rLakeAnalyzer: ts.wedderburn.number – R documentation

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ts.wedderburn.number

Calculate Wedderburn number for a timeseries.

Description

Function for simplifying the calculation of Wedderburn Number. Can usually be called directly on data loaded directly using load.ts and load.bathy.

Usage

ts.wedderburn.number(wtr, wnd, wnd.height, bathy, Ao, seasonal = TRUE)

Arguments

`wtr`	A data frame of water temperatures (in Celsius). Loaded using `load.ts`
`wnd`	A data frame of wind speeds (in m/s). Loaded using `load.ts`
`wnd.height`	Height of the anemometer above the lake surface in meters
`bathy`	A data frame containing hypsometric data. Loaded using `load.bathy`
`Ao`	Numeric value for the water body surface area (m^2) at zero meters depth
`seasonal`	Boolean indicating if seasonal thermocline should be used in calculation.

Value

Returns a data frame with the timeseries of Wedderburn number. Includes a ‘datetime’ column.

References

Imberger, J., Patterson, J.C., 1990. Physical limnology. Advances in Applied Mechanics 27, 353-370.

Examples

#Get the path for the package example file included
	wtr.path <- system.file('extdata', 'Sparkling.daily.wtr', package="rLakeAnalyzer")
	wnd.path <- system.file('extdata', 'Sparkling.daily.wnd', package="rLakeAnalyzer")
	bathy.path <- system.file('extdata', 'Sparkling.bth', package="rLakeAnalyzer")
	
	#Load data for example lake, Sparkilng lake, in Wisconsin.
	sp.wtr = load.ts(wtr.path)
	sp.wnd = load.ts(wnd.path)
	sp.bathy = load.bathy(bathy.path)
	
	sp.area = 64e4  #Area of Sparkling lake in m^2
	wnd.height = 2  #Height of Sparkling lake anemometer
	
	w.n = ts.wedderburn.number(sp.wtr, sp.wnd, wnd.height, sp.bathy, sp.area)
	plot(w.n$datetime, w.n$wedderburn.number, type='l', ylab='Wedderburn Number', xlab='Date')

rLakeAnalyzer

Lake Physics Tools

v1.11.4.1

GPL (>= 2)

Authors

Luke Winslow, Jordan Read, Richard Woolway, Jennifer Brentrup, Taylor Leach, Jake Zwart, Sam Albers, Doug Collinge

Initial release