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Micropulse Lidar Cloud Mask Machine Learning VAP Released for 2 ARM Campaigns
The Micropulse Lidar Cloud Mask Machine Learning value-added product (MPLCMASKML VAP) is now available for two recent field campaigns conducted by the Atmospheric Radiation Measurement (ARM) user facility. Users can now access MPLCMASKML production data from the ARM Mobile Facility site that operated in La Porte, Texas, during the TRacking Aerosol Convection interactions ExpeRiment (TRACER).…
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Updated: New Cloud Radar Products Available From COMBLE Campaign
Editor’s note (July 20, 2023): A new KASACRGRIDRHI evaluation release for COMBLE, which uses b1-level calibrated HSRHI data as input, is now available. The output is a single c1-level netCDF file containing calibrated radar moments remapped onto a 2D Cartesian grid. Access the data from the ARM Data Center. To cite the c1-level data, please…
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Micropulse Lidar Cloud Mask Machine Learning VAP Now In Production
The Micropulse Lidar Cloud Mask Machine Learning value-added product (MPLCMASKML VAP) has moved from evaluation to production. This transition increases the data availability for active Atmospheric Radiation Measurement (ARM) user facility sites operating fast-switching polarized micropulse lidars from the beginning of instrument operations at each site to the present day. In addition, production data are…
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ARM Rolls Out New Products for Determining Boundary-Layer Height
The structure and depth of the planetary boundary layer (PBL) are important to a wide range of atmospheric processes. Such processes include cloud formation and aerosol and chemical mixing, transport, and transformation. Errors in the determination of PBL height can significantly affect the formation and maintenance of low-level clouds and the initiation of convective clouds…
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New Micropulse Lidar Cloud Mask Machine Learning VAP Released
Diverse cloud detection algorithms have been developed and applied to atmospheric lidar data to identify cloud boundaries and produce cloud masks. The general approach that most algorithms use reflects the complex physics of interactions between laser light and atmospheric particles to detect and distinguish clouds from other features (atmospheric and non-atmospheric) in the data. This…
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Three New Value-Added Products Available for MOSAiC Expedition
The Atmospheric Radiation Measurement (ARM) user facility released three new value-added products (VAPs) from the 2019–2020 Multidisciplinary Drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition. The three VAPs are Interpolated Sonde (INTERPSONDE), Ka-Band ARM Zenith Radar Active Remote Sensing of CLouds (KAZRARSCL), and Aerosol Optical Properties (AOP). INTERPSONDE transforms sounding data from weather…
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REVISED: Additional Ka-Band ARM Zenith Radar Product Releases Now Available
Editor’s note (September 1, 2021): Ka-Band ARM Zenith Radar Active Remote Sensing of CLouds (KAZRARSCL) data from January through June 2021 are now available for the Southern Great Plains and North Slope of Alaska atmospheric observatories. The data announcement below was originally published June 28, 2021. The Atmospheric Radiation Measurement (ARM) user facility has resumed…
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Micropulse Lidar Cloud Mask VAP Data Revised for High-Latitude Sites
Data reprocessed with a revised version of the Micropulse Lidar Cloud Mask value-added product (MPLCMASK VAP) are now available for four high-latitude sites. This reprocessing also includes periods of data previously listed as missing. The durations of missing data varied from several minutes to several hours and occurred periodically during the winter months. Affected fields…
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Ka-Band ARM Zenith Radar Product Resumes for 2 Sites
The Atmospheric Radiation Measurement (ARM) user facility has resumed production of the Ka-Band ARM Zenith Radar Active Remote Sensing of CLouds (KAZRARSCL) value-added product for the Eastern North Atlantic (ENA) atmospheric observatory and Oliktok Point, Alaska. From late December 2019 to May 2020, KAZRARSCL was not in production for the ENA and Oliktok Point sites…
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ARM Instrument Mentor Updates: Here’s to New Adventures
Two longtime colleagues plot their retirement journeys, a new mentor joins the fold, and another’s lead mentorship becomes official Say it ain’t so. Stephen R. Springston, an atmospheric scientist at Brookhaven National Laboratory (BNL) in New York, will retire March 31, 2021. A chemist by training, he refers to the move as a “phase change,”…