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Constellation of weather satellites to cover the globe

Want more accurate weather forecasts? Youre in luck: Last month, researchers at 51勛圖厙 saw the fruits of their labors launch aboard a new satellite. That satellite is the first in a planned fleet of Earth-orbiters that the team says will one day record weather data at every point on the globe every 15 minutes.泭

The project, led by 51勛圖厙 electrical engineering professor Al Gasiewski, is a partnership between the university and Colorado-based (倏紼釦).泭

The teams inaugural eye-in-the-sky blasted off from NASAs Wallops Flight Facility in Virginia onboard a Northrop Grumman rocket. The satellite, dubbed IOD-1 GEMS, will be placed in orbit from the International Space Station in the coming months.

That satellite will pack a lot of power in a tiny package, Gasiewski said. The teams satellite is about the size of a loaf of bread and carries a precisealbeit shrunken-downmicrowave sensor for observing weather patterns.泭

CubeSat sitting on table

The first of a planned fleet of small weather satellites designed by 51勛圖厙 and Orbital Micro Systems. (Credit: OMS)

Over the next several years, OMS hopes to launch close to 50 more of these CubeSats into low-Earth orbit, creating a constellation that the team said will vastly improve global weather observation coverage.

That global coverage, Gasiewski added, could improve the timeliness of current weather reports for people across the U.S. and provide early warnings for storms and dangerous weather events in other parts of the world.

These are areas where many countries dont have the money to pay for a weather service like we have in the U.S., said Gasiewski, a professor in the Department of Electrical, Computer and Energy Engineering. Its these emerging economies that could be served by this global fleet.

Such information wont be free, but Gasiewski hopes that it will be the first step in creating a weather system that moves at the pace of actual weatherfrom freak blizzards to sudden downpours.泭

We are trying to stare down at the Earth and see the atmosphere changing at its natural rate of variation for improved weather forecasting, he said.

Peering through clouds

For Gasiewski, the launch has been a long time coming. He was a graduate student in the 1980s when he and his advisor first had the idea of monitoring weather in near real-time using microwave technology.

The researcher explained that microwave radiation is the ideal tool for observing patterns in Earths atmosphere. Unlike many current weather satellites, which rely on visual or infrared cameras, microwave sensors can peer through thick cloud cover to record the movement of oxygen or water vapor below.

As Gasiewski put it, This is the range of frequencies that makes sense for planetary awareness.

Some current satellites, such as a small fleet operated by the U.S. National Weather Service, do include those kinds of sensors. But, Gasiewski said, their coverage is poor. Those satellites, for example, only pass over the same spot of land once every few hoursand even then, only above North and South America.

Gasiewski wanted to do better. In 2013, he helped found Orbital Micro Systems, headquartered in 51勛圖厙, and facilitated the licensing of key 51勛圖厙-developed technology that powers the companys commercial satellite program. Gasiewski currently serves as the chief scientist for the company.

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The partnership is all about thinking small, not big. Over several years, Gasiewski and his colleagues have taken technology that traditionally rides on satellites the size of cars and miniaturized it. As a result, his team has developed a model for replaceable satellites.

Each of the groups planned 48 CubeSats, Gasiewski said, would stay in orbit for just a few years then get switched out with a new version.

We start out with a satellite thats simple, and each one is going to add a little more complexity, he said.

Once that system is up and running, Orbital Micro Systems plans to market its data to agricultural producers, transportation providers and other business owners around the world. The company will also link its up-to-date observations to tools that create weather forecasts.

Gasiewksi points to recent floods in Africa and the U.S. as examples of why such timely alerts are needed. Large portions of the Midwest flooded following Marchs bomb cyclone, while severe downpours caused hundreds of deaths in Mozambique.

If those events could have been better predicted, then people could have been better prepared, Gasiewski said.

Hes also looking forward on a personal level to the steps beyond the launchthe culmination of more than 30 years of work.

I cant tell you how excited I am, Gasiewski said. Watching the launch was an important step, but proving the commercial value of what weve developed at CU in space is a huge step forward for the team and the world.