/disk01/web/ocssw/build/src/l2gen/ice_mask.c File Reference

(r8087/r5616)

#include "l12_proto.h"

Go to the source code of this file.

Defines
#define	NX   4096
#define	NY   2048
#define	NAMING_CONVENTION_REFERENCE   "http://nsidc.org/data/docs/daac/nsidc0051_gsfc_seaice.gd.html#namingconvention"
#define	NROWS   448
#define	NCOLS   304
#define	SROWS   332
#define	SCOLS   316
#define	RE   6378.273 /* Earth's equatorial radius */
#define	EC   0.081816153 /* Eccentricity */
#define	E2   0.006693883 /* Eccentricity squared */
#define	SLAT   70.0 /* Standard latitude */
#define	CELL   25.0 /* Stereographic pixel dimension (km) */
#define	NODATA   -1.0
#define	COPYNAME(orig, copy)
#define	READIT(file, handle, rows, cols, array)
Functions
int	ice_mask_init_old (char *file, int day, int32 sd_id)
char	ice_mask_old (float lon, float lat)
float	get_icefrac_old (float lon, float lat)
int	ice_mask_init_nsidc_raw (char *file)
int	ice_mask_init_monthly (char *file, int year, int day, int32 sd_id)
int	ice_mask_init_daily (char *file, int year, int day, int32 sd_id)
float	get_icefrac_nsidc (float lon, float lat)
char	ice_mask_nsidc (float lon, float lat)
int	ice_mask_init (char *file, int year, int day, float threshold)
char	ice_mask (float lon, float lat)
float	ice_fraction (float lon, float lat)

---

Define Documentation

#define CELL   25.0 /* Stereographic pixel dimension (km) */

Definition at line 37 of file ice_mask.c.

#define COPYNAME	(		orig,
			copy
	)

Value:

{                   \
(copy) = (char *)strdup( orig );                \
if( (copy) == NULL ){                       \
  fprintf(stderr,"-E- %s line %d: Memory allocation error\n",   \
  __FILE__,__LINE__);                       \
  exit(EXIT_FAILURE);                       \
}                               \
}

Definition at line 135 of file ice_mask.c.

#define E2   0.006693883 /* Eccentricity squared */

Definition at line 35 of file ice_mask.c.

#define EC   0.081816153 /* Eccentricity */

Definition at line 34 of file ice_mask.c.

#define NAMING_CONVENTION_REFERENCE   "http://nsidc.org/data/docs/daac/nsidc0051_gsfc_seaice.gd.html#namingconvention"

Definition at line 25 of file ice_mask.c.

#define NCOLS   304

Definition at line 29 of file ice_mask.c.

#define NODATA   -1.0

Definition at line 38 of file ice_mask.c.

#define NROWS   448

Definition at line 28 of file ice_mask.c.

#define NX   4096

Definition at line 13 of file ice_mask.c.

#define NY   2048

Definition at line 14 of file ice_mask.c.

#define RE   6378.273 /* Earth's equatorial radius */

Definition at line 33 of file ice_mask.c.

#define READIT	(		file,
			handle,
			rows,
			cols,
			array
	)

Value:

{               \
if( ( (handle) = fopen((file),"rb")) == NULL ){             \
  fprintf(stderr,"-E- %s line %d: Could not open file, \"%s\" .\n", \
  __FILE__,__LINE__,(file));                        \
  perror("");                               \
  exit(EXIT_FAILURE);                           \
}                                   \
if( fseek( (handle) ,300,SEEK_SET) == -1 ){             \
  fprintf(stderr,                           \
  "-E- %s line %d: Could not skip header of file, \"%s\" .\n",      \
  __FILE__,__LINE__,(file));                        \
  perror("");                               \
  exit(EXIT_FAILURE);                           \
}                                   \
if(                                 \
fread((array), sizeof(unsigned char), (rows)*(cols), handle)        \
!= (rows)*(cols)                            \
){                                  \
  fprintf(stderr,"-E- %s line %d: Error reading file, \"%s\" .\n",  \
  __FILE__,__LINE__,(file));                        \
  perror("");                               \
  exit(EXIT_FAILURE);                           \
}                                   \
}

Definition at line 144 of file ice_mask.c.

#define SCOLS   316

Definition at line 31 of file ice_mask.c.

#define SLAT   70.0 /* Standard latitude */

Definition at line 36 of file ice_mask.c.

#define SROWS   332

Definition at line 30 of file ice_mask.c.

---

Function Documentation

float get_icefrac_nsidc	(	float	lon,
		float	lat
	)

Definition at line 472 of file ice_mask.c.

float get_icefrac_old	(	float	lon,
		float	lat
	)

Definition at line 126 of file ice_mask.c.

float ice_fraction	(	float	lon,
		float	lat
	)

Definition at line 790 of file ice_mask.c.

char ice_mask	(	float	lon,
		float	lat
	)

Definition at line 775 of file ice_mask.c.

int ice_mask_init	(	char *	file,
		int	year,
		int	day,
		float	threshold
	)

Definition at line 696 of file ice_mask.c.

int ice_mask_init_daily	(	char *	file,
		int	year,
		int	day,
		int32	sd_id
	)

Definition at line 363 of file ice_mask.c.

int ice_mask_init_monthly	(	char *	file,
		int	year,
		int	day,
		int32	sd_id
	)

Definition at line 218 of file ice_mask.c.

int ice_mask_init_nsidc_raw

(

char *

file

)

Definition at line 170 of file ice_mask.c.

int ice_mask_init_old	(	char *	file,
		int	day,
		int32	sd_id
	)

Definition at line 45 of file ice_mask.c.

char ice_mask_nsidc	(	float	lon,
		float	lat
	)

Definition at line 675 of file ice_mask.c.

char ice_mask_old	(	float	lon,
		float	lat
	)

Definition at line 116 of file ice_mask.c.