NetCDF Synoptische Daten im Dreiecksgitter
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Kurze Beschreibung
Synoptische Daten an Einzelpositionen.
An anderer Stelle beschriebene Inhalte
- NetCDF Dreiecksgitter: Koordinaten, Topologie und Koordinatentransformation;
- NetCDF Zeitkoordinate: Koordinatenvariable time;
- NetCDF Vertikalkoordinate: Vertikalkoordinate depth oder height:
- node_depth_2d : Vertikalkoordinate für tiefengemittelte Daten an Knoten;
- edge_depth_2d : Vertikalkoordinate für tiefengemittelte Daten an Kanten;
- poly_depth_2d : Vertikalkoordinate für tiefengemittelte Daten an Polygonen.
- node_depth_3d : Vertikalkoordinate für tiefenstrukturierte Daten an Knoten;
- edge_depth_3d : Vertikalkoordinate für tiefenstrukturierte Daten an Kanten;
- poly_depth_3d : Vertikalkoordinate für tiefenstrukturierte Daten an Polygonen.
Bemerkung: Es werden verschiedene Vertikalkoordinaten benötigt, da in jedem Attribut formula_terms verschiedene Variablen für Wasserstand und Boden eingesetzt werden müssen.
Dimensionen
Soweit nicht oben festgelegt, mommen noch folgende Dimensionen hinzu:
- dimensions:
Ergänzende Informationen für das numerische Verfahren
Kennzeichnung offener und geschlossener Kanten
- integer Mesh2_edge_type(nMesh2_edge) ;
- Mesh2_edge_type:standard_name = "???" ; \\ yet to be defined
- Mesh2_edge_type:long_name = "type of 2D mesh edges, closed or open" ;
- Mesh2_edge_type:coordinates = "Mesh2_edge_lon Mesh2_edge_lat" ;
- Mesh2_edge_type:_FillValue = fillvalue ;
- Mesh2_edge_type:valid_range = 0, 1 ;
- Mesh2_edge_type:valid_values = 0, 1 ;
- Mesh2_edge_type:flag_meanings = "closed_edge, open_edge"
- Mesh2_edge_type:grid_mapping = "crs"
- integer Mesh2_edge_type(nMesh2_edge) ;
Kennzeichnung von Positionen für die Randwertsteuerung
Text fehlt noch.
Aktuelle (zeitvariable) Topografie
Es werden nur die Angaben für zeitvariable Topografie gemacht. Bei stationärer Topografie entfällt die Dimension time.
Knoten
- double Mesh2_node_depth(time,nMesh2_node) ;
- Mesh2_node_depth:standard_name = "sea_floor_depth_below_geoid" ;
- Mesh2_node_depth:long_name = "sea floor depth at 2D mesh nodes" ;
- Mesh2_node_depth:units = "m" ;
- Mesh2_node_depth:coordinates = "Mesh2_node_lon Mesh2_node_lat" ;
- Mesh2_node_depth:_FillValue = fillvalue ;
- Mesh2_node_depth:valid_range = valid minimum, valid maximum ;
- Mesh2_node_depth:cell_methods = "nMesh2_node: point" \\ depth is pointwise
- Mesh2_node_depth:grid_mapping = "crs"
- double Mesh2_node_depth(time,nMesh2_node) ;
Kanten
- double Mesh2_edge_depth(time,nMesh2_edge) ;
- Mesh2_edge_depth:standard_name = "sea_floor_depth_below_geoid" ;
- Mesh2_edge_depth:long_name = "sea floor depth for 2D mesh edges" ;
- Mesh2_edge_depth:units = "m" ;
- Mesh2_edge_depth:coordinates = "Mesh2_edge_lon Mesh2_edge_lat" ;
- Mesh2_edge_depth:_FillValue = fillvalue ;
- Mesh2_edge_depth:valid_range = valid minimum, valid maximum ;
- Mesh2_edge_depth:cell_methods = "nMesh2_edge: mean" ; \\ depth is constant along edge
- Mesh2_edge_depth:grid_mapping = "crs"
- double Mesh2_edge_depth(time,nMesh2_edge) ;
Polygone
- double Mesh2_poly_depth(time,nMesh2_poly) ;
- Mesh2_poly_depth:standard_name = "sea_floor_depth_below_geoid" ;
- Mesh2_poly_depth:long_name = "sea floor depth for 2D mesh polygons" ;
- Mesh2_poly_depth:units = "m" ;
- Mesh2_poly_depth:coordinates = "Mesh2_node_lon Mesh2_node_lat" ;
- Mesh2_poly_depth:_FillValue = fillvalue ;
- Mesh2_poly_depth:valid_range = valid minimum, valid maximum ;
- Mesh2_poly_depth:cell_methods = "nMesh2_poly: mean" ; \\ depth is constant within polygon
- Mesh2_poly_depth:grid_mapping = "crs"
- double Mesh2_poly_depth(time,nMesh2_poly) ;
Maximal zulässige Tiefe
- Vollständig analog zu Aktuelle Tiefe vorgehen, jedoch ohne Dimension time.
