Assessment of the Benefits of Extending the Tropical by National Research Council, Division on Earth and Life

By National Research Council, Division on Earth and Life Studies, Board on Atmospheric Sciences and Climate, Committee on the Future of the Tropical Rainfall Measuring Mission

Introduced together in 1997 via the nationwide Aeronautics and area management (NASA) and the Japan Aerospace Exploration organization (JAXA), the Tropical Rainfall Measuring venture (TRMM) is a satellite tv for pc project that put a special suite of tools, together with the 1st precipitation radar, in house. those tools are used to observe and expect tropical cyclone tracks and depth, estimate rainfall, and computer screen weather variability (precipitation and sea floor temperature). TRMM has been amassing facts for seven years: this knowledge is utilized by the Joint storm caution heart, the nationwide middle for Environmental Prediction, and the nationwide storm heart, between others world wide. In July 2004, NASA introduced that it'll terminate TRMM in August 2004. on the request of the nationwide Oceanic and Atmospheric management (NOAA), the White condominium, and the technology group, NASA agreed to proceed TRMM operations in the course of the finish of 2004. in the meantime, NASA requested a countrywide study Council (NRC) committee to supply recommendation at the advantages of retaining TRMM in operation past 2004. After conserving a workshop with a few specialists within the box, the committee stumbled on that TRMM will give a contribution considerably to operations and technological know-how if the undertaking is prolonged; and for that reason, strongly recommends endured operation of TRMM with the caveat that price and threat might want to be additional tested prior to a last selection concerning the way forward for TRMM may be made.

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Additional info for Assessment of the Benefits of Extending the Tropical Rainfall Measuring Mission: A Perspective from the Research and Operations Communities, Interim Report

Sample text

To 402 km. Jan-05 Jan-07 Date (Mon-YY) Jan-06 Jan-08 Jan-09 Jan-10 Jan-11 No August 2001 Boost Jan-12 Jan-13 138 kg. PVT Actual Propellant Remaining March 2004 PlusEarly March 2004 PlusLate March 2004 MeanNom FIGURE 2-1 Fuel (“propellant”) levels aboard the TRMM satellite and projected rate of decrease (March 2004 projections). The horizontal line marked “138 kg” indicates the critical fuel level below which reentry cannot be controlled. When the fuel level reaches zero, the ability to make orbital adjustments is lost, the TRMM data stream degrades, and driftdown begins.

In addition, the expected contributions are separated into anticipated research and operations contributions. The elaborations in this chapter, working from the specific to the general, mirror the outline of Table 4-1. ANTICIPATED CONTRIBUTIONS WHEN CONTROLLED REENTRY IS STILL POSSIBLE Anticipated Operational Contributions Another Year of PR and TMI Data for Tropical Storm Monitoring and Forecasting Another year’s worth of TMI and PR data would be valuable to the National Oceanic and Atmospheric Administration (NOAA) and recipients of its forecasts for the same reasons expressed by Vice Admiral Lautenbacher to Dr.

Department of Defense’s Operational Uses of TRMM • Monitoring tropical cyclones using TMI at the Joint Typhoon Warning Center (JTWC). 23 JTWC has used TMI data served through the 21Personal communication from Carolyn Kloth, Aviation Weather Center, NOAA, November 2004. 22Upwelling can reduce sea surface temperature by 1-6°C. 23For example, “On several occasions TRMM passes over a [tropical cyclone] led to storm relocation and changes in intensity for our typhoon warnings” (Lt Col Amanda Preble, Director, JTWC, 2004).

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