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Dataset Title:  daily 4x Daily NOAA-CIRES 20th Century Reanalysis V2c (Top Dataset, monolevel,
tmax.2m.day.ltm), 0001
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Institution:  325 Broadway R/PSD1, Boulder, CO 80305   (Dataset ID: noaa_esrl_c173_29a1_d8d3)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (UTC) ?      365    1 day (even)
  < slider >
 latitude (degrees_north) ?      94    -1.904129 (uneven)
  < slider >
 longitude (degrees_east) ?      192    1.875 (even)
  < slider >
 
Grid Variables (which always also download all of the dimension variables)
 tmax (Daily Long Term Mean 3-hourly Maximum Temperature at 2 m, degK) ?
 valid_yr_count (count of non-missing values used in mean) ?

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 {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range -6.21357696e+10, -6.210432e+10;
    String axis "T";
    String climatology "climatology_bounds";
    String climo_period "1981/01/01 - 2010/12/31";
    String coordinate_defines "point";
    String delta_t "0000-00-01 00:00:00";
    String ioos_category "Time";
    String long_name "Time";
    Float64 ltm_range 1586616.0, 1849560.0;
    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 -88.542, 88.542;
    String axis "Y";
    String coordinate_defines "point";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range 0.0, 358.125;
    String axis "X";
    String coordinate_defines "point";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  tmax {
    Float32 actual_range 214.7767, 323.21;
    Float64 colorBarMaximum 313.0;
    Float64 colorBarMinimum 263.0;
    String datum "wgs84";
    Int16 GRIB_id 15;
    String GRIB_name "TMAX2mVal";
    String ioos_category "Temperature";
    String level_desc "2 m";
    String long_name "Daily Long Term Mean 3-hourly Maximum Temperature at 2 m";
    Float32 missing_value -9.96921e+36;
    String parent_stat "Mean";
    Int16 precision 2;
    String standard_name "air_temperature";
    String statistic "Long Term Mean";
    String statistic_method "Ensemble mean is calculated by averaging over all 56 ensemble members at each time step";
    String units "degK";
    Float32 valid_range 100.0, 500.0;
    String var_desc "Maximum Temperature";
  }
  valid_yr_count {
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Statistics";
    String long_name "count of non-missing values used in mean";
    Int16 missing_value 32767;
  }
  NC_GLOBAL {
    String assimilation_algorithm "Ensemble Kalman Filter";
    String cdm_data_type "Grid";
    String citation 
"Compo,G.P. <https://www.esrl.noaa.gov/psd/people/gilbert.p.compo>, 
J.S. Whitaker <https://www.esrl.noaa.gov/psd/people/jeffrey.s.whitaker>
P.D. Sardeshmukh, N.Matsui, R.J. Allan, X. Yin, B.E. Gleason, R.S. Vose, 
G. Rutledge, P. Bessemoulin, S. Bronnimann, M. Brunet, R.I. Crouthamel, 
A.N. Grant, P.Y. Groisman, P.D. Jones, M. Kruk, A.C. Kruger, G.J. Marshal, 
M. Maugeri, H.Y. Mok, O. Nordli, T.F. Ross, R.M. Trio, X.L. Wang, 
S.D. Woodruff, and S.J. Worley, 2011:  The Twentieth Century Reanalysis Project
<https://onlinelibrary.wiley.com/doi/10.1002/qj.776/abstract>.
Quarterly J. Roy. Meteorol. Soc./, 137, 1-28. DOI: 10.1002/qj.776.";
    String comment 
"Data is from 
NOAA-CIRES 20th Century Reanalysis version 2c
(4x/day).  It consists of most variables interpolated to
pressure surfaces from model (sigma) surfaces.";
    String contact "esrl.psd.data@noaa.gov";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creation_date "2014-06-13T18:30:07Z";
    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 "NOAA-CIRES 20th Century Reanalysis (V2c)";
