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Dataset Title:	Regional NCOM AMSEAS 2D (Latest)
Institution:	Naval Oceanographic Office via NOAA NCEI   (Dataset ID: NCOM_amseas_latest2d)
Information:	Summary AMSEAS data from December 17, 2020 to present (includes 3 day forecast) cdm_data_type = Grid VARIABLES (all of which use the dimensions [time][latitude][longitude]): surf_el (Water Surface Elevation, meter) surf_atm_press (Surface Atmospheric Pressure, millibar) surf_temp_flux (Surface Temperature Flux, degC meter/second) surf_salt_flux (Surface Salinity Flux, psu meter/second) surf_solar_flux (Surface Shortwave Flux, degC meter/second) surf_roughness (Surface Roughness, m) surf_wnd_stress_gridx (Eastward Surface Wind Stress, pascal) surf_wnd_stress_gridy (Northward Surface Wind Stress, pascal) ')" onmouseout="UnTip()" > | License The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, ERD, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information.')" onmouseout="UnTip()" > | Metadata | Background | Make a graph

Dimensions	Start	Stride	Stop	Size	Spacing For your information: this is the average spacing between values of a dimension (in the units of the dimension) and an indication of whether the values are perfectly evenly spaced or not. A slightly odd, uneven spacing often indicates that one or a few files are missing or bad in an otherwise perfectly evenly spaced dataset.')" onmouseout="UnTip()" >
time (UTC)   Float64 time[12754] {     String _CoordinateAxisType "Time";     Float64 actual_range 1.6079904e+9, 1.746144e+9;     String axis "T";     String calendar "proleptic_gregorian";     String ioos_category "Time";     String long_name "Forecast time for ForecastModelRunCollection";     Float64 missing_value NaN;     String standard_name "time";     String time_origin "01-JAN-1970 00:00:00";     String units "seconds since 1970-01-01T00:00:00Z";   } ')" onmouseout="UnTip()" >				12754	3h 0m 33s (uneven)
latitude (degrees_north)   Float64 latitude[814] {     String _CoordinateAxisType "Lat";     Float64 actual_range 5.0, 32.0972900390625;     String axis "Y";     String ioos_category "Location";     String long_name "Latitude";     Int32 NAVO_code 1;     String standard_name "latitude";     String units "degrees_north";   } ')" onmouseout="UnTip()" >				814	0.03333 (uneven)
longitude (degrees_east)   Float64 longitude[1294] {     String _CoordinateAxisType "Lon";     Float64 actual_range 262.0, 305.095703125;     String axis "X";     String ioos_category "Location";     String long_name "Longitude";     Int32 NAVO_code 2;     String standard_name "longitude";     String units "degrees_east";   } ')" onmouseout="UnTip()" >				1294	0.03333001 (uneven)

Grid Variables (which always also download all of the dimension variables)

surf_el (Water Surface Elevation, meter)   Float32 surf_el[time][latitude][longitude] {     String _CoordinateAxisType "Height";     String _CoordinateZisPositive "up";     Float32 actual_range -1.7781729, 1.3727822;     String coordinates "time_run time lat lon";     String ioos_category "Sea Level";     String long_name "Water Surface Elevation";     Int32 NAVO_code 32;     String positive "up";     String units "meter";   } ')" onmouseout="UnTip()" >

surf_atm_press (Surface Atmospheric Pressure, millibar)   Float32 surf_atm_press[time][latitude][longitude] {     String _CoordinateAxisType "Pressure";     Float32 actual_range 995.66956, 1011.75806;     String coordinates "time_run time lat lon";     String ioos_category "Pressure";     String long_name "Surface Atmospheric Pressure";     Int32 NAVO_code 62;     String units "millibar";   } ')" onmouseout="UnTip()" >

surf_temp_flux (Surface Temperature Flux, degC meter/second)   Float32 surf_temp_flux[time][latitude][longitude] {     Float32 actual_range -1.07806256e-4, -2.6349865e-6;     String coordinates "time_run time lat lon";     String ioos_category "Heat Flux";     String long_name "Surface Temperature Flux";     String positive "down";     String units "degC meter/second";   } ')" onmouseout="UnTip()" >

