The Sea Breeze Circulation During the Land Sea Breeze Experiment (LASBEX) in Central California
The Sea Breeze Circulation During the Land Sea Breeze Experiment (LASBEX) in Central California

Author: Michael Fagan

Publisher:

Published: 1988

Total Pages: 139

ISBN-13:

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The sea breeze circulation was investigated using a combination of acoustic doppler sodar, doppler lidar and conventional observations in central California on the coast of Monterey Bay. The study was called LASBEX (Land Sea Breeze EXperiment). A monostatic three-axis phased-array doppler sodar was able to detect the various features of the sea breeze front, which has many of the characteristics of a gravity head current produced in laboratory experiments, such as the longitudinal vortex, lobe and cleft structure, and strong regions of turbulence and convergence. Profiles of the wind field and its component variances were generated every five minutes. Vertical velocities up to 1.0 m/s were detected in the updraft region at the front. Vertical velocity fields were used to derive the horizontal divergence associated with the sea breeze and values of convergence in the range of .004/s and greater were calculated. These are believed to be more accurate values than any found in previous sea breeze studies. Doppler lidar radial velocity information was useful in mapping the various layers and wind structure of the sea breeze. The wind field of the sea breeze by the lidar was compared with the sodar. The results of this comparison showed that the sodar was well suited to investigate features under 600 meters in height, such as the updraft region behind the front and the variance of the wind, whereas the lidar was better at describing the larger scale flow, such as the return flow of the sea breeze, the convergence zone along the sea breeze front and prevailing synoptic winds. Together, these instruments gave a comprehensive and complete description of the sea breeze frontal structure, evolution and movement. Theses.(jhd).

Sounding and Surface Meteorological Data from the Land/sea Breeze Experiment (LASBEX)
Sounding and Surface Meteorological Data from the Land/sea Breeze Experiment (LASBEX)

Author: William J. Shaw

Publisher:

Published: 1989

Total Pages: 312

ISBN-13:

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The Land/Sea Breeze Experiment (LASBEX) was a program designed to investigate the structure and evolution of the coastal marine atmospheric boundary layer with standard and state-of-the-art meteorological systems. Measurements were made in the vicinity of the mouth of the Salinas Valley in central California during the last two weeks of September, 1987. This report documents standard meteorological data from surface and sounding systems during the experiment. (SDW).

Sea Breeze and Local Winds
Sea Breeze and Local Winds

Author: John E. Simpson

Publisher: Cambridge University Press

Published: 1994-06-02

Total Pages: 260

ISBN-13: 9780521452113

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The sea breeze affects our lives in many ways. It controls our local weather, not only on the coast but also in many districts inland. Air pollution and smog, also the distribution of airborne insect pests and the spread of pollen are all controlled by the sea breeze. In the world of sport it is important to glider pilots, sailors and surfers, and balloonists. In the book we see how radar, lidar and satellite photography have helped to forecast and map sea breezes and the all-important 'sea-breeze front'. The book ends with a description of laboratory experiments mostly carried out by the author and his co-workers, and a simple summary of theoretical models. The book will be welcomed by those researching in the subject but will also be valuable to the general reader who is interested in local weather and the natural environment.

The Nature of The Propagation of Sea Breeze Fronts in Central California
The Nature of The Propagation of Sea Breeze Fronts in Central California

Author:

Publisher:

Published: 1990

Total Pages: 77

ISBN-13:

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An examination is made of the nature of propagation of sea breeze fronts in central California. From 15 to 30 September, 1987, the Land/Sea Breeze Experiment (LASBEX) provided a series of meteorological observations including sodar, lidar, rawinsonde, radiosonde and surface observations. Surface observations of opportunity were also available from local marine labs and airports. Using a very simple linear model, the speed and direction of the sea breeze front is investigated. The speed of frontal propagation varied from 1 m/s to 3 m/s. A correlation between the speed of frontal propagation and estimated surface heat flux is observed. The direction of frontal propagation tends to be up valley. Comparison of the frontal propagation vector with stations in the southern portion of Monterey Bay shows that the front is curved on the mesoscale.

California Sea Breeze Structure and Its Relation to the Synoptic Scale
California Sea Breeze Structure and Its Relation to the Synoptic Scale

Author: Michael D. Foster

Publisher:

Published: 1996-09-01

Total Pages: 199

ISBN-13: 9781423573784

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The sea breeze structure was examined at several locations along the California coast during the summers of 1993-1995. The sea breeze was objectively classified as three distinct types: gradual, frontal and rapid onset. The sea breeze wind and virtual temperature structure were determined at the surface and the planetary boundary layer. Especially important were the identification of distinct local and regional scale sea breeze circulations. To examine the role of the synoptic scale wind patterns on the development of sea breeze type/ structure, an objective classification scheme was developed and applied along the West Coast. The synoptic scale classification scheme identified the long- term position of the eastern North Pacific Ocean anticyclone and significant north/south deviations that determined large scale wind regimes. Using the classification scheme, the "continental" sea and land breezes, previously only seen in long term statistical analysis, emerged from NOGAPS model analysis fields. The role of the synoptic scale wind circulation patterns in determining the sea breeze types was explored. The roles of coastline geometry and inland heating sources was determined to be essential in the development and understanding of the sea breeze circulation types.