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NASA Study reveals reasons for Sea Ice Changes at the Arctic, Antarctica

 

Written by Alan Buis
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, 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.

Older, rougher and thicker Antarctic sea ice in the Bellingshausen Sea in Oct. 2007, within the sea ice shield surrounding Antarctica. The ice in this region is approximately 33 feet (10 meters) thick. (M.J. Lewis)

Older, rougher and thicker Antarctic sea ice in the Bellingshausen Sea in Oct. 2007, within the sea ice shield surrounding Antarctica. The ice in this region is approximately 33 feet (10 meters) thick. (M.J. Lewis)

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NASA uses Airborne Radar to study sinking rate of New Orleans

 

NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – New Orleans and surrounding areas continue to sink at highly variable rates due to a combination of natural geologic and human-induced processes, finds a new NASA/university study using NASA airborne radar.

The observed rates of sinking, otherwise known as subsidence, were generally consistent with, but somewhat higher than, previous studies conducted using different radar data.

The research was the most spatially-extensive, high-resolution study to date of regional subsidence in and around New Orleans, measuring its effects and examining its causes.

Subsidence in Jefferson Parish, Louisiana, from June 2009 to July 2012, as seen by NASA's UAVSAR instrument. The measured displacements are a combination of movement of the ground and of individual structures. The inset at lower right shows the parish location within Greater New Orleans. (NASA/JPL-Caltech, Esri)

Subsidence in Jefferson Parish, Louisiana, from June 2009 to July 2012, as seen by NASA’s UAVSAR instrument. The measured displacements are a combination of movement of the ground and of individual structures. The inset at lower right shows the parish location within Greater New Orleans. (NASA/JPL-Caltech, Esri)

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Tennessee Titans select UCLA LB Aaron Wallace in the 7th round of the NFL Draft

 

Tennessee TitansNashville, TN – In the 7th round of the 2016 NFL Draft, the Tennessee Titans selected UCLA Bruins linebacker Aaron Wallace with the 222nd overall pick Saturday.

The 6’3″ 240 pound Wallace ran the 40 yard dash in 4.57 seconds at the NFL Combine. He had 25 reps on the bench press (225 pounds), a 36″ vertical leap and ran the short shuttle in 4.27 seconds.

UCLA Bruins linebacker Aaron Wallace (51) was taken by the Tennessee Titans with the 222nd overall pick of the NFL Draft. (Jayne Kamin-Oncea-USA TODAY Sports)

UCLA Bruins linebacker Aaron Wallace (51) was taken by the Tennessee Titans with the 222nd overall pick of the NFL Draft. (Jayne Kamin-Oncea-USA TODAY Sports)

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NASA’s Landsat-5 satellite used to detect Underground Forest Fungi from Space

 

Written by Carol Rasmussen
NASA Earth Science News Team

NASA - National Aeronautics and Space AdministrationPasadena, CA – A NASA-led team of scientists has developed the first-ever method for detecting the presence of different types of underground forest fungi from space, information that may help researchers predict how climate change will alter forest habitats.

Hidden beneath every forest is a network of fungi living in mutually beneficial relationships with the trees. Called mycorrhizal fungi, these organisms spread underground for miles, scavenging for nutrients that they trade with trees for sugars the trees make during photosynthesis. “Nearly all tree species associate with only one of two types of mycorrhizal fungi,” explained coauthor Richard Phillips of Indiana University, Bloomington.

Nearly all forest trees live in symbiosis with underground fungi, and the type of fungus in a forest location can now be identified in satellite images. (Malene Thyssen/CC BY-SA 3.0)

Nearly all forest trees live in symbiosis with underground fungi, and the type of fungus in a forest location can now be identified in satellite images. (Malene Thyssen/CC BY-SA 3.0)

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NASA’s Dawn Spacecraft provides high resolution details of Bright Spots and complex features on Dwarf Planet Ceres

 

Written by Elizabeth Landau
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – Scientists from NASA’s Dawn mission unveiled new images from the spacecraft’s lowest orbit at Ceres, including highly anticipated views of Occator Crater, at the 47th annual Lunar and Planetary Science Conference in The Woodlands, Texas, on Tuesday.

Occator Crater, measuring 57 miles (92 kilometers) across and 2.5 miles (4 kilometers) deep, contains the brightest area on Ceres, the dwarf planet that Dawn has explored since early 2015. The latest images, taken from 240 miles (385 kilometers) above the surface of Ceres, reveal a dome in a smooth-walled pit in the bright center of the crater.

Occator Crater, measuring 57 miles (92 kilometers) across and 2.5 miles (4 kilometers) deep, contains the brightest area on Ceres. (NASA/JPL-Caltech/UCLA/MPS/DLR/IDA/PSI)

Occator Crater, measuring 57 miles (92 kilometers) across and 2.5 miles (4 kilometers) deep, contains the brightest area on Ceres. (NASA/JPL-Caltech/UCLA/MPS/DLR/IDA/PSI)

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UT Lady Vols face Ohio State Buckeyes in NCAA Tournament’s Sweet 16, Friday

 

#7 Seed Tennessee Lady Vols (21-13) vs. #3 Seed Ohio State Buckeyes (26-7)

Friday, March 25th, 2016 | 8:30pm CT/9:30pm ET
Sioux Falls, SD | Denny Sanford Premier Center

UT Lady VolsKnoxville, TN – The No. 7 seed Lady Vols (21-13) will take on No. 3 seed Ohio State (26-7) in the Sweet 16 of the NCAA Tournament in Sioux Falls, South Dakota on Friday at 8:30pm CT/ 9:30pm ET on ESPN2.

