1 00:00:00,010 --> 00:00:04,170 Only three 2 00:00:04,190 --> 00:00:08,340 percent of water on Earth resides as freshwater. And only a tiny fraction 3 00:00:08,360 --> 00:00:12,520 of that is actually accessible to us on the surface. Seven billion of us live on the 4 00:00:12,540 --> 00:00:16,690 planet. We all have to drink water to live. Where's the water that we drink come from? 5 00:00:16,710 --> 00:00:20,830 By and large: precipitation. Music 6 00:00:20,850 --> 00:00:24,990 GPM is an international satellite mission, providing 7 00:00:25,010 --> 00:00:29,140 a new generation of observations of rain and snow in all parts of the world, 8 00:00:29,160 --> 00:00:33,250 every three hours. If you have good precipitation 9 00:00:33,270 --> 00:00:37,390 information you can do a very good job characterizing drought, and often 10 00:00:37,410 --> 00:00:41,500 its subsequent impact on agricultural productivity. There's about 11 00:00:41,520 --> 00:00:45,580 one major flood a day, someplace in the world. 12 00:00:45,600 --> 00:00:49,640 So it's not as if it's a rare event. Understanding how much snow is 13 00:00:49,660 --> 00:00:53,670 falling is important for transportation, safety, how much 14 00:00:53,690 --> 00:00:57,720 freshwater falls and is stored in snowpacks. What we really need to 15 00:00:57,740 --> 00:01:01,900 focus on is all the phases of precipitation so that 16 00:01:01,920 --> 00:01:06,080 we know what the global picture of where freshwater exists 17 00:01:06,100 --> 00:01:10,230 in the Earth system. [ Rain falling, music ] 18 00:01:10,250 --> 00:01:14,390 [ Rain falling, music ] 19 00:01:14,410 --> 00:01:18,560 20 00:01:18,580 --> 00:01:22,620 21 00:01:22,640 --> 00:01:24,198