These Satellites See Through the Clouds to Track Flooding

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These Satellites See Through the Clouds to Track Flooding
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You can think of SAR as being like a “flashlight” that illuminates what your eyeballs can’t make out on their own.

. But finding water where it shouldn't be is a perfect task for these satellites. Sometimes, telling the difference between land and water from far away—literally just determining whether a spotflooded—is the hardest part. But water and land scatter microwaves very differently, providing precise maps of where liquid has intruded upon what’s supposed to be solid, even during the most opaque part of the storm.

Schwarz and her cofounder, Beth Tellman, have been working on Cloud to Street for about a decade. They met in 2012, on their first day of graduate school at what’s now called the Yale School of the Environment. Schwarz had been working in policy, focusing on communities vulnerable to climate change, and Tellman had been doing community projects in the wake of natural disasters. They’d both seen, firsthand, what happened when people didn’t have the disaster information they needed.

Initially, Cloud to Street’s customers were governments, their disaster arms, and organizations like the World Bank, helping them figure out who needed to be relocated and where and giving them evidence they could use to lobby for additional relief funds. Today, Cloud to Street also works on more corporate pursuits, helping insurance companies tap out their risk and payout calculations. Either way, says Schwarz, they will need SAR.

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