surf_salt_flux (Surface Salinity Flux, psu meter/second)   Float32 surf_salt_flux[time][latitude][longitude] {     Float32 actual_range -1.0294319e-4, 4.4594995e-6;     String coordinates "time_run time lat lon";     String ioos_category "Salinity";     String long_name "Surface Salinity Flux";     String positive "down";     String units "psu meter/second";   } ')" onmouseout="UnTip()" >

surf_solar_flux (Surface Shortwave Flux, degC meter/second)   Float32 surf_solar_flux[time][latitude][longitude] {     Float32 actual_range 0.0, 0.0;     String coordinates "time_run time lat lon";     String ioos_category "Heat Flux";     String long_name "Surface Shortwave Flux";     String positive "down";     String units "degC meter/second";   } ')" onmouseout="UnTip()" >

surf_roughness (Surface Roughness, m)   Float32 surf_roughness[time][latitude][longitude] {     Float32 actual_range 0.0, 0.0;     String coordinates "time_run time lat lon";     String ioos_category "Surface Waves";     String long_name "Surface Roughness";     String units "m";   } ')" onmouseout="UnTip()" >

surf_wnd_stress_gridx (pascal)   Float32 surf_wnd_stress_gridx[time][latitude][longitude] {     Float32 actual_range -0.16288696, 0.03488604;     String coordinates "time_run time lat lon";     String ioos_category "Wind";     String long_name "Eastward Surface Wind Stress";     Int32 NAVO_code 58;     String units "pascal";   } ')" onmouseout="UnTip()" >

surf_wnd_stress_gridy (pascal)   Float32 surf_wnd_stress_gridy[time][latitude][longitude] {     Float32 actual_range -0.13277845, 0.068568215;     String coordinates "time_run time lat lon";     String ioos_category "Wind";     String long_name "Northward Surface Wind Stress";     Int32 NAVO_code 59;     String units "pascal";   } ')" onmouseout="UnTip()" >

File type: (more information) .asc - View OPeNDAP-style ISO-8859-1 comma-separated text. .csv - Download a ISO-8859-1 comma-separated text table (line 1: names; line 2: units; ISO 8601 times). .csvp - Download a ISO-8859-1 .csv file with line 1: name (units). Times are ISO 8601 strings. .csv0 - Download a ISO-8859-1 .csv file without column names or units. Times are ISO 8601 strings. .das - View the dataset's metadata via an ISO-8859-1 OPeNDAP Dataset Attribute Structure (DAS). .dds - View the dataset's structure via an ISO-8859-1 OPeNDAP Dataset Descriptor Structure (DDS). .dods - OPeNDAP clients use this to download the data in the DODS binary format. .esriAscii - Download an ISO-8859-1 ESRI ASCII file (latitude longitude data only; longitude must be all below or all above 180). .fgdc - View the dataset's UTF-8 FGDC .xml metadata. .graph - View a Make A Graph web page. .help - View a web page with a description of griddap. .html - View an OPeNDAP-style HTML Data Access Form. .htmlTable - View a UTF-8 .html web page with the data in a table. Times are ISO 8601 strings. .iso19115 - View the dataset's ISO 19115-2/19139 UTF-8 .xml metadata. .itx - Download an ISO-8859-1 Igor Text File. Each axis variable and each data variable becomes a wave. .json - View a table-like UTF-8 JSON file (missing value = 'null'; times are ISO 8601 strings). .jsonlCSV1 - View a UTF-8 JSON Lines CSV file with column names on line 1 (mv = 'null'; times are ISO 8601 strings). .jsonlCSV - View a UTF-8 JSON Lines CSV file without column names (mv = 'null'; times are ISO 8601 strings). .jsonlKVP - View a UTF-8 JSON Lines file with Key:Value pairs (missing value = 'null'; times are ISO 8601 strings). .mat - Download a MATLAB binary file. .nc - Download a NetCDF-3 binary file with COARDS/CF/ACDD metadata. .ncHeader - View the UTF-8 header (the metadata) for the NetCDF-3 .nc file. .ncml - View the dataset's structure and metadata as a UTF-8 NCML .xml file. .nccsv - Download a NetCDF-3-like 7-bit ASCII NCCSV .csv file with COARDS/CF/ACDD metadata. .nccsvMetadata - View the dataset's metadata as the top half of a 7-bit ASCII NCCSV .csv file. .ncoJson - Download a UTF-8 NCO lvl=2 JSON file with COARDS/CF/ACDD metadata. .odvTxt - Download time,latitude,longitude,otherVariables as an ODV Generic Spreadsheet File (.txt). .timeGaps - View a UTF-8 list of gaps in the time values which are larger than the median gap. .tsv - Download a ISO-8859-1 tab-separated text table (line 1: names; line 2: units; ISO 8601 times). .tsvp - Download a ISO-8859-1 .tsv file with line 1: name (units). Times are ISO 8601 strings. .tsv0 - Download a ISO-8859-1 .tsv file without column names or units. Times are ISO 8601 strings. .wav - Download a .wav audio file. All columns must be numeric and of the same type. .xhtml - View a UTF-8 XHTML (XML) file with the data in a table. Times are ISO 8601 strings. .geotif - View a grayscale GeoTIFF .tif file (for latitude longitude data; longitude must be all below or all above 180). .kml - View a Google Earth .kml file (for latitude, longitude data only). .smallPdf - View a small .pdf image file with a graph or map. .pdf - View a standard, medium-sized .pdf image file with a graph or map. .largePdf - View a large .pdf image file with a graph or map. .smallPng - View a small .png image file with a graph or map. .png - View a standard, medium-sized .png image file with a graph or map. .largePng - View a large .png image file with a graph or map. .transparentPng - View a .png image file (just the data, without axes, landmask, or legend).

