An evaluation of the Naval Oceanic Vertical Aerosol Model during Key90
Cecere, Thomas H.
Davidson, Kenneth L.
Durkee, Philip A.
MetadataShow full item record
An experiment was conducted in the Florida Keys from 2 - 19 July 1990 to test the performance of the Naval Oceanic Vertical Aerosol Model (NOVAM) in a weak-convective regime Meteorological data collected by aircraft and boat was used to generate the surface and vertical profile information files required by NOVAM. Using this information, NOVAM predicts the aerosol extinction (km(-1)) for a vertical cross-section of the atmosphere. Aircraft observed aerosol extinction profiles were also obtained. Comparisons between observed and NOVAM aerosol extinction profiles revealed major deviations above the cloud top. From the surface to the top of the cloud layer, NOVAM generally did an excellent job in predicting profile shape, with the magnitude of aerosol extinction tied to the extinction matched at the surface. In a few cases, observed extinction increased more rapidly than NOVAM predicted extinction from the surface to the base of the cloud layer. This is attributed to rain scavenging associated with thunderstorm activity in the area. Comparison between difference aerosol extinction profiles revealed much spatial and temporal variation that was verified by Lidar profiles of atmospheric structure. Thunderstorm activity, multiple cloud-layers, and the spatial variation in the atmospheric structure have led to a hypothesis that deep-convection was responsible for the major differences between observed and predicted aerosol extinction profiles. If this is the case, a simple modification to the weak-convective model may be made to apply to a deep-convection model.
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
Showing items related by title, author, creator and subject.
Heil, James Norman (Monterey, California. Naval Postgraduate School, 1981-03);Observed vertical profiles of optical extinction due to aerosol scattering were examined relative to prevailing synoptic scale features. This examination was on the suitability of an existing wind speed and humidity ...
Evaluation of Daytime measurements of Aerosols and Water Vapor made by an Operational Raman Lidar over the Southern Great Plains Ferrare, Richard; Turner, David; Clayton, Marian; Schmid, Beat; Redemann, Jens; Covert, David; Elleman, Robert; Ogren, John; Andrews, Elisabeth; Goldsmith, John E.M.; Jonsson, Haflidi (2006);Raman lidar water vapor and aerosol extinction profiles acquired during the daytime over the Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) site in northern Oklahoma (36.606 ...
Vertical structure of aerosols, temperature, and moisture associated with an intense African dust event observed over the eastern Caribbean Jung, Eunsil; Albrecht, Bruce; Prospero, Joseph M.; Jonsson, Haflidi H.; Kreidenweis, Sonia M. (2013);An unusually intense African dust event affected a large area of the western Atlantic and eastern Caribbean in early April 2010. Measurements made east of Barbados from the Center for Interdisciplinary Remotely Piloted ...