Data Access Form

Dataset Title:	SalishSeaCast NEMO Model Grid, 3D Mesh Mask, v21-08
Institution:	UBC EOAS (Dataset ID: ubcSSn3DMeshMaskV21-08)
Information:	Summary \| License \| Metadata \| Background \| Make a graph

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Dimensions	Size	Spacing
time (Time Axis, UTC)	1	(just one value)

gridZ (count)	40	1.0 (even)

gridY (count)	898	1.0 (even)

gridX (count)	398	1.0 (even)

File type: (more info)

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(Please be patient. It may take a while to get the data.)

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.1676114e+9, 1.1676114e+9;
    String axis "T";
    String calendar "proleptic_gregorian";
    String coverage_content_type "modelResult";
    String ioos_category "Time";
    String long_name "Time Axis";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  gridZ {
    Int16 actual_range 0, 39;
    String comment "gridZ values are grid indices of the model depth levels.";
    String coverage_content_type "modelResult";
    String ioos_category "location";
    String long_name "Grid Z";
    String standard_name "z";
    String units "count";
  }
  gridY {
    Int16 actual_range 0, 897;
    String comment "gridY values are grid indices in the model y-direction; geo-location data for the SalishSeaCast NEMO model grid is available in the ubcSSnBathymetryV21-08 dataset.";
    String coverage_content_type "modelResult";
    String ioos_category "location";
    String long_name "Grid Y";
    String standard_name "y";
    String units "count";
  }
  gridX {
    Int16 actual_range 0, 397;
    String comment "gridX values are grid indices in the model x-direction; geo-location data for the SalishSeaCast NEMO model grid is available in the ubcSSnBathymetryV21-08 dataset.";
    String coverage_content_type "modelResult";
    String ioos_category "location";
    String long_name "Grid X";
    String standard_name "x";
    String units "count";
  }
  tmask {
    String coverage_content_type "modelResult";
    String flag_meanings "land, water";
    String flag_values "0, 1";
    String ioos_category "grid_parameter";
    String long_name "Land Mask for T-grid and W-grid";
    String standard_name "tmask";
  }
  umask {
    String coverage_content_type "modelResult";
    String flag_meanings "land, water";
    String flag_values "0, 1";
    String ioos_category "grid_parameter";
    String long_name "Land Mask for U-grid";
    String standard_name "umask";
  }
  vmask {
    String coverage_content_type "modelResult";
    String flag_meanings "land, water";
    String flag_values "0, 1";
    String ioos_category "grid_parameter";
    String long_name "Land Mask for V-grid";
    String standard_name "vmask";
  }
  fmask {
    String coverage_content_type "modelResult";
    String flag_meanings "land, water";
    String flag_values "0, 1";
    String ioos_category "grid_parameter";
    String long_name "Land Mask for vorticity-grid";
    String standard_name "fmask";
  }
  e3t_0 {
    Float64 _FillValue NaN;
    String coverage_content_type "modelResult";
    String ioos_category "grid_parameter";
    String long_name "Grid Spacing on T-grid in w Direction";
    String standard_name "e3t_0";
    String units "m";
  }
  e3u_0 {
    Float64 _FillValue NaN;
    String coverage_content_type "modelResult";
    String ioos_category "grid_parameter";
    String long_name "Grid Spacing on U-grid in w Direction";
    String standard_name "e3u_0";
    String units "m";
  }
  e3v_0 {
    Float64 _FillValue NaN;
    String coverage_content_type "modelResult";
    String ioos_category "grid_parameter";
    String long_name "Grid Spacing on V-grid in w Direction";
    String standard_name "e3v_0";
    String units "m";
  }
  e3w_0 {
    Float64 _FillValue NaN;
    String coverage_content_type "modelResult";
    String ioos_category "grid_parameter";
    String long_name "Grid Spacing on W-grid in w Direction";
    String standard_name "e3w_0";
    String units "m";
  }
  gdept_0 {
    Float32 _FillValue NaN;
    String coverage_content_type "modelResult";
    String ioos_category "grid_parameter";
    String long_name "Depth of T-grid Points";
    String positive "down";
    String standard_name "gdept_0";
    String units "m";
  }
  gdepu {
    Float32 _FillValue NaN;
    String coverage_content_type "modelResult";
    String ioos_category "grid_parameter";
    String long_name "Depth of U-grid Points";
    String positive "down";
    String standard_name "gdepu";
    String units "m";
  }
  gdepv {
    Float32 _FillValue NaN;
    String coverage_content_type "modelResult";
    String ioos_category "grid_parameter";
    String long_name "Depth of V-grid Points";
    String positive "down";
    String standard_name "gdepv";
    String units "m";
  }
  gdepw_0 {
    Float32 _FillValue NaN;
    String coverage_content_type "modelResult";
    String ioos_category "grid_parameter";
    String long_name "Depth of W-grid Points";
    String positive "down";
    String standard_name "gdepw_0";
    String units "m";
  }
  NC_GLOBAL {
    String acknowledgement 
"Canadian Hydrographic Service (CHS),
National Ocean and Atmospheric Administration (NOAA),
United States Geological Service (USGS),
Digital Research Alliance of Canada

This product has been produced by the University of British Columbia based in part on
Canadian Hydrographic Service charts and/or data, pursuant to CHS Direct User Licence
No. 2016-0504-1260-U.

