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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, cl [lev]
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Institution:  NOAA GFDL   (Dataset ID: noaa_gfdl_c7ae_7396_f874)
Information:  Summary ? | License ? | Metadata | Background (external link) | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 lev (1) ?      24    -0.04311406 (uneven)
  < slider >
 
Grid Variables (which always also download all of the dimension variables)
 a (hybrid sigma coordinate A coefficient for layer) ?
 b (hybrid sigma coordinate B coefficient for layer) ?

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 {
  lev {
    Float64 actual_range 0.004458161717246484, 0.9960816116303972;
    String axis "Z";
    String formula "p(n,k,j,i) = a(k)*p0 + b(k)*ps(n,j,i)";
    String formula_terms "p0 a b ps";
    String ioos_category "Location";
    String long_name "hybrid sigma pressure coordinate";
    String positive "down";
    String standard_name "atmosphere_hybrid_sigma_pressure_coordinate";
    String units "1";
  }
  a {
    String ioos_category "Location";
    String long_name "hybrid sigma coordinate A coefficient for layer";
  }
  b {
    String ioos_category "Location";
    String long_name "hybrid sigma coordinate B coefficient for layer";
  }
  NC_GLOBAL {
    String cdm_data_type "Grid";
    Float32 cmor_version 1.2;
    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/";
    String experiment_id "1%/year CO2 increase experiment (to quadrupling)";
    String gfdl_experiment_name "CM2Q-d2_1PctTo4x_j1";
    String history 
"Thu Jul 19 18:13:32 2007: annualCalc.py, input: cl_A1.000101-010012.nc, cl_A1.010101-020012.nc, cl_A1.020101-030012.nc,
2018-02-23T16:40:17Z http://data1.gfdl.noaa.gov:8380/thredds/dodsC/cl_annual_1to4x-0_R1_00010101-03001231
2018-02-23T16:40:17Z http://upwell.pfeg.noaa.gov/erddap/griddap/noaa_gfdl_c7ae_7396_f874.das";
    String id "cl_annual_1to4x-0_R1_00010101-03001231";
    String infoUrl "http://data1.gfdl.noaa.gov:8380/thredds/dodsC/cl_annual_1to4x-0_R1_00010101-03001231.html";
    String institution "NOAA GFDL";
    String keywords "00010101-03001231, 1pctto4x, 1to4x, 1to4x-0, annual, ar4, assessment, atmosphere, carbon, carbon dioxide, ccsp, change, climate, cm2.0, cm2q, cm2q-d2, co2, coefficient, coordinate, data, datasets, diagnosis, dioxide, dynamics, experiment, fluid, fourth, geophysical, gfdl, hybrid, increase, intercomparison, intergovernmental, ipcc, laboratory, layer, lev, model, noaa, output, panel, pcmdi, percent, program, quadrupling, report, run, science, sigma, to4x, US, year";
    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 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/cl_annual_1to4x-0_R1_00010101-03001231";
    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 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, cl [lev]";
  }
}

 

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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