Droplet Number Concentration Value-Added Product

Technical Report · Mon Mar 15 04:00:00 EDT 2021

DOI:https://doi.org/10.2172/1237963· OSTI ID:1237963

Riihimaki, L. ^[1]; McFarlane, S. ^[2]; Sivaraman, C. ^[1]

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1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
2. DOE ARM Climate Research Facility, Washington, DC (United States)

The ndrop_mfrsr value-added product (VAP) provides an estimate of the cloud droplet number concentration of overcast water clouds retrieved from cloud optical depth from the multi-filter rotating shadowband radiometer (MFRSR) instrument and liquid water path (LWP) retrieved from the microwave radiometer (MWR). When cloud layer information is available from vertically pointing lidar and radars in the Active Remote Sensing of Clouds (ARSCL) product, the VAP also provides estimates of the adiabatic LWP and an adiabatic parameter (beta) that indicates how divergent the LWP is from the adiabatic case. quality control (QC) flags (qc_drop_number_conc), an uncertainty estimate (drop_number_conc_toterr), and a cloud layer type flag (cloud_base_type) are useful indicators of the quality and accuracy of any given value of the retrieval. Examples of these major input and output variables are given in sample plots in section 6.0.

• Research Organization: DOE ARM Climate Research Facility, Washington, DC (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
• OSTI ID: 1237963
• Report Number(s): DOE/SC-ARM--TR-140
• Country of Publication: United States
• Language: English

Related Subjects

97 MATHEMATICS AND COMPUTING