The winner will advance to Sunday’s Sioux Falls Regional final and will play the winner of the other semifinal game featuring No. 1 seed and #3/2-ranked South Carolina (33-1) vs. No. 4 seed and #14/15-ranked Syracuse (27-7).

Tennessee advanced to the semifinal round on Sunday night by upsetting No. 2 seed and #11/11 Arizona State, 75-64, in the second round on the Sun Devils’ home court in Tempe. UT had beaten No. 10 seed Green Bay in the first round last Friday, 59-53.

The Tennessee Lady Vols will take on #3 seed Ohio State on Friday at 8:30pm CT from Sioux Falls, SD. (UT Athletics Department) «Read the rest of this article»

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UT Lady Vols Basketball takes on Arizona State in second round of NCAA Tournament

 

#7 Tennessee Lady Vols (20-13) vs. #2 Arizona State (26-6)

Sunday, March 20th, 2016 | 9:00pm ET/8:00pm CT
Tempe, AZ | Wells Fargo Arena

UT Lady VolsKnoxville, TN – The No. 7 seed Lady Vols (20-13) will put their undefeated second round record on the line against No. 2 seed Arizona State (26-6) in the second round of the NCAA Tournament in Tempe, Arizona on Sunday at 6:00pm PT/ 9:00pm ET/ 8:00pm CT on ESPN.

The winner will advance to the Sweet 16 and will play a yet-to-be-determined opponent on March 25th in Sioux Falls. Tennessee advanced to the second round on Friday afternoon by defeating No. 10 seed Green Bay, 59-53, coming from eight down in the first half.

Arizona State, meanwhile, romped to a 74-52 win over No. 15 seed New Mexico State to move along to Sunday.

Tennessee Women's Basketball takes on No. 2 seed Arizona State in the second round of the NCAA Tournament Sunday. (UT Athletics Department) «Read the rest of this article»

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A look at NASA’s Dawn spacecraft year of Orbiting dwarf planet Ceres

 

Written by Elizabeth Landau
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – One year ago, on March 6th, 2015, NASA’s Dawn spacecraft slid gently into orbit around Ceres, the largest body in the asteroid belt between Mars and Jupiter.  Since then, the spacecraft has delivered a wealth of images and other data that open an exciting new window to the previously unexplored dwarf planet.

“Ceres has defied our expectations and surprised us in many ways, thanks to a year’s worth of data from Dawn. We are hard at work on the mysteries the spacecraft has presented to us,” said Carol Raymond, deputy principal investigator for the mission, based at NASA’s Jet Propulsion Laboratory, Pasadena, California.

The mysterious mountain Ahuna Mons is seen in this mosaic of images from NASA's Dawn spacecraft. Dawn took these images from its lowest-altitude orbit. (NASA/JPL-Caltech/UCLA/MPS/DLR/IDA)

The mysterious mountain Ahuna Mons is seen in this mosaic of images from NASA’s Dawn spacecraft. Dawn took these images from its lowest-altitude orbit. (NASA/JPL-Caltech/UCLA/MPS/DLR/IDA)

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NASA Study reveals Sierra Snow can be reduced by Atmospheric River Storms

 

Written by Alan Buis
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – A new study by NASA and several partners has found that in California’s Sierra Nevada, atmospheric river storms are two-and-a-half times more likely than other types of winter storms to result in destructive “rain-on-snow” events, where rain falls on existing snowpack, causing it to melt. Those events increase flood risks in winter and reduce water availability the following summer.

The study, based on NASA satellite and ground-based data from 1998 through 2014, is the first to establish a climatological connection between atmospheric river storms and rain-on-snow events. Partnering with NASA on the study were UCLA; Scripps Institution of Oceanography, San Diego; and the Earth System Research Laboratory, Boulder, Colorado.

Rain falling on snow. (Flickr user Malcolm Peacey, CC BY-NC 2.0)

Rain falling on snow. (Flickr user Malcolm Peacey, CC BY-NC 2.0)

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NASA creates animated view of Dwarf Planet Ceres using Dawn Spacecraft images

 

Written by Elizabeth Landau
NASA’s Jet Propulsion Laboratory

NASA - National Aeronautics and Space AdministrationPasadena, CA – A colorful new animation shows a simulated flight over the surface of dwarf planet Ceres, based on images from NASA’s Dawn spacecraft.

The movie shows Ceres in enhanced color, which helps to highlight subtle differences in the appearance of surface materials. Scientists believe areas with shades of blue contain younger, fresher material, including flows, pits and cracks.

Simulated view of Dwarf planet Ceres using images from NASA's Dawn spacecraft. (NASA/JPL-Caltech/UCLA/MPS/DLR/IDA)

Simulated view of Dwarf planet Ceres using images from NASA’s Dawn spacecraft. (NASA/JPL-Caltech/UCLA/MPS/DLR/IDA)

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