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Dataset Title:  NCEP/NCAR Reanalysis (1948-present), Lon+/-180 Subscribe RSS
Institution:  NCEP, NCAR, NOAA ESRL   (Dataset ID: esrlNcepRe_LonPM180)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Data Access Form
 
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X Axis:  ?
Y Axis:  ?
Color:  ?
 
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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 {
    Int32 _ChunkSizes 1;
    String _CoordinateAxisType "Time";
    Float64 actual_range -6.943104e+8, 1.526688e+9;
    String avg_period "0000-00-01 00:00:00";
    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 -180.0, 177.5;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  air {
    Int32 _ChunkSizes 1, 73, 144;
    Float64 colorBarMaximum 313.0;
    Float64 colorBarMinimum 263.0;
    String dataset "NCEP Reanalysis Daily Averages";
    Int16 GRIB_id 11;
    String GRIB_name "TMP";
    String ioos_category "Temperature";
    Int16 least_significant_digit 1;
    String level_desc "Surface";
    String long_name "mean Daily Air temperature at sigma level 995";
    Float32 missing_value -9.96921e+36;
    String parent_stat "Individual Obs";
    Int16 precision 2;
    String standard_name "air_temperature";
    String statistic "Mean";
    String units "degK";
    Float32 valid_range 185.16, 331.16;
    String var_desc "Air temperature";
  }
  lftx {
    Int32 _ChunkSizes 1, 73, 144;
    Float64 colorBarMaximum 30.0;
    Float64 colorBarMinimum -10.0;
    String dataset "NCEP Reanalysis Daily Averages";
    Int16 GRIB_id 131;
    String GRIB_name "LFT_X";
    String ioos_category "Temperature";
    Int16 least_significant_digit 1;
    String level_desc "Surface";
    String long_name "mean Daily Surface Lifted Index";
    Float32 missing_value -9.96921e+36;
    String parent_stat "Individual Obs";
    Int16 precision 2;
    String statistic "Mean";
    String units "degK";
    Float32 valid_range -18.0, 70.0;
    String var_desc "Surface Lifted Index";
  }
  lftx4 {
    Int32 _ChunkSizes 1, 73, 144;
    Float64 colorBarMaximum 30.0;
    Float64 colorBarMinimum -10.0;
    String dataset "NCEP Reanalysis Daily Averages";
    Int16 GRIB_id 132;
    String GRIB_name "4LFTX";
    String ioos_category "Temperature";
    Int16 least_significant_digit 1;
    String level_desc "Surface";
    String long_name "mean Daily Best (4-layer) Lifted Index";
    Float32 missing_value -9.96921e+36;
    String parent_stat "Individual Obs";
    Int16 precision 2;
    String statistic "Mean";
    String units "degK";
    Float32 valid_range -25.0, 50.0;
    String var_desc "Best (4-layer) Lifted Index";
  }
  omega {
    Int32 _ChunkSizes 1, 73, 144;
    Float64 colorBarMaximum 0.4;
    Float64 colorBarMinimum -0.4;
    String dataset "NCEP Reanalysis Daily Averages";
    Int16 GRIB_id 39;
    String GRIB_name "VVEL";
    String ioos_category "Pressure";
    Int16 least_significant_digit 3;
    String level_desc "Surface";
    String long_name "mean Daily omega at sigma level 0.995";
    Float32 missing_value -9.96921e+36;
    String parent_stat "Individual Obs";
    Int16 precision 3;
    String statistic "Mean";
    String units "Pascal/s";
    Float32 valid_range -3.0, 7.0;
    String var_desc "Omega (dp/dt)";
  }
  pottmp {
    Int32 _ChunkSizes 1, 73, 144;
    Float64 colorBarMaximum 313.0;
    Float64 colorBarMinimum 263.0;
    String dataset "NCEP Reanalysis Daily Averages";
    Int16 GRIB_id 13;
    String GRIB_name "POT";
    String ioos_category "Temperature";
    Int16 least_significant_digit 1;
    String level_desc "Surface";
    String long_name "mean Daily potential temperature at sigma level 995";
    Float32 missing_value -9.96921e+36;
    String parent_stat "Individual Obs";
    Int16 precision 1;
    String standard_name "air_potential_temperature";
    String statistic "Mean";
    String units "degK";