(Documentation / Bypass this form) Optional: Bypass This Form
griddap lets you request data by sending a specially formed URL to the server. The URL identifies a dataset, the desired file type for the response, and the subset of data that you want to receive. This Data Access Form simplifies this task: when you click on the Submit button below, the URL is generated and sent to the server. If you click on Just generate the URL, you can see the URL that the form generates, without sending the URL to the server.

If you learn how to form the URLs, you won\'t have to use this form to get data.
You can write a computer program or script that automatically generates URLs, sends them to ERDDAP, and gets the data. For more information on forming the URLs, click on the Bypass this form link to see the griddap documentation.')" onmouseout="UnTip()" >
 
Submit (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 1.6079904e+9, 1.746144e+9;
    String axis "T";
    String calendar "proleptic_gregorian";
    String ioos_category "Time";
    String long_name "Forecast time for ForecastModelRunCollection";
    Float64 missing_value NaN;
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 5.0, 32.0972900390625;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    Int32 NAVO_code 1;
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range 262.0, 305.095703125;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    Int32 NAVO_code 2;
    String standard_name "longitude";
    String units "degrees_east";
  }
  surf_el {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "up";
    Float32 actual_range -1.7781729, 1.3727822;
    String coordinates "time_run time lat lon";
    String ioos_category "Sea Level";
    String long_name "Water Surface Elevation";
    Int32 NAVO_code 32;
    String positive "up";
    String units "meter";
  }
  surf_atm_press {
    String _CoordinateAxisType "Pressure";
    Float32 actual_range 995.66956, 1011.75806;
    String coordinates "time_run time lat lon";
    String ioos_category "Pressure";
    String long_name "Surface Atmospheric Pressure";
    Int32 NAVO_code 62;
    String units "millibar";
  }
  surf_temp_flux {
    Float32 actual_range -1.07806256e-4, -2.6349865e-6;
    String coordinates "time_run time lat lon";
    String ioos_category "Heat Flux";
    String long_name "Surface Temperature Flux";
    String positive "down";
    String units "degC meter/second";
  }
  surf_salt_flux {
    Float32 actual_range -1.0294319e-4, 4.4594995e-6;
    String coordinates "time_run time lat lon";
    String ioos_category "Salinity";
    String long_name "Surface Salinity Flux";
    String positive "down";
    String units "psu meter/second";
  }
  surf_solar_flux {
    Float32 actual_range 0.0, 0.0;
    String coordinates "time_run time lat lon";
    String ioos_category "Heat Flux";
    String long_name "Surface Shortwave Flux";
    String positive "down";
    String units "degC meter/second";
  }
  surf_roughness {
    Float32 actual_range 0.0, 0.0;
    String coordinates "time_run time lat lon";
    String ioos_category "Surface Waves";
    String long_name "Surface Roughness";
    String units "m";
  }
  surf_wnd_stress_gridx {
    Float32 actual_range -0.16288696, 0.03488604;
    String coordinates "time_run time lat lon";
    String ioos_category "Wind";
