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Cloud Condensation Nuclei Vertical Profile Data Product Extended to ENA
This sample plot from ARM’s Eastern North Atlantic atmospheric observatory shows the retrieved number concentration of cloud condensation nuclei at 0.4% supersaturation for April 1, 2023. Data plot is by Gourihar Kulkarni, Pacific Northwest National Laboratory. The Retrieved Number concentration of Cloud Condensation Nuclei value-added product (RNCCN VAP) is now available for evaluation for the…
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Users Ask for New Arctic Aerosol Measurements, and ARM Listens
ARM installs set of aerosol instruments at neighboring NOAA facility in Utqiaġvik, Alaska ARM aerosol instruments are now installed at a NOAA facility at Utqiaġvik, Alaska, near ARM’s North Slope of Alaska atmospheric observatory. The instruments are an aerosol chemical speciation monitor (taking up most of this rack), an aerodynamic particle sizer (on a shelf…
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New Merged Product Integrates G-1 Flight Data
Aerosol concentration data from the G-1 ultrafine condensation particle counter are shown for an approximately three-hour flight on December 8, 2018, near Córdoba, Argentina, during the CACTI campaign. Image is from Krista Gaustad, Pacific Northwest National Laboratory. From 2010 until its final science mission in 2018, the Gulfstream-159 (G-1) aircraft served as the Atmospheric Radiation…
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New Plan Details ARM’s Aerosol Priorities for Fiscal Year 2025
This ARM Aerosol Observing System (AOS) is now collecting data in Alabama. ARM’s aerosol operations plan for fiscal year 2025 includes information on AOS operations in Alabama and at other ARM sites. Photo is by Mark Spychala, Argonne National Laboratory. The Atmospheric Radiation Measurement (ARM) user facility has released its aerosol operations plan for fiscal…
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ARM Data Services Completes Successful Fiscal Year 2024
Editor’s note: This is an update from ARM Chief Data and Computing Officer Giri Prakash. Photo of Giri Prakash is from Oak Ridge National Laboratory. I am pleased to share an overview of ARM Data Services’ significant accomplishments during fiscal year 2024 (FY2024). First and foremost, I extend my gratitude to the ARM staff and…
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Soak Up the Sun: ARM Staff Participate in Pyrheliometer Comparisons
Event in Colorado helps participants calibrate reference instruments to world standard This photo shows the side of a solar tracker and cavity pyrheliometers that ARM staff brought to Golden, Colorado, for the 24th National Renewable Energy Laboratory (NREL) Pyrheliometer Comparisons (NPC) in September 2024. The instruments are used to calibrate ARM’s pyrheliometers and pyranometers during…
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Hydrometeor Field Spatial Statistics Derived From Radar Scans
A new evaluation data set, Plan Position Indicator (PPI) Hydrometeor Field Statistics (PPIHYD), provides spatial statistics based on distinct (clustered) hydrometeor fields from radar scans. By leveraging information harvested from Atmospheric Radiation Measurement (ARM) user facility scanning radar measurements, statistics such as spatial moments and percentiles are calculated for radar reflectivity and Doppler spectral width…
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Micropulse Lidar Cloud Mask Machine Learning VAP Released for SAIL, CAPE-k
This sample quicklook plot from the SAIL ARM Mobile Facility site shows the log of the normalized relative backscatter (log10 NRB), linear depolarization ratio (LDR), and cloud mask from the MPLCMASKML value-added product for March 16, 2022. In addition, the plot contains the machine learning model’s confidence in its prediction, as well as cloud base…
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New 2- and 3-Channel Microwave Radiometer Retrieval Data Produced
This MWRRET quicklook image provides information from the 2-channel microwave radiometer that operated on the Ellen Browning Scripps Memorial Pier in La Jolla, California, during the EPCAPE campaign on December 14, 2023. The image shows, from top to bottom, observed brightness temperatures at 23.8 GHz (blue) and 31.4 GHz (red); retrieved precipitable water vapor from…
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Lagrangian Large-Scale Forcing Data Released for MOSAiC
The figure provides a time series of vertical velocity (top), horizontal temperature advection (middle), and horizontal moisture advection (bottom) produced by ARMLAGTRAJ for the MOSAiC expedition from November 11 to 21, 2019. Figure is from Cheng Tao, Lawrence Livermore National Laboratory. A new Lagrangian trajectory-based large-scale forcing data product from the Atmospheric Radiation Measurement (ARM)…