Reconstructs a 24-hour hourly temperature profile from daily minimum, maximum, and the next day's minimum temperatures using a sine-exponential model.
Usage
estimate_hourly_temp(
t_min,
t_max,
t_min_next,
lat,
doy,
lon = NULL,
tz = NULL,
alpha = 2.75,
beta = 1.4,
gamma = 2.75
)Arguments
- t_min
Single numeric value of the current day's minimum temperature (°C).
- t_max
Single numeric value of the current day's maximum temperature (°C).
- t_min_next
Single numeric value of the next day's minimum temperature (°C).
- lat
Latitude of the location in decimal degrees.
- doy
Day of the year (Julian day, 1 to 365/366).
- lon
Optional. Longitude of the location in decimal degrees (negative for West). Default is
NULL(assumes local solar time where noon is 12:00).- tz
Optional. Time zone offset from UTC in hours (e.g., -3 for UTC-3). Default is
NULL.- alpha
Parameters for the time lag between solar noon and maximum temperature (hours). Default is 2.75.
- beta
Parameters for the time lag between minimum temperature and sunrise (hours). Default is 1.40.
- gamma
Parameter representing the temperature characteristics decay rate at night. Default is 2.75.
Value
A numeric vector of length 24 containing the reconstructed hourly temperatures (°C) from 00:00 to 23:00.
Examples
# Using default local solar time
estimate_hourly_temp(t_min = 12, t_max = 25, t_min_next = 13, lat = -27.28, doy = 150)
#> [1] 15.48837 14.90350 14.41670 14.01151 13.67425 13.39355 13.15990 12.96543
#> [9] 12.80356 13.39885 15.10689 16.75962 18.32764 19.78303 21.09988 22.25476
#> [17] 23.22710 23.99961 22.62654 21.01254 19.66914 18.55098 17.62029 16.84564
# Accounting for civil time with longitude and time zone offset
estimate_hourly_temp(
t_min = 12, t_max = 25, t_min_next = 13,
lat = -27.28, doy = 150, lon = -50.58, tz = -3
)
#> [1] 15.70483 15.08367 14.56665 14.13632 13.77814 13.48002 13.23187 13.02533
#> [9] 12.85343 12.83161 14.55120 16.22538 17.82435 19.31965 20.68466 21.89508
#> [17] 22.92938 23.76914 23.22388 21.50972 20.08297 18.89542 17.90698 17.08427