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New Cloud Microphysics and Sonde Products Available for 2 ARM Campaigns
INTERPSONDE potential temperature output profiles are shown for November 18, 2012, during the Two-Column Aerosol Project (TCAP). The Atmospheric Radiation Measurement (ARM) user facility released two new cloud microphysics and sonde value-added products (VAPs) from the 2012–2013 Two-Column Aerosol Project (TCAP) on Cape Cod, Massachusetts, and the Green Ocean Amazon (GoAmazon2014/15) field campaign near Manaus,…
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New ARM Data Epoch Assembled From COMBLE Campaign
In this satellite image of the Norwegian Sea on March 28, 2020, a cold-air outbreak spurs the formation of “cloud streets.” As these broken cloud decks stream southward, they evolve into cellular patterns. In red are the two instrument locations in Norway during ARM’s Cold-Air Outbreaks in the Marine Boundary Layer Experiment (COMBLE). This event…
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Your Introductory Guide to TRACER Data
Editor’s note: Michael Jensen, principal investigator for the 2021–2022 TRacking Aerosol Convection interactions ExpeRiment (TRACER), provided the following blog post. Most of the data from the TRacking Aerosol Convection interactions ExpeRiment (TRACER) came from this site in La Porte, Texas. After TRACER’s field operations period ended about eight months ago in the Houston, Texas, area,…
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New Data Product Determines Thermodynamic Phase of Cloud Hydrometeors
Thermodynamic cloud phase identification is important to understand many cloud processes such as ice particle production, precipitation formation, and cloud life-cycle evolution, and it is essential to improve our understanding of cloud radiative properties and the atmospheric radiative budget. Because ice particles and liquid droplets have distinct sizes, shapes, fall velocities, and refractive indexes, clouds…
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ARM Best Estimate Data Produced for TRACER Campaign
ARMBEATM relative humidity (top) and surface precipitation (bottom) are shown for the first 120 days of 2022 during the TRacking Aerosol Convection interactions Experiment (TRACER). 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 climate models. Two ARMBE data…
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Radiative Flux Analysis Data Released for TRACER Campaign
This plot shows irradiance and albedo—surface reflectivity—from the RADFLUXANAL value-added product at the main site of the TRacking Aerosol Convection interactions ExpeRiment (TRACER) from June 20 to 21, 2022. The Radiative Flux Analysis value-added product (RADFLUXANAL VAP) is now available for the 2021–2022 TRacking Aerosol Convection interactions ExpeRiment (TRACER) near Houston, Texas. RADFLUXANAL calculates clear-sky irradiance…
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Cloud Type Classification Product Expands to North Slope of Alaska
Time-height displays show reflectivity (top), cloud types (middle), and precipitation rate (bottom) on September 24, 2021, at ARM’s North Slope of Alaska atmospheric observatory. The Cloud Type Classification value-added product (CLDTYPE VAP) is now available for the Atmospheric Radiation Measurement (ARM) user facility’s North Slope of Alaska (NSA) atmospheric observatory. CLDTYPE provides an automated cloud…
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Radiosonde Parameters Calculation VAP Available
This skew-T plot shows the pressure and temperature recorded by an ARM radiosonde launched during the TRacking Aerosol Convection interactions ExpeRiment (TRACER) on June 1, 2022, in La Porte, Texas. Red, blue, and green dots indicate different radiosonde parameters. A new value-added product (VAP) for calculating radiosonde parameters within convective cloud environments is now available…
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ARM Best Estimate Cloud Radiation Data Released for MOSAiC
ARMBECLDRAD cloud fraction (top) on July 20, 2020, during the Multidisciplinary Drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition is derived from the Ka-Band ARM Zenith Radar Active Remote Sensing of Clouds (KAZRARSCL) product (bottom). The Atmospheric Radiation Measurement (ARM) user facility provides tailored datastreams known as ARM Best Estimate (ARMBE) data products…
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New Broadband Irradiance Data Produced for 2 ARM Sites
This collection of radiometers at Oliktok Point, Alaska, provided continuous measurements of broadband shortwave (solar) and longwave (infrared) irradiances for downwelling components. ARM stopped collecting data at Oliktok Point in June 2021 after almost eight years. New c2-level data are available from the Data Quality Assessment for ARM Radiation Data (QCRAD) product at Oliktok Point,…