shallowcumulus
shallowcumulus.c1 datastream is generated by shallowcumulus VAP
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Shallow Cumulus (SHALLOWCUMULUS) Value-Added Product Report
Periods of shallow cumulus clouds are identified automatically at the U.S. Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) observatory in order to help determine times of interest for Large-Eddy Simulation (LES) and Observation (LASSO) modeling efforts. This value-added data product (VAP) uses input from the Cloud Type (CLDTYPE) VAP (with cloud types determined from Active Remotely Sensed Cloud Locations [ARSCL] VAP cloud boundaries), the ceilometer, and the total sky imager (TSI). The data set uses an hourly temporal resolution and only classifies events as shallow cumulus when low clouds are detected for at least 1.5 hours and meet specified criteria for cloud occurrence and cloud fraction. In addition to time periods that contain just shallow cumulus, cases with overlying cirrus and a number of transitional cases (transitions to/from cirrus, stratus, and altocumulus/altostratus) are also identified.
54 ENVIRONMENTAL SCIENCES↗
shcusummary
shcusummary.c1 contains monthly summary files generated by shallowcumulus VAP
54 ENVIRONMENTAL SCIENCES↗