Data Access Form

Dataset Title:	CT2007B.molefrac, 2000-2004
Institution:	NOAA ESRL (Dataset ID: noaa_psl_2d95_32ce_3c07)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Make a graph

To work correctly, this web page requires that JavaScript be enabled in your browser. Please:
1) Enable JavaScript in your browser:
      • Chrome: "Settings : Advanced : Privacy and security : Site Settings : JavaScript"
      • Firefox: (it should be always on!)"
      • Opera: "Settings : Websites : JavaScript"
      • Safari: "Safari : Preferences : Security : Enable JavaScript"
2) Reload this web page.

Dimensions	Size	Spacing
time (UTC)	1796	1 day 0h 24m 52s (uneven)

level (Model Level Number, level)	25	1.0 (even)

latitude (degrees_north)	45	4.0 (even)

longitude (degrees_east)	60	6.0 (even)

Grid Variables (which always also download all of the dimension variables)

co2 (Mole Fraction Of Carbon Dioxide In Air, micromol mol-1)

pressure (Air Pressure, pascal)

File type: (more information)

(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 9.46728e+8, 1.1044944e+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";
  }
  level {
    Int32 actual_range 1, 25;
    String axis "Z";
    String comment "From hybrid sigma pressure coordinate.  Level pressures already computed; see pressure variable.";
    String ioos_category "Statistics";
    String long_name "Model Level Number";
    String positive "up";
    String units "level";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range -88.0, 88.0;
    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 -177.0, 177.0;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  co2 {
    Float32 actual_range 357.24997, 473.5194;
    Float64 colorBarMaximum 1.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "CO2";
    String level_desc "Multiple levels";
    String long_name "Mole Fraction Of Carbon Dioxide In Air";
    Float32 missing_value -1.0e+34;
    String parent_stat "Individual Obs";
    String standard_name "mole_fraction_of_carbon_dioxide_in_air";
    String statistic "Analyzed Mean";
    String units "micromol mol-1";
    Float32 valid_range 357.24997, 473.5194;
    String var_desc "CarbonTracker CO2 mole fraction";
  }
  pressure {
    Float32 actual_range 47.81848, 105148.555;
    Float64 colorBarMaximum 105000.0;
    Float64 colorBarMinimum 95000.0;
    String ioos_category "Pressure";
    String long_name "Air Pressure";
    Float32 missing_value -1.0e+34;
    String standard_name "air_pressure";
    String units "pascal";
    Float32 valid_range 47.81848, 105148.555;
  }
  NC_GLOBAL {
    String cdm_data_type "Grid";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creator_email "carbontracker.team@noaa.gov";
    String creator_name "Carbontracker Team";
    String creator_type "group";
    String creator_url "https://www.esrl.noaa.gov/";
    String CT_runid "ct07b2i";
    String dataset_title "CarbonTracker CT2007B release";
    String disclaimer 
"CarbonTracker is an open product of the NOAA Earth System Research 
Laboratory using data from the Global Monitoring Division greenhouse 
gas observational network and collaborating institutions.  Results, 
including data, figures and tabular material found on the CarbonTracker 
website may be used for non-commercial purposes without restriction, 
but we request that the following acknowledgement text be included 
in documents or publications made using CarbonTracker results: 
     CarbonTracker results provided by NOAA/ESRL, 
     Boulder, Colorado, USA, https://www.esrl.noaa.gov/gmd/ccgg/carbontracker/

Since we expect to continuously update the CarbonTracker product, it
is important to identify which version you are using.  To provide
accurate citation, please include the version of the CarbonTracker
release in any use of these results.

The CarbonTracker team welcomes special requests for data products not
offered by default on this website, and encourages proposals for
collaborative activities.  Contact us at carbontracker.team@noaa.gov.";
    Float64 Easternmost_Easting 177.0;
    String email "carbontracker.team@noaa.gov";
    Float64 geospatial_lat_max 88.0;
    Float64 geospatial_lat_min -88.0;
    Float64 geospatial_lat_resolution 4.0;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 177.0;
    Float64 geospatial_lon_min -177.0;
    Float64 geospatial_lon_resolution 6.0;
    String geospatial_lon_units "degrees_east";
    String history 
"Mon Mar 15 11:53:20 2010: ncatted -O -a units,time,o,c,days since 2000-01-01 00:00:00 CT2007B.molefrac.nc
Tue Jun 10 10:08:27 2008: /usr/bin/ncrcat -H -O ./ct07b2i_molefrac_glb6x4_2000_co2.nc
Created on Tue Jun 10 2008 10:05:21 PDT
by script 'Time-stamp: <mistral.cmdl.noaa.gov:/Users/andy/Projects/model/LAS/make_psd_sample.sh - 10 Jun 2008 (Tue) 10:49:53 MDT>'
2024-04-27T12:42:19Z https://psl.noaa.gov/thredds/dodsC/Datasets/CarbonTracker/CT2007B.molefrac.nc
2024-04-27T12:42:19Z http://upwell.pfeg.noaa.gov/erddap/griddap/noaa_psl_2d95_32ce_3c07.das";
    String id "Datasets/CarbonTracker/CT2007B.molefrac.nc";
    String infoUrl "https://www.esrl.noaa.gov/gmd/ccgg/carbontracker/";
    String institution "NOAA ESRL";
    String keywords "air, air_pressure, atmosphere, atmospheric, carbon, carbon dioxide, chemistry, co2, compounds, ct2007b.molefrac, data, dioxide, earth, Earth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds, Earth Science > Atmosphere > Atmospheric Chemistry > Carbon And Hydrocarbon Compounds > Carbon Dioxide, Earth Science > Atmosphere > Atmospheric Pressure > Atmospheric Pressure Measurements, Earth Science > Atmosphere > Atmospheric Pressure > Sea Level Pressure, Earth Science > Atmosphere > Atmospheric Pressure > Static Pressure, esrl, fraction, hydrocarbon, laboratory, latitude, level, longitude, measurements, mole, mole_fraction_of_carbon_dioxide_in_air, noaa, pressure, research, science, sea, static, system, time";
    String keywords_vocabulary "GCMD Science Keywords";
    String license 
"CarbonTracker is an open product of the NOAA Earth System Research 
Laboratory using data from the Global Monitoring Division greenhouse 
gas observational network and collaborating institutions.  Results, 
including data, figures and tabular material found on the CarbonTracker 
website may be used for non-commercial purposes without restriction, 
but we request that the following acknowledgement text be included 
in documents or publications made using CarbonTracker results: 
     CarbonTracker results provided by NOAA/ESRL, 
     Boulder, Colorado, USA, https://www.esrl.noaa.gov/gmd/ccgg/carbontracker/

Since we expect to continuously update the CarbonTracker product, it
is important to identify which version you are using.  To provide
accurate citation, please include the version of the CarbonTracker
release in any use of these results.

The CarbonTracker team welcomes special requests for data products not
offered by default on this website, and encourages proposals for
collaborative activities.  Contact us at carbontracker.team@noaa.gov.";
    Int32 nco_openmp_thread_number 1;
    Float64 Northernmost_Northing 88.0;
    String references "https://www.psl.noaa.gov/data/gridded/data.carbontracker.html";
    String source "CarbonTracker release CT2007B";
    String sourceUrl "https://psl.noaa.gov/thredds/dodsC/Datasets/CarbonTracker/CT2007B.molefrac.nc";
    Float64 Southernmost_Northing -88.0;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "CT2007B.molefrac. NOAA Earth System Research Laboratory (ESRL) data from https://psl.noaa.gov/thredds/dodsC/Datasets/CarbonTracker/CT2007B.molefrac.nc.das .";
    String time_coverage_end "2004-12-31T12:00:00Z";
    String time_coverage_start "2000-01-01T12:00:00Z";
    String title "CT2007B.molefrac, 2000-2004";
    String url "https://www.esrl.noaa.gov/gmd/ccgg/carbontracker/";
    Float64 Westernmost_Easting -177.0;
  }
}

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.

(easy) You can get data by using the dataset's Data Access Form. It makes the URL for you.
(easy) You can make a graph or map by using the dataset's Make A Graph form. It makes the URL for you.
(not hard) You can bypass the forms and get the data or make a graph or map by generating the URL by hand or with a computer program or script.

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.