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Sea breeze

About: Sea breeze is a research topic. Over the lifetime, 2544 publications have been published within this topic receiving 55651 citations.


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Journal ArticleDOI
TL;DR: In this paper, the authors investigated the processes responsible for ventilation of the atmospheric boundary layer during a nonfrontal day that occurred on 9 May 2005 using the UK Met Office Unified Model.
Abstract: It is often assumed that ventilation of the atmospheric boundary layer is weak in the absence of fronts, but is this always true? In this paper we investigate the processes responsible for ventilation of the atmospheric boundary layer during a nonfrontal day that occurred on 9 May 2005 using the UK Met Office Unified Model. Pollution sources are represented by the constant emission of a passive tracer everywhere over land. The ventilation processes observed include shallow convection, turbulent mixing followed by large-scale ascent, a sea breeze circulation and coastal outflow. Vertical distributions of tracer are validated qualitatively with AMPEP (Aircraft Measurement of chemical Processing Export fluxes of Pollutants over the UK) CO aircraft measurements and are shown to agree impressively well. Budget calculations of tracers are performed in order to determine the relative importance of these ventilation processes. Coastal outflow and the sea breeze circulation were found to ventilate 26% of the boundary layer tracer by sunset of which 2% was above 2 km. A combination of coastal outflow, the sea breeze circulation, turbulent mixing and large-scale ascent ventilated 46% of the boundary layer tracer, of which 10% was above 2 km. Finally, coastal outflow, the sea breeze circulation, turbulent mixing, large-scale ascent and shallow convection together ventilated 52% of the tracer into the free troposphere, of which 26% was above 2 km. Hence this study shows that significant ventilation of the boundary layer can occur in the absence of fronts (and thus during high-pressure events). Turbulent mixing and convection processes can double the amount of pollution ventilated from the boundary layer.

31 citations

Journal ArticleDOI
TL;DR: In this article, a full wind turbine performance test has been performed on a 3MW onshore wind turbine in a coastal location in Norway utilizing a Windcube v2 lidar, and results show how turbulence, shear and veer influence the power production and the power curve derived from hub height and equivalent wind speed respectively.

31 citations

Journal ArticleDOI
TL;DR: In this article, an empirical Parametric Power Curve Function (EPPCF) model is proposed to calibrate a power curve function for a realistic estimate of wind power from weather and climate model data at the regional or national scale.

31 citations

Journal ArticleDOI
TL;DR: In this paper, a complete year of hourly 3 km resolution high-frequency radar measured surface currents covering the Gulf of the Farallones were analyzed with the following three primary objectives: (1) describe the seasonal surface circulation, (2) identify tidal currents, and (3) determine the influence of wind forcing.
Abstract: [1] A complete year of hourly 3 km resolution high-frequency radar measured surface currents covering the Gulf of the Farallones were analyzed with the following three primary objectives: (1) describe the seasonal surface circulation, (2) identify tidal currents, and (3) determine the influence of wind forcing. Three predominant seasonal circulation regimes were identified: relaxation, storm, and upwelling. The relaxation period exhibited mean poleward flow over the slope, variable equatorward flow over the shelf, and cyclonic and anticyclonic eddies south of Pt. Reyes. The storm period mean flow was variable and exhibited evidence of coastally trapped buoyancy flow from the mouth of the San Francisco Bay. The upwelling period exhibited equatorward flow throughout the gulf with regions of intensified flow at the northern and southern regions over the slope. The tidal variance ranged from 4 to 60%, was highest around the mouth of the Bay, decreased past the shelf, and its spatial pattern reflected the combined influence of the K1 and M2 tidal current amplitudes. K1 ellipses typically rotated clockwise throughout the gulf and decreased in amplitude past the shelf. M2 ellipses were comparably more variable in orientation and magnitude. Harmonic “tidal” analyses of buoy wind data over 4 month time periods showed significant K1 amplitudes which did not appear when the analysis was done for the entire year. This indicates that harmonic tidal analyses on surface currents are probably more effective at disassociating diurnal sea breeze driven currents when performed over long periods of time such as a year.

31 citations

Journal ArticleDOI
TL;DR: In this article, the role of moving sea breeze fronts on air quality in coastal and inland polluted areas was investigated by the numerical simulation of the transport/chemistry of air pollutants, using detailed structures of eddy diffusivity, temperature and flow fields associated with the moving Sea breeze fronts.

31 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202382
2022190
2021101
202087
201978
201877