NASA ocean-watch satellite ready for June launch

May 17, 2011
A sunset on the Indian Ocean. The US space agency said Tuesday it is preparing to launch a satellite to observe levels of salt on the surface of the world's oceans and how changes in salinity may be linked to future climate.

The US space agency said Tuesday it is preparing to launch a satellite to observe levels of salt on the surface of the world's oceans and how changes in salinity may be linked to future climate.

The June 9 of Aquarius/SAC-D comes three months after lost Glory, a 424-million-dollar Earth-observing satellite that failed to separate properly from its rocket launcher and plunged into the ocean.

The orbiting will aim to map the entire every seven days from its position 408 miles (657 kilometers) above Earth, producing monthly estimates that show how salt levels change over time and location.

"There are vast tracts of the ocean where salinity has never been collected, ever," said Eric Lindstrom, Aquarius program scientist at NASA, describing the high level of precision expected from the mission.

"We are going to be sampling the whole planet in one week," he told reporters.

While a European satellite was launched in 2009 to measure and ocean salinity, the Aquarius/SAC-D is a global collaboration -- with partner Argentina as well as France, Brazil, Canada and Italy -- that will add to scientists' knowledge of the oceans in novel ways.

"Aquarius will map global variations in salinity in unprecedented detail, leading to new discoveries that will improve our ability to predict future climate," said principal investigator Gary Lagerloef of the Earth & Space Research in Seattle, Washington.

Scientists from the European Space Agency who launched the Soil Moisture and Ocean Salinity (SMOS) mission have been working in parallel and sometimes in partnership with NASA and Argentina's space agency, Comision Nacional de Actividades Espaciales (CONAE) as the two separate missions took shape, he said.

SMOS is a dual-purpose mission whose main focus is soil moisture, while is aimed primarily at measuring , which plays a key role in exchanges of water and heat in the atmosphere.

"It has been a strong cooperative effort," said Lagerloef. "Once we have both of these missions in orbit, we will compare results, we will intercalibrate them," he told reporters.

"We will do a lot of things cooperatively to provide the best information about ocean surface salinity to the scientific community that we possibly can."

The satellite observatory is also to carry seven additional instruments to "collect environmental data for a wide range of applications, including studies of natural hazards, air quality, land processes and epidemiology," NASA said.

Explore further: TRMM Satellite calculates Hurricanes Fay and Gonzalo rainfall

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User comments : 2

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omatumr
1 / 5 (2) May 18, 2011
Congratulations, NASA!

I am pleased that NASA will be collecting vital information on planet Earth.

Please take precautions now to insulate your findings from the whims of politicians, like Al Gore, world leaders and the UN's IPCC.

Scientific results - compromised by politicians who control the purse strings of federal research funds- have destroyed the public's confidence in government science.

Please help protect the cherished values of our free society from the dangers that former President Eisenhower warned about in his 1960 farewell address to the nation:

www.youtube.com/w...ld5PR4ts

With kind regards,
Oliver K. Manuel
Former NASA Principal
Investigator for Apollo
Howhot
3 / 5 (2) May 21, 2011
So, why shouldn't Al Gore receive the same data as any other US citizen? Seriously are you that politically blinded as to deny your fellow citizen access to NASA data? A-hole.