Free Newsletters - Space News - Defense Alert - Environment Report - Energy Monitor
. Earth Science News .




FLORA AND FAUNA
Bird Rest Stops To Be Tracked by NASA Rain Radar
by Ellen Gray for Goddard Space Flight Center
Greenbelt, MD (SPX) Jun 13, 2012


The NASA NPOL radar is a research grade S-band, scanning dual-polarimetric radar. It underwent a complete antenna system upgrade in 2010 and is one of two fully transportable research-grade S-band systems in the world. It is used to make accurate volumetric measurements of precipitation including rainfall rate, particle size distributions, water contents and precipitation type. Credit: NASA

At sunset on a spring night, tree-dwelling songbirds take off in a flurry of wings from the lower Delmarva Peninsula near Oyster, Va. The peninsula is a temporary home to hundreds of species of migratory birds.

In spring they fly north to boreal forests of New England and Canada, returning from places as far south as Central and South America. Scientists are hoping to learn where the prime stopover spots are on this route with the help of ground radar set up by NASA to improve satellite measurements of rainfall.

Weather radar detects raindrops in the air, says Jeff Buler, radar ornithologist at University of Delaware, "and it essentially sees birds as sort of big bags of water."

The Nature Conservancy signed a Space Act Agreement that will provide a location in the Virginia Coast Reserve to support NASA's Precipitation Science programs, in particular the international Global Precipitation Measurement (GPM) mission, led by NASA and the Japan Space Exploration Agency, that will provide the next generation of global space-based observations of rain and snow. GPM will gather data from an international network of satellites led by the GPM Core observatory that is scheduled for launch in 2014.

To ensure accurate measurements from space, the GPM mission uses a combination of radar and rain gauge measurements here on Earth to ground-truth data collected by satellite instruments in a process called ground validation, says Walt Petersen, GPM ground validation scientist at the Wallops Flight Facility in Virginia.

NASA is stationing approximately 50 rain gauges in an area of approximately 10 square miles near Oyster. This dense network of gauges will serve as a reference for validating rain estimates made using the advanced capabilities of the NASA Polarimetric (NPOL) weather radar. The NPOL can quickly scan rainfall near and above the surface while providing accurate information on how hard it is falling over a very large area.

That same radar is what ecologists are hoping can help them understand where birds are stopping as they migrate through the Eastern Shore and aid conservation efforts, says Barry Truitt, a scientist with The Nature Conservancy.

The Conservancy is collaborating with Eric Walters of Old Dominion University and Jeff Buler of the University of Delaware who will have access to the NPOL radar and its data stream, on request and a non-interference basis, for migratory bird studies on the southern end of the Delmarva Peninsula.

"Radar gives us a way to map their distributions over large spatial scales because essentially these radars detect the birds as they take off," says Buler. He maps bird stopover sites with weather radars operated by the National Weather Service. "You just get this explosion of birds flying up into the radar and it basically gives us a snapshot of where they occur on the ground."

For weather prediction, the "biologicals" - birds, bats, and even insects - are filtered out. But when they're added back in, they can be difficult to distinguish from one another, says Buler. One reason he's excited about the NPOL radar is that the advanced measurements for rain translate into advanced measurements for birds.

The NPOL radar detects falling rain at lower altitudes and is sensitive enough to distinguish the size and shapes of raindrops, so it will be able to distinguish between flocks of birds and swarms of insects. The NPOL will also be situated in a blindspot of the weather radar network, expanding coverage of bird migration stopover areas. Buler expects they will begin collecting radar data next fall as warblers, thrushes, tanagers, flycatchers and dozens of other songbirds begin their journey south.

Eric Walters, an avian conservation biologist at Old Dominion University will do the bird migration project's own ground validation. Once the radar has identified bird stopover points, he and his students will hike into the area to survey what kinds of habitats they are and to see what bird species are visiting.

.


Related Links
GPM
Darwin Today At TerraDaily.com






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

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




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





FLORA AND FAUNA
Stealth behavior allows cockroaches to seemingly vanish
Berkeley CA (SPX) Jun 12, 2012
New cockroach behavior discovered by University of California, Berkeley, biologists secures the insect's reputation as one of nature's top escape artists, able to skitter away and disappear from sight before any human can swat it. In addition to its lightning speed, quick maneuvers and ability to squeeze through the tiniest cracks, the cockroach also can flip under a ledge and disappear in ... read more


FLORA AND FAUNA
Japan to develop drones to monitor radiation

Study predicts imminent irreversible planetary collapse

Japan agency sorry for comparing radiation to wife

Lithuania launches regional nuclear safety watchdog

FLORA AND FAUNA
New national supercomputer to perform astronomical feats

More people staying connected on vacation

Nano-engineered synthetic diamond sets a new quantum information record

Spin structure reveals key to new forms of digital storage

FLORA AND FAUNA
Scientists correct Amazon water level gauges from space

Environmentalists fear EU will fail to save its fish

Sea temperatures less sensitive to CO2 13 million years ago

China submersible to plumb new ocean depths

FLORA AND FAUNA
NASA Discovers Unprecedented Blooms of Ocean Plant Life

Will The Ice Age Strike Back

Secure, sustainable funding for Indigenous participation in Arctic Council a key priority

Expedition studies acid impacts on Arctic

FLORA AND FAUNA
Notre Dame research shows food-trade network vulnerable to fast spread of contaminants

Parasitic plants 'steal' genes from their hosts

China threatened by farmland contamination

Low-carbon farming takes root in Brazil's Amazon

FLORA AND FAUNA
More than 70 feared dead in Afghan quakes

Afghan quakes kill at least three: officials

Dozens in hospital after 6.0 quake hits near Turkish resort

US strips seaweed from Japanese tsunami wreck

FLORA AND FAUNA
Madagascan community sets example of saving environment

Botswana, climate and tourism

Contentious Angolan troops end Guinea-Bissau pullout

Carbon traders eye Mozambican stoves

FLORA AND FAUNA
More people, more environmental stress

How infectious disease may have shaped human origins

Homo heidelbergensis was only slightly taller than the Neanderthal

Fossil discovery sheds new light on evolutionary history of higher primates




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