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Dataset Title:  SST, POES AVHRR, LAC, West US, Day and Night (8 Day Composite) Subscribe RSS
Institution:  NOAA CoastWatch WCN   (Dataset ID: ERDATSSTA8DAY)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (Centered Time, UTC) ?      2405    1 day 0h 14m 23s (uneven)
  < slider >
 altitude (m) ?      1    (just one value)
  < slider >
 latitude (degrees_north) ?      2321    0.0125 (even)
  < slider >
 longitude (degrees_east) ?      3201    0.0125 (even)
  < slider >
 
Grid Variables (which always also download all of the dimension variables)
 sst (Sea Surface Temperature, degree_Celsius) ?

File type: (more info)

(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 1.2936672e+9, 1.5034464e+9;
    String axis "T";
    String calendar "gregorian";
    Int32 fraction_digits 0;
    String ioos_category "Time";
    String long_name "Centered Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  altitude {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "up";
    Float64 actual_range 0.0, 0.0;
    String axis "Z";
    Int32 fraction_digits 0;
    String ioos_category "Location";
    String long_name "Altitude";
    String positive "up";
    String standard_name "altitude";
    String units "m";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 22.0, 51.0;
    String axis "Y";
    String coordsys "geographic";
    Int32 fraction_digits 4;
    String ioos_category "Location";
    String long_name "Latitude";
    String point_spacing "even";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range 215.0, 255.0;
    String axis "X";
    String coordsys "geographic";
    Int32 fraction_digits 4;
    String ioos_category "Location";
    String long_name "Longitude";
    String point_spacing "even";
    String standard_name "longitude";
    String units "degrees_east";
  }
  sst {
    Float32 _FillValue -9999999.0;
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String coordsys "geographic";
    Int32 fraction_digits 1;
    String ioos_category "Temperature";
    String long_name "Sea Surface Temperature";
    Float32 missing_value -9999999.0;
    String standard_name "sea_surface_temperature";
    String units "degree_Celsius";
  }
  NC_GLOBAL {
    String _CoordSysBuilder "ucar.nc2.dataset.conv.CF1Convention";
    String acknowledgement "NOAA NESDIS COASTWATCH, NOAA SWFSC ERD";
    String cdm_data_type "Grid";
    String composite "true";
    String contributor_name "NOAA NWS Monterey and NOAA CoastWatch";
    String contributor_role "Source of level 2 data.";
    String Conventions "COARDS, CF-1.6, Unidata Dataset Discovery v1.0";
    String creator_email "dave.foley@noaa.gov";
    String creator_name "NOAA CoastWatch, West Coast Node";
    String creator_url "https://coastwatch.pfeg.noaa.gov";
    String date_created "2013-10-03";
    String date_issued "2013-10-03";
    Float64 Easternmost_Easting 255.0;
    Float64 geospatial_lat_max 51.0;
    Float64 geospatial_lat_min 22.0;
    Float64 geospatial_lat_resolution 0.0125;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 255.0;
    Float64 geospatial_lon_min 215.0;
    Float64 geospatial_lon_resolution 0.0125;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 0.0;
    Float64 geospatial_vertical_min 0.0;
    String geospatial_vertical_positive "up";
    String geospatial_vertical_units "m";
    String history 
"NOAA NWS Monterey and NOAA CoastWatch
2013-10-03T06:01:49Z NOAA CoastWatch (West Coast Node) and NOAA SFSC ERD
2013-10-04T23:33:50Z https://oceanwatch.pfeg.noaa.gov/thredds/dodsC/satellite/AT/ssta/8day
2013-10-04T23:33:50Z https://coastwatch.pfeg.noaa.gov/erddap/griddap/erdATssta8day.nc?sst[(2013-01-25T16:00:00Z):1:(2013-01-25T16:00:00Z)][(0.0):1:(0.0)][(22.0):1:(51.0)][(215.0):1:(255.0)]
2018-10-18T16:55:09Z http://oceanwatch.pfeg.noaa.gov/thredds/dodsC/satellite/AT/ssta/8day
2018-10-18T16:55:09Z http://erddap.axiomdatascience.com/erddap/griddap/ERDATSSTA8DAY.das";
    String infoUrl "https://coastwatch.pfeg.noaa.gov/infog/AT_ssta_las.html";
    String institution "NOAA CoastWatch WCN";
    String keywords "8-day, avhrr, coastwatch, composite, day, degrees, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, lac, night, noaa, ocean, oceans, poes, sea, sea_surface_temperature, sst, surface, temperature, wcn, west";
    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 Metadata_Conventions "COARDS, CF-1.6, Unidata Dataset Discovery v1.0";
    String naming_authority "gov.noaa.pfeg.coastwatch";
    Float64 Northernmost_Northing 51.0;
    String origin "NOAA NWS Monterey and NOAA CoastWatch";
    String original_institution "NOAA CoastWatch, West Coast Node";
    String processing_level "3";
    String project "CoastWatch (https://coastwatch.noaa.gov/)";
    String projection "geographic";
    String projection_type "mapped";
    String references "NOAA POES satellites information: https://coastwatch.noaa.gov/poes_sst_overview.html . Processing information: http://www.osdpd.noaa.gov/PSB/EPS/CW/coastwatch.html . Processing reference: Walton C. C., W. G. Pichel, J. F. Sapper, D. A. May. The development and operational application of nonlinear algorithms for the measurement of sea surface temperatures with the NOAA polar-orbiting environmental satellites. J.G.R., 103: (C12) 27999-28012, 1998. Cloudmask reference: Stowe, L. L., P. A. Davis, and E. P. McClain.  Scientific basis and initial evaluation of the CLAVR-1 global clear/cloud classification algorithm for the advanced very high resolution radiometer. J. Atmos. Oceanic Technol., 16, 656-681. 1999. Calibration and Validation: Li, X., W. Pichel, E. Maturi, P. Clemente-Colon, and J. Sapper. Deriving the operational nonlinear multi-channel sea surface temperature algorithm coefficients for NOAA-15 AVHRR/3. International Journal of Remote Sensing, Volume 22, No. 4, 699 - 704, March 2001a. Calibration and Validation: Li, X, W. Pichel, P. Clemente-Colon, V. Krasnopolsky, and J. Sapper. Validation of coastal sea and lake surface temperature measurements derived from NOAA/AVHRR Data. International Journal of Remote Sensing, Vol. 22, No. 7, 1285-1303, 2001b.";
    String satellite "POES";
    String sensor "AVHRR HRPT";
    String source "satellite observation: POES, AVHRR HRPT";
    String sourceUrl "http://oceanwatch.pfeg.noaa.gov/thredds/dodsC/satellite/AT/ssta/8day";
    Float64 Southernmost_Northing 22.0;
    String standard_name_vocabulary "CF-12";
    String summary "NOAA CoastWatch provides sea surface temperature (SST) products derived from NOAA's Polar Operational Environmental Satellites (POES).  This data is provided at high resolution (0.0125 degrees) for the North Pacific Ocean.  Measurements are gathered by the Advanced Very High Resolution Radiometer (AVHRR) instrument, a multiband radiance sensor carried aboard the NOAA POES satellites.";
    String time_coverage_end "2017-08-23T00:00:00Z";
    String time_coverage_start "2010-12-30T00:00:00Z";
    String title "SST, POES AVHRR, LAC, West US, Day and Night (8 Day Composite)";
    Float64 Westernmost_Easting 215.0;
  }
}

 

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.

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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