Evaluation of remote sensing techniques for measuring cloud water and drizzle in marine stratocumulus clouds

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:467664

Feingold, G ^[1]; Frisch, A S ^[2]; Stevens, B; Cotton, W R ^[3]

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1. Univ. of Colorado, Boulder, CO (United States)
2. NOAA, Boulder, CO (United States). Environmental Technology Lab.
3. Colorado State Univ., Fort Collins, CO (United States)

NOAA`s Environmental Technology Laboratory has developed techniques for retrieving cloud liquid water content and drizzle characteristics using a K{sub {alpha}}-band Doppler radar and microwave radiometer. The instruments were deployed on the island of Porto Santo in the Maderias during the recent Atlantic Stratocumulus Transition Experiment (ASTEX), June 1992. Unfortunately, there were no useful overflights of the island and there are no direct in-situ measurements against which to compare the remote measurements. In this paper the authors will use a data set generated by a 3-D large eddy simulation model as a surrogate for real data. The model results should not be viewed in the context of this work as a case study but rather as a data set describing a typical marine stratocumulus capped boundary layer which is used to analyze the behavior of the remote sensing retrievals. The model is a version of the Regional Atmospheric Modeling System (RAMS) which has been modified to include explicit treatment of cloud condensation nucleus and droplet size spectra.

• Sponsoring Organization: USDOE, Washington, DC (United States); National Oceanic and Atmospheric Administration, Washington, DC (United States); National Inst. for Global Environmental Change, Davis, CA (United States)
• OSTI ID: 467664
• Report Number(s): CONF-9409461--
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
CLIMATIC CHANGE
CLOUDS
MATHEMATICAL MODELS
MONITORING
PERFORMANCE
REMOTE SENSING
THREE-DIMENSIONAL CALCULATIONS