Subscribe free to our newsletters via your
. 24/7 Space News .

Scientists Prepare for Coming ATTREX Climate Study
by Beth Hagenauer for NASA Dryden News
Edwards AFB CA (SPX) Nov 10, 2011

NASA Goddard's Cloud Physics Lidar electronics are installed in the upper area of NASA's Global Hawk unmanned aircraft just in front of the aircraft's communications antenna. (NASA / Tom Tschida).

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.


Related Links
Ames Research Center
Earth Observation News - Suppiliers, Technology and Application

Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks DiggDigg RedditReddit GoogleGoogle

Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News

China launches remote-sensing satellite
Taiyuan (XNA) Nov 10, 2011
China successfully launched the remote-sensing satellite Yaogan XII Wednesday from the Taiyuan Satellite Launch Center in the northern Shanxi province, according to a press release from the center. The satellite was sent into space aboard a Long March 4B carrier rocket at 11:21 a.m. Beijing Time, according to the center. The satellite will be used to conduct scientific experiments, c ... read more

Ancient Lunar Dynamo May Explain Magnetized Moon Rocks

Ancient Lunar Dynamo May Explain Magnetized Moon Rocks

Lunar Probe to search for water on Moon

Subtly Shaded Map of Moon Reveals Titanium Treasure Troves

NASA Ready for November Launch of Car-Size Mars Rover

Russia fails to revive stranded Mars probe

Russia tries to save stranded Mars probe

Curiosity Drives Canada Back To Mars

International rendezvous in Lucca on global space exploration

Shot US lawmaker speaks out in first interview

Orbital Teamed with Three NASA Explorer Mission Finalists

NASA Proposes Orion Spacecraft Test Flight In 2014

Second Tiangong-1 And Shenzhou-8 docking to face light interference

Made-in-Chengdu to help Shenzhou spacecraft return

What does the Tiangong 1 space station mean for China

China masters space command, control

Campaign Begins For Third Automated Transfer Vehicle Mission To ISS

New Supply Ship Arrives, Departure Preps and Science Under Way

Russian space freighter docks with orbital station

Progress Successfully Docks With ISS

ILS and Eutelsat Announce Launch of the W3D Satellite in 2013

The second Soyuz launcher's Fregat upper stage is readied for flight

Arianespace Ends 2011 With Three Launcher Campaigns

Six Astrium satellites on the same flight

Three New Planets and a Mystery Object Discovered Outside Our Solar System

Dwarf planet sized up accurately as it blocks light of faint star

Herschel Finds Oceans of Water in Disk of Nearby Star

UH Astronomer Finds Planet in the Process of Forming

New metamaterial allows transmission gain while retaining negative refraction property

iPhone 4S making frenzied debut in 15 new markets

Are electron tweezers possible

NASA Develops Super-Black Material That Absorbs Light Across Multiple Wavelength Bands

The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement