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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,…
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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…
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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…
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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…
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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…
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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…
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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…
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Vertical Air Motion Profiles Available Through New Value-Added Product
In the top figure, evidence of stratiform precipitation is observed in the WACR reflectivity profiles. Vertical air motion is retrieved from the WACR velocity spectra for hours 900 to 1200 as depicted on the lower left. An overview of the VAP algorithm is displayed on the lower right. Click to enlarge.The Vertical Air Motion during…
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Evaluation Value-Added Product Estimates Droplet Number Concentration
Adiabaticity parameter and quality check flags for August 15, 2010, at the Southern Great Plains.Cloud droplet number concentration is an important factor in understanding aerosol-cloud interactions. As aerosol concentration increases, it is expected that droplet number concentration, Nd, will increase and droplet size decrease for a given liquid water path, which will greatly affect cloud…
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Announcing: ARM’s New Data Discovery Browser
Now showing on a computer near you is a completely new and dynamic tool for accessing and ordering ARM data!