NetCDF Einzelpositionen

Kurze Beschreibung

Es wird die Lage mehrerer Einzelpositionen beschrieben.

Inhalt der Datei

Dimensionen

dimensions:

nMesh0_node = number of locations ;

Lokale Koordinaten

double Mesh0_node_x(nMesh0_node) ;

Mesh0_node_x:standard_name = "projection_x_coordinate" ;

Mesh0_node_x:long_name = "x-coordinate of location" ;

Mesh0_node_x:units = "m" ;

double Mesh0_node_y(nMesh0_node) ;

Mesh0_node_y:standard_name = "projection_y_coordinate" ;

Mesh0_node_y:long_name = "y-coordinate of location" ;

Mesh0_node_y:units = "m" ;

Geografische Koordinaten

double Mesh0_node_lon(nMesh0_node) ;

Mesh0_node_lon:standard_name = "longitude" ;

Mesh0_node_lon:long_name = "longitude of location" ;

Mesh0_node_lon:units = "degrees_east" ;

double Mesh0_node_lat(nMesh0_node) ;

Mesh0_node_lat:standard_name = "latitude" ;

Mesh0_node_lat:long_name = "latitude of location" ;

Mesh0_node_lat:units = "degrees_north" ;

Topologievariable

integer Mesh0 ;

Mesh0:standard_name = "???" ; \\ yet to be determined

Mesh0:long_name = "name of (location) grid can be stored here" ;

Mesh0:dimensionality = 0 ; \\ just points, no topology

Mesh0:locations = "node" ;

Mesh0:node_coordinates = "Mesh0_node_lon Mesh0_node_lat" ;

Mesh0:edge_coordinates = "" ;

Mesh0:poly_coordinates = "" ;

Mesh0:edge_node_connectivity = "" ;

Mesh0:poly_node_connectivity = "" ;

Mesh0:edge_poly_connectivity = "" ;

Koordinatentransformation

integer crs ; \\ value is equivalent to the EPSG code of the transformation

crs:grid_mapping_name = "transverse_mercator" ;

crs:scale_factor_at_central_merdian = value ;

crs:longitude_of_central_meridian = value ;

crs:latitude_of_projection_origin = value ;

crs:false_easting = value ;

crs:false_northing = value ;

Anmerkungen, Fragen

• Datei nutzt Deltares-CF-Erweiterungen. Ausnahme ist das Attribut edge_poly_cennectivity in der Topologievariable.
• Die Beschreibung der Koordinatentransformation ist für UTM- und Gauß-Krüger-Koordinaten geeignet.

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