ERDDAP > griddap > Data Access Form

Dataset Title:	NOAA/NCEI 1/4 Degree Daily Optimum Interpolation SST (OISST) Analysis, Version 2.1, Final [time], 2020-present
Institution:	NOAA/National Centers for Environmental Information   (Dataset ID: noaa_ncei_e7fc_68cb_0584)
Information:	Summary | License | Metadata | Background | Make a graph

 

Dimensions	Start	Stride	Stop	Size	Spacing
time (UTC)				1515	1 day (even)

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

time_run (run times for coordinate = time, seconds since 1970-01-01T00:00:00Z)

time_offset (seconds since 1970-01-01T00:00:00Z)

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).

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.5828912e+9, 1.7137008e+9;
    String axis "T";
    String calendar "proleptic_gregorian";
    String ioos_category "Time";
    String long_name "Forecast time for ForecastModelRunCollection";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  time_run {
    String _CoordinateAxisType "RunTime";
    String calendar "proleptic_gregorian";
    String ioos_category "Time";
    String long_name "run times for coordinate = time";
    String standard_name "forecast_reference_time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  time_offset {
    String calendar "proleptic_gregorian";
    String ioos_category "Time";
    String long_name "offset hour from start of run for coordinate = time";
    String standard_name "forecast_period";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  NC_GLOBAL {
    String _CoordSysBuilder "ucar.nc2.dataset.conv.CF1Convention";
    String cdm_data_type "Grid";
    String comment "Data was converted from NetCDF-3 to NetCDF-4 format with metadata updates in November 2017.";
    String Conventions "CF-1.6, ACDD-1.3, COARDS";
    String creator_email "oisst-help@noaa.gov";
    String creator_name "NOAA/National Centers for Environmental Information";
    String creator_type "group";
    String creator_url "https://www.ncei.noaa.gov/";
    String date_created "2024-05-05T09:11:00Z";
    String date_modified "2024-05-05T09:11:00Z";
    String history 
"Final file created using preliminary as first guess, and 3 days of AVHRR data. Preliminary uses only 1 day of AVHRR data. ;
FMRC Best Dataset
2024-05-07T22:58:04Z https://www.ncei.noaa.gov/thredds/dodsC/ncFC/fc-oisst-daily-avhrr-only-dly/OISST_Daily_AVHRR-only_Feature_Collection_best.ncd
2024-05-07T22:58:04Z http://upwell.pfeg.noaa.gov/erddap/griddap/noaa_ncei_e7fc_68cb_0584.das";
    String id "ncFC/fc-oisst-daily-avhrr-only-dly/OISST_Daily_AVHRR-only_Feature_Collection_best.ncd";
    String infoUrl "https://doi.org/10.25921/RE9P-PT57";
    String institution "NOAA/National Centers for Environmental Information";
    String instrument "Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Imaging Spectrometers/Radiometers > AVHRR > Advanced Very High Resolution Radiometer";
    String instrument_vocabulary "Global Change Master Directory (GCMD) Instrument Keywords";
    String keywords "analysis, centers, coordinate, daily, data, day, degree, earth, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, environmental, final, forecast, forecast_period, forecast_reference_time, hour, information, interpolation, national, ncei, nesdis, noaa, ocean, oceans, offset, oisst, optimum, period, reference, run, science, sea, sst, start, surface, temperature, time, time_offset, time_run, times, version";
    String keywords_vocabulary "GCMD Science Keywords";
    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:OISST_Daily_AVHRR-only_Feature_Collection";
    String metadata_link "https://doi.org/10.25921/RE9P-PT57";
    String naming_authority "gov.noaa.ncei";
    String platform "Ships, buoys, Argo floats, MetOp-A, MetOp-B";
    String platform_vocabulary "Global Change Master Directory (GCMD) Platform Keywords";
    String processing_level "NOAA Level 4";
    String product_version "Version v02r01";
    String references "Reynolds, et al.(2007) Daily High-Resolution-Blended Analyses for Sea Surface Temperature (available at https://doi.org/10.1175/2007JCLI1824.1). Banzon, et al.(2016) A long-term record of blended satellite and in situ sea-surface temperature for climate monitoring, modeling and environmental studies (available at https://doi.org/10.5194/essd-8-165-2016). Huang et al. (2020) Improvements of the Daily Optimum Interpolation Sea Surface Temperature (DOISST) Version v02r01, submitted.Climatology is based on 1971-2000 OI.v2 SST. Satellite data: Pathfinder AVHRR SST, Navy AVHRR SST, and NOAA ACSPO SST. Ice data: NCEP Ice and GSFC Ice.";
    String sensor "Thermometer, AVHRR";
    String source "ICOADS, NCEP_GTS, GSFC_ICE, NCEP_ICE, Pathfinder_AVHRR, Navy_AVHRR, NOAA_ACSP";
    String sourceUrl "https://www.ncei.noaa.gov/thredds/dodsC/ncFC/fc-oisst-daily-avhrr-only-dly/OISST_Daily_AVHRR-only_Feature_Collection_best.ncd";
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "NOAA/National Centers for Environmental Information (NCEI) 1/4 Degree Daily Optimum Interpolation Sea Surface Temperature (OISST) Analysis, Version 2.1 - Final. Best time series, taking the data from the most recent run available. Aggregation of OISST files, not including preliminary files";
    String testOutOfDate "now-33days";
    String time_coverage_end "2024-04-21T12:00:00Z";
    String time_coverage_start "2020-02-28T12:00:00Z";
    String title "NOAA/NCEI 1/4 Degree Daily Optimum Interpolation SST (OISST) Analysis, Version 2.1, Final [time], 2020-present";
  }
}

 

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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 Data Access Protocol (DAP) and its 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
https://upwell.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://upwell.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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