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Dataset Title:  SST, POES AVHRR, LAC, Alaska, Day and Night (Hourly)
Dataset ID:  erdAKsstahday RSS Subscribe
Institution:  NOAA CoastWatch, West Coast Node
Information:  Summary | Variables | Background | Make A Graph

Dimensions Start Stride Stop  Size    Spacing
time (Centered Time, UTC)      11985    02:28:27 (uneven)
altitude (m)      1    (just one value)
latitude (degrees_north)      2401    0.0125 (even)
longitude (degrees_east)      5601    0.0125 (even)
 
Grid Variables (which always also download all of the dimension variables)
sst (Sea Surface Temperature, degree_C)

File type:

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.12014972e+9, 1.22688588e+9;
    String axis "T";
    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 45.0, 75.0;
    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 165.0, 235.0;
    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_C";
  }
  NC_GLOBAL {
    String acknowledgement "NOAA NESDIS COASTWATCH, NOAA SWFSC ERD";
    String cdm_data_type "Grid";
    String composite "false";
    String contributor_name "NOAA NWS Monterey and NOAA CoastWatch";
    String contributor_role "Source of level 2 data.";
    String Conventions "COARDS, CF-1.0, Unidata Dataset Discovery v1.0";
    String creator_email "dave.foley@noaa.gov";
    String creator_name "NOAA CoastWatch, West Coast Node";
    String creator_url "http://coastwatch.pfel.noaa.gov";
    String date_created "2008-11-18Z";
    String date_issued "2008-11-18Z";
    Float64 Easternmost_Easting 235.0;
    Float64 geospatial_lat_max 75.0;
    Float64 geospatial_lat_min 45.0;
    Float64 geospatial_lat_resolution 0.0125;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 235.0;
    Float64 geospatial_lon_min 165.0;
    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
2008-11-18T00:37:27Z NOAA CoastWatch (West Coast Node) and NOAA SFSC ERD
2009-11-23 http://192.168.31.18/thredds/dodsC/satellite/AK/ssta/hday
2009-11-23 http://coastwatch.pfeg.noaa.gov/erddap/griddap/erdAKsstahday.das";
    String infoUrl "http://coastwatch.pfeg.noaa.gov/infog/AK_ssta_las.html";
    String institution "NOAA CoastWatch, West Coast Node";
    String keywords "EARTH SCIENCE > Oceans > Ocean Temperature > Sea Surface Temperature";
    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, 
CoastWatch, 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 naming_authority "gov.noaa.pfel.coastwatch";
    Float64 Northernmost_Northing 75.0;
    String origin "NOAA NWS Monterey and NOAA CoastWatch";
    String processing_level "3";
    String project "CoastWatch (http://coastwatch.noaa.gov/)";
    String projection "geographic";
    String projection_type "mapped";
    String references 
"NOAA POES satellites information: http://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://192.168.31.18/thredds/dodsC/satellite/AK/ssta/hday";
    Float64 Southernmost_Northing 45.0;
    String standard_name_vocabulary "CF-1.0";
    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 title "SST, POES AVHRR, LAC, Alaska, Day and Night (Hourly)";
    Float64 Westernmost_Easting 165.0;
  }
}

 

Using griddap to Request Data and Graphs from Gridded Datasets

griddap lets you request gridded data (for example, environmental data from satellites) and graphs of gridded data, via specially formed URLs.
The URLs specify everything: the dataset, the desired file type for the response, and the subset of data that you want to receive.
You can form these URLs by hand or with a computer program,
or (much easier) you can use the dataset's "Data Access Form" (oriented to requests for data)
or the dataset's "Make A Graph" form (oriented to requests for graphs and maps),
both of which generate the URL when the form is submitted.
griddap is a superset of the OPeNDAP DAP hyperslab protocol.

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)]

For details, see the griddap Documentation.
 
ERDDAP Version 1.22

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