Rotated to Regular Grid

Author: O.Conrad (c) 2021
Menu: Projection | Tools

Description

This tool projects grids using rotated-pole coordinates to regular geographic grids. Rotated-pole coordinates are used by the CORDEX project.

CORDEX Domains

CORDEX Area	Name	Resolution	N-Pole/Lon.	N-Pole/Lat.
South America	SAM-44	0.44	-56.06	70.60
Central America	CAM-44	0.44	113.98	75.74
North America	NAM-44	0.44	83.00	42.50
Europe	EUR-44	0.44	-162.00	39.25
Africa	AFR-44	0.44	N/A	90.00
South Asia	WAS-44	0.44	-123.34	79.95
East Asia	EAS-44	0.44	-64.78	77.61
Central Asia	CAS-44	0.44	-103.39	43.48
Australasia	AUS-44	0.44	141.38	60.31
Antarctica	ANT-44	0.44	-166.92	6.08
Arctic	ARC-44	0.44	0.00	6.55
Mediterranean	MED-44	0.44	198.00	39.25
M-East, N-Africa	MNA-44	0.44	N/A	90.00
M-East, N-Africa	MNA-22	0.22	N/A	90.00
Europe	EUR-11	0.11	-162.00	39.25
South East Asia	SEA-22	0.22	N/A	90.00

References

CORDEX Archive Specifications

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Grids	grid list, input	`SOURCE`	-	-
Input	Target System	grid, input, optional	`TARGET_TEMPLATE`	use this grid's system for output grids	-
Output	Grids	grid list, output	`TARGET`	-	-
Output	Extent	shapes, output, optional	`EXTENT`	-	-
Options	Grid System	grid system	`PARAMETERS_GRID_SYSTEM`	-	-
	Longitude	floating point number	`ROT_POLE_LON`	-	Default: -162.000000
	Latitude	floating point number	`ROT_POLE_LAT`	-	Default: 39.250000
	Target Grid System	choice	`TARGET_DEFINITION`	-	Available Choices: [0] user defined [1] grid or grid system Default: 0
	Cellsize	floating point number	`TARGET_USER_SIZE`	-	Minimum: 0.000000 Default: 1.000000
	West	floating point number	`TARGET_USER_XMIN`	-	Default: 0.000000
	East	floating point number	`TARGET_USER_XMAX`	-	Default: 100.000000
	South	floating point number	`TARGET_USER_YMIN`	-	Default: 0.000000
	North	floating point number	`TARGET_USER_YMAX`	-	Default: 100.000000
	Columns	integer number	`TARGET_USER_COLS`	Number of cells in East-West direction.	Minimum: 1 Default: 101
	Rows	integer number	`TARGET_USER_ROWS`	Number of cells in North-South direction.	Minimum: 1 Default: 101
	Rounding	boolean	`TARGET_USER_FLAT`	Round bounding coordinates to multiples of cell size. Ignored if cell size has decimal places.	Default: 1
	Fit	choice	`TARGET_USER_FITS`	-	Available Choices: [0] nodes [1] cells Default: 0
	Grid System	grid system	`TARGET_SYSTEM`	-	-

Command Line


Usage: saga_cmd pj_proj4 18 [-SOURCE ] [-TARGET ] [-EXTENT ] [-ROT_POLE_LON ] [-ROT_POLE_LAT ] [-TARGET_DEFINITION ] [-TARGET_USER_SIZE ] [-TARGET_USER_XMIN ] [-TARGET_USER_XMAX ] [-TARGET_USER_YMIN ] [-TARGET_USER_YMAX ] [-TARGET_USER_COLS ] [-TARGET_USER_ROWS ] [-TARGET_USER_FLAT ] [-TARGET_USER_FITS ] [-TARGET_TEMPLATE ]
  -SOURCE:             	Grids
	grid list, input
  -TARGET:             	Grids
	grid list, output
  -EXTENT:             	Extent
	shapes, output, optional
  -ROT_POLE_LON:    	Longitude
	floating point number
	Default: -162.000000
  -ROT_POLE_LAT:    	Latitude
	floating point number
	Default: 39.250000
  -TARGET_DEFINITION:  	Target Grid System
	choice
	Available Choices:
	[0] user defined
	[1] grid or grid system
	Default: 0
  -TARGET_USER_SIZE:	Cellsize
	floating point number
	Minimum: 0.000000
	Default: 1.000000
  -TARGET_USER_XMIN:	West
	floating point number
	Default: 0.000000
  -TARGET_USER_XMAX:	East
	floating point number
	Default: 100.000000
  -TARGET_USER_YMIN:	South
	floating point number
	Default: 0.000000
  -TARGET_USER_YMAX:	North
	floating point number
	Default: 100.000000
  -TARGET_USER_COLS:   	Columns
	integer number
	Minimum: 1
	Default: 101
  -TARGET_USER_ROWS:   	Rows
	integer number
	Minimum: 1
	Default: 101
  -TARGET_USER_FLAT:   	Rounding
	boolean
	Default: 1
  -TARGET_USER_FITS:   	Fit
	choice
	Available Choices:
	[0] nodes
	[1] cells
	Default: 0
  -TARGET_TEMPLATE:    	Target System
	grid, input, optional