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MOSAiC Doppler Lidar Motion Correction VAPs Now in Production
The location of ARM’s Doppler lidar on the R/V Polarstern during the MOSAiC expedition is indicated in this ARM file photo. Two value-added products (VAPs) specifically designed for the 2019–2020 Multidisciplinary Drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition recently moved from evaluation to production. The Doppler Lidar Motion Correction (DLMC) VAP applies…
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ARM Provides World’s First Multi-Site Long-Term Data Record of Ice-Nucleating Particles
Editor’s note: Jessie Creamean, a research scientist at Colorado State University and an ARM mentor for ice-nucleating particle collection and analysis, sent in the following update. Here I am setting up a salad bowl ice-nucleating particle (INP) sampler in Tasmania for the CAPE-k campaign. (Literally, we use a salad bowl to protect our filters from rain…
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New Aerosol Optical Depth Data Available for TRACER Campaign
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 May 12, 2022, in La Porte, Texas, during the TRACER campaign. The time of day is in Coordinated Universal Time (UTC). Data plot is by Evgueni Kassianov, Pacific Northwest…
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Large-Scale Forcing Data Released for SAIL Campaign
Continuous large-scale forcing data are now available for the Surface Atmosphere Integrated Field Laboratory (SAIL) field campaign. The Atmospheric Radiation Measurement (ARM) user facility conducted the SAIL campaign in high-altitude complex terrain near Crested Butte, Colorado, from September 2021 to mid-June 2023. Scientists can use this value-added product (VAP), known as VARANAL, to drive single-column…
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Improved Broadband Radiation Data Available From ARM Fixed Sites
ARM radiometers operate near Lamont, Oklahoma, on April 18, 2023. 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…
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Aerosol Optical Depth Best Estimate Production Data Available for 2 ARM Sites
These time series of the combined aerosol optical depths (AODs) from 2016 to 2020 at ARM’s Eastern North Atlantic atmospheric observatory do not show seasonal patterns. Gaps in the time series are associated with data quality issues or instrument repair or replacement. Image is courtesy of Gabriel Gibler, Pacific Northwest National Laboratory. Aerosol Optical Depth…
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3-Dimensional Cloud Positions Produced for TRACER Campaign
This figure presents Point Cloud of Cloud Points (PCCP) value-added data from July 25, 2022, during the TRACER field campaign. The upper panel displays the distribution of the reconstructed cloud points by time and height, and the colors represent the count of the detected points in the corresponding bin. The bottom panel is a picture…
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Tethered Balloon System Merged Data Now In Production
During the SAIL campaign, a tethered balloon system collects data at the East River Pumphouse site south of Gothic, Colorado, on June 14, 2023. Photo is by Nathan Bilow. The Tethered Balloon System Merged value-added product (TBSMERGED VAP) and the in-cloud version of the merged product (TBSMERGEDINCLOUD) have moved from evaluation to production. Both VAPs…
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Southern Great Plains Observatory Collects New Set of Solar Eclipse Data
ARM now has measurements from 2017 and 2024 eclipses In a span of less than seven years, the contiguous United States has gotten to witness two total solar eclipses. The Atmospheric Radiation Measurement (ARM) user facility has collected data from both. The first of those eclipses took place August 21, 2017, with 89% coverage over…
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Cloud Type Classification Product Released for MOSAiC, TRACER, and SAIL Campaigns
Time-height displays show reflectivity (top) and cloud types (bottom) on June 26, 2022, during the SAIL campaign. Plots are created by the Cloud Type Classification (CLDTYPE) value-added product quicklook code. The Cloud Type Classification value-added product (CLDTYPE VAP) is now available for the following three field campaigns: the 2019–2020 Multidisciplinary Drifting Observatory for the Study…