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Dataset Title:  HIRS outgoing longwave radiation, regridded to 90S to 90N (Top Dataset,
olrcdr, olr.day.mean), 1.0°, 1979-2012
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Institution:  NOAA ESRL   (Dataset ID: noaa_esrl_f788_c263_83ca)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Data Access Form
 
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Things You Can Do With Your Graphs

Well, you can do anything you want with your graphs, of course. But some things you might not have considered are:

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 2.839968e+8, 1.356912e+9;
    String axis "T";
    String delta_t "0000-00-01 00:00:00";
    String ioos_category "Time";
    String long_name "Time";
    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";
    Float32 actual_range -90.0, 90.0;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range 0.5, 359.5;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  olr {
    Float32 _FillValue -9.99e+8;
    Float32 actual_range 78.87619, 392.5756;
    Float64 colorBarMaximum 500.0;
    Float64 colorBarMinimum -500.0;
    String ioos_category "Heat Flux";
    String level_desc "TOA";
    String long_name "outgoing longwave radiation";
    Float32 missing_value -9.99e+8;
    String parent_stat "Individual Obs";
    String standard_name "toa_outgoing_longwave_flux";
    String statistic "Mean";
    String units "W m-2";
    Float32 valid_range 50.0, 500.0;
    String var_desc "Outgoing Longwave Radiation";
  }
  NC_GLOBAL {
    String cdm_data_type "Grid";
    String comment "regridded to 90S to 90N and days are time aggregated to a single file at NOAA/ESRL PSD";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String create_date "Jan 2015";
    String creation_date "Mon Aug 11 14:43:21 MDT 2014";
    String creator_email "esrl.psd.data@noaa.gov";
    String creator_name "NOAA ESRL PSD";
    String creator_type "institution";
    String creator_url "https://www.esrl.noaa.gov/psd/";
    String dataset_title "Outgoing Longwave Radiation Daily Climate Data Record (OLR Daily CDR)";
    String description "The product contains the 1-degree by 1-degree daily mean outgoing longwave radiation flux at the top of the atmosphere derived from HIRS radiance observations onboard NOAA TIROS-N series and MetOp satellites. The OLR retrieval uses multispectral regression models (Ellingson et al., 1989, Lee, 2014). The CDR processing includes HIRS radiance calibration, inter-satellite HIRS OLR calibration, normalization of geostationary-based  OLR retrieval to HIRS, and grid-based 7-day boxcar temporal integration assisted with Imager-based OLR derived from Gridsat CDR data (Lee, 2014).";
    Float64 Easternmost_Easting 359.5;
    Float64 geospatial_lat_max 90.0;
    Float64 geospatial_lat_min -90.0;
    Float64 geospatial_lat_resolution 1.0;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 359.5;
    Float64 geospatial_lon_min 0.5;
    Float64 geospatial_lon_resolution 1.0;
    String geospatial_lon_units "degrees_east";
    String history 
"2018-07-20T07:05:19Z https://www.esrl.noaa.gov/psd/thredds/dodsC/Datasets/olrcdr/olr.day.mean.nc
2018-07-20T07:05:19Z http://upwell.pfeg.noaa.gov/griddap/noaa_esrl_f788_c263_83ca.das";
    String id "Datasets/olrcdr/olr.day.mean.nchttps://www.esrl.noaa.gov/psd/thredds/dodsC/Datasets/olrcdr/olr.day.mean.nc";
    String infoUrl "https://www.esrl.noaa.gov/psd/data/gridded/data.olrdcdr.interp.html";
    String institution "NOAA ESRL";
    String keywords "90n, 90s, atmosphere, atmospheric, data, dataset, earth, Earth Science > Atmosphere > Atmospheric Radiation > Longwave Radiation, Earth Science > Atmosphere > Atmospheric Radiation > Outgoing Longwave Radiation, esrl, flux, heat, heat flux, hirs, infrared, laboratory, latitude, longitude, longwave, noaa, observation, olr, olr.day.mean, olrcdr, outgoing, radiation, regridded, research, satellite, science, system, television, time, tiros, toa, toa_outgoing_longwave_flux, top";
    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 ncdc_acknowledgment "This project was supported in part by a grant from the NOAA Climate Data Record (CDR) Program for Satellites";
    Float64 Northernmost_Northing 90.0;
    String original_source "https://www.ncdc.noaa.gov/news/new-outgoing-longwave-radiation-climate-data-record";
    String platform_source "TIROS-N > Television Infrared Observation Satellite - N, NOAA-6 > National Oceanic Atmospheric Administration - 6, NOAA-7 > National Oceanic Atmospheric Administration - 7, NOAA-8 > National Oceanic Atmospheric Administration - 8, NOAA-9 > National Oceanic Atmospheric Administration - 9, NOAA-10 > National Oceanic Atmospheric Administration - 10, NOAA-11 > National Oceanic Atmospheric Administration - 11, NOAA-12 > National Oceanic Atmospheric Administration - 12, NOAA-14 > National Oceanic Atmospheric Administration - 14, NOAA-15 > National Oceanic Atmospheric Administration - 15, NOAA-16 > National Oceanic Atmospheric Administration - 16, NOAA-17 > National Oceanic Atmospheric Administration - 17, NOAA-18 > National Oceanic Atmospheric Administration - 18, NOAA-19 > National Oceanic Atmospheric Administration - 19, MetOp-A > Meteorological Operational Polar Satellite - A, MetOp-B > Meteorological Operational Polar Satellite - B";
    String references "https://www.esrl.noaa.gov/psd/data/gridded/data.olrdcdr.interp.html";
    String sensor "HIRS-2 > High Resolution Infra-red Sounder/2, HIRS-2I > High Resolution Infra-red Sounder/2I, HIRS-3 > High Resolution Infra-red Sounder/3, HIRS-4 > High Resolution Infra-red Sounder/4";
    String source_file "olr.1deg.1x.nc";
    String sourceUrl "https://www.esrl.noaa.gov/psd/thredds/dodsC/Datasets/olrcdr/olr.day.mean.nc";
    Float64 Southernmost_Northing -90.0;
    String standard_name_vocabulary "CF Standard Name Table v55";
    String summary "HIRS outgoing longwave radiation, regridded to 90S to 90N. The product contains the 1-degree by 1-degree daily mean outgoing longwave radiation flux at the top of the atmosphere derived from HIRS radiance observations onboard NOAA Television Infrared Observation Satellite (TIROS)-N series and MetOp satellites. The OLR retrieval uses multispectral regression models (Ellingson et al., 1989, Lee, 2014). The CDR processing includes HIRS radiance calibration, inter-satellite HIRS OLR calibration, normalization of geostationary-based  OLR retrieval to HIRS, and grid-based 7-day boxcar temporal integration assisted with Imager-based OLR derived from Gridsat CDR data (Lee, 2014).";
    String time_coverage_end "2012-12-31T00:00:00Z";
    String time_coverage_start "1979-01-01T00:00:00Z";
    String title "HIRS outgoing longwave radiation, regridded to 90S to 90N (Top Dataset, olrcdr, olr.day.mean), 1.0°, 1979-2012";
    Float64 Westernmost_Easting 0.5;
  }
}

 

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://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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