News & Events

Data Announcements

A crop of a time-series plot generated using the PrecipBE Jupyter Notebook shows precipitation rate during a period of the CACTI campaign in Argentina. Image is by Israel Silber, Pacific Northwest National Laboratory.

New Precipitation Best Estimate Data Released for Evaluation

The Precipitation Best Estimate (PrecipBE) product provides time-series data and statistics on precipitation events measured at ground level by ARM.

30 December 2025

A white balloon attached to a tether is seen amid a cloud-filled sky. The balloon platform and truck are parked in an open field surrounded by trees and bushes.

Tethered Balloon System Merged Data Produced for BNF and CoURAGE Flights

This value-added product allows for examination of cloud-base and boundary-layer heights while making it easier to access and use measurements from ARM tethered balloon system missions.

30 December 2025

A cropped 4x3 grid of data plots indicates predicted good, indeterminate, or bad data. Each plot shows aerodynamic particle sizer data, scanning mobility particle sizer data, and merged data from both instruments.

ARM Improves Merged Aerosol Size Distribution Machine Learning Product

New data are now available for the 2023–2024 Eastern Pacific Cloud Aerosol Precipitation Experiment (EPCAPE) from this updated product.

11 December 2025

A screenshot of the browser shows an event summary for 2016-10-22 (open cell cumulus event with relatively small gaps observed between cells) and a regional perspective with a HYSPLIT back trajectory summary and image.

Check Out New LASSO-ENA Simulations and Web Tools

William Gustafson, who leads the Large-Eddy Simulation (LES) ARM Symbiotic Simulation and Observation (LASSO) activity, shares how you can access what is now available for the new Eastern North Atlantic (ENA) shallow marine cloud scenario.

24 November 2025

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