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Toolkit for ARM Radar Data Previewed at Workshop
This data plot shows the height and north/south displacement of rain relative to the ARM Southern Great Plains site’s Central Facility in Oklahoma. This retrieval used information from all three X-band Scanning ARM Precipitation Radars at the SGP site and was performed using tools in the Python-ARM radar toolkit. Click on image to enlarge. In…
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New Flagship Data Product Launched
The new flagship product ARM Best Estimate (ARMBE) has launched with the release of ARM Best Estimate Cloud Radiation (ARMBECLDRAD) and ARM Best Estimate Atmospheric Measurements (ARMBEATM) data sets, formerly under the Climate Modeling Best Estimate VAP. ARMBE will represent all of the ARM best estimate value-added products (VAP).
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Surface Cloud Condensation Nuclei Average Evaluation Product Available
This plot shows the concentration of CCN measured by the cloud condensation particle counter versus the concentration measured by the condensation particle counter.Aerosol observing systems (AOS) at ARM’s sites measure cloud condensation nuclei (CCN) at several supersaturations using a single-column CCN counter. The Average of Cloud Condensation Nuclei from AOS (AOSCCNAVG) value-added product (VAP) was…
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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…
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Convective Vertical Velocity Data Ready for Evaluation
A cross-section of the atmosphere over the Billings, Oklahoma, radar wind profiler (RWP) at 22:12 UTC on May 23, 2011. The x-axis shows the location of the RWP (-14.5 km) in relation to the SGP Central Facility (0 km). The y-axis shows height above the surface. The bar on the right-hand side shows reflectivity. Contours…
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New Evaluation Product Provides Improved Eddy Correlation Data
This figure describes the process used to generate the QCECOR VAP. Click to enlarge.Eddy correlation flux measurement systems (ECOR) are used by ARM to provide surface turbulence flux measurements. The Quality Controlled Eddy Correlation Flux (QCECOR) value-added product (VAP) improves the ECOR data by applying the following quality control (QC) procedures: Eddy correlation corrections Determination…
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ARM Developers Seek to Improve Data Flow
After a full day discussing all things data related, participants at the ARM Developers Meeting relaxed on the shores of the Columbia River with a low-key game of cricket. Once a year, representatives from ARM’s External Data Center, Data Quality Office, Data Archive, and Data Management Facility gather with infrastructure management, scientists, and developers of…
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New Radar Data Lead to New Value-Added Product
This sample KAZR-ARSCL plot shows data from the SGP on April 26, 2011. The top image shows the ‘reflectivity_best_estimate’ field, and the lower image shows cloud base and cloud top heights for all cloud layers detected on this day.The Ka-band ARM zenith radars (KAZRs) have replaced the long-serving millimeter-wavelength cloud radars (MMCRs). As a result,…
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New Product Organizes Data for Use by Modelers
Knowledge of a wide range of meteorological, chemical, and aerosol quantities and properties is needed to fully understand the key processes that affect aerosol life cycle. Field campaign and operational measurements of aerosol properties and trace gas chemistry are often available in a wide range of formats. As a result, scientists usually spend a large…
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New Evaluation Product Estimates Planetary Boundary Layer Height
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. Click to enlarge. Planetary boundary layer (PBL) height (or mixing-layer depth) can vary significantly with time due to a number of factors,…