A Short History of STEVE

Monday, May 4, 2020 - 15:30 in Earth & Climate

A citizen scientist working with NASA's Aurorasaurus project has unearthed an exciting piece of scientific history. In the writings of early 20th-century aurora explorer Carl Størmer, citizen scientist Dr. Michael Hunnekuhl noticed mentions of “feeble homogeneous arcs of great altitude” and recognized them as descriptions of the subauroral phenomenon STEVE (Strong Thermal Emission Velocity Enhancement). STEVE stands for Strong Thermal Emission Velocity Enhancement. And it looks awesome!  Credit: Catalin Tapardel STEVE is a rare, mysterious, glowing purple arc that runs east to west and occurs closer to the equator than the Northern and Southern Lights. STEVE had been observed for years, but it remained obscure until Aurorasaurus collaborated with Canadian citizen scientists and other scientists to publish the first scientific paper describing it. The discovery made global headlines and inspired new investigations. Hunnekuhl's role as a citizen scientist echoes history. Back in his day, Størmer put out calls in newspapers and over the...

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