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Raman Lidar Vertical Profiles Product Expands to Oliktok Point, Alaska
Plots from top to bottom show particulate backscatter coefficient profile; particulate extinction coefficient profile; particulate depolarization ratio profile; and detected features at the ARM site in Oliktok Point, Alaska, on July 18, 2018. In the bottom plot, HOI refers to horizontally oriented ice crystals. Data at Oliktok Point, Alaska, are now available from the Raman…
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New Aerosol Chemical Speciation Monitor Data Product Now Available
This sample plot from ARM’s TRacking Aerosol Convection interactions ExpeRiment (TRACER) near Houston, Texas, shows a selection of aerosol mass concentrations corrected for composition-dependent collection efficiency. A new data product from the Atmospheric Radiation Measurement (ARM) user facility corrects time-of-flight aerosol chemical speciation monitor (ToF-ACSM) data for non-unity particle detection. The ToF-ACSM provides a quantitative…
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Micropulse Lidar Cloud Mask Machine Learning VAP Now In Production
This sample quicklook plot from the Southern Great Plains atmospheric observatory shows the log of the normalized relative backscatter (log10 NRB), linear depolarization ratio (LDR), and cloud mask from the MPLCMASKML value-added product for January 1, 2015. In addition, the plot contains the machine learning model’s confidence in its prediction, and cloud base and cloud…
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ARM Rolls Out New Products for Determining Boundary-Layer Height
Plots from top to bottom show micropulse lidar (MPL) backscatter; ceilometer (CEIL) backscatter; Doppler lidar (DL) vertical air motion variance; and estimates of planetary boundary-layer height (PBLHT) derived from MPL, CEIL, DL, and sonde measurements at ARM’s Southern Great Plains Central Facility on June 28, 2017. The structure and depth of the planetary boundary layer…
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Updated Surface Cloud Grid Data Now Available
Plots of primary measurements from the Surface Cloud Grid (SFCCLDGRID) value-added product are generated for each sample time (15-minute sampling interval) and linked together to create movies of the change in the measurements over the day at ARM’s Southern Great Plains atmospheric observatory. In the figure above, the yellow ball represents the sun in the…
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New Radiative Flux Analysis Data Produced for Southern Great Plains
This plot shows irradiance and albedo—surface reflectivity—from the Radiative Flux Analysis (RADFLUXANAL) value-added product at the Southern Great Plains Central Facility’s broadband radiometer station from June 15 to 16, 2021. The Atmospheric Radiation Measurement (ARM) user facility processes yearly data from the Radiative Flux Analysis value-added product (RADFLUXANAL VAP) to produce level 2 (c2) data.…
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Aerosol Optical Properties Data Released for TRACER, SAIL Campaigns
Above are examples of properties available in the Aerosol Optical Properties value-added product files. Both plots illustrate one week of data from the TRacking Aerosol Convection interactions ExpeRiment (TRACER) in the Houston, Texas, area. The Aerosol Optical Properties value-added product (AOP VAP) is now available for two recent mobile deployments conducted by the Atmospheric Radiation…
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Cloud Type Classification Product Released for Eastern North Atlantic
Time-height displays show reflectivity (top) and cloud types (bottom) on August 15, 2016, at ARM’s Eastern North Atlantic atmospheric observatory. The Cloud Type Classification value-added product (CLDTYPE VAP) is now available for the Atmospheric Radiation Measurement (ARM) user facility’s Eastern North Atlantic (ENA) atmospheric observatory. CLDTYPE provides an automated cloud type classification based on macrophysical…
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New Precipitation Radar Data Products Released for 2 ARM Observatories
Plots from the North Slope of Alaska data set show, clockwise from top left, hydrometeor classification (gate ID), reflectivity, cross-correlation coefficient, and velocity texture (mean Doppler velocity) generated from version 2 of the CMAC value-added product for November 23, 2019. The top left plot shows IDs of ground clutter, snow, and multitrip. Gate ID—the classification…
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Cloud Condensation Nuclei Vertical Profile Data Product Updated
This sample plot from ARM’s Southern Great Plains atmospheric observatory shows the retrieved number concentration of cloud condensation nuclei at 0.4% supersaturation for September 22, 2016. A new version of the Retrieved Number concentration of Cloud Condensation Nuclei value-added product (RNCCN VAP) is now available for evaluation. This VAP provides the vertical distribution of cloud…