chamber.diurnal: Chamber: Designing Diurnal Profile

In rambur: Design and Analysis of Intertidal Chamber Experiments

Chamber: Designing Diurnal Profile

Description

A worker function to design the diurnal patterns of environmental variables.

Usage

chamber.diurnal(
  day = 0,
  time.step = 1,
  light.model = "gaussian",
  light.duration = 16,
  light.peak.time = 13,
  light.max = 100,
  temp.model = "sinusoidal",
  temp.air.mean = 17,
  temp.air.range = 8,
  temp.water.mean = 19,
  temp.water.range = 1,
  temp.peak.time = 15,
  tidal.day = 24,
  ie.cycle = c(0, 1, 0, 1),
  iec.start.time = 0,
  wc.time = NA
)

Arguments

day	an integer, the day of experiment.
time.step	a numeric, the resolution of the profile in hours.
light.model	a character string, pattern of light. Default to "gaussian", indicating gaussian function.
light.duration	a numeric, light duration (photoperiod) in hours, with brightness of at least 1%.
light.peak.time	a numeric, time of day when brightness peaks.
light.max	an integer, maximum brightness.
temp.model	a character string, pattern of temperature. Default to "sinusoidal", indicating sinusoidal function.
temp.air.mean	a numeric, the mean of air temperature during the day in °C.
temp.air.range	a numeric, the range of air temperature during the day in °C.
temp.water.mean	a numeric, the mean of water temperature during the day in °C.
temp.water.range	a numeric, the range of water temperature during the day in °C.
temp.peak.time	a numeric, time of day when temperature peaks.
tidal.day	a numeric, tidal day duration in hours. Default to 24, same as the solar day.
ie.cycle	a vector of 0 and 1, the immersion-emersion cycle (e.g., semi-diurnal).
iec.start.time	a numeric, time of day when immersion-emersion cycle starts.
wc.time	a numeric, time of day when automatic water change starts.

Value

a data frame with eight columns, including time as day and hour, and environmental variables as light, temp.air, temp.water, immersion, temp, wc.

See Also

chamber.design()

Examples

# default
day0 <- chamber.diurnal()
day0
plot(day0)

# custom
chamber.diurnal(day = -3, time.step = 0.5,
  light.duration = 17, light.peak.time = 12,
  temp.air.mean = 30, temp.air.range = 10,
  temp.water.mean = 20, temp.water.range = 2, temp.peak.time = 14,
  ie.cycle =  c(0, 1), iec.start.time = 2.5,
  wc.time = 16.5)

rambur documentation built on Oct. 17, 2026, 1:08 a.m.