    Float64 Easternmost_Easting 358.125;
    String forcing 
"CO2, Sl, Vl, SST, Oz (Oz is prognostic, SST is SODAsi.2c, Sl starts in 1944 
repeating 11 year solar cycle prior, Vl is Sato et al. 1993)";
    String forcing_note 
"Additional information on the external forcings uses in this 
reanalysis can be found at http://dx.doi.rog/10.1002/qj.776";
    Float64 geospatial_lat_max 88.542;
    Float64 geospatial_lat_min -88.542;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 358.125;
    Float64 geospatial_lon_min 0.0;
    Float64 geospatial_lon_resolution 1.875;
    String geospatial_lon_units "degrees_east";
    String history 
"Created 2015/03/30 by doDayLTM
2018-07-18T16:44:22Z https://www.esrl.noaa.gov/psd/thredds/dodsC/Datasets/20thC_ReanV2c/Derived/Dailies/gaussian/monolevel/tmax.2m.day.ltm.nc
2018-07-18T16:44:22Z http://upwell.pfeg.noaa.gov/erddap/griddap/noaa_esrl_c173_29a1_d8d3.das";
    String id "Datasets/20thC_ReanV2c/Derived/Dailies/gaussian/monolevel/tmax.2m.day.ltm.nchttps://www.esrl.noaa.gov/psd/thredds/dodsC/Datasets/20thC_ReanV2c/Derived/Dailies/gaussian/monolevel/tmax.2m.day.ltm.nc";
    String infoUrl "https://www.esrl.noaa.gov/psd/data/gridded/data.20thC_ReanV2c.html";
    String institution "325 Broadway R/PSD1, Boulder, CO 80305";
    String keywords "20th, 3-hourly, air, air_temperature, atmosphere, atmospheric, boulder, broadway, century, cires, cooperative, count, daily, data, dataset, day, earth, Earth Science > Atmosphere > Atmospheric Temperature > Air Temperature, Earth Science > Atmosphere > Atmospheric Temperature > Surface Air Temperature, environmental, hour, hourly, institute, latitude, long, longitude, maximum, mean, missing, monolevel, noaa, noaa-cires, non, non-missing, psd1, reanalysis, research, science, sciences, statistics, surface, temperature, term, time, tmax, tmax.2m.day.ltm, top, used, v2c, valid_yr_count, values";
    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 name_of_model_used "ensda_v351";
    Float64 Northernmost_Northing 88.542;
    String not_missing_threshold_percent "minimum 3% values input to have non-missing output value";
    String observations "International Surface Pressure Databank version 3.2.9";
    String platform "Model";
    String product "reanalysis";
    String references "https://www.esrl.noaa.gov/psd/data/gridded/data.20thC_ReanV2c.html";
    String source 
"20CRv2c 2014, Ensemble Kalman Filter, ocean (specified): SODAsi.2c; 
atmosphere: NCEP GFS2008ex; sea ice (specified): COBE-SST2 sea ice; 
land: Noah; version 2";
    String sourceUrl "https://www.esrl.noaa.gov/psd/thredds/dodsC/Datasets/20thC_ReanV2c/Derived/Dailies/gaussian/monolevel/tmax.2m.day.ltm.nc";
    Float64 Southernmost_Northing -88.542;
    String standard_name_vocabulary "CF Standard Name Table v55";
    String summary 
"daily 4x Daily NOAA-Cooperative Institute for Research in Environmental Sciences (CIRES) 20th Century Reanalysis V2c. Data is from 
NOAA-CIRES 20th Century Reanalysis version 2c
(4x/day).  It consists of most variables interpolated to
pressure surfaces from model (sigma) surfaces.";
    String time_coverage_end "0001-12-31T00:00:00Z";
    String time_coverage_start "0001-01-01T00:00:00Z";
    String title "daily 4x Daily NOAA-CIRES 20th Century Reanalysis V2c (Top Dataset, monolevel, tmax.2m.day.ltm), 0001";
    String version "2c";
    Float64 Westernmost_Easting 0.0;
  }
}

 

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://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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