met.h File Reference

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Macros
#define	MIN_LAGDAY_AIR   1.5 /* TIME LAG IN MAXIMUM TEMPERATURE AFTER NOON (HR). PL MODEL USES 1.86 */
#define	MAX_LAGDAY_AIR   5.5 /* TIME LAG IN MAXIMUM TEMPERATURE AFTER NOON (HR). PL MODEL USES 1.86 */
#define	MIN_LAGNIGHT_AIR   -1.0 /* TIME LAG FOR THE MINIMUM TEMPERATURE AFTER SUNRISE (HR). PL MODEL USES -0.17 */
#define	MAX_LAGNIGHT_AIR   1.5 /* TIME LAG FOR THE MINIMUM TEMPERATURE AFTER SUNRISE (HR). PL MODEL USES -0.17 */
#define	MIN_NDECAY_AIR   1.5 /* COEFFICIENT THAT CONTROLS TEMPERATURE DECREASE AT NIGHT. PL MODEL USES 2.2 */
#define	MAX_NDECAY_AIR   3.5 /* COEFFICIENT THAT CONTROLS TEMPERATURE DECREASE AT NIGHT. PL MODEL USES 2.2 */
#define	MIN_LAGDAY_GND   0.5 /* TIME LAG IN MAXIMUM TEMPERATURE AFTER NOON (HR). PL MODEL USES 0.5 */
#define	MAX_LAGDAY_GND   2.5 /* TIME LAG IN MAXIMUM TEMPERATURE AFTER NOON (HR). PL MODEL USES 0.5 */
#define	MIN_LAGNIGHT_GND   0.0 /* TIME LAG FOR THE MINIMUM TEMPERATURE AFTER SUNRISE (HR). PL MODEL USES 0.49 */
#define	MAX_LAGNIGHT_GND   2.0 /* TIME LAG FOR THE MINIMUM TEMPERATURE AFTER SUNRISE (HR). PL MODEL USES 0.49 */
#define	MIN_NDECAY_GND   1.5 /* COEFFICIENT THAT CONTROLS TEMPERATURE DECREASE AT NIGHT. PL MODEL USES 1.81 */
#define	MAX_NDECAY_GND   5.5 /* COEFFICIENT THAT CONTROLS TEMPERATURE DECREASE AT NIGHT. PL MODEL USES 1.81 */
#define	TaTearthMaxDiff   20.0 /* MAX DIFFERENCE BETWEEN AIR AND GROUND TEMPERATURE */

