Calculates the duration of daylight (time between sunrise and sunset) for a given
location and season on Mars. Implements Equation 10 from Appelbaum &amp; Flood (1990).

A set of functions to calculate solar irradiance and insolation on Mars horizontal and inclined surfaces. Based on NASA Technical Memoranda 102299, 103623, 105216, 106321, and 106700, i.e. the canonical Mars solar radiation papers.

Georges Labrèche

marsrad

Mars Solar Radiation

T_d function

<dl><dt>Ls</dt>
<dd>Areocentric longitude [deg]</dd>
<dt>phi</dt>
<dd>Planetary latitude [deg]</dd></dl>

Arguments

Number of Mars daylight hours — T_d

<dl>

<dt>Ls</dt>
<dd>Areocentric longitude [deg]</dd>


<dt>phi</dt>
<dd>Planetary latitude [deg]</dd>

</dl>

T_d: Number of Mars daylight hours

Description

Usage

Value

Arguments