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ERDDAP > griddap > Make A Graph ?

Dataset Title:  IPCC Datasets, ipcc ar4 CM2Q-d2 1PctTo4x j1 atmos, ipcc ar4 CM2Q-d2 1PctTo4x
j1 atmos annual, ipcc ar4 1to4x-0 annual 00010101-03001231, rsdt
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Institution:  NOAA GFDL   (Dataset ID: noaa_gfdl_a606_57b0_8a87)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Data Access Form
 
Graph Type:  ?
X Axis:  ?
Y Axis:  ?
Color:  ?
 
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time (UTC) ?     specify just 1 value →
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latitude (degrees_north) ?
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longitude (degrees_east) ?
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Y Axis Minimum:   Maximum:   Ascending: 
 
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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 -6.21200016e+10, -5.26907376e+10;
    String axis "T";
    String calendar "noleap";
    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";
    Float64 actual_range -89.0, 89.0;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range 1.25, 358.75;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  rsdt {
    Float32 _FillValue 1.0e+20;
    String cell_methods "time: mean";
    Float64 colorBarMaximum 500.0;
    Float64 colorBarMinimum -500.0;
    String history "At   15:19:16 on 09/24/2004: CMOR altered the data in the following ways: replaced missing value flag (-9.99000E+02) with standard missing value (1.00000E+20);";
    String ioos_category "Heat Flux";
    String long_name "TOA Incident Shortwave Radiation";
    Float32 missing_value 1.0e+20;
    String original_name "swdn_toa";
    String standard_name "toa_incoming_shortwave_flux";
    String units "W m-2";
  }
  NC_GLOBAL {
    String cdm_data_type "Grid";
    Float32 cmor_version 0.96;
    String comment "GFDL experiment name = CM2Q-d2_1PctTo4x_j1. PCMDI experiment name = 1%to4x (run1). Initial conditions for this experiment were taken from 1 January of year 41 of the 1860 control model experiment named CM2Q_Control-1860_d2. In the CM2Q-d2_1PctTo4x_j1 experiment atmospheric CO2 levels were prescribed to increase from their initial mixing ratio level of 286.05 ppmv at a compounded rate of +1 percent per year until year 140 (the point of quadrupling). CO2 levels were held constant at 1144.21 ppmv from year 141 through the end of the 300 year long experiment. For the entire 300 year duration of the experiment, all non-CO2 forcing agents (CH4, N2O, halons, tropospheric and stratospheric O3, tropospheric sulfates, black and organic carbon, dust, sea salt, solar irradiance, and the distribution of land cover types) were held constant at values representative of year 1860.";
    String contact "GFDL.Climate.Model.Info@noaa.gov";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creator_email "GFDL.Climate.Model.Info@noaa.gov";
    String creator_name "NOAA GFDL";
    String creator_type "institution";
    String creator_url "https://www.gfdl.noaa.gov/";
    Float64 Easternmost_Easting 358.75;
    String experiment_id "1%/year CO2 increase experiment (to quadrupling)";
    Float64 geospatial_lat_max 89.0;
    Float64 geospatial_lat_min -89.0;
    Float64 geospatial_lat_resolution 2.0;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 358.75;
    Float64 geospatial_lon_min 1.25;
    Float64 geospatial_lon_resolution 2.5;
    String geospatial_lon_units "degrees_east";
    String gfdl_experiment_name "CM2Q-d2_1PctTo4x_j1";
    String history 
"Sun Jun 19 00:58:30 2005: annualCalc.py, input: rsdt_A1.000101-030012.nc,
2018-02-25T08:07:37Z http://data1.gfdl.noaa.gov:8380/thredds/dodsC/rsdt_annual_1to4x-0_R1_00010101-03001231
2018-02-25T08:07:37Z http://upwell.pfeg.noaa.gov/griddap/noaa_gfdl_a606_57b0_8a87.das";
    String id "rsdt_annual_1to4x-0_R1_00010101-03001231";
    String infoUrl "http://data1.gfdl.noaa.gov:8380/thredds/dodsC/rsdt_annual_1to4x-0_R1_00010101-03001231.html";
    String institution "NOAA GFDL";
    String keywords "00010101-03001231, 1pctto4x, 1to4x, 1to4x-0, annual, ar4, assessment, atmosphere, atmospheric, carbon, carbon dioxide, ccsp, change, climate, cm2.0, cm2q, cm2q-d2, co2, data, datasets, diagnosis, dioxide, dynamics, earth, Earth Science > Atmosphere > Atmospheric Radiation > Shortwave Radiation, experiment, fluid, flux, fourth, geophysical, gfdl, heat, heat flux, incident, incoming, increase, intercomparison, intergovernmental, ipcc, laboratory, latitude, longitude, model, noaa, output, panel, pcmdi, percent, program, quadrupling, radiation, report, rsdt, run, science, shortwave, time, to4x, toa, toa_incoming_shortwave_flux, US, year";
    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.";
    Float64 Northernmost_Northing 89.0;
    String project_id "IPCC Fourth Assessment and US CCSP Projects";
    Int32 realization 1;
    String references "The GFDL Data Portal (http://nomads.gfdl.noaa.gov/) provides access to NOAA/GFDL's publicly available model input and output data sets. From this web site one can view and download data sets and documentation, including those related to the GFDL CM2.0 model experiments run for the IPCC's 4th Assessment Report and the US CCSP.";
    String source "GFDL_CM2.0 (2004): atmosphere: AM2 (am2p13, N45L24); ocean: OM3 (mom4p0_om3p4, tripolar360x200L50); sea ice: SIS; land: LM2; infrastructure: FMS J release";
    String sourceUrl "http://data1.gfdl.noaa.gov:8380/thredds/dodsC/rsdt_annual_1to4x-0_R1_00010101-03001231";
    Float64 Southernmost_Northing -89.0;
    String standard_name_vocabulary "CF Standard Name Table v29";
    String summary "Geophysical Fluid Dynamics Laboratory (GFDL) CM2.0, 1%to4x (run 1) 1%/year CO2 increase experiment (to quadrupling) output for Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report (AR4) and US Climate Change Science Program (CCSP). GFDL experiment name = CM2Q-d2_1PctTo4x_j1. Program for Climate Model Diagnosis and Intercomparison (PCMDI) experiment name = 1%to4x (run1). Initial conditions for this experiment were taken from 1 January of year 41 of the 1860 control model experiment named CM2Q_Control-1860_d2. In the CM2Q-d2_1PctTo4x_j1 experiment atmospheric CO2 levels were prescribed to increase from their initial mixing ratio level of 286.05 ppmv at a compounded rate of +1 percent per year until year 140 (the point of quadrupling). CO2 levels were held constant at 1144.21 ppmv from year 141 through the end of the 300 year long experiment. For the entire 300 year duration of the experiment, all non-CO2 forcing agents (CH4, N2O, halons, tropospheric and stratospheric O3, tropospheric sulfates, black and organic carbon, dust, sea salt, solar irradiance, and the distribution of land cover types) were held constant at values representative of year 1860.";
    String table_id "Table A0 (GFDL definition)";
    String time_coverage_end "0300-04-18T12:00:00Z";
    String time_coverage_start "0001-07-02T12:00:00Z";
    String title "IPCC Datasets, ipcc ar4 CM2Q-d2 1PctTo4x j1 atmos, ipcc ar4 CM2Q-d2 1PctTo4x j1 atmos annual, ipcc ar4 1to4x-0 annual 00010101-03001231, rsdt";
    Float64 Westernmost_Easting 1.25;
  }
}

 

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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