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Recording Now Available: LASSO-ENA Virtual Planning Workshop
Editor’s note: The LASSO-ENA virtual planning workshop recording is available for viewing now. The Large-Eddy Simulation (LES) ARM Symbiotic Simulation and Observation (LASSO) activity is now beginning development of its third scenario, which will focus on marine boundary-layer clouds at the Atmospheric Radiation Measurement (ARM) user facility’s Eastern North Atlantic (ENA) atmospheric observatory. For those…
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LASSO-CACTI Beta Release Available
Editor’s note: William Gustafson, principal investigator for the Large-Eddy Simulation (LES) ARM Symbiotic Simulation and Observation (LASSO) activity, sent in this update. This is a rendering of the simulated radar reflectivity over the ARM Mobile Facility site during CACTI as viewed from the southwest at 19 UTC (Coordinated Universal Time) on January 29, 2019. The…
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New Cases and High-Frequency Observations Released for LASSO
The Large-Eddy Simulation (LES) ARM Symbiotic Simulation and Observation (LASSO) data set has grown yet again. Seventeen new cases are now available from the 2019 shallow convection season at the Atmospheric Radiation Measurement (ARM) user facility’s Southern Great Plains (SGP) atmospheric observatory. The current LASSO data set focuses on shallow convection with LES output provided…
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LASSO Gives New Capability to Researchers
For those wanting to run their own simulations, LASSO input observational data are now available The Large-Eddy Simulation (LES) ARM Symbiotic Simulation and Observation (LASSO) team recently released a new set of data bundles focused on shallow convection at ARM’s Southern Great Plains atmospheric observatory. The shallow convection scenario will go on hiatus while the…
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LASSO Snares BAMS Cover
The June 2020 Bulletin of the American Meteorological Society (BAMS) cover features the Large-Eddy Simulation (LES) ARM Symbiotic Simulation and Observation (LASSO) activity at ARM’s Southern Great Plains atmospheric observatory. Illustration is by Rose Perry, Pacific Northwest National Laboratory. Those familiar with the Atmospheric Radiation Measurement (ARM) user facility might recognize what is on the June…
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New Lifting Condensation Level Height VAP Available
The plot shows lifting condensation levels (LCLs) on March 6, 2019, for seven ARM Southern Great Plains (SGP) facilities and six Oklahoma Mesonet stations, all within 60 kilometers of the SGP Central Facility (sgpC1). The map identifies each location according to the color in the legend and time series. Plotted LCL heights of the individual…
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LASSO Shallow Convection Scenario Documented in BAMS
Through the Large-Eddy Simulation (LES) ARM Symbiotic Simulation and Observation (LASSO) activity, measurements and models work together at ARM’s Southern Great Plains atmospheric observatory. To help bridge the gap between observations and large-scale models, the Atmospheric Radiation Measurement (ARM) user facility began the Large-Eddy Simulation (LES) ARM Symbiotic Simulation and Observation (LASSO) activity in 2015.…
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Decision Made on LASSO’s Next Case
Deep convective clouds populate the night sky over Córdoba Province in Argentina. Such clouds will be the focus of a new case in the Large-Eddy Simulation (LES) ARM Symbiotic Simulation and Observation (LASSO) activity. Photo is by Jason Tomlinson, Pacific Northwest National Laboratory. A new type of case will soon join shallow convection in the…
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REVISED: New Shallow Cumulus VAP Available
These plots provide data about shallow cumulus events at ARM’s SGP Central Facility in June 2017. The top panel shows days with shallow cumulus events. The bottom panel gives more information for up to four events, including whether the event contained overlying cirrus, was not detected because no low clouds were found, missed the length…
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Continuous Large-Scale Forcing Data for Cloud Modeling From Southern Great Plains Extended to October 2018
The seasonal cycle of Southern Great Plains domain-averaged latent heat (LH) and sensible heat (SH) fluxes is shown by using QCECOR-only (QCECOR), BAEBBR-only (BAEBBR), and both QCECOR and BAEBBR data (merged) averaged from 2004 to 2015, and the impact to the derived large-scale vertical velocity (omega). Version 2 of the continuous forcing value-added product uses…