ARM

Tag: SGP

  • ARM Cloud Retrieval Ensemble Data Set Available for Evaluation

    Multiple long-term cloud retrievals are now available for five ARM sites in the ACRED data set. A new ARM evaluation product, the ARM Cloud Retrieval Ensemble Data Set (ACRED), is now available for testing by the science community. ACRED was developed with the motivation to provide a rough estimate of the uncertainties in current retrieved…

  • New Surface Spectral Albedo VAP Provides Surface Type Observations at Southern Great Plains

    Example quicklook from the SURFSPECALB VAP. The plot shows the estimated spectral albedo at SGP for the 10-m and 25-m towers on September 11, 2004. On this day, the surface type for both towers is partial vegetation. The Surface Spectral Albedo (SURFSPECALB) value-added product (VAP) has been released for operational production at the Southern Great…

  • Lidar Value-Added Product Provides Cloud Measurements

    Sample plot generated by MPLCMASK. Click to enlarge. Lidar cloud boundaries are a useful tool for identifying cloud base height and cloud thickness in optically thin clouds. The Micropulse Lidar Cloud Mask (MPLCMASK) value-added product (VAP) provides cloud base height, cloud top height, and backscatter coefficient for non-polarized micropulse lidar measurements. In addition, depolarization ratio…

  • Microwave Radiometer Retrieval Data Available for ARM Sites

    An example plot from the MWRRET VAP for 10/8/1999 at SGP. (top) Brightness temperatures measured by the MWR; orange and blue lines indicate potential measurement spikes due to precipitation, (middle) retrieved precipitable water vapor from the new physical method (blue) and the original statistical method (green), (bottom) retrieved liquid water path from the new physical…

  • Radiatively Important Parameters Best Estimate Data Available for Southern Great Plains

    The upper panel shows the output aerosol extinction field in RIPBE, and the bottom panel shows the quality control (qc) flags on aerosol extinction. Descriptions of the qc flags are given in the netCDF file header. In this case, the gold and pink qc flags on the aerosol extinction indicate periods at the top of…

  • More Climate Modeling Best Estimate Data Available for More Sites

    Soundings and surface meteorological measurements are now available for five ARM sites in the CMBE data set.The latest release of the Climate Modeling Best Estimate (CMBE) data set has added soundings and surface meteorological measurements in the CMBE-ATM datastream for Barrow, Alaska, and all three Tropical Western Pacific sites. For these four sites, the cloud…

  • Updated Evaluation Product Available for Calculating Surface Spectral Albedo

    An updated version of the Surface Spectral Albedo (SurfSpecAlb1Mlawer) value-added product (VAP) has been released as an Evaluation Product for the Southern Great Plains (SGP) site. The original version of the algorithm created a near-continuous best estimate of broadband and narrowband downwelling irradiance, upwelling irradiances, and surface albedo using the multi-filter radiometers (MFRs) on the…

  • New Release of Cloud Modeling Best Estimate Data Set

    Detailed observations of clouds and radiation, along with the associated large-scale conditions such as temperature and relative humidity profiles, surface precipitation, and sensible and latent heat fluxes, provide invaluable information to understand the structure and temporal variability of observed cloud systems. All these variables are now conveniently packaged into the latest release of the Climate…

  • Best Estimate Data Available for Sensible and Latent Heat Fluxes at the SGP

    Data from the Bulk Aerodynamic Energy Balance Bowen Ratio (EBBR) Station, or BAEBBR, Value-Added Product (VAP) are now available at the ARCF Data Archive for the period 1993 through 2008 at the 15 Southern Great Plains (SGP) extended facilities with EBBR measurements. The BAEBBR VAP produces a “best estimate” of sensible and latent heat fluxes…

  • Upgrades to Cloud Radar Lead to New Data Product: MicroARSCL

    By providing detailed information about cloud properties, the millimeter wave cloud radar (MMCR) is a key capability at ARM sites. Between 2004 and 2006, ARM completed upgrades to the digital portion of the MMCR receivers. These upgrades significantly improved the radar’s temporal resolution, extended the interval for detecting velocity, and allowed continuous recording of Doppler…