Functions
SIGSIM_API int	Met4x (METIN *metin, int air_model_option)
void	GetLagTimesAir (double TaveC, double rhfrac, double xmit, double windspeed, double *LAGDAY_AIR, double *LAGNIGHT_AIR, double *NDECAY_AIR)
void	GetLagTimesGnd (double TaveC, double rhfrac, double xmit, double windspeed, double *LAGDAY_GND, double *LAGNIGHT_GND, double *NDECAY_GND)
double	get_delayed_tod (double tod, double sunrise, double sunset, double LAGDAY_AIR, double LAGNIGHT_AIR)
void	get_groundtemp_limits (double rhfrac, double xmit, double Tamax, double Tamin, double *Tgmax, double *Tgmin)
SIGSIM_API double	Tenvironment (double met_tod, double sunrise, double sunset, double Tmax, double Tmin, int air_model_option, double LAGDAY, double LAGNIGHT, double NDECAY)
SIGSIM_API double	Tair_degC (double met_tod, double sunrise, double sunset, double Tamax, double Tamin, int air_model_option, double rhfrac, double xmit, double windspeed)
SIGSIM_API double	Tgnd_degC (double tod, double sunrise, double sunset, double Tamax, double Tamin, int air_model_option, double rhfrac, double xmit, double windspeed)
SIGSIM_API int	FillMetinUserDefinedAirTempArray (METIN *metin, double *tod, double *Ta, int ntod)
double	lunar_albedo (double lambda)
SIGSIM_API void	CalcLongitudinalJRMTIMEs (ellipsoid E, GEODETIC_LOCATION localD, JRMTIME localzone, JRMTIME *local, JRMTIME *UTC, double *local_zone_offset)
void	CalcBodyVectorInEarthCenteredFrameAtGeoD (double lat_rad, double dec_rad, double ra_rad, double sa_rad, VECTOR *body)
void	SolarEphemerides (JRMTIME ptime, double *dec_rad, double *ra_rad, double *range_km)
void	SunriseSunset (double lat_rad, double dec_rad, double lhn, double *sunrise, double *sunset)
SIGSIM_API double	SiderealTime (double lon_rad, JRMTIME ptime)
GEODETIC_LOCATION	CalcBodyGeodeticPositionGivenVecInEarthCenteredFrameAtGeoD (ellipsoid E, GEODETIC_LOCATION localD, VECTOR body, double range)
void	SolarEphemerisSEU (ellipsoid E, GEODETIC_LOCATION localD, JRMTIME localzone, VECTOR *sunmax, VECTOR *sunplane, VECTOR *suneast, double *lhn, double *sunrise, double *sunset, VECTOR *sun, double *az_deg, double *el_deg, double *raSun, double *decSun, double *rangeSun, double *sunlat_deg, double *sunlon_deg)
void	LunarEphemerisSEU (ellipsoid E, GEODETIC_LOCATION localD, JRMTIME localzone, VECTOR *moon, double *raMoon, double *decMoon, double *rangeMoon, double *az_deg, double *el_deg, double *moonlat_deg, double *moonlon_deg)
double	MoonElongationFromEphemerides (double raSun, double decSun, double raMoon, double decMoon)
double	MoonElongationFromGeodetics (double lonSun, double lonMoon, double latMoon)
double	MoonPhaseFromElongation (double elongation, double rangeSun, double rangeMoon)
double	MoonIlluminatedFraction (double phase)
void	CalcMoonPhaseAndIlluminatedFraction (EPHEMERIS *fm)
VECTOR	MoonInMetinSEU (GEOCENTRIC_LOCATION moon, GEOCENTRIC_LOCATION met, ellipsoid E)
SIGSIM_API GEOCENTRIC_LOCATION	GeocentricMoonPosition (double julianDay, ellipsoid E, double *range_m, double *dec_rad, double *ra_rad)
SIGSIM_API GEOCENTRIC_LOCATION	GeocentricMoonPosition2 (double julianDay, ellipsoid E, double *range_m, double *dec_rad, double *ra_rad)
SIGSIM_API int	DoEphemeris (EPHEMERIS *fm)
SIGSIM_API int	DuplicateModtranAtm_DefaultLogic (ATM_DEFAULT *atm_default, double *RainRate, double *Visibility, jrmbool RESET)
SIGSIM_API void	earthtilt (double tjd, double *mobl, double *tobl, double *eq, double *dpsi, double *deps)
void	fund_args (double t, double a[5])
short int	nutation_angles (double t, double *longnutation, double *obliqnutation)
SIGSIM_API void	sidereal_time (double jd_high, double jd_low, double ee, double *gst)
SIGSIM_API void	terra (EPHEMERIS fm, double alt, double st, VECTOR *pos)
void	spin (EPHEMERIS fm, double st, VECTOR pos1, VECTOR *pos2)

