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Dataset Title: | 4x daily NMC reanalysis (sigma, div) |
Institution: | NOAA NCEP, NCAR (Dataset ID: noaa_pmel_6ecc_9aa0_d7b4) |
Information: | Summary | License | FGDC | ISO 19115 | Metadata | Background | Data Access Form |
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Attributes { time { String _CoordinateAxisType "Time"; Float64 actual_range -6.21357696e+10, 1.0045728e+9; String avg_period "0029-00-00 00:00:00"; String axis "T"; String delta_t "0000-01-00 00:00:00"; String ioos_category "Time"; String long_name "Time"; Float64 ltm_range 1.7242392e+7, 1.749588e+7; String standard_name "time"; String time_origin "01-JAN-1970 00:00:00"; String units "seconds since 1970-01-01T00:00:00Z"; } level { Float32 actual_range 0.995, 0.2101; String axis "Z"; String ioos_category "Location"; String long_name "Sigma"; String positive "down"; String units "sigma_level"; } latitude { String _CoordinateAxisType "Lat"; Float32 actual_range 88.542, -88.542; 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 0.0, 358.125; String axis "X"; String ioos_category "Location"; String long_name "Longitude"; String standard_name "longitude"; String units "degrees_east"; } div { String _CoordinateAxes "time level lat lon"; Float32 actual_range -5.294705E-5, 5.691834E-5; Float64 colorBarMaximum 1.0e-4; Float64 colorBarMinimum -1.0e-4; String dataset "CDC Derived NCEP Reanalysis Products"; String drawLandMask "under"; String ioos_category "Time"; Int16 least_significant_digit 3; String level_desc "Multiple Level"; String long_name "Monthly Longterm Mean of Divergence"; Float32 missing_value -9.96921E36; String parent_stat "Individual Obs"; Int16 precision 3; String statistic "Mean"; String units "1./s"; Int32 valid_range -99999, 99999; String var_desc "Divergence"; } NC_GLOBAL { String cdm_data_type "Grid"; String Conventions "COARDS, CF-1.6, Unidata Dataset Discovery v1.0"; String creator_email "Wesley.Ebisuzaki@noaa.gov"; String creator_name "NOAA NCEP, NCAR"; String creator_url "http://www.cpc.ncep.noaa.gov/products/wesley/reanalysis.html"; String description "Data is from NCEP initialized reanalysis (4x/day). It consists of T62 variables interpolated to pressure surfaces from model (sigma) surfaces."; Float64 Easternmost_Easting 358.125; 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 "/home/hoop/.crdc/cpreanjuke2farm/cpreanjuke2farm Wed Oct 25 07:57:17 1995 from div.sfc.gauss.85.nc created 95/03/13 by Hoop (netCDF2.3) 2013-02-28T12:34:51Z http://ferret.pmel.noaa.gov/geoide/dodsC/Datasets/ncep.reanalysis.derived/sigma/div_aggregation 2013-02-28T12:34:51Z http://upwell.pfeg.noaa.gov/griddap/noaa_pmel_6ecc_9aa0_d7b4.das"; String infoUrl "http://ferret.pmel.noaa.gov/geoide/dodsC/Datasets/ncep.reanalysis.derived/sigma/div_aggregation.html"; String institution "NOAA NCEP, NCAR"; String keywords "daily, div, divergence, longterm, mean, monthly, ncar, ncep, nmc, noaa, reanalysis, sigma, time"; 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 Metadata_Conventions "COARDS, CF-1.6, Unidata Dataset Discovery v1.0"; Float64 Northernmost_Northing 88.542; String platform "Model"; String references "http://www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.derived.html"; String sourceUrl "http://ferret.pmel.noaa.gov/geoide/dodsC/Datasets/ncep.reanalysis.derived/sigma/div_aggregation"; Float64 Southernmost_Northing -88.542; String standard_name_vocabulary "CF-12"; String summary "Data is from NCEP initialized reanalysis (4x/day). It consists of T62 variables interpolated to pressure surfaces from model (sigma) surfaces."; String time_coverage_end "2001-11-01T00:00:00Z"; String time_coverage_start "0001-01-01T00:00:00Z"; String title "4x daily NMC reanalysis (sigma, div)"; Float64 Westernmost_Easting 0.0; } }
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
http://upwell.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
http://upwell.pfeg.noaa.gov/erddap/griddap/erdBAssta5day.htmlTable?sst[(2007-10-21T00:00:00)][0][(-75):100:(75)][(180):100:(360)]
Thus, the query is often a variable name (e.g., sst),
followed by a set of [] for each of the variable's dimensions
(for example, [time][altitude][latitude][longitude]),
with your desired (start):stride:(stop) values within each [].
For details, see the griddap Documentation.