Boulder, CO:
Weather Stream today announced the launch of the GEMS2-Amethyst mission, the next chapter in the company’s Global Environmental Monitoring System (GEMS) constellation — a pioneering effort to transform how the world collects, understands, and acts on weather data.
GEMS2-Amethyst follows the landmark success of Weather Stream’s GEMS1 satellite, which made history as the first commercial microwave radiometer ever placed in orbit. That milestone demonstrated Weather Stream’s innovative sensor technology and set the stage for a full constellation capable of monitoring Earth’s atmosphere from the surface to the stratosphere in near real time.
Seeing the World Through Microwaves
Unlike optical and infrared sensors that are blinded by clouds or darkness, Weather Stream’s passive microwave radiometer technology sees through both. GEMS2A will capture three-dimensional temperature and humidity profiles across a nearly 2000 km wide swath, delivering the kind of rich atmospheric data that meaningfully improves the accuracy of numerical weather predictions.
The constellation is designed to match the capabilities of current operational weather satellites at a fraction of the cost.
Why It Matters
Accurate, timely weather data saves lives, protects infrastructure, and supports critical decisions across agriculture, aviation, energy, and emergency management. Weather Stream’s satellite technology makes global-scale environmental monitoring accessible in ways that were previously impossible for commercial operators.
GEMS2A represents a significant expansion of that mission, bringing Weather Stream closer to its vision of a fully operational constellation providing persistent, all-weather coverage of the global atmosphere.