ARM

Tag: SGP

  • Microwave Radiometer Retrieval Product Processed for SGP Central Facility

    This Microwave Radiometer Retrievals (MWRRET) quicklook image provides information from the Southern Great Plains Central Facility on August 10, 2019. The image shows, from top to bottom, observed brightness temperatures at 23.8 GHz (blue) and 31.4 GHz (red); retrieved precipitable water vapor from the physical method (blue) and statistical method (green); and retrieved liquid water…

  • ARM Evaluation Product Delivers 4-Dimensional Map of Cloudiness

    This sample plot from the COGS value-added product shows a heat map of cloud depth at 21:29:40 UTC (Coordinated Universal Time) on August 4, 2019, at ARM’s Southern Great Plains atmospheric observatory. A new value-added product (VAP) called Clouds Optically Gridded by Stereo (COGS) provides a four-dimensional (4D) map of cloudiness. This map is generated…

  • Aerosol Hygroscopicity Kappa Data Product Available for Evaluation

    Sample plots from ARM’s Southern Great Plains atmospheric observatory show kappa values within critical diameter-supersaturation field space, top, and a time series of kappa, bottom. A new value-added product (VAP) from the Atmospheric Radiation Measurement (ARM) user facility calculates the hygroscopic properties of measured aerosol particles. Hygroscopicity is the ability of a particle to take…

  • Updated ARM Best Estimate Data Available for Southern Great Plains

    The plots show ARMBEATM relative humidity, top, and surface precipitation, bottom, from May 31 to August 28, 2018, at ARM’s Southern Great Plains (SGP) atmospheric observatory. 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 earth system models. Two…

  • 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…

  • 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…

  • Updated Southern Great Plains Continuous Large-Scale Forcing Data Released

    The plots show the time series of the derived large-scale vertical velocity (Omega) in a previous VARANAL version 2 release for July 2018 (top) and in a new release with a bug fixed (middle), and the difference between the two releases (bottom). The bug only affects the time periods after 18 UTC July 21, when…

  • Updated: Southern Great Plains Radiation Data Quality VAP Data Reprocessed

    Updated February 5, 2021: Reprocessed QCRAD shortwave broadband total downwelling irradiance data are now available for the Southern Great Plains sites E33 (Newkirk, Oklahoma) from August 18, 2011, to July 29, 2016, and E38 (Omega, Oklahoma) from August 23, 2011, to July 19, 2016. Best-estimate c2/s2 data and infrared-corrected c2 data are reprocessed for both…

  • Value-Added Product Delivers 3D Cloud Positions Based on Stereo Photographs

    The figure presents PCCP VAP data from the Southern Great Plains E45 site (Tonkawa, Oklahoma) on March 24, 2020. The upper panel displays the distribution of the reconstructed cloud points by time and height. The colors represent the count of the detected points in the corresponding bin. The bottom left panel is a picture from…

  • New Quality Control Aerosol Optical Depth VAP Released

    These time series show the combined aerosol optical depth (AOD, green) and its four individual components (red, blue, wine, and cyan) during a three-hour period on May 11, 2008, at ARM’s Southern Great Plains atmospheric observatory. This example defines a “favorable” case in which all four individual AODs are assessable and the spread between them…