Schooled in weather radars and quality control, one scientist leads ARM into a new era of data gathering This article continues a series of periodic profiles on scientists who create and apply ARM data. Adam Theisen, ARM instrument operations manager, works at Argonne National Laboratory. Photo is courtesy of Theisen. Atmospheric scientist Adam Theisen, a…

Embedded in sea ice for a year, a shipborne observatory will take a rare look at conditions in the rapidly evolving central Arctic In the Arctic, sea ice extent today is less than half of what it was in 1984. Photo is courtesy of the Alfred Wegener Institute. More than 10 years after the idea…

A 2020 ARM field campaign in Norway will investigate critical but little-understood extrusions of cold air over warm waters ARM instruments on Norway’s Andøya and Bear islands will track and measure cloud regimes prompted by cold-air outbreaks sweeping southward from the ice edge of the Arctic. Map data: Google. In the northernmost reaches of Norway,…

Researchers test instruments and record unique data by flying tethered balloon systems over the Southern Great Plains This is the first article in a series about small campaigns held in 2019 at ARM’s Southern Great Plains atmospheric observatory. A tethered balloon is strung with instruments in the summer of 2019 at ARM’s Southern Great Plains…

Using ARM total sky images, a university team fine-tunes its algorithm to detect ice halos A 22-degree halo—named for its radius around the sun or moon—appears in an all-sky camera image over the University of Minnesota, Morris, campus. Photos are courtesy of Sylke Boyd, University of Minnesota, Morris. When Sylke Boyd needed help finishing a…

The ARM Aerial Facility engineering manager studies the world of clouds and aerosols This is the second in a series of periodic profiles on scientists who create and apply ARM data. ARM Aerial Facility Engineering Manager Jason Tomlinson is based at Pacific Northwest National Laboratory in southeastern Washington state. Photo is courtesy of Tomlinson. During…

Snow ALbedo eVOlution campaign is taking place at ARM’s North Slope of Alaska observatory This video explains the Snow ALbedo eVOlution (SALVO) field campaign taking place on the North Slope of Alaska. Video is by Trevor Grams, University of Alaska, Fairbanks (UAF; now at the National Oceanic and Atmospheric Administration). Near the edge of the…

University of Wyoming researcher is poised to launch his first ARM field campaign This is the first in a series of periodic profiles on scientists who create and apply ARM data. In the summer of 2018, Bart Geerts pauses near the Andøya Space Center Observatory in Norway. Below, at the edge of the Norwegian Sea,…

A veteran scientist investigates how to better explain, detect, and measure the carbonaceous aerosols that influence atmospheric processes This is the seventh article in a series of 2019 profiles on members of the ARM User Executive Committee (UEC). Aerosol researcher Arthur Sedlacek brings a dual perspective—active scientist and instrument mentor—to ARM’s User Executive Committee. Photo…