ARM

Tag: ACSM

  • Users Ask for New Arctic Aerosol Measurements, and ARM Listens

    ARM installs set of aerosol instruments at neighboring NOAA facility in Utqiaġvik, Alaska ARM aerosol instruments are now installed at a NOAA facility at Utqiaġvik, Alaska, near ARM’s North Slope of Alaska atmospheric observatory. The instruments are an aerosol chemical speciation monitor (taking up most of this rack), an aerodynamic particle sizer (on a shelf…

  • 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…

  • New Best-Estimate Cloud Condensation Nuclei Data Product Available

    A new principal investigator data set for ARM’s Southern Great Plains atmospheric observatory incorporates measurements from several instruments within the Aerosol Observing System (AOS). The AOS is ARM’s primary platform for collecting aerosol measurements at Earth’s surface. A new principal investigator data set contains about five years of best-estimate cloud condensation nuclei (CCN) spectra from…

  • Aerosol Chemical Speciation Monitor VAP Moves to Production

    This sample plot from ARM’s TRacking Aerosol Convection interactions ExpeRiment (TRACER) shows a selection of aerosol mass or volume concentrations and the corresponding mass or volume concentrations corrected for composition-dependent collection efficiency (CDCE). Production data are now available from a value-added product (VAP) that corrects aerosol chemical speciation monitor (ACSM) data for non-unity particle detection.…

  • 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 Stephen Springston, right, a Brookhaven National Laboratory chemist and soon-to-be-retiree, poses with longtime lab colleague Tom Watson, a chemist who retired earlier this year. Both have been instrument mentors for ARM. In the fall of 2020,…

  • Corrected Aerosol Chemical Speciation Monitor Data Available for Evaluation

    This sample plot from ARM’s Southern Great Plains (SGP) atmospheric observatory shows a selection of aerosol mass or volume concentrations and the corresponding mass or volume concentrations corrected for composition-dependent collection efficiency (CDCE). A new value-added product (VAP) from the Atmospheric Radiation Measurement (ARM) user facility corrects aerosol chemical speciation monitor (ACSM) data for non-unity…

  • Evaluation Value-Added Product Estimates Organic Aerosol Components

    Less-oxidized organic aerosol concentration and quality check flags for February 2012. Click to enlarge.Organic aerosol (OA, i.e., the organic fraction of particles) accounts for 10–90% of the fine aerosol mass globally and is a key determinant of aerosol radiative forcing. But atmospheric OA is poorly characterized and its life cycle insufficiently represented in models. As…