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Studies of stratocumulus cloud, drizzle and aerosol interaction

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dc.contributor.authorChen, Aidong, author
dc.date.accessioned2022-03-18T17:08:17Z
dc.date.available2022-03-18T17:08:17Z
dc.date.issued1996-04
dc.descriptionApril 1996.
dc.descriptionAlso issued as author's thesis (M.S.) -- Colorado State University, 1996.
dc.description.abstractA stratocumulus-capped marine mixed layer model has been developed. It focuses on a new parameterization of drizzle which is regulated by a predicted CCN number con- centration. When the CCN number concentration increases, the drizzle rate decreases, so that the boundary-layer cloud remains thick. When the CCN number concentration decreases, the drizzle rate increases and as a result, the boundary-layer cloud becomes thinner. The boundary layer's macroscopic structure is thus sensitive to the CCN number concentration. Aerosol particles in this model are divided into two modes. One represents the small nucleation mode particles, and the other represents the CCN mode particles. Both number and mass balances are considered in this report. Two steady states are obtained, similar to the results of Baker and Charlson (1990). The lower steady state CCN number concentration corresponds to the typical marine time boundary layer. The higher steady state CCN number concentration is regarded as the continental air mass case. A difference between the results from this model and those reported by Baker and Charlson (1990) is that a smoother transition between these two states is found. This result supports some observations that suggest there is no sharp transition between the drizzling and non-drizzling steady states of CCN number concentration in the marine boundary layer. The model is tested using ASTEX observational data. The model results are in good agreement with the observations.
dc.description.sponsorshipSponsored by the National Science Foundation under grant number ATM-9215951; the National Aeronautics and Space Administration under grant number NAG1-1137; and the Office of Naval Research under contract number N00014-91-J-1422, P0006.
dc.format.mediumreports
dc.identifier.urihttps://hdl.handle.net/10217/234552
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relationCatalog record number (MMS ID): 991000112249703361
dc.relationQC852 .C6 no. 603
dc.relation.ispartofAtmospheric Science Papers (Blue Books)
dc.relation.ispartofAtmospheric science paper, no. 603
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.subjectCloud physics
dc.subjectBoundary layer (Meteorology)
dc.subjectAerosols
dc.titleStudies of stratocumulus cloud, drizzle and aerosol interaction
dc.typeText
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