    Float32 valid_range 150.0, 900.0;
    String var_desc "Potential Temperature";
  }
  pr_wtr {
    Int32 _ChunkSizes 1, 73, 144;
    Float64 colorBarMaximum 70.0;
    Float64 colorBarMinimum 0.0;
    String dataset "NCEP Reanalysis Daily Averages";
    Int16 GRIB_id 54;
    String GRIB_name "PWAT";
    String ioos_category "Meteorology";
    Int16 least_significant_digit -1;
    String level_desc "Entire Atmosphere Considered As a Single Layer";
    String long_name "mean Daily Precipitable Water for entire atmosphere";
    Float32 missing_value -9.96921e+36;
    String parent_stat "Individual Obs";
    Int16 precision 2;
    String standard_name "atmosphere_mass_content_of_water";
    String statistic "Mean";
    String units "kg/m^2";
    Float32 valid_range -50.0, 150.0;
    String var_desc "Precipitable Water Content";
  }
  pres {
    Int32 _ChunkSizes 1, 73, 144;
    Float64 colorBarMaximum 105000.0;
    Float64 colorBarMinimum 95000.0;
    String dataset "NCEP Reanalysis Daily Averages";
    Int16 GRIB_id 1;
    String GRIB_name "PRES";
    String ioos_category "Pressure";
    Int16 least_significant_digit -1;
    String level_desc "Surface";
    String long_name "mean Daily Pressure at surface";
    Float32 missing_value -9.96921e+36;
    String parent_stat "Individual Obs";
    Int16 precision -1;
    String standard_name "surface_air_pressure";
    String statistic "Mean";
    String units "Pascals";
    Float32 valid_range 40000.0, 115000.0;
    String var_desc "Pressure";
  }
  rhum {
    Int32 _ChunkSizes 1, 73, 144;
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String dataset "NCEP Reanalysis Daily Averages";
    Int16 GRIB_id 52;
    String GRIB_name "RH";
    String ioos_category "Meteorology";
    Int16 least_significant_digit 0;
    String level_desc "Surface";
    String long_name "mean Daily relative humidity at sigma level 995";
    Float32 missing_value -9.96921e+36;
    String parent_stat "Individual Obs";
    Int16 precision 2;
    String standard_name "relative_humidity";
    String statistic "Mean";
    String units "percent";
    Float32 valid_range -25.0, 125.0;
    String var_desc "Relative humidity";
  }
  slp {
    Int32 _ChunkSizes 1, 73, 144;
    Float64 colorBarMaximum 105000.0;
    Float64 colorBarMinimum 95000.0;
    String dataset "NCEP Reanalysis Daily Averages";
    Int16 GRIB_id 2;
    String GRIB_name "PRMSL";
    String ioos_category "Pressure";
    Int16 least_significant_digit -1;
    String level_desc "Sea Level";
    String long_name "mean Daily Sea Level Pressure";
    Float32 missing_value -9.96921e+36;
    String parent_stat "Individual Obs";
    Int16 precision 0;
    String standard_name "air_pressure_at_sea_level";
    String statistic "Mean";
    String units "Pascals";
    Float32 valid_range 87000.0, 115000.0;
    String var_desc "Sea Level Pressure";
  }
  uwnd {
    Int32 _ChunkSizes 1, 73, 144;
    Float64 colorBarMaximum 15.0;
    Float64 colorBarMinimum -15.0;
    String dataset "NCEP Reanalysis Daily Averages";
    Int16 GRIB_id 33;
    String GRIB_name "UGRD";
    String ioos_category "Wind";
    Int16 least_significant_digit 1;
    String level_desc "Surface";
    String long_name "mean Daily u-wind at sigma level 995";
    Float32 missing_value -9.96921e+36;
    String parent_stat "Individual Obs";
    Int16 precision 2;
    String standard_name "eastward_wind";
    String statistic "Mean";
    String units "m/s";
    Float32 valid_range -102.2, 102.2;
    String var_desc "u-wind";
  }
  vwnd {
    Int32 _ChunkSizes 1, 73, 144;
    Float64 colorBarMaximum 15.0;
    Float64 colorBarMinimum -15.0;
    String dataset "NCEP Reanalysis Daily Averages";
    Int16 GRIB_id 34;
    String GRIB_name "VGRD";
    String ioos_category "Wind";
    Int16 least_significant_digit 1;
    String level_desc "Surface";
    String long_name "mean Daily v wind at sigma level 995";
    Float32 missing_value -9.96921e+36;
    String parent_stat "Individual Obs";
    Int16 precision 2;
    String standard_name "northward_wind";
    String statistic "Mean";
    String units "m/s";
    Float32 valid_range -102.2, 102.2;
    String var_desc "v-wind";
  }
  NC_GLOBAL {
    String cdm_data_type "Grid";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String dataset_title "NCEP-NCAR Reanalysis 1";
    String description 
"Data is from NMC initialized reanalysis
(4x/day).  These are the 0.9950 sigma level values.";
    Float64 Easternmost_Easting 177.5;
    Float64 geospatial_lat_max 90.0;
    Float64 geospatial_lat_min -90.0;
    Float64 geospatial_lat_resolution 2.5;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 177.5;
    Float64 geospatial_lon_min -180.0;
    Float64 geospatial_lon_resolution 2.5;
    String geospatial_lon_units "degrees_east";
    String history 
"created 99/05/11 by Hoop (netCDF2.3)
Converted to chunked, deflated non-packed NetCDF4 2014/09
2018-05-22T15:53:14Z https://www.esrl.noaa.gov/psd/thredds/dodsC/Datasets/ncep.reanalysis.dailyavgs/surface/air.sig995.1948.nc
2018-05-22T15:53:14Z http://coastwatch.pfeg.noaa.gov/griddap/esrlNcepRe_LonPM180.das";
    String infoUrl "https://www.esrl.noaa.gov/psd/data/reanalysis/reanalysis.shtml";
    String institution "NCEP, NCAR, NOAA ESRL";
    String keywords "1948-present, 4-layer, air, air_potential_temperature, air_pressure_at_sea_level, air_temperature, atmosphere, atmosphere_mass_content_of_water, atmospheric, best, content, daily, Earth Science > Atmosphere > Atmospheric Pressure > Atmospheric Pressure Measurements, Earth Science > Atmosphere > Atmospheric Pressure > Sea Level Pressure, Earth Science > Atmosphere > Atmospheric Pressure > Static Pressure, Earth Science > Atmosphere > Atmospheric Pressure > Surface Pressure, Earth Science > Atmosphere > Atmospheric Temperature > Air Temperature, Earth Science > Atmosphere > Atmospheric Temperature > Potential Temperature, Earth Science > Atmosphere > Atmospheric Temperature > Surface Air Temperature, Earth Science > Atmosphere > Atmospheric Water Vapor > Humidity, Earth Science > Atmosphere > Atmospheric Water Vapor > Precipitable Water, Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor, Earth Science > Atmosphere > Atmospheric Winds > Surface Winds, eastward, eastward_wind, entire, esrl, humidity, index, layer, level, lifted, mass, mean, measurements, meteorology, ncar, ncep, nmc, noaa, northward, northward_wind, omega, potential, precipitable, present, pressure, reanalysis, relative, relative_humidity, sea, seawater, sigma, static, surface, surface_air_pressure, temperature, u-wind, vapor, water, wind, winds";
    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 90.0;
    String platform "Model";
    String References "https://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.html";
    String references "https://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.html";
    String sourceUrl "https://www.esrl.noaa.gov/psd/thredds/dodsC/Datasets/ncep.reanalysis.dailyavgs/surface/air.sig995.1948.nc";
    Float64 Southernmost_Northing -90.0;
    String standard_name_vocabulary "CF Standard Name Table v29";
    String summary "The NCEP/NCAR Reanalysis 1 project is using a state-of-the-art analysis/forecast system to perform data assimilation using past data from 1948 to the present.  Data is from NMC initialized reanalysis (4x/day).  See the PROBLEMS LIST at https://www.esrl.noaa.gov/psd/data/reanalysis/problems.shtml";
    String testOutOfDate "now-5days";
    String time_coverage_end "2018-05-19T00:00:00Z";
    String time_coverage_start "1948-01-01T00:00:00Z";
    String title "NCEP/NCAR Reanalysis (1948-present), Lon+/-180";
    Float64 Westernmost_Easting -180.0;
  }
}

 

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.

griddap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://coastwatch.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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