NASA's Aquarius Launched To Help Map the Oceans' Salt
oxide7 writes "NASA launched a satellite featuring an brand-new instrument which will be able to measure the saltiness of Earth's oceans. Data from the Aquarius/SAC-D spacecraft will help scientists understand better the processes that drive ocean circulation and the movement of freshwater around the planet."
But, the ocean is in the other direction!
rewriting history since 2109
I'm all for the benefits that satellite technology has brought to our modern life, but measuring the salinity of the oceans seems to me like something that could probably be done much more economically with direct measurements (i.e. from a boat).
Use your funds more wisely, NASA.
This is Slashdot. It's ok to use words like "salinity" in the summary.
I tried to look up the mechanism of how microwave data is interpreted to give salinity levels, but all I could find in a quick hunt was some IEEE papers which were over my head. Anyone here care to give a summary of the method?
The article below has more technical details than the submitted link:
http://www.spaceflightnow.com/delta/d354/
(Off topic true story: A friend was once head of his college IEEE chapter. A freshman from another country who was just joining brought him a check to cover the membership made out to "I. Tripoli".)
If Slashdot were chemistry it would look like this:Cadaverine
Salinity refers to salt content. Saltiness refers to flavor. It's a pretty clear difference. Now, having read only the summary, can I just say that I'm glad to see the age-old question of "which surf tastes best, and when?" being addressed by NASA.
More info: http://www.conae.gov.ar
"This mission is the most outstanding project in the history of scientific and technological cooperation between Argentina and the United States,"
That's why the acronym is SAC and not SSA (Satélite de Aplicaciones Científicas - Satellite for Scientific Applications). I think it's just another satellite... This was newsworthy in Argentina only because there are very few local satellites (I can only recall past iterations of SAC). Even the president talked about this, "it is a matter of great pride for our people" (elections are near - the uranium enrichment facility is timed for 2 weeks before the presidential election's second round). But generally anything built by INVAP is newsworthy in the country: they are the big guys in engineering so they get all the important government tasks like reactors, submarines, radars, etc.
In soviet russia the government regulates the companies.
Note to NASA:
Please investigate ways of diverting funds away from Mars mission.
NASA:
How about mapping the salt content of the oceans?
Quick question: where are the lines drawn between NASA's and NOAA's responsibilities?
The last two climate satellites were lost due to "Launch Failures". One which was supposed to measure global carbon emissions at the highest resolution to date. I guess this one was not much of a threat to those who deny climate change.
OK, just to clarify the article: the "collaboration" of Argentina in this project consisted in the design, construction, tracking, and operation of the satellite. The SAC-D is an Argentine satellite for the most part, built in collaboration with NASA and France, Italy and Canadian space agencies.
So the aquarius is an instrument on board of an Argentine satellite.
I think the measuring of salinity is a very cool project that could help understand global-scale weather. But the fact that a country considered a "third world" country is building satellites (and also uranium enrichment facilities, nuclear reactors, and many other high-tech things) should be mentioned too.
The Aquarius/SAC-D salinity-sensing instrument is not exactly brand-new. It is an L-band microwave radiometer based on the same principle as the one on the SMOS satellite launched in October 2009. Still, it helps to have more satellites monitoring the oceans.
The operation of the SAC-D/Aquarius is done by Argentina
And the CONDOR operation was done by the US?
Whenever I think of a spacecraft named "Aquarius," I think of the LM that the Apollo 13 astronauts used as a lifeboat to survive the trip back to Earth after their Service Module was damaged after launch. After delivering those astronauts safely back to LEO and being heroically jettisoned into the atmosphere to meet her demise, that spacecraft deserved to have its name retired.
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