ARM

Tag: SGP

  • New Release of Reprocessed QCECOR Data

    A new protocol for the QCECOR VAP at Lawrence Livermore National Laboratory has been developed. Quality-Controlled Eddy Correlation Flux Measurement (QCECOR) value-added product data were reprocessed for all the stations at the Southern Great Plains (SGP) site from year 2003 to the end of year 2015. The QCECOR data provide surface sensible and latent heat flux…

  • New Radiative Flux Analysis VAP Now Operational

    Radiative flux analysis data of irradiance and cloud fraction are shown here for the Southern Great Plains. The Radiative Flux Analysis VAP is an implementation of a series of algorithms that estimate clear-sky broadband surface irradiances, cloud fraction, optical depth, cloud transmissivity, and cloud radiative effects. This VAP is an updated version of the Shortwave…

  • New Scanning ARM Cloud Radar – Advanced – Velocity Azimuth Display (SACR-ADV-VAD) Product Released to Evaluation

    Horizontal wind speed and direction at cloud level is shown, from SACR-ADV-VAD, for the first seven days of August 2012 at the Southern Great Plains megasite. The Scanning ARM Cloud Radar-Advanced-Velocity Azimuth Display (SACR-ADV-VAD) value-added product (VAP) provides profiles of horizontal wind estimates at cloud level, using observations from the Hemispherical Sky Range Height Indicator…

  • All About the Pyrheliometers: 12th Annual IPC Conference

    Editor’s Note: Craig Webb, calibration technician at the Southern Great Plains site, sent this update. Data quality of the measurements from radiometers requires accurate and regular recalibration traceable to the World Radiometric Reference, the international standard of solar radiation measurement. Every 5 years the World Radiation Center/Physikalisch-Meteorologisches Observatorium Davos in Davos, Switzerland, hosts the International…

  • Areal Average Albedo VAP Evaluation Data Now Available

    Shown here are (top) screened areal daily average albedo and (bottom) quality check results on field.A new value-added product (VAP) estimating the surface albedo at Multifilter Rotating Shadowband Radiometer (MFRSR) spectral wavelengths is now available from the Southern Great Plains (SGP). The Areal Average Albedo (AREALAVEALB) VAP data set is unique in that it gives…

  • New MICROBASE Ensemble Data Set Available

    Height-time plots for 30-minute ensemble means and standard deviations of liquid effective radius from the MICROBASEEN data set. A new data set of ensemble cloud retrievals from the March 2000 intensive observational period at the Southern Great Plains Central Facility is now available in the ARM Data Archive evaluation area. The new data set uses…

  • Droplet Number Concentration Value-Added Product Now Operational

    As aerosol concentration increases, droplet number concentration will increase and droplet size will decrease. Cloud droplet number concentration is an important factor in understanding aerosol-cloud interactions. As aerosol concentration increases, it is expected that droplet number concentration will increase and droplet size will decrease for a given liquid water path. This will greatly affect cloud…

  • High-Vertical Resolution Soundings Available for SGP and NSA

    The ARM External Data Center (XDC) now provides atmospheric soundings—vertical measurements of the atmospheric column—in 1-second resolutions collected by the National Weather Service (NWS) in netCDF format to the ARM Data Archive. Quality control is added by the University Corporation for Atmospheric Research. These weather balloon soundings record temperature, pressure, altitude, humidity, and winds for…

  • MICROARSCL Evaluation Data Released: Harnessing the Power of Radar Doppler Spectra

    Four of the roughly 30 variables provided by MICROARSCL are shown here for a day in Barrow, Alaska. Since 2004, the ARM Climate Research Facility has collected continuous recordings of profiling radar Doppler spectra. These recorded spectra offer a powerful means for overcoming the dependency of radar measurements on particle size (proportional to the sixth…

  • Ensemble Large-Scale Forcing Data for the MC3E Campaign Available

    This image shows different precipitation rates from the ensemble data set. Ensemble forcing data from the Midlatitude Continental Convective Clouds Experiment (MC3E) were developed by considering uncertainties in precipitation observations using the analysis described in Zhang and Lin [1997] and Zhang et al. [2001]. MC3E was a major ARM field campaign conducted from April to…