ARM

Category: Data Announcements

  • 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…

  • Long-Term, Large-Scale Ensemble Forcing Data Set for Darwin Available

    A new data set is now available for the ARM Tropical Western Pacific site in Darwin for long-term, large-scale forcing data. Produced by Dr. Christian Jakob’s group at Monash University in Melbourne, Australia, these data were constrained with C-POL radar retrieved rainfall through the variational analysis method (Zhang and Lin 1997) by using the European…

  • 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…

  • New Datastream Identifies Nauru Data Influenced by Clouds

    A new data set that identifies periods when Nauru data may be affected by island-influenced clouds has been produced by Chuck Long, site scientist for the ARM Tropical Western Pacific site. The Nauru island effect (NIE) data set currently covers the period from September 2005 to May 2010 and will be updated periodically as new…

  • Tandem Differential Mobility Analyzer (TDMA) Data Available at the ARM Data Archive

    Dry samples are collected by the aerosol stack and transferred inside the Aerosol Observation System structure to the TDMA where they are exposed to humidity for growth rate sampling. For more details on how the TDMA works, see this [http://collinsgroup.tamu.edu/images/TDMAschematic.jpg][schematic]. ARM file photo.Over four years of data from the Tandem Differential Mobility Analyzer (TDMA), including…

  • New Addition to the Climate Modeling Best Estimate Data Set

    A new addition to the Climate Modeling Best Estimate (CBME) data set has been released, comprising a statistical summary of the CMBE data. It includes both monthly mean and monthly mean diurnal cycle and their climatologies for all the geophysical quantities contained in the CMBE data sets. The CMBE data set is specifically tailored for…

  • 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…