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New Cloud Radar Product Available From EPCAPE and CAPE-k Campaigns
The three images illustrate the KAZRARSCL EPCAPE product for September 10, 2023. From top to bottom are time-versus-height displays of cloud boundaries, hydrometeor best-estimate reflectivity (after clutter removal), and mean Doppler velocity (the negative sign indicates motion toward radar). Images are from Karen Johnson, Brookhaven National Laboratory. The Atmospheric Radiation Measurement (ARM) User Facility has…
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Improved Broadband Radiation Data Available from Multiple ARM Sites
ARM radiometers operate near Lamont, Oklahoma. ARM file photo. The Atmospheric Radiation Measurement (ARM) User Facility processes yearly data from the Data Quality Assessment for ARM Radiation Data (QCRAD) product—the recommended ARM datastream for broadband surface irradiance measurements—to produce level 2 (c2) files. These files undergo additional processing to improve the data. New QCRAD c2-level…
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Areal-Averaged Surface Albedo Product Now Baseline
This ArealAveAlb quicklook image from the EPCAPE campaign in La Jolla, California, provides the estimated surface albedo at the five multifilter rotating shadowband radiometer frequencies (top). Because of albedo’s sensitivity to cloud cover and precipitation, plots of input data—cloud type, cloud optical depth, and precipitation—are also included underneath the albedo plot. Image is provided by…
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New and Updated Cloud Droplet Number Concentration Data Available
This sample plot shows droplet number concentration from the EPCAPE ARM Mobile Facility site in La Jolla, California. Image is provided by Chitra Sivaraman, Pacific Northwest National Laboratory. The Droplet Number Concentration value-added product (NDROP VAP) has been processed for the 2023–2024 Eastern Pacific Cloud Aerosol Precipitation Experiment (EPCAPE) in La Jolla, California. In addition,…
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Large-Scale Forcing Data Released for EPCAPE Campaign
The map shows the variational analysis domain for the sigma version of VARANAL for the EPCAPE field campaign. Enclosed by the black dots, the domain is centered at the ARM Mobile Facility site (red star) on the Ellen Browning Scripps Memorial Pier in La Jolla, California. Also shown is the variational analysis domain for the…
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New Lidar Evaluation Data Product Provides Aerosol Features
The plot shows the aerosol features identified from the high-spectral-resolution lidar (HSRL) at the Southern Great Plains (SGP) atmospheric observatory on November 9, 2020. Panel a shows the particulate backscatter coefficient, and panel b is the associated signal-to-noise ratio (SNR). Panel c is the reflectivity factor from the Ka-Band ARM Zenith Radar (KAZR), and panel…
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Improved Broadband Irradiance Data Released for EPCAPE Campaign
ARM radiometers are visible on the roof of an ARM Mobile Facility instrument container on the Ellen Browning Scripps Memorial Pier in La Jolla, California. The pier hosted ARM instruments as part of the 2023–2024 EPCAPE campaign. Photo is by John Bilberry, Los Alamos National Laboratory. The Atmospheric Radiation Measurement (ARM) User Facility’s longtime recommended…
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New ARM Best Estimate Data Available for 4 ARM Sites
ARMBEATM relative humidity (top) and surface precipitation (bottom) are shown for April through June 2023 during the EPCAPE campaign in La Jolla, California. Images were generated by Yuying Zhang, Lawrence Livermore National Laboratory. The Atmospheric Radiation Measurement (ARM) User Facility provides tailored datastreams known as ARM Best Estimate (ARMBE) data products for use in the…
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Enhanced Eddy Correlation Flux Product Available
Time series of surface sensible heat fluxes (top), latent heat fluxes (middle), and carbon dioxide fluxes (bottom) are shown from the ECOR and QCECOR value-added product at the Eastern North Atlantic atmospheric observatory on April 18, 2024. The gray line is original ECOR data. The black line represents corrected QCECOR data, and red x’s indicate…
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New Aerosol Optical Depth Data Available for 4 ARM Sites
The colors represent aerosol optical depths measured at wavelengths of 415, 500, 615, 673, 870, and 1625 nanometers (nm) with the multifilter rotating shadowband radiometer on December 13, 2023, in La Jolla, California, during the EPCAPE campaign. Data plot is by Krista Gaustad, Pacific Northwest National Laboratory. The Aerosol Optical Depth (AOD) value-added product derived…