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Well, with a near 20-year record of rain and snow, we now have the most detailed view of our daily weather from space.

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Hi, my name is Dalia Kirschbaum. I'm a research scientist here at NASA's Goddard Space Flight Center in Greenbelt,

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Maryland.

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We know that as the climate changes, the wet areas will get wetter and the dry areas dryer. We also know that these

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changes aren't uniform, and so clues from the past can help us get a better sense of how precipitation may move and change in

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the future.

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One advantage of being able to look back 20 years, is we can look at the changing patterns in El Nino, which cause some areas to

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get wetter in some dryer. So with this long and accurate record, we can test climate models using observations of the past

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to better predict what the future might hold.

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We have so many

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tools and data sets at NASA that can help people around the world and the fact that all of this data is free and open

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creates this powerful tool for people to use to make more effective decisions or learn more about their environment

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every day.