- Vorschlag für die Namensgebung:
- Knoten: "Mesh2_node_max_depth(nMesh2_node)" ;
- Kanten: "Mesh2_edge_max_depth(nMesh2_edge)" ;
- Polygone: "Mesh2_poly_max_depth(nMesh2_poly)" .
Weitere Daten ohne Tiefenabhängigkeit
Wasserstand
Typischer Weise liegt der Wasserstand entweder (punktweise) am Knoten oder konstant im Polygon vor.
Knoten
- double Mesh2_node_water_level(time,nMesh2_node) ;
- Mesh2_node_water_level:standard_name = "sea_surface_height_above_geoid" ;
- Mesh2_node_water_level:long_name = "water level for 2D mesh nodes" ;
- Mesh2_node_water_level:units = "m" ;
- Mesh2_node_water_level:coordinates = "Mesh2_node_lon Mesh2_node_lat" ;
- Mesh2_node_water_level:_FillValue = fillvalue ;
- Mesh2_node_water_level:valid_range = valid minimum, valid maximum ;
- Mesh2_node_water_level:cell_methods = "nMesh2_node: point" ;
- Mesh2_node_water_level:grid_mapping = "crs" ;
- double Mesh2_node_water_level(time,nMesh2_node) ;
Polygon
- double Mesh2_poly_water_level(time,nMesh2_poly) ;
- Mesh2_poly_water_level:standard_name = "sea_surface_height_above_geoid" ;
- Mesh2_poly_water_level:long_name = "water level for 2D mesh polygons" ;
- Mesh2_poly_water_level:units = "m" ;
- Mesh2_poly_water_level:coordinates = "Mesh2_poly_lon Mesh2_poly_lat" ;
- Mesh2_poly_water_level:_FillValue = fillvalue ;
- Mesh2_poly_water_level:valid_range = valid minimum, valid maximum ;
- Mesh2_poly_water_level:cell_methods = "nMesh2_poly: mean" ;
- Mesh2_poly_water_level:grid_mapping = "crs" ;
- double Mesh2_poly_water_level(time,nMesh2_poly) ;
Tiefengemittelte Daten
Tiefengemittelte Daten eigentlich tiefenstrukturierter Daten werden von einem Simulationsprogramm ggf. ebenfalls in Datei geschrieben.
Salzgehalt
Der über die Wassertiefe von dem Modellverfahren gemittelte Salzgehalt liegt in der Regel entweder (punktweise) an den Daten oder (konstant) im Polygon vor.