The incorporation of data sourced from CHS in this product shall not be construed as
constituting an endorsement of CHS of this product.

This product does not meet the requirements of Charts and Nautical Publications Regulations,
1995 under the Canadian Shipping Act, 2001.
Official charts and publications, corrected and up-to-data,
must be used to meet the requirements of those regulations.";
    String cdm_data_type "Grid";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creator_email "sallen@eoas.ubc.ca";
    String creator_name "SalishSeaCast Project Contributors";
    String creator_url "https://salishsea-meopar-docs.readthedocs.io/";
    String drawLandMask "over";
    String file_name "grid/mesh_mask202108.nc";
    String history 
"[2021-08-07 17:25] ncks -4 -L4 -O mesh_mask.nc mesh_mask202108.nc
[2023-12-19 13:36] Added metadata to variables in preparation for creation of ERDDAP datasets.
2024-12-22T03:11:31Z (local files)
2024-12-22T03:11:31Z https://salishsea.eos.ubc.ca/erddap/griddap/ubcSSn3DMeshMaskV21-08.das";
    String infoUrl "https://salishsea.eos.ubc.ca/";
    String institution "UBC EOAS";
    String institution_fullname "Dept of Earth, Ocean & Atmospheric Sciences, University of British Columbia";
    String keywords "bathymetry, coordinates, depth, e3t_0, e3u_0, e3v_0, e3w_0, f-grid, fmask, gdept_0, gdepu, gdepv, gdepw_0, grid, grid parameters, mesh mask, NEMO, ocean, Salish Sea, sea, spacing, t-grid, tmask, u-grid, umask, v-grid, vmask, vorticity-grid, w-grid";
    String license 
"The SalishSeaCast NEMO model results are copyright
by the SalishSeaCast Project Contributors and The University of British Columbia.

They are licensed under the Apache License, Version 2.0. https://www.apache.org/licenses/LICENSE-2.0";
    String project "SalishSeaCast NEMO Model";
    String references "https://github.com/SalishSeaCast/grid/blob/main/mesh_mask202108.nc";
    String source "NEMO-3.6 SalishSeaCast configuration";
    String sourceUrl "(local files)";
    String standard_name_vocabulary "CF Standard Name Table v29";
    String summary 
"SalishSeaCast NEMO Model Grid, 3D Mesh Mask, v21-08

NEMO grid variable value for the SalishSeaCast NEMO model Arakawa-C grid.
The values are those calculated by NEMO from the input coordinates and bathymetry files.
The variable names are those used by NEMO-3.6,
see the NEMO-3.6 book (http://www.nemo-ocean.eu/Media/Files/NEMO_book_V3_6.pdf) for details,
or the long_name attributes of the variables for succinct descriptions of the variables.
The model grid includes the Juan de Fuca Strait, the Strait of Georgia, Puget Sound,
and Johnstone Strait on the coasts of Washington State and British Columbia.

v1: e3t_0, e3u_0, e3v_0, e3w_0, gdept_0, gdepu, gdepv, gdepw_0, tmask, umask, vmask, fmask variables
v16-07: e3t, e3u, e3v, e3w, gdept, gdepu, gdepv, gdepw, tmask, umask, vmask, fmask variables

v17-02: tmask, umask, vmask, fmask, e3t_0, e3u_0, e3v_0, e3w_0, gdept_0, gdepu, gdepv, gdepw_0 variables
v21-08: tmask, umask, vmask, fmask, e3t_0, e3u_0, e3v_0, e3w_0, gdept_0, gdepu, gdepv, gdepw_0 variables";
    String time_coverage_end "2007-01-01T00:30:00Z";
    String time_coverage_start "2007-01-01T00:30:00Z";
    String TimeStamp "07/08/2021 17:25:49 -0700";
    String title "SalishSeaCast NEMO Model Grid, 3D Mesh Mask, v21-08";
  }
}

Using griddap to Request Data and Graphs from Gridded Datasets

griddap lets you request a data subset, graph, or map from a gridded dataset (for example, sea surface temperature data from a satellite), via a specially formed URL. griddap uses the OPeNDAP (external link)

Data Access Protocol (DAP) (external link)

and its projection constraints (external link)

The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.

(easy) You can get data by using the dataset's Data Access Form. It makes the URL for you.
(easy) You can make a graph or map by using the dataset's Make A Graph form. It makes the URL for you.
(not hard) You can bypass the forms and get the data or make a graph or map by generating the URL by hand or with a computer program or script.

griddap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/griddap/jplMURSST41.htmlTable?analysed_sst[(2002-06-01T09:00:00Z)][(-89.99):1000:(89.99)][(-179.99):1000:(180.0)]
Thus, the query is often a data variable name (e.g., analysed_sst), followed by [(start):stride:(stop)] (or a shorter variation of that) for each of the variable's dimensions (for example, [time][latitude][longitude]).

For details, see the griddap Documentation.

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