    String long_name "Eastward Surface Wind Stress";
    Int32 NAVO_code 58;
    String units "pascal";
  }
  surf_wnd_stress_gridy {
    Float32 actual_range -0.13277845, 0.068568215;
    String coordinates "time_run time lat lon";
    String ioos_category "Wind";
    String long_name "Northward Surface Wind Stress";
    Int32 NAVO_code 59;
    String units "pascal";
  }
  NC_GLOBAL {
    String _CoordSysBuilder "ucar.nc2.dataset.conv.CF1Convention";
    String cdm_data_type "Grid";
    String classification_authority "not applicable";
    String contact "not applicable";
    String Conventions "Global NCOM";
    String creator_name "kelly.r.wood@navy.mil; jeffery.rayburn@navy.mil";
    String distribution_statement "Approved for Public Release; distribution unlimited.";
    String downgrade_date "not applicable";
    Float64 Easternmost_Easting 305.095703125;
    String generating_model "COAMPS amseas_u project";
    Float64 geospatial_lat_max 32.0972900390625;
    Float64 geospatial_lat_min 5.0;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 305.095703125;
    Float64 geospatial_lon_min 262.0;
    String geospatial_lon_units "degrees_east";
    String history 
"created: 2025-04-27 08:12:44 -0000 ;
FMRC Best Dataset
2025-04-29T23:18:21Z http://www.ncei.noaa.gov/thredds-coastal/dodsC/ncom_amseas_agg/AmSeas_Dec_17_2020_to_Current_best.ncd
2025-04-29T23:18:21Z http://www.ncei.noaa.gov/erddap/griddap/NCOM_amseas_latest2d.das";
    String infoUrl "http://www.ncei.noaa.gov/thredds-coastal/catalog/ncom_amseas_agg/catalog.html?dataset=ncom_amseas_agg/AmSeas_Dec_17_2020_to_Current_best.ncd";
    String input_data_source "not applicable";
    String institution "Naval Oceanographic Office via NOAA NCEI";
    String license 
"The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.";
    String location "Proto fmrc:AmSeas_Dec_17_2020_to_Current";
    String model_type "COAMPS Version v2021.5";
    Float64 Northernmost_Northing 32.0972900390625;
    String operational_status "not applicable";
    String publisher_name "OceanNOMADS@noaa.gov";
    String source "NCOM Version 4.6.8";
    String sourceUrl "http://www.ncei.noaa.gov/thredds-coastal/dodsC/ncom_amseas_agg/AmSeas_Dec_17_2020_to_Current_best.ncd";
    Float64 Southernmost_Northing 5.0;
    String standard_name_vocabulary "CF-1.0";
    String summary "AMSEAS data from December 17, 2020 to present (includes 3 day forecast)";
    String time_coverage_end "2025-05-02T00:00:00Z";
    String time_coverage_start "2020-12-15T00:00:00Z";
    String time_origin "2025-04-27 00:00:00 UTC";
    String title "Regional NCOM AMSEAS 2D (Latest)";
    Float64 Westernmost_Easting 262.0;
  }
}

Using griddap to Request Data and Graphs from Gridded Datasets

OPeNDAP

Data Access Protocol (DAP)

projection constraints

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
http://coastwatch.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
http://coastwatch.pfeg.noaa.gov/erddap/griddap/erdBAssta5day.htmlTable?sst[(2007-10-21T00:00:00)][0][(-75):100:(75)][(180):100:(360)]
Thus, the query is often a data variable name (e.g., sst), followed by [(start):stride:(stop)] (or a shorter variation of that) for each of the variable's dimensions (for example, [time][altitude][latitude][longitude]).

For details, see the griddap Documentation.