nym COPES (Coordinated Observation and Prediction of the Earth System) in which satellite-derived precipitation measurements will represent a key element. The role of TRMM data will be essential in this undertaking.

In view of the above, various messages of support for TRMM continuation have already been sent to your agencies by the Director of WCRP, the Chairman of GEWEX, and many others in the WCRP scientific community. However, in view of the importance of the matter and the urgency of the situation for a large scientific community relying on your programmes, we felt compelled to personally send this letter to you at the highest management level. On behalf of WCRP, we would highly appreciate any option NASA and JAXA may consider to maintain the TRMM operation as long as reasonably feasible.

We thank you in advance for any action you can take on this matter.

Yours sincerely,

Peter Lemke

Chair, JSC for the WCRP

John Church

Vice-Chair, JSC for the WCRP

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