Data Access Form

Dataset Title:	Modeled Hydrographic (Benthic) \| NOAA/NEFSC \| Biass-corrected ROMS and GLORYS \| Bottom Temperature \| Northeast U.S. Shelf 0.083° \| Daily \| 1959-2020
Institution:	NOAA \| NMFS \| NEFSC (Dataset ID: duPontavice_bottom_temp)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Files \| Make a graph

To work correctly, this web page requires that JavaScript be enabled in your browser. Please:
1) Enable JavaScript in your browser:
      • Chrome: "Settings : Advanced : Privacy and security : Site Settings : JavaScript"
      • Firefox: (it should be always on!)"
      • Opera: "Settings : Websites : JavaScript"
      • Safari: "Safari : Preferences : Security : Enable JavaScript"
2) Reload this web page.

Dimensions	Size	Spacing
time (time of measurement, UTC)	22646	1 day (even)

latitude (degrees_north)	103	0.08333333 (even)

longitude (degrees_east)	123	0.08333333 (even)

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

sea_water_temperature_at_sea_floor (°C)

File type: (more information)

(Documentation / Bypass this form)

(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 -3.470688e+8, 1.6094592e+9;
    String axis "T";
    String comment "nominal time from the start of the time period";
    String coverage_content_type "coordinate";
    String ioos_category "Time";
    String long_name "time of measurement";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String unit "1950-1-1";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 35.9166666666667, 44.4166666666667;
    String axis "Y";
    String comment "Latitude values are at the center of the grid cells";
    String coordsys "geographic";
    String coverage_content_type "coordinate";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String unit "degrees_north";
    String units "degrees_north";
    Float64 valid_max 90.0;
    Float64 valid_min -90.0;
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -75.9166666666667, -65.75;
    String axis "X";
    String comment "Longitude values are at the center of the grid cells";
    String coordsys "geographic";
    String coverage_content_type "coordinate";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String unit "degrees_east";
    String units "degrees_east";
    Float64 valid_max 180.0;
    Float64 valid_min -180.0;
  }
  sea_water_temperature_at_sea_floor {
    Float32 _FillValue -99999.0;
    Float64 colorBarMaximum 40.0;
    Float64 colorBarMinimum -10.0;
    String ioos_category "Temperature";
    String long_name "Sea water temperature at sea floor";
    String standard_name "sea_water_temperature_at_sea_floor";
    String unit "°C";
    String units "°C";
    Float32 valid_max 28.84155;
    Float32 valid_min 2.10807;
  }
  NC_GLOBAL {
    String acknowledgement "DOC NOAA Fisheries Northeast Fisheries Science Center Ecosystem Assessment and Dynamics Branch";
    String cdm_data_type "Grid";
    String comment "The ocean product for the year 2020 was updated with new data from an ocean product released in November 2022. In 2020, GLO12v3 (previously called PSY4V3R1) was replaced with GLORYS12V1";
    String contributor_name "GLORYS12V1=Copernicus Marine Service ; ROMS-NWA=Rutgers University";
    String contributor_role "Copernicus Marine Service=Data provider; Rutgers University=Model development";
    String Conventions "CF-1.10, ACDD-1.3, COARDS";
    String creator_email "hubert.dupontavice@gmail.com ; vincent.saba@noaa.gov ; zhuomin.chen@uconn.edu";
    String creator_institution "DOC NOAA Fisheries Northeast Fisheries Science Center";
    String creator_name "DOC NOAA Fisheries Northeast Fisheries Science Center Ecosystem Assessment and Dynamics Branch";
    String creator_type "institution";
    String creator_url "https://www.nefsc.noaa.gov/";
    String date_created "2023-01-09T10:12:00Z";
    String date_issued "2023-01-09T10:12:00Z";
    String date_metadata_modified "2023-01-09T10:12:00Z";
    String date_modified "2023-01-09T10:12:00Z";
