Steven Wofsy explains the significance of the HIPPO missions (see http://www.ucar.edu/news/releases/2009/hippo.jsp ), which allow scientists to look at the whole globe at once in great detail. When the project is complete, scientists will have a new picture of how greenhouse gases are entering and exiting the atmosphere as a result of natural processes and human activities. Steven Wofsy is a Harvard University scientist and HIPPO principal investigator.
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