Pacific Ocean from three locations in 2013 and 2014.

Studies have shown that even small changes in stratospheric humidity may have climate impacts that are significant compared to those of decadal increases in greenhouse gases. Predictions of stratospheric humidity changes are uncertain due to gaps in the understanding of the physical processes occurring in the tropical tropopause layer.

Led by principal investigator Eric Jensen and project manager Dave Jordon of NASA's Ames Research Center at Moffett Field, Calif., the scientists are integrating instruments onto one of NASA's Global Hawk unmanned aircraft and are verifying their operation during checkout flights from NASA's Dryden Flight Research Center at Edwards, Calif.

Eleven instruments are being installed in equipment racks on Global Hawk No. 872. The instruments were initially tested during an Oct. 20 flight in the restricted area over Edwards Air Force Base, Calif.

On Oct. 28, the first of three long-duration flights headed west over the Pacific from Edwards, returning more than 21 hours later. The aircraft flew farther south than any previous Global Hawk science mission, reaching 6.5 degrees north latitude.

The second long-duration flight -- which was the 50th flight of a NASA Global Hawk -- was a 16-hour mission that occurred over the weekend of Nov. 5-6. A final Pacific Ocean flight was planned for Nov. 9 before the instruments are removed in mid-November.

The team consists of investigators from NASA, NOAA, three universities, the National Center for Atmospheric Research and private industry. The specialized instruments include a lidar, a spectrometer, a photometer, a chromatograph, a radiometer, hygrometers and several sensors that collect atmospheric data.

The science team will return to NASA Dryden in January 2013 to begin the task of science data collection. The study will continue with deployments to the Pacific region in January and June 2014. Scientists hope to use the data to improve global model predictions of stratospheric humidity and composition.

Jensen's proposal for ATTREX was competitively selected and is one of the first investigations in the new Venture-class series of low-to-moderate cost projects announced in May 2010. The Earth Venture missions are part of NASA's Earth System Science Pathfinder program. The small, targeted science investigations complement NASA's larger science research missions.


Story Source:

The above story is based on materials provided by NASA. Note: Materials may be edited for content and length.


Cite This Page:

NASA. "Scientists prepare for coming ATTREX climate study." ScienceDaily. ScienceDaily, 9 November 2011. <www.sciencedaily.com/releases/2011/11/111109134049.htm>.
NASA. (2011, November 9). Scientists prepare for coming ATTREX climate study. ScienceDaily. Retrieved July 25, 2014 from www.sciencedaily.com/releases/2011/11/111109134049.htm
NASA. "Scientists prepare for coming ATTREX climate study." ScienceDaily. www.sciencedaily.com/releases/2011/11/111109134049.htm (accessed July 25, 2014).

Share This




More Earth & Climate News

Friday, July 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Goma Cheese Brings Whiff of New Hope to DRC

Goma Cheese Brings Whiff of New Hope to DRC

Reuters - Business Video Online (July 24, 2014) — The eastern region of the Democratic Republic of Congo, mainly known for conflict and instability, is an unlikely place for the production of fine cheese. But a farm in the village of Masisi, in North Kivu is slowly transforming perceptions of the area. Known simply as Goma cheese, the Congolese version of Dutch gouda has gained popularity through out the region. Ciara Sutton reports. Video provided by Reuters
Powered by NewsLook.com
Bill Gates: Health, Agriculture Key to Africa's Development

Bill Gates: Health, Agriculture Key to Africa's Development

AFP (July 24, 2014) — Health and agriculture development are key if African countries are to overcome poverty and grow, US software billionaire Bill Gates said Thursday, as he received an honourary degree in Ethiopia. Duration: 00:36 Video provided by AFP
Powered by NewsLook.com
Higgins Breaks Record at Mt. Washington

Higgins Breaks Record at Mt. Washington

Driving Sports (July 24, 2014) — Subaru Rally Team USA drivers David Higgins and Travis Pastrana face off against a global contingent of racers at the annual Mt. Washington Hillclimb in New Hampshire. Includes exclusive in-car footage from Higgins' record attempt. Video provided by Driving Sports
Powered by NewsLook.com
Storm Kills Three, Injures 20 at Virginia Campground

Storm Kills Three, Injures 20 at Virginia Campground

Reuters - US Online Video (July 24, 2014) — A likely tornado tears through an eastern Virginia campground, killing three and injuring at least 20. Linda So reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

    Health News

      Environment News

        Technology News



          Save/Print:
          Share:  

          Free Subscriptions


          Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

          Get Social & Mobile


          Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

          Have Feedback?


          Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
          Mobile iPhone Android Web
          Follow Facebook Twitter Google+
          Subscribe RSS Feeds Email Newsletters
          Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins