scispace - formally typeset
Search or ask a question
Topic

Sea breeze

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


Papers
More filters
Journal ArticleDOI
TL;DR: The technique used here to measure porewater fluxes as a function of hydrodynamic forcing is an excellent alternative to benthic chamber experiments, which isolate the sediments from the overlying hydrodynamics.
Abstract: The Swan River Estuary is a shallow meso-eutrophic system in SW Australia. The dominant summer wind pattern in the region includes a strong SW sea breeze each afternoon. We hypothesised that such a regular and significant wind event may be important in causing the release of sediment porewater with subsequent effects on water quality and nutrient dynamics. To test this, we conducted a multidisciplinary field experiment in 1996 during which we measured temperature microstructure profiles (to yield turbulence parameters), velocity profiles, light profiles and nutrient profiles. Bottom shear stresses were estimated via the viscous-dissipation method, which can be used in stratified and unstratified water bodies or during convective cooling, all of which are likely to affect sediment-water dynamics in shallow systems. We observed that, after the sea breeze began, there was a dramatic breakdown of temperature stratification, an increase in mean velocities and an increase in turbulence levels at the sediment-water interface. This coincided with a doubling of water column ammonium concentrations. However, this pulse of nutrients was shown to occur prior to conditions necessary for sediment resuspension. We therefore attribute the increased porewater fluxes to interactions between increasingly energetic hydrodynamics and the benthic environment. The technique used here to measure porewater fluxes as a function of hydrodynamic forcing is an excellent alternative to benthic chamber experiments, which isolate the sediments from the overlying hydrodynamics.

38 citations

Journal ArticleDOI
TL;DR: In this article, the authors demonstrated how temperature, humidity, and wind profile data from the lower troposphere obtained with a lightweight UAV can be used to improve high-resolution numerical weather simulations by four-dimensional data assimilation (FDDA).
Abstract: In this study, it is demonstrated how temperature, humidity, and wind profile data from the lower troposphere obtained with a lightweight unmanned aerial system (UAS) can be used to improve high-resolution numerical weather simulations by four-dimensional data assimilation (FDDA). The combined UAS and FDDA system is applied to two case studies of northeasterly flow situations in southwest Iceland from the international Moso field campaign on 19 and 20 July 2009. Both situations were characterized by high diurnal boundary layer temperature variation leading to thermally driven flow, predominantly in the form of sea-breeze circulation along the coast. The data assimilation leads to an improvement in the simulation of the horizontal and vertical extension of the sea breeze as well as of the local background flow. Erroneously simulated fog over the Reykjanes peninsula on 19 July, which leads to a local temperature underestimation of 8 K, is also corrected by the data assimilation. Sensitivity experime...

38 citations

Journal ArticleDOI
TL;DR: In this article, the authors evaluated the impact of urbanization on summertime precipitation in Osaka, Japan using the Weather Research and Forecasting (WRF) model version 3.5.
Abstract: This study utilized the Weather Research and Forecasting (WRF) model version 3.5.1 to evaluate the impact of urbanization on summertime precipitation in Osaka, Japan. The evaluation was conducted by comparing the WRF simulations with the present land use and no-urban land use (replacing “Urban” with “Paddy”) for August from 2006 to 2010. The urbanization increased mean air temperature by 2.1°C in urban areas because of increased sensible heat flux and decreased mean humidity by 0.8 g kg−1 because of decreased latent heat flux. In addition, the urbanization increased duration of the southwesterly sea breeze. The urbanization increased precipitation in urban areas and decreased in the surrounding areas. The mean precipitation in urban areas was increased by 20 mm month−1 (27% of the total amount without the synoptic-scale precipitation). The precipitation increase was generally due to the enhancement of the formation and development of convective clouds by the increase in sensible heat flux during afternoon and evening time periods. The urbanization in Osaka changes spatial and temporal distribution patterns of precipitation and evaporation, and consequently it substantially affects the water cycle in and around the urban areas of Osaka.

38 citations

Journal ArticleDOI
TL;DR: In this paper, conditions for urban breeze detection have been examined and two different methods have been proposed for the estimate of the urban breeze intensity, about 1m−s −1, was of the same order of magnitude as measured wind data.
Abstract: In Guadeloupe (French West Indies), the main municipal solid waste is surrounded by highly urbanized areas. An urban heat island (UHI) behavior has been identified in the landfill environment. It has been measured and its intensity (up to more than 4 °C) has been shown to be negatively correlated with nebulosity and Tradewinds strength. Conditions for urban breeze detection have been examined. The breeze westerly direction brought some cool air over the urban area. The urban breeze generated by this UHI should also be responsible for a nocturnal pollution from the VOCs emitted by the landfill. Two different methods have been proposed for the breeze intensity estimation. The calculated breeze intensity values, about 1 m s −1 , was of the same order of magnitude as measured wind data. Temperature measurements performed during 2 weeks have shown no occurrence of temperature gradients between sea and land air masses, able to generate other breeze processes in the studied area.

38 citations

Journal ArticleDOI
TL;DR: In this article, a fully coupled regional downscaling system based on the Regional Spectral Model (RSM) for atmosphere and the Regional Ocean Modeling System (ROMS) for the ocean was developed for the purpose of down-scaling observed analysis or global model outputs.
Abstract: [1] A fully coupled regional downscaling system based on the Regional Spectral Model (RSM) for atmosphere and the Regional Ocean Modeling System (ROMS) for the ocean was developed for the purpose of downscaling observed analysis or global model outputs. The two models share the same grid and resolution with efficient parallelization through the use of dual message passing interfaces. Coupled downscaling was performed using historical Simple Ocean Data Assimilation (SODA) oceanic reanalysis and NCEP/DOE (R-2) atmospheric reanalysis in order to study the impact of coupling on the regional scale atmospheric analysis. The results were subsequently compared with the uncoupled downscaling forced by the prescribed observed sea surface temperature (SST). The coupled experiment yielded the SST and ocean current with realistic small-scale oceanic features that are almost absent in the oceanic reanalysis. Upwelling over the California coast is well resolved and comparable to findings obtained from high-resolution observations. The coupling impact on the atmospheric circulation mainly modulates the near surface atmospheric variables when compared to the simulation conducted without coupling. The duration of the Catalina Eddy detected in the coupled experiment increased by about 6.5% when compared to that in the uncoupled experiment. The offshore land breeze is enhanced by about 10%, whereas the change in the onshore sea breeze is very small during the summer.

38 citations


Network Information
Related Topics (5)
Precipitation
32.8K papers, 990.4K citations
85% related
Climate model
22.2K papers, 1.1M citations
85% related
Wind speed
48.3K papers, 830.4K citations
83% related
Sea surface temperature
21.2K papers, 874.7K citations
82% related
Atmosphere
30.8K papers, 737.8K citations
80% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202382
2022190
2021101
202087
201978
201877