Ozone Utilities

Data Structures
struct	OzoneCell
	Ozone Grid Cell. More...
struct	Ozone
	Ozone Data. More...

Macros
#define	DEG_TO_RAD(a)   (a * 0.017453292519943)
	Convert degrees to radians.

Functions
void	ozone_free (Ozone *ozone)
	Free an Ozone Structure.
Ozone *	ozone_init (size_t nlats, float *lats, size_t nlons, float *lons, float **o3rhos, float fwhm, float max_dist, int min_cells, Ozone *ozone)
	Initialize an Ozone Structure.
float	ozone_get_columnar_density (Ozone *ozone, float lat, float lon)
	Get the ozone columnar density at a specific location.

---

Detailed Description

---

Function Documentation

void ozone_free

(

Ozone *

ozone

)

Free an Ozone Structure.

Parameters:

ozone

- pointer to the Ozone structure.

Definition at line 65 of file ozone_utils.c.

float ozone_get_columnar_density	(	Ozone *	ozone,
		float	lat,
		float	lon
	)

Get the ozone columnar density at a specific location.

Parameters:

ozone	pointer to the Ozone structure.
lat	latitude of location in degrees.
lon	longitude of location in degrees.

Return values:

ozone	columnar density
-1	if not enough points were available

Definition at line 181 of file ozone_utils.c.

Ozone* ozone_init	(	size_t	nlats,
		float *	lats,
		size_t	nlons,
		float *	lons,
		float **	o3rhos,
		float	fwhm,
		float	max_dist,
		int	min_cells,
		Ozone *	ozone
	)

Initialize an Ozone Structure.

The memory used by the returned structure is dynamically allocated and must be freed using the ozone_free() function.

Parameters:

nlats	- the number of latitudes
lats	- latitude of center of grid cells in degrees
nlons	- the number of longitudes
lons	- longitudes of center of grid cells in degrees
o3rhos	- ozone columnar densities in Dobson Units [lon][lat]
fwhm	- full width half maximum in degrees
max_dist	- maximum distance to use in degrees
min_cells	- minimum number of grid cells required
ozone	- pointer to the Ozone structure, or NULL to create a new Ozone structure.

Returns:

:

• pointer to the Ozone structure
• NULL if a memory allocation error occurred

Definition at line 98 of file ozone_utils.c.