ARM

Category: Data Announcements

  • 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…

  • Derived Wind Profile Data from Doppler Lidar Ready for Review

    Height-time display of wind speed (colors) and direction (arrows) from the Doppler lidar at the Southern Great Plains site for October 4, 2012. Vertically resolved wind measurements are crucial for numerical weather prediction and for modeling pollutant and aerosol transport. The scanning, coherent Doppler lidars operated by the ARM Facility have the capability of providing…

  • New ARM Best Estimate Land Product Contains Critical Soil Quantities for Describing Land Properties

    Soil moisture at the SGP Central Facility site for 1998, mean over five EBBR sensors, measured at 5 centimeters underground. The ARM Best Estimate: Land (ARMBELAND) value-added prduct (VAP) is a subset of the ARM Best Estimate (ARMBE) products designed to support community land-atmospheric research and land model developments. It contains several critical soil quantities…

  • Value-Added Product Estimates Planetary Boundary-Layer Height from Radiosondes

    Example quicklook plot from the VAP showing the sub-sampled potential temperature (black) and potential temperature lapse rate (red) from a single radiosonde along with the estimates of PBL height from the three methods. The planetary boundary-layer (PBL) height (or mixing-layer depth) can vary significantly with time due to a number of factors including large-scale dynamics,…

  • New Data Available for Precipitation Value-Added Product

    A spatial plot of rainfall intensity (mm/h) centered on the Manus (TWP-C1) central facility as retrieved from the C-band scanning ARM precipitation radar using a rainfall-reflectivity relationship.The Quantitative Precipitation Experiment (QPE) value-added product (VAP) contains precipitation rates gathered by the C-band scanning ARM precipitation radar (C-SAPR). Data are now available for September 2011, covering the…

  • Large-Scale Forcing Data for AMIE-Gan Available for Evaluation

    Large-scale forcing data from the SMART-R precipitation radar (top) and Omega (bottom).The large-scale forcing data for the ARM MJO Investigation Experiment (AMIE) on Gan Island in the Maldives are now available for use and evaluation by the cloud modeling community. AMIE-Gan was conducted during the period October 2011 to March 2012 in conjunction with the…

  • Evaluation Value-Added Product Estimates Organic Aerosol Components

    Less-oxidized organic aerosol concentration and quality check flags for February 2012. Click to enlarge.Organic aerosol (OA, i.e., the organic fraction of particles) accounts for 10–90% of the fine aerosol mass globally and is a key determinant of aerosol radiative forcing. But atmospheric OA is poorly characterized and its life cycle insufficiently represented in models. As…

  • Reprocessed Raman Lidar Data Now Available

    This comparison plot shows the improved detection of cirrus and anvil clouds using the Raman and micropluse lidar data.Raman Lidar data obtained at the Darwin site have been reprocessed with an improved cloud mask, attenuation flag, and extended height range to 20 kilometers. Data are now available at 2-minute and 10-minute resolution for the Raman…

  • Aerosol Data From Pico Observatory Now Part of Value-Added Product

    Day with moderate aerosol loading (22 June 2010): AOD at five wavelengths (top) and Angstrom exponent (bottom) at the Pico Observatory site.Aerosol optical depth (AOD) measurements have been provided for the Above-Cloud Radiation Budget field campaign at Pico Observatory, Azores, held in conjunction with the 2010 deployment of the ARM Mobile Facility (AMF) in Graciosa…

  • Large-Scale Forcing Data Set for SPARTICUS Available

    Precipitation (top) and Omega (bottom) in April 2010 at SGP based on large-scale forcing data for SPARTICUS. A new large-scale forcing data set is now available for the Variational Analysis (VARANAL) value-added product (VAP) using data from the Small Particles in Cirrus (SPARTICUS) field campaign. The constrained variational objective analysis approach described in Zhang and…