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Updated Microwave Radiometer Retrieval Product Available for MOSAiC
The Microwave Radiometer Retrievals (MWRRET) value-added product retrieves column precipitable water vapor and liquid water path from ARM’s 2-channel microwave radiometers. New files from the Microwave Radiometer Retrievals value-added product (MWRRET VAP) are now available for the Multidisciplinary Drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition. This release is more complete than the…
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ARM Instruments Detect Pressure Wave From Tongan Volcano Eruption
The plot shows the atmospheric pressure perturbation from the Tongan volcano eruption as recorded at five ARM sites (from top to bottom): the Eastern North Atlantic atmospheric observatory; the ARM Mobile Facility site in La Porte, Texas (TRACER field campaign); the Southern Great Plains site near Byron, Oklahoma; the ARM Mobile Facility site in Gothic,…
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Updated ARM Best Estimate Data Available for Eastern North Atlantic
Figure 1 shows ARMBEATM relative humidity (top) and surface precipitation (bottom) from ARM’s Eastern North Atlantic (ENA) atmospheric observatory from January through April 2020. The Atmospheric Radiation Measurement (ARM) user facility provides tailored datastreams known as ARM Best Estimate (ARMBE) data products for use in the evaluation of global earth system models. Two ARMBE data…
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New Broadband Irradiance Data Released for ARM Observatories
This collection of radiometers provides continuous measurements of broadband shortwave (solar) and longwave (infrared) irradiances for downwelling components. The Atmospheric Radiation Measurement (ARM) user facility processes yearly data from the Data Quality Assessment for ARM Radiation Data (QCRAD) and Radiative Flux Analysis (RADFLUXANAL) products to produce level 2 (c2) data. New c2-level data from QCRAD…
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Evaluate New Cloud Condensation Nuclei Vertical Profile Data Product
This sample plot from a day at ARM’s Southern Great Plains atmospheric observatory shows the retrieved number concentration of cloud condensation nuclei at 0.4% supersaturation. A new value-added product (VAP) provides the vertical distribution of cloud condensation nuclei (CCN) number concentrations for better representation of aerosol indirect effects in climate models. The Retrieved Number concentration…
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New Cloud Radar and Sonde Products Available for BAECC Campaign
INTERPSONDE potential temperature output profiles are shown for May 23, 2014, during the Biogenic Aerosols – Effects on Clouds and Climate (BAECC) field campaign. The Atmospheric Radiation Measurement (ARM) user facility released two new cloud radar and sonde value-added products (VAPs) from the Biogenic Aerosols – Effects on Clouds and Climate (BAECC) field campaign. BAECC…
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ARM Best Estimate Data Now Available for CACTI, COMBLE Campaigns
The Atmospheric Radiation Measurement (ARM) user facility provides tailored datastreams known as ARM Best Estimate (ARMBE) data products for use in the evaluation of global earth system models. ARMBE data sets are now available for the Cloud, Aerosol, and Complex Terrain Interactions (CACTI) field campaign and the Cold-Air Outbreaks in the Marine Boundary Layer Experiment…
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New Precipitation Value-Added Product Released for Video Disdrometers
Histograms of quantities associated with convective (red) and stratiform (blue) drop size distributions (DSDs) in terms of normalized DSD intercept parameter Nw (a), liquid water content LWC versus rainfall rate R (b), and median drop size D0 versus S-band Reflectivity Factor Z (c). Density is shown on the color scale. Information is adapted from Wang et al.…
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New Micropulse Lidar Cloud Mask Machine Learning VAP Released
This sample MPLCMASKML plot from the Southern Great Plains atmospheric observatory shows the log of the normalized relative backscatter (log10 NRB), linear depolarization ratio (LDR), and cloud masks from the MPLCMASKML and MPLCMASK value-added products for December 24, 2017. The strength of the machine learning approach is apparent on this day when moderate aerosol loading…
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3-Dimensional Cloud Positions Produced for CACTI Campaign
The figure shows sample Point Cloud of Cloud Points (PCCP) data for January 29, 2019, during the CACTI field campaign. The upper panel shows the distribution of the retrieved cloud points by time and height. A snapshot from the reference camera (32.1185oS, 64.7237oW) and the cloud point positions with respect to the base location appear…