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Data Announcements

A 2x2 grid of panels shows North Slope of Alaska (NSA) X-Band Scanning ARM Precipitation Radar (XSAPR) reflectivity and echo masks for widespread precipitation and isolated precipitation. Panels showing cloud streets are not pictured in this cropped image. Plots were created by Marqi Rocque, Pacific Northwest National Laboratory.

ARM Produces First Characterized and Corrected NSA XSAPR Data

The X-Band Scanning ARM Precipitation Radar (XSAPR) at ARM’s North Slope of Alaska (NSA) atmospheric observatory provides valuable dual-polarization measurements of arctic precipitation.

14 April 2026

Six time-height plots of Southern Great Plains (SGP) Ka-Band ARM Zenith Radar (KAZR) general sensitivity (GE) and moderate sensitivity (MD) reflectivity, censor mask, and classification mask highlight the insects in the boundary layer (or biota, as indicated in the classification mask plots) on September 5, 2025. Plots were created by Marqi Rocque, Pacific Northwest National Laboratory.

Characterized, Calibrated Fixed-Site KAZR Data Available for 2025

These newly released data from the Ka-Band ARM Zenith Radar (KAZR) have undergone calibration, correction, and quality control processes beyond ARM’s standard quality checks and corrections.

10 April 2026

A crop of a cloud type plot for the CoURAGE field campaign on April 7, 2025, at the main instrument site in Baltimore, Maryland. Different colors indicate the types of clouds observed. There was a mix of cirrus, cirrostratus, altostratus, altocumulus, deep convection, congestus, and low clouds during the day.

Cloud Type Classification Product Released for CoURAGE and BNF Deployments

The product provides an automated cloud type classification for the Coast-Urban-Rural Atmospheric Gradient Experiment (CoURAGE) in Baltimore, Maryland, and ARM's Bankhead National Forest (BNF) atmospheric observatory in Alabama.

24 March 2026

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.

25 February 2026

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