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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…
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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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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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Rain Rates Provided by Radar in New Evaluation Product
a) Validation of rainfall totals against the Oklahoma Mesonet and b) a single time step showing the ability of the algorithm to capture rain rates from the convective line and trailing stratiform. Precipitation rates from cloud systems can give a fundamental insight into in-cloud processes. While rain gauges and disdrometers can give information at a…
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New VAP Yields Aerosol Optical Depth from Irradiance Measurements
This plot shows spectral AOD versus time of day from the SASHE at the AMF1 Cape Cod site. The plot shows a cloudy morning (gray symbols) followed by cloud-free conditions (colored symbols in a “rainbow” pattern) with aerosol burden evolving over the course of the day. The Shortwave Array Spectroradiometer-Hemispheric (SASHE) is a ground-based instrument…
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Rejected! Update to Langley VAP Dismisses Outliers
An example of a clear day where most values made it through the cloud screening algorithm.A Langley plot is a regression of log (signal) versus airmass. Under appropriate conditions, the Langley regression yields values that represent the response of an instrument in absence of atmosphere (i.e., at the top of atmosphere), and these values are…
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New Value-Added Product Provides Tropospheric Temperature Measurements
Sample output from the RLPROFTEMP VAP showing four selected months. Results are shown for (a) January 2009, (b) April 2009, (c) July 2009, and (d) October 2009.Temperature is one of the most fundamental atmospheric state variables and is crucial to the understanding of many meteorological processes. The Raman lidars at the ARM Climate Research Facility…
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Additional Data Added to Aerosol Optical Depth Product
AOD at five wavelengths (top) and Angstrom exponent (bottom) at the Gan Island site on November 5, 2011.Aerosol optical depth (AOD) measures total aerosol burden in the atmosphere. The spectral dependence of AOD, typically described by the Angstrom exponent, is also an indicator of particle size. Small Angstrom exponent values (near zero) indicate presence of…
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New Evaluation Product Estimates Aerosol Properties
Time series of the retrieved aerosol optical depth (aod), single-scattering albedo (ssa), and asymmetry factor (asym) at 415 nm (green color) and 500 nm (red color) wavelengths for May 9, 2011. Solid black line represents a parameter describing the temporal variability of aod: parameter = 1 (variability is large) and parameter = 0 (variability is…