Macro Definition Documentation

#define MIN_LAGDAY_AIR   1.5 /* TIME LAG IN MAXIMUM TEMPERATURE AFTER NOON (HR). PL MODEL USES 1.86 */

#define MAX_LAGDAY_AIR   5.5 /* TIME LAG IN MAXIMUM TEMPERATURE AFTER NOON (HR). PL MODEL USES 1.86 */

#define MIN_LAGNIGHT_AIR   -1.0 /* TIME LAG FOR THE MINIMUM TEMPERATURE AFTER SUNRISE (HR). PL MODEL USES -0.17 */

#define MAX_LAGNIGHT_AIR   1.5 /* TIME LAG FOR THE MINIMUM TEMPERATURE AFTER SUNRISE (HR). PL MODEL USES -0.17 */

#define MIN_NDECAY_AIR   1.5 /* COEFFICIENT THAT CONTROLS TEMPERATURE DECREASE AT NIGHT. PL MODEL USES 2.2 */

#define MAX_NDECAY_AIR   3.5 /* COEFFICIENT THAT CONTROLS TEMPERATURE DECREASE AT NIGHT. PL MODEL USES 2.2 */

#define MIN_LAGDAY_GND   0.5 /* TIME LAG IN MAXIMUM TEMPERATURE AFTER NOON (HR). PL MODEL USES 0.5 */

#define MAX_LAGDAY_GND   2.5 /* TIME LAG IN MAXIMUM TEMPERATURE AFTER NOON (HR). PL MODEL USES 0.5 */

#define MIN_LAGNIGHT_GND   0.0 /* TIME LAG FOR THE MINIMUM TEMPERATURE AFTER SUNRISE (HR). PL MODEL USES 0.49 */

#define MAX_LAGNIGHT_GND   2.0 /* TIME LAG FOR THE MINIMUM TEMPERATURE AFTER SUNRISE (HR). PL MODEL USES 0.49 */

#define MIN_NDECAY_GND   1.5 /* COEFFICIENT THAT CONTROLS TEMPERATURE DECREASE AT NIGHT. PL MODEL USES 1.81 */

#define MAX_NDECAY_GND   5.5 /* COEFFICIENT THAT CONTROLS TEMPERATURE DECREASE AT NIGHT. PL MODEL USES 1.81 */

#define TaTearthMaxDiff   20.0 /* MAX DIFFERENCE BETWEEN AIR AND GROUND TEMPERATURE */

Function Documentation

SIGSIM_API int Met4x	(	METIN *	metin,
		int	air_model_option
	)

void GetLagTimesAir	(	double	TaveC,
		double	rhfrac,
		double	xmit,
		double	windspeed,
		double *	LAGDAY_AIR,
		double *	LAGNIGHT_AIR,
		double *	NDECAY_AIR
	)

void GetLagTimesGnd	(	double	TaveC,
		double	rhfrac,
		double	xmit,
		double	windspeed,
		double *	LAGDAY_GND,
		double *	LAGNIGHT_GND,
		double *	NDECAY_GND
	)

double get_delayed_tod	(	double	tod,
		double	sunrise,
		double	sunset,
		double	LAGDAY_AIR,
		double	LAGNIGHT_AIR
	)

void get_groundtemp_limits	(	double	rhfrac,
		double	xmit,
		double	Tamax,
		double	Tamin,
		double *	Tgmax,
		double *	Tgmin
	)

SIGSIM_API double Tenvironment	(	double	met_tod,
		double	sunrise,
		double	sunset,
		double	Tmax,
		double	Tmin,
		int	air_model_option,
		double	LAGDAY,
		double	LAGNIGHT,
		double	NDECAY
	)

SIGSIM_API double Tair_degC	(	double	met_tod,
		double	sunrise,
		double	sunset,
		double	Tamax,
		double	Tamin,
		int	air_model_option,
		double	rhfrac,
		double	xmit,
		double	windspeed
	)

SIGSIM_API double Tgnd_degC	(	double	tod,
		double	sunrise,
		double	sunset,
		double	Tamax,
		double	Tamin,
		int	air_model_option,
		double	rhfrac,
		double	xmit,
		double	windspeed
	)

SIGSIM_API int FillMetinUserDefinedAirTempArray	(	METIN *	metin,
		double *	tod,
		double *	Ta,
		int	ntod
	)

double lunar_albedo

(

double

lambda

)

