A committee of prominent Earth scientists has recommended that the US government fund 17 new Earth-observing missions over the next decade. Without these steps, they say, researchers could be left for years without critical data on climate change. "Gaps in these measurements could be fatal," warns committee co-chair Richard Anthes, president of the University Corporation for Atmospheric Research in Boulder, Colorado.
The panel urged that roughly US$500 million be restored to NASA's Earth-observing budget, and that several cancelled scientific instruments be reinstated on satellites already in the works — by the National Oceanic and Atmospheric Administration (NOAA) and other agencies.
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The number of earth-observing missions could drop by a third between 2006 and 2010, if funding continues at expected levels. The loss of existing capabilities would leave scientists without data to feed models of climate change — perhaps leaving us unprepared to face future climate shifts. In response, the report recommends restoring several key elements of America's Earth-observing capability, including the boost to NASA, which has been cutting back on Earth-observing missions to make room for other programmes. Some of the recommendations involve flying follow-up versions of current spacecraft, such as the ICESat mission to measure ice-sheet height and the GRACE gravity mission to monitor long-term changes in water distribution.
The panellists also recommended restoring instruments to the multi-agency National Polar-orbiting Operational Environmental Satellite System (NPOESS), currently due to be ready for launch in 2013. Last summer, citing cost overruns, project managers slashed, among other things, instruments that would measure wind direction and sea-surface temperature. But such measurements are critical to understanding and predicting global weather phenomena such as El Niño, the committee says.
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http://www.nature.com/news/2007/070115/full/070115-5.html