Knoten
- double Mesh2_node_salinity_2d(time,node_depth_2d,nMesh2_node) ;
- Mesh2_node_salinity:standard_name = "sea_water_salinity" ;
- Mesh2_node_salinity:long_name = "salinity for 2D mesh nodes, depth averaged" ;
- Mesh2_node_salinity:units = "0.001" ;
- Mesh2_node_salinity:coordinates = "Mesh2_node_lon Mesh2_node_lat" ;
- Mesh2_node_salinity:_FillValue = fillvalue ;
- Mesh2_node_salinity:valid_range = valid minimum, valid maximum ;
- Mesh2_node_salinity:cell_methods = "node_depth_2d: mean" ; \\ pointwise depth averaged
- Mesh2_node_salinity:grid_mapping = "crs" ;
- double Mesh2_node_salinity_2d(time,node_depth_2d,nMesh2_node) ;
Polygone
- double Mesh2_poly_salinity_3d(time,poly_depth_2d,nMesh2_poly) ;
- Mesh2_poly_salinity:standard_name = "sea_water_salinity" ;
- Mesh2_poly_salinity:long_name = "salinity for 2D mesh nodes, depth averaged" ;
- Mesh2_poly_salinity:units = "0.001" ;
- Mesh2_poly_salinity:coordinates = "Mesh2_node_lon Mesh2_node_lat" ;
- Mesh2_poly_salinity:_FillValue = fillvalue ;
- Mesh2_poly_salinity:valid_range = valid minimum, valid maximum ;
- Mesh2_poly_salinity:cell_methods = "node_depth_2d: mean nMesh2_poly: mean" ; \\ volume averaged
- Mesh2_poly_salinity:grid_mapping = "crs" ;
- double Mesh2_poly_salinity_3d(time,poly_depth_2d,nMesh2_poly) ;
Strömungsgeschwindigkeit, x-Komponente (Code = 14)
- double node_velocity_x(time,vedge) ;
- node_velocity_x:standard_name = "sea_water_x_velocity" ; \\ or better eastward_sea_water_velocity
- node_velocity_x:long_name = "current velocity in x-direction" ;
- node_velocity_x:units = "m s-1" ;
- node_velocity_x:coordinates = "node_long_name node_lon node_lat"
- node_velocity_x:_FillValue = "fillvalue"
- node_velocity_x:valid_range = "valid minimum, valid maximum"
- node_velocity_x:cell_methods = "height: mean"
- node_velocity_x:grid_mapping = "crs"
- double node_velocity_x(time,vedge) ;
Strömungsgeschwindigkeit, y-Komponente (Code = 15)
- double node_velocity_y(time,vedge) ;
- node_velocity_y:standard_name = "sea_water_y_velocity" ; \\ or better northward_sea_water_velocity
- ... weitere Attribute analog zur x-Komponente der Strömungsgeschwindigkeit
- double node_velocity_y(time,vedge) ;
Strömungsgeschwindigkeit, z-Komponente (Code = 1029)
- double node_velocity_z(time,vedge) ;
- node_velocity_z:standard_name = "upward_sea_water_velocity" ;
- ... weitere Attribute analog zur x-Komponente der Strömungsgeschwindigkeit
- double node_velocity_z(time,vedge) ;
Schwebstoffgehalt, Gesamtmenge (Code = 7)
- double node_suspended_matter(time,vedge) ;
- node_suspended_matter:standard_name = "mass_concentration_of_suspended_matter_in_sea_water" ;
- node_suspended_matter:long_name = "mass concentration of suspended sediments" ;
- node_suspended_matter:units = "kg m-3" ;
- node_suspended_matter:coordinates = "node_long_name node_lon node_lat"
- node_suspended_matter:_FillValue = "fillvalue"
- node_suspended_matter:valid_range = "valid minimum, valid maximum"
- node_suspended_matter:cell_methods = "height: mean"
- node_suspended_matter:grid_mapping = "crs"
- double node_suspended_matter(time,vedge) ;
Schwebstoffgehalt, Fraktionen (Code = 7)
- double node_suspended_matter_classes(suspension_classes,time,vedge) ;
- node_suspended_matter_classes:standard_name = "mass_concentration_of_suspended_matter_in_sea_water" ;
- node_suspended_matter_classes:long_name = "mass concentration of suspended sediment fraction" ;
- node_suspended_matter_classes:units = "kg m-3" ;
- node_suspended_matter_classes:coordinates = "node_long_name node_lon node_lat"
- node_suspended_matter_classes:_FillValue = "fillvalue"
- node_suspended_matter_classes:valid_range = "valid minimum, valid maximum"
- node_suspended_matter_classes:cell_methods = "height: mean"
- node_suspended_matter_classes:grid_mapping = "crs"
- double node_suspended_matter_classes(suspension_classes,time,vedge) ;
Hilfsfelder
Kompression von height und node
- integer vedge(vedge) ;
- vedge:compress="height node"
- integer vedge(vedge) ;
Bezeichnung der Schwebstoffklassen
- char suspended_matter_classes_long_name(suspension_classes,strlen1) ;
- suspended_matter_classes_long_name:long_name = "long name of suspension class"
- char suspended_matter_classes_long_name(suspension_classes,strlen1) ;
Anmerkungen, Fragen
- Datei ist vollständig CF-konform - keine Erweiterungen erforderlich!
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