SIGSIM_API void CalcLongitudinalJRMTIMEs	(	ellipsoid	E,
		GEODETIC_LOCATION	localD,
		JRMTIME	localzone,
		JRMTIME *	local,
		JRMTIME *	UTC,
		double *	local_zone_offset
	)

void CalcBodyVectorInEarthCenteredFrameAtGeoD	(	double	lat_rad,
		double	dec_rad,
		double	ra_rad,
		double	sa_rad,
		VECTOR *	body
	)

void SolarEphemerides	(	JRMTIME	ptime,
		double *	dec_rad,
		double *	ra_rad,
		double *	range_km
	)

void SunriseSunset	(	double	lat_rad,
		double	dec_rad,
		double	lhn,
		double *	sunrise,
		double *	sunset
	)

SIGSIM_API double SiderealTime	(	double	lon_rad,
		JRMTIME	ptime
	)

GEODETIC_LOCATION CalcBodyGeodeticPositionGivenVecInEarthCenteredFrameAtGeoD	(	ellipsoid	E,
		GEODETIC_LOCATION	localD,
		VECTOR	body,
		double	range
	)

void SolarEphemerisSEU	(	ellipsoid	E,
		GEODETIC_LOCATION	localD,
		JRMTIME	localzone,
		VECTOR *	sunmax,
		VECTOR *	sunplane,
		VECTOR *	suneast,
		double *	lhn,
		double *	sunrise,
		double *	sunset,
		VECTOR *	sun,
		double *	az_deg,
		double *	el_deg,
		double *	raSun,
		double *	decSun,
		double *	rangeSun,
		double *	sunlat_deg,
		double *	sunlon_deg
	)

void LunarEphemerisSEU	(	ellipsoid	E,
		GEODETIC_LOCATION	localD,
		JRMTIME	localzone,
		VECTOR *	moon,
		double *	raMoon,
		double *	decMoon,
		double *	rangeMoon,
		double *	az_deg,
		double *	el_deg,
		double *	moonlat_deg,
		double *	moonlon_deg
	)

double MoonElongationFromEphemerides	(	double	raSun,
		double	decSun,
		double	raMoon,
		double	decMoon
	)

double MoonElongationFromGeodetics	(	double	lonSun,
		double	lonMoon,
		double	latMoon
	)

double MoonPhaseFromElongation	(	double	elongation,
		double	rangeSun,
		double	rangeMoon
	)

double MoonIlluminatedFraction

(

double

phase

)

void CalcMoonPhaseAndIlluminatedFraction

(

EPHEMERIS *

fm

)

VECTOR MoonInMetinSEU	(	GEOCENTRIC_LOCATION	moon,
		GEOCENTRIC_LOCATION	met,
		ellipsoid	E
	)

SIGSIM_API GEOCENTRIC_LOCATION GeocentricMoonPosition	(	double	julianDay,
		ellipsoid	E,
		double *	range_m,
		double *	dec_rad,
		double *	ra_rad
	)

SIGSIM_API GEOCENTRIC_LOCATION GeocentricMoonPosition2	(	double	julianDay,
		ellipsoid	E,
		double *	range_m,
		double *	dec_rad,
		double *	ra_rad
	)

SIGSIM_API int DoEphemeris

(

EPHEMERIS *

fm

)

SIGSIM_API int DuplicateModtranAtm_DefaultLogic	(	ATM_DEFAULT *	atm_default,
		double *	RainRate,
		double *	Visibility,
		jrmbool	RESET
	)

SIGSIM_API void earthtilt	(	double	tjd,
		double *	mobl,
		double *	tobl,
		double *	eq,
		double *	dpsi,
		double *	deps
	)

void fund_args	(	double	t,
		double	a[5]
	)

short int nutation_angles	(	double	t,
		double *	longnutation,
		double *	obliqnutation
	)

SIGSIM_API void sidereal_time	(	double	jd_high,
		double	jd_low,
		double	ee,
		double *	gst
	)

SIGSIM_API void terra	(	EPHEMERIS	fm,
		double	alt,
		double	st,
		VECTOR *	pos
	)

void spin	(	EPHEMERIS	fm,
		double	st,
		VECTOR	pos1,
		VECTOR *	pos2
	)