T_g: Mean daytime air temperature

In special-uor/codos: CO2 Correction Tools

Description

Mean daytime air temperature (T_g) was estimated for each month by assuming the diurnal temperature cycle to follow a sine curve, with daylight hours determined by latitude and month.

Usage

T_g(lat, delta, tmx, tmn)

Arguments

lat	Latitude (λ).
delta	Monthly average solar declination (δ).
tmx	Maximum value of temperature (T_{max}).
tmn	Minimum value of temperature (T_{min}).

Details

Given by (7):

T_g = T_{max}≤ft[\frac{1}{2} + \frac{(1-x^2)^{1/2}}{2 \cos^{-1}{x}}\right] + T_{min}≤ft[\frac{1}{2} - \frac{(1-x^2)^{1/2}}{2 \cos^{-1}{x}}\right]

where

x = -\tan{λ}\tan{δ}.

Value

Mean daytime air temperature.

special-uor/codos documentation built on Jan. 7, 2022, 2:32 a.m.