    Float64 Easternmost_Easting -65.75;
    String geospatial_bounds "(-75.91667, 35.91667, -65.75, 44.41667)";
    String geospatial_bounds_crs "WGS84";
    String geospatial_bounds_vertical_crs "EPSG:4326";
    Float64 geospatial_lat_max 44.4166666666667;
    Float64 geospatial_lat_min 35.9166666666667;
    Float64 geospatial_lat_resolution 0.08333333333333333;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -65.75;
    Float64 geospatial_lon_min -75.9166666666667;
    Float64 geospatial_lon_resolution 0.0833333333333336;
    String geospatial_lon_units "degrees_east";
    String group "Hubert du Pontavice, Vincent Saba and Zhuomin Chen";
    String history 
"GLORYS12V1 and ROM-NWA
2025-07-05T04:05:20Z (local files)
2025-07-05T04:05:20Z http://comet.nefsc.noaa.gov/erddap/griddap/duPontavice_bottom_temp.das";
    String infoUrl "https://doi.org/10.1016/j.pocean.2022.102948";
    String institution "NOAA | NMFS | NEFSC";
    String keywords "12\\u00b0, bottom, center, combination, commerce, continental, daily, data, day, department, doc, fisheries, floor, glorys, latitude, longitude, model, modeling, models, noaa, northeast, observations, obtained, ocean, product, reanalysis, regional, roms, science, sea, sea_water_temperature_at_sea_floor, seawater, shelf, system, temperature, time, u.s., US, water";
    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, NEFSC, NOAA, nor the United States Government, nor any of their employees or contractors, makes any warranty, expressed or implied, including warranties of marketability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness of this information.";
    String metadata_link "https://doi.org/10.1016/j.pocean.2022.102948";
    Float64 Northernmost_Northing 44.4166666666667;
    String original_file_name "bt_temp_1959_2022_v_soe.Rda";
    String processing_level "L4P";
    String product_version "2023.0";
    String program "No specific program";
    String publisher_email "hubert.dupontavice@gmail.com ; vincent.saba@noaa.gov";
    String publisher_institution "DOC NOAA Fisheries Northeast Fisheries Science Center";
    String publisher_name "DOC NOAA Fisheries Northeast Fisheries Science Center Ecosystem Assessment and Dynamics Branch";
    String publisher_type "institution";
    String publisher_url "https://www.nefsc.noaa.gov/";
    String references "du Pontavice et al., 2023 - https://doi.org/10.1016/j.pocean.2022.102948";
    String source "GLORYS12V1 and ROM-NWA";
    String source_data_doi "GLORYS12V1= https://doi.org/10.48670/moi-00021";
    String source_data_url "GLORYS12V1= https://data.marine.copernicus.eu/product/GLOBAL_MULTIYEAR_PHY_001_030/description";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 35.9166666666667;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "Bottom temperature product for the northeast U.S continental shelf obtained from a combination of observations and models, daily, 1/12°, 1959 - 2020. Two ocean products are combined, a regional ocean model (Regional Ocean Modeling System (ROMS)-NWA) and a global ocean data assimilated models (GLORYS12v1) to build a high-resolution, long-term bottom temperature product for the northeast U.S. continental shelf between 1959 and 2020. ROMS-NWA is bias-corrected using monthly decadal climatologies from ocean observations. Model skill was assessed using a large number of in situ observations. This performance assessment is presented in du Pontavice et al. 2023";
    String time_coverage_duration "P1Y0M0DT0H0M0S";
    String time_coverage_end "2021-01-01T00:00:00Z";
    String time_coverage_resolution "24:00:00";
    String time_coverage_start "1959-01-02T00:00:00Z";
    String time_period "daily";
    String title "Modeled Hydrographic (Benthic) | NOAA/NEFSC | Biass-corrected ROMS and GLORYS | Bottom Temperature | Northeast U.S. Shelf 0.083° | Daily | 1959-2020";
    Float64 Westernmost_Easting -75.9166666666667;
  }
}

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.