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ERDDAP > griddap > Make A Graph ?

Dataset Title:  GMI (GPM Microwave Imager) daily products Subscribe RSS
Institution:  NOAA   (Dataset ID: RSS_GMI_AOML)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Data Access Form
 
Graph Type:  ?
X Axis:  ?
Y Axis:  ?
Color:  ?
 
Dimensions ?    Start ?    Stop ?
time (UTC) ?     specify just 1 value →
    << -
< <
latitude (degrees_north) ?
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    -
< slider >
longitude (degrees_east) ?
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    -
< slider >
 
Graph Settings
Color Bar:   Continuity:   Scale: 
   Minimum:   Maximum:   N Sections: 
Draw land mask: 
Y Axis Minimum:   Maximum:   Ascending: 
 
(Please be patient. It may take a while to get the data.)
 
Optional:
Then set the File Type: (File Type information)
and
or view the URL:
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    Click on the map to specify a new center point. ?
Zoom:
[The graph you specified. Please be patient.]

 

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 524288;
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.6095024e+9, 1.7116272e+9;
    String axis "T";
    String calendar "Gregorian";
    String CoordinateAxisType "Time";
    String ioos_category "Time";
    String long_name "Reference Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  latitude {
    Int32 _ChunkSizes 720;
    String _CoordinateAxisType "Lat";
    Float64 actual_range -89.875, 89.875;
    String axis "Y";
    String CoordinateAxisType "Lat";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    Int32 _ChunkSizes 1440;
    String _CoordinateAxisType "Lon";
    Float64 actual_range -179.875, 179.875;
    String axis "X";
    String CoordinateAxisType "Lon";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  Time_Ascending {
    Int32 _ChunkSizes 1, 720, 1440;
    Float32 _FillValue NaN;
    Float32 actual_range 0.3, 23.9;
    Float64 colorBarMaximum 24.0;
    Float64 colorBarMinimum 0.0;
    String coordsys "geographic";
    String ioos_category "Time";
    String long_name "Decimal Hour of the Day, Ascending Passes";
    String standard_name "not defined";
    String units "hour";
    String variable_info "Hour of the Day, Ascending Passes";
  }
  GMI_SST_Ascending {
    Int32 _ChunkSizes 1, 720, 1440;
    Float32 _FillValue NaN;
    Float32 actual_range -3.0, 33.75;
    Float64 colorBarMaximum 34.5;
    Float64 colorBarMinimum -3.0;
    String coordsys "geographic";
    String ioos_category "Temperature";
    String long_name "GMI Sea Surface Temperature, Ascending Passes";
    String standard_name "sea_surface_temperature";
    String units "degree_C";
    String variable_info "GMI Sea Surface Temperature, Ascