ARM

Tag: MFRSR

  • 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…

  • 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…

  • Surface Spectral Albedo Product Updated

    This example quicklook from the SURFSPECALB value-added product shows the estimated spectral albedo for each of the seven multifilter radiometer channels for the 10-meter tower at ARM’s Southern Great Plains atmospheric observatory on May 1, 2023. In fiscal year 2021, the Atmospheric Radiation Measurement (ARM) user facility added a seventh channel to its multifilter rotating shadowband…

  • Evaluate Aerosol Optical Depth Best Estimate Data Product

    These time series of combined aerosol optical depths (AODs) from the AODBE 5-channel product exhibit seasonal patterns with large and small AOD values during summer and winter, respectively, at ARM’s Southern Great Plains atmospheric observatory. The time series have gaps, which are likely associated with data quality issues and required upgrades and replacements of ground-based…

  • ARM Finishes Radiometer Upgrades; Related Data Product Updates Underway

    Measurements from the multifilter rotating shadowband radiometer (MFRSR), seen here at ARM’s Eastern North Atlantic atmospheric observatory, allow users to infer the atmosphere’s aerosol optical depth at each wavelength. ARM is updating data products to accommodate the addition of a new channel to its MFRSRs. In fiscal year 2021, the Atmospheric Radiation Measurement (ARM) user…

  • Aerosol Optical Depth Product Generates New Data

    The colors represent aerosol optical depths measured at five different wavelengths with the multifilter rotating shadowband radiometer on June 19, 2019, at Oliktok Point, Alaska. New data are now available from the Aerosol Optical Depth value-added product derived from multifilter rotating shadowband radiometer measurements (AOD-MFRSR VAP). AOD is the measure of the total aerosol burden…

  • Aerosol Optical Depth Data Updated for Azores, Macquarie Island

    Measurements from the multifilter rotating shadowband radiometer, seen here at ARM’s Eastern North Atlantic atmospheric observatory, allow users to infer the atmosphere’s aerosol optical depth at each wavelength. Aerosol optical depth (AOD) is the measure of the total aerosol burden in a vertical column of the atmosphere. The AOD value-added product (VAP) has been running…

  • Cloud Droplet Number Concentration Product Updated

    This sample plot from the Southern Great Plains Central Facility shows the droplet number concentration for October 30, 2019. New data are available from the Droplet Number Concentration value-added product (NDROP VAP), which has been updated to use additional inputs. This will allow NDROP to be available quicker with better retrievals and to be applied…

  • Updated Surface Spectral Albedo Data Released

    This example quicklook from the SURFSPECALB value-added product shows the estimated spectral albedo for the 10- and 25-meter towers at ARM’s Southern Great Plains atmospheric observatory on June 2, 2016. On that date, the surface type for both towers was all vegetation. Updated data from the Surface Spectral Albedo value-added product (SURFSPECALB VAP) are available…

  • New Journal Article Highlights ARM Aerosol Data Set

    Value-added product leverages long-term Southern Great Plains data The Quality Control Aerosol Optical Depth (QCAOD) value-added product combines individual aerosol optical depth records provided by the Cimel sunphotometer (left), multifilter rotating shadowband radiometers (middle), and normal incidence multifilter radiometer (right). A March 2021 article in the journal Scientific Data presents two decades of aerosol data…