Modeling study of the cloud-topped marine boundary layer
| dc.contributor.author | Guinn, Thomas A., author | |
| dc.date.accessioned | 2022-02-24T18:45:35Z | |
| dc.date.available | 2022-02-24T18:45:35Z | |
| dc.date.issued | 1989-11 | |
| dc.description | November 1989. | |
| dc.description | Also issued as author's thesis (M.S.) -- Colorado State University, 1989. | |
| dc.description.abstract | A coupled convective-radiative, boundary-layer model of marine stratocumulus clouds is presented. The model, which slightly generalizes Lilly's (1968) cloud topped mixed-layer model, has as dependent variables the cloud-top height, the cloud-base height, mixed-layer equivalent potential temperature and total water mixing ratio, the turbulent fluxes of equivalent potential temperature, total water mixing ratio, and virtual potential temperature, the cloud-top jumps of equivalent potential temperature and total water mixing ratio, the cloud-top temperature, and the net radiative flux divergence at cloud top and in the mixed layer. The model has been programmed for both the steady-state and time dependent cases using two different closure assumptions. Closure method one is a weighted average of Lilly's (1968) maximum and minimum entrainment assumptions. Closure method two assumes the ratio of the integral buoyant energy dissipation to the buoyant energy production to be constant. Experiments wee performed to determine which closure method produced the best results, and to simulate the observed diurnal thinning of the marine stratocumulus clouds. Results indicate that closure method two provides a more realistic representation of the observed marine boundary layer than does closure method one for both the steady-state case and the time dependent case. Results from the diurnal cycle simulations indicate that it is possible to simulate the observed thinning trend of the stratocumulus cloud layer although the magnitude of the thinning is less than observed. Results also indicate that thin clouds are more susceptible to thinning than are thick clouds. | |
| dc.description.sponsorship | Sponsored by the Marine Meteorology Program of the Office of Naval Research under contract N00014-87-K-0228. | |
| dc.format.medium | reports | |
| dc.identifier.uri | https://hdl.handle.net/10217/234397 | |
| dc.language | English | |
| dc.language.iso | eng | |
| dc.publisher | Colorado State University. Libraries | |
| dc.relation | Catalog record number (MMS ID): 991023652749703361 | |
| dc.relation | QC852 .C6 no. 458 | |
| dc.relation.ispartof | Atmospheric Science Papers (Blue Books) | |
| dc.relation.ispartof | Atmospheric science paper, no. 458 | |
| dc.rights | Copyright 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.subject.lcsh | Clouds | |
| dc.subject.lcsh | Boundary layer (Meteorology) | |
| dc.subject.lcsh | Convection (Meteorology) | |
| dc.title | Modeling study of the cloud-topped marine boundary layer | |
| dc.type | Text | |
| dcterms.rights.dpla | This Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). |
Files
Original bundle
1 - 1 of 1