Follow up On Fate of TRMM

August 6th, 2004

Posted by: Roger Pielke, Jr.

NASA issued a press release today detailing a reprieve of sorts for the TRMM satellite. (For our earlier discussions of this topic see this post. The press release states that “NASA will extend operation of the Tropical Rainfall Measuring Mission (TRMM) through the end of 2004, in light of a recent request from the National Oceanic and Atmospheric Administration (NOAA).”

But the press release also states that “NASA and NOAA have asked the National Academy of Sciences to convene a workshop next month to advise NASA and NOAA on the best use of TRMM’s remaining spacecraft life; the overall risks and benefits of the TRMM mission extension options; the advisability of transfer of operational responsibility for TRMM to NOAA; any requirement for a follow-on operational satellite to provide comparable TRMM data; and optimal use of GPM, a follow-on research spacecraft to TRMM, planned for launch in 2011.”

This statement seems a bit odd to me because it appears that NASA has already decided when and how to deorbit TRMM. And it seems unnecessary to convene a workshop in September to provide advice on how to use TRMM for its last 2 months (through November) after 7 years of successful operations. NASA and the scientific community know very well how to use TRMM.

The press release includes this statement, which seems to contradict the above, from Dr. Ghassem Asrar, Deputy Associate Administrator of NASA’s Science Mission Directorate, “It’s important to note that we are able to extend TRMM for this brief period and are vigilant in maintaining our requirement for a safe, controlled re-entry and deorbit of the spacecraft.” So what role exactly will the NRC Workshop play?

One concern is that the NRC Workshop will be used to provide a post-hoc rationalization for decisions already made about the future of TRMM. If so, then this would amount to a form of politicization of the NRC. By paying attention to who is invited to participate in this workshop (and who is not) we can get a sense of what perspectives are being advanced and which are not. As I have argued here in an earlier post the NRC would be better served by not recommending a single option, but a diversity of choices and their implications for decision makers to consider.

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