Wind Shielding Impacts on Water Quality in an Urban Reservoir

Xing, Zikun; Chua, Leok Poh; Miao, Haiyan; Imberger, Jörg; Yang, Peipei

doi:10.1007/s11269-018-1980-y

Cited by 12 publications

(13 citation statements)

References 18 publications

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“…The reduction in wind stress and the formation of an artificial microclimate in the air space between the panels and lake surface alters the energy transfer process between the atmosphere and lake (Oswald and Rouse 2004). Spatial heterogeneity of the wind field on the water surface can lead to modification of flow patterns and mixing (Xing et al 2018). The introduction of a microclimate results in an alteration of sensible and latent heat fluxes, both of which are important components of the energy budget for a lake.…”

Section: Introductionmentioning

confidence: 90%

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Impacts of a floating photovoltaic system on temperature and water quality in a shallow tropical reservoir

et al. 2022

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A three-dimensional hydrodynamic-ecological lake model combined with field measurements and sampling was applied to investigate the impacts of floating photovoltaic (PV) systems on hydrodynamics and water quality in a shallow tropical reservoir in Singapore. The model was validated using field data and subsequently applied to predict temperature and water quality changes for a hypothetical 42 ha placement of floating photovoltaic panels, covering about 30% of the water surface and capable of generating up to 50 MW of energy. The impact of the panel placement was studied numerically. The area of the reservoir where panels are placed experiences both light limiting and reduced wind stress conditions. The model indicated an average water temperature increase of 0.3 °C beneath the panels, consistent with the field observation from a 1 ha demonstration installation. Comparisons of model results between the uncovered and covered areas reveal greater stability of the water column (increase in Richardson number from 2.3 to 3.3) and reduction in mixing energy (from 9 × 10–7 to 7 × 10–7 W/kg) under the PV panels. Furthermore, the model predicted that chlorophyll a, total organic carbon and dissolved oxygen concentrations would decline by up to 30%, 15% and 50%, respectively, under the photovoltaic panels. Total nitrogen and total phosphorus, averaged over the water column, increased by 10% and 30%, respectively, under the panels. Distant from the floating solar panels, temperature, stability and water quality were unaffected.

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Section: Introductionmentioning

confidence: 90%

“…Recent applications of the model to other reservoirs in Singapore include studies by Xing et al (2018) and Yang et al (2019a). ELCOM solves the unsteady, hydrostatic, Boussinesq, Reynolds-averaged Navier-Stokes (RANS) equations using a mixed-layer model to simulate the mixing process in the vertical water column (Laval et al 2003).…”

Section: Numerical Modellingmentioning

confidence: 99%

Impacts of a floating photovoltaic system on temperature and water quality in a shallow tropical reservoir

et al. 2022

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“…This dramatic increase in turbidity might be related to the fresh breeze given that many previous studies showed that strong force of wind could induce resuspension of water constituents (e.g. sediment, algae, and bottom materials) and lead to an increase in turbidity (Cho 2007;Penning et al 2012;Xing et al 2018). But this reserves further studies and verifications because windinduced resuspension highly depended on wind speed, wind direction, local water depth, and local terrain (Vanhellemont and Ruddick 2014).…”

Section: Overall Variations Of Wuhan Lakes' Turbiditymentioning

confidence: 92%

“…ship waving, sewage draining, and engineering construction) and meteorological conditions (e.g. rainfall and wind) may be the dominant driving factors (Miyazaki 2005;Bachmann, Hoyer, and Canfield 2000;Xing et al 2018).…”

Section: Potential Factors For the Variations Of Turbiditymentioning

confidence: 99%

Integrated monitoring of lakes’ turbidity in Wuhan, China during the COVID-19 epidemic using multi-sensor satellite observations

Sun

Liu

Wang

et al. 2020

International Journal of Digital Earth

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“…Dissolved oxygen, chlorophyll a, total phosphorus, total nitrogen, and ammonia nitrogen (NH 4 ) were modeled with uniform wind applied at the lake surface. Xing et al (2018) applied the Estuary Lake and Coastal Ocean Model (ELCOM) coupled with the Computational Aquatic Ecosystem Dynamics Model (CAEDYM) for a tropical reservoir in Singapore. The effects of variable versus uniform wind field on water quality were investigated, and it was found that application of a variable wind field provided more accurate modeling results, particularly for the areas of the reservoir affected by wind shielding from the surrounding buildings.…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Modeling of the Wind Field over an Urban Lake Subject to Wind Sheltering

Ashrafi,

Chua,

Irvine

et al. 2022

Journal of Applied Meteorology and Climatology

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The wind field over an urban lake may exhibit considerable variability due to wind shielding effects from surrounding structures. Field measurements at an urban reservoir in Singapore were augmented by computational fluid dynamics (CFD) model results to develop a wind model over the reservoir surface via a data assimilation approach. The field measurements identified, depending on structure alignment with the prevailing wind direction, wind shielding that impacted wind direction and velocity over the reservoir surface. The wind model integrated the temporal response of the measurements and spatial distribution produced by the CFD modelling. The wind model was used to predict the spatio-temporal pattern of the wind field over the reservoir surface for a full year. The modeling results showed good agreement with measured wind data at three measurement locations on the reservoir surface. The wind model has been incorporated with a hydrodynamics and water quality model to provide the spatio-temporal wind forcing over the reservoir surface.

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Wind Shielding Impacts on Water Quality in an Urban Reservoir

Cited by 12 publications

References 18 publications

Impacts of a floating photovoltaic system on temperature and water quality in a shallow tropical reservoir

Impacts of a floating photovoltaic system on temperature and water quality in a shallow tropical reservoir

Integrated monitoring of lakes’ turbidity in Wuhan, China during the COVID-19 epidemic using multi-sensor satellite observations

Spatiotemporal Modeling of the Wind Field over an Urban Lake Subject to Wind Sheltering

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