Not all streams and lakes have gauges and previous space-based altimetry and gravitational measurements, though useful for large bodies of water, have not been able to adequately track the constant movement of water through smaller rivers or lakes. Until now, most monitoring of river flow and lake levels has relied on water-flow and water-level gauges placed across Earth, which requires that they be accessible and maintained. But monitoring Earth’s surface water in great detail with enough frequency to track water movement has proven challenging. River flow monitoring can also help us make inferences about the downstream environmental impact. Monitoring of river flow and lake volume is important because it can tell us how much freshwater is readily available and at what locations. These include stream and lake gauges and even measurements from space such as sea surface altimetry and gravitational measurements of aquifer volumes. Scientists use a variety of methods to track Earth’s water. Credit: NASA/JPL-Caltech | Watch on YouTube Water Flow Scientists and engineers provide an overview of the SWOT mission. Read on to find out why we're hoping to learn more about Earth's surface water, get to know the science behind SWOT's unique design, and follow along with STEM teaching and learning resources. By providing us with a highly detailed 3D view of rivers, lakes, and oceans, SWOT promises to improve our understanding of Earth’s water cycle and the role oceans play in climate change, as well as help us better respond to drought and flooding. 16 from Vandenberg Space Force Base in California, the Surface Water and Ocean Topography, or SWOT mission is the latest international collaboration designed to monitor and report on our home planet. NASA is launching an Earth-orbiting mission that will map the planet’s surface water resources better than ever before.
Visit NASA's SWOT launch blog for the latest updates. EST) on Friday, Dec.16, for the launch of the Surface Water and Ocean Topography (SWOT) satellite.
15, 2022 – NASA, the French space agency, and SpaceX are now targeting 3:46 a.m. Explore how and why the SWOT mission will take stock of Earth's water budget, what it could mean for assessing climate change, and how to bring it all to students.
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