News & Events

The Atmospheric Radiation Measurement (ARM) User Facility produces news and features, data announcements, event announcements, and highlights about its activities to keep users informed.

Radars operate in front of a cloud-filled backdrop.

Job Openings on ARM’s Radar Team: Apply Today

27 February 2026

ARM is expanding its radar team to support ongoing operations and new capabilities, as well as advance the utility of ARM radar data for scientific applications.

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News

In La Jolla, California, clouds streak across the sky while ARM radars, guest instruments, and containers on Mount Soledad overlook the nearby area, including the Pacific Ocean, during the EPCAPE campaign.

EPCAPE Data Could Hold Key to New Understanding of Cloud Droplet Formation

Measurements taken during ARM’s 2023–2024 Eastern Pacific Cloud Aerosol Precipitation Experiment (EPCAPE) in La Jolla, California, could help transform understanding of the fundamental mechanisms involved in cloud droplet formation.

19 February 2026

ARM Workshop Report Explores Weather Impacts on Energy and National Security

The report summarizes a November 2025 workshop in which participants discussed how ARM observations can improve understanding of risks to the nation’s energy and security infrastructure.

28 January 2026

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Features

Four map panels, with the two on the left including a star to indicate ARM observation sites within specified domains and the two on the right including an airplane with orange lines to indicate aircraft tracks over oceans

Researchers Apply ARM Data to Refine Aerosol-Cloud Interaction Simulations

A recent paper uses observations from ARM and other field campaigns to evaluate simulations from the U.S. Department of Energy's Energy Exascale Earth System Model at kilometer-scale resolution.

18 February 2026

CoURAGE Campaign Closes

A yearlong effort in and around Baltimore, Maryland, reveals insights into atmospheric interactions across urban, rural, and coastal areas.

28 January 2026

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Data Announcements

A grid of eight maps shows daily geopotential heights (meters, contours) and anomalies (colors) at 500 hPa at 05:00 UTC for eight self-organizing map nodes. Nodes 0, 1, 2, 3, 4, and 5 are anticyclonic regime; node 6 is zonal regime; and node 7 is post-trough. Maps are provided by Aifang Zhou, Brookhaven National Laboratory.

Synoptic Weather Regime Classification Product Now Available for CoURAGE Campaign

This machine learning value-added product for the 2024–2025 Coast-Urban-Rural Atmospheric Gradient Experiment (CoURAGE) provides key insights into the variability of large-scale circulations over the Baltimore, Maryland, region.

14 February 2026

New Aerosol Optical Depth Data Available for SGP and NSA

The Aerosol Optical Depth (AOD) value-added product derived from 7-channel normal incidence multifilter radiometer measurements is now available for the Southern Great Plains (SGP) and North Slope of Alaska (NSA) atmospheric observatories.

9 February 2026

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Events & Meetings

2026 AMS Presentations Featuring ARM Data

The 2026 American Meteorological Society (AMS) Annual Meeting will be held from January 25 to 29 in Houston, Texas, and online.

21 January 2026

ARM 2026 Summer School: Big Open Data Science

ARM will host an open science-focused summer school from May 18 to 22, 2026, at the National Weather Center in Norman, Oklahoma.

20 January 2026

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Publications

The Bankhead National Forest Aerosol Observing System (left) and Ka-Band ARM Zenith Radar (on the roof of the instrument container to the right) are shown on a cloudy day. The forest is visible above and between the instrument containers.

New ARM Plans Detail FY2026 Priorities for Radars and Aerosol Instruments

A pair of fiscal year 2026 (FY2026) planning documents also describe progress related to two of ARM’s most critical instrument suites.

26 January 2026

ARM Fiscal Year 2025 Radar Plan Outlines Operational, Data Priorities

ARM’s newest radar plan outlines how engineering and data staff are prioritizing their time and effort in fiscal year 2025 to help ensure continued operational excellence of ARM’s radars.

13 February 2025

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