Written by Alan Buis
Pasadena, CA – Fresh off the recent successful deployment of its 20-foot (6-meter) reflector antenna and associated boom arm, NASA’s new Soil Moisture Active Passive (SMAP) observatory has successfully completed a two-day test of its science instruments.
The observatory’s radar and radiometer instruments were successfully operated for the first time with SMAP’s antenna in a non-spinning mode on February 27th and 28th.
The test was a key step in preparation for the planned spin-up of SMAP’s antenna to approximately 15 revolutions per minute in late March.
Written by Alan Buis
Pasadena, CA – Five new NASA airborne field campaigns, including one managed by NASA’s Jet Propulsion Laboratory, Pasadena, California, will take to the skies starting in 2015 to investigate how long-range air pollution, warming ocean waters and fires in Africa affect our climate.
These studies into several incompletely understood Earth system processes were competitively selected as part of NASA’s Earth Venture-class projects. Each project is funded at a total cost of no more than $30 million over five years. This funding includes initial development, field campaigns and analysis of data.
Written by Carol Rasmussen
Pasadena, CA – If we had a second Earth, we could experiment with its atmosphere to see how increased levels of greenhouse gases would change it, without the risks that come with performing such an experiment. Since we don’t, scientists use global climate models.
In the virtual Earths of the models, interlocking mathematical equations take the place of our planet’s atmosphere, water, land and ice. Supercomputers do the math that keeps these virtual worlds turning — as many as 100 billion calculations for one modeled year in a typical experiment. Groups that project the future of our planet use input from about 30 such climate models, run by governments and organizations worldwide.
NASA’s AIM spacecraft data shows Teleconnections in Earth’s Atmosphere linking Climate and Weather across the Globe
Written by Tony Phillips
Washington, D.C. – Earth’s poles are separated by four oceans, six continents and more than 12,000 nautical miles.
Turns out, that’s not so far apart.
New data from NASA’s AIM spacecraft have revealed “teleconnections” in Earth’s atmosphere that stretch all the way from the North Pole to the South Pole and back again, linking weather and climate more closely than simple geography would suggest.
Written by Rachel Hoover
Mountain View, CA – NASA’s Global Hawk research aircraft returned to its base at NASA’s Armstrong Flight Research Center at Edwards Air Force Base, CA, early Friday morning March 14th, marking the completion of flights in support of this year’s Airborne Tropical Tropopause Experiment (ATTREX), a multi-year NASA airborne science campaign.
On February 13th, the autonomously operated aircraft began conducting science flights from Andersen Air Force Base on Guam in the western Pacific region on a mission to track changes in the upper atmosphere and help researchers understand how these changes affect Earth’s climate.
NASA’s Goddard Institute for Space Studies
Greenbelt, MD – NASA scientists say 2013 tied with 2009 and 2006 for the seventh warmest year since 1880, continuing a long-term trend of rising global temperatures.
With the exception of 1998, the 10 warmest years in the 134-year record all have occurred since 2000, with 2010 and 2005 ranking as the warmest years on record.
NASA Scientists use Global Hawk aircraft to track atmosphere changes that affect the climate of Earth
Written by Rachel Hoover
Moffett Field, CA – NASA’s uncrewed Global Hawk research aircraft is in the western Pacific region on a mission to track changes in the upper atmosphere and help researchers understand how these changes affect Earth’s climate.
Deployed from NASA’s Dryden Flight Research Center in Edwards, CA, the Global Hawk landed at Andersen Air Force Base in Guam Thursday at approximately 5:00pm EST and will begin science flights Tuesday, January 21st. Its mission, the Airborne Tropical Tropopause Experiment (ATTREX), is a multi-year NASA airborne science campaign.
A quick glance at a world precipitation map shows that most tropical rain falls in the Northern Hemisphere. The Palmyra Atoll, at 6 degrees north, gets 175 inches of rain a year, while an equal distance on the opposite side of the equator gets only 45 inches. Scientists long believed that this was a quirk of the Earth’s geometry – that the ocean basins tilting diagonally while the planet spins pushed tropical rain bands north of the equator. But a new University of Washington study shows that the pattern arises from ocean currents originating from the poles, thousands of miles away.
The findings, published Oct. 20 in Nature Geoscience, explain a fundamental feature of the planet’s climate, and show that icy waters affect seasonal rains that are crucial for growing crops in such places as Africa’s Sahel region and southern India.
Moffett Field, CA – Global models of the climate system are now the foundation for many important climate studies, but they typically show climate changes at very large geographic scales on the order of 100 to 250 kilometers. Some data sets have scaled that down to about 10 kilometers, but even these make it difficult to analyze climate change impacts on a local or regional scale.
Using previously published large-scale climate model projections, a team of scientists from NASA, the Climate Analytics Group, Palo Alto, CA, a non-profit that provides climate data services, and California State University, Monterey Bay, has released monthly climate projections for the coterminous United States at a scale of one half mile (800 meters), or approximately the size of a neighborhood.
Space Center, FL – Researchers hope NASA’s latest solar observatory will answer a fundamental question of how the sun creates such intense energy.
Scheduled to launch June 27th, the IRIS spacecraft will point a telescope at the interface region of the sun that lies between the surface and the million degree outer atmosphere called the corona. It will improve our understanding of how energy moves from the sun’s surface to the glowing corona, heating up from 6,000 degrees to millions of degrees.
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