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TRACER Intensive Operational Period Officially Begins
On June 1, the TRacking Aerosol Convection interactions ExpeRiment (TRACER) officially entered its four-month intensive operational period. During this period, ARM will host many guest campaigns and interagency collaborations at the TRACER sites around Houston, Texas. (Read more about the work happening this summer in this ARM article.) Click below to watch a time-lapse video…
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Location Update: 2022 ARM/ASR Joint Meeting
We now have DOE approvals to hold the 2022 Joint ARM User Facility/ASR Principal Investigators Meeting as an in-person/hybrid meeting. The meeting will be held from October 24 to 27 in Rockville, Maryland. More information about the meeting will be provided in the ARM/ASR newsletters and on the ARM/ASR websites as soon as it is…
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LASSO-CACTI Beta Release Available
Editor’s note: William Gustafson, principal investigator for the Large-Eddy Simulation (LES) ARM Symbiotic Simulation and Observation (LASSO) activity, sent in this update. The LASSO team is producing a new scenario focusing on high-resolution simulations of deep convection during the Cloud, Aerosol, and Complex Terrain Interactions (CACTI) field campaign. These simulations will complement the campaign’s large…
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New Aerosol Hygroscopicity Kappa Data Released for 3 ARM Sites
Hygroscopicity is the ability of a particle to take up moisture from the environment and is important for understanding the formation of cloud condensation nuclei (CCN). New data from a value-added product (VAP) that calculates the hygroscopic properties of measured aerosol particles are available for three Atmospheric Radiation Measurement (ARM) user facility sites. The CCN…
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ARM Instruments and Data Products Update: Aerosol Advancements
Editor’s note: This is an update from ARM Engineering and Process Manager Jennifer Comstock, who also oversees ARM science products. Aerosol processes play an important role in the Earth’s radiative energy budget, which continues to be a source of uncertainty in climate model simulations. ARM measurements and data products of aerosol chemical, microphysical, and optical…
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City of Storms Gets an Intensive Look
A focused measurement effort on convective activity around Houston, Texas, begins in June Houston, Texas, is a subtropical metropolis of 2.3 million people. Thunderstorms in or near the city occur every month. But nature delivers convective storms most frequently during summers. That’s when reservoirs of warm, moist air from the Gulf of Mexico clash with…
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First Routine Ice-Nucleating Particle Data Available From ARM Sites in Alaska, Oklahoma
The Atmospheric Radiation Measurement (ARM) user facility now provides routine data sets on ice-nucleating particles (INPs) from the third ARM Mobile Facility (AMF3) at Oliktok Point, Alaska, and from the Southern Great Plains (SGP) atmospheric observatory. These are the first routine INP data available through ARM for users to access for observational and modeling investigations.…
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Access New Ice-Nucleating Particle Data From Eastern North Atlantic Campaign
Only a subset of atmospheric particles, known as ice-nucleating particles (INPs), can initiate ice formation in the atmosphere. An improved understanding of the characteristics of INPs and their role in ice cloud formation can reduce a source of uncertainty in climate projections. To help improve the modeling of ice formation in the atmosphere, researchers collected…
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ARM Marks 30 Years of Collecting Atmospheric Data
Starting in 1992, the user facility has pioneered continuous measurements of Earth’s fragile protective shell of gases and clouds This is the first article in a yearlong series of stories on the evolution of ARM―its data, science missions, instruments, field campaigns, and people. Gerry Stokes was ARM’s first chief scientist (1990 to 1998) and played…
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Recognizing 30 Years of ARM Data—Be an ARM Storyteller!
May 16, 2022, is the 30th anniversary of the first data collected at ARM’s Southern Great Plains atmospheric observatory. Over the coming year, ARM will publish an “ARM30” series of articles, which will reflect on the science impacts of ARM data over the past 30 years while looking ahead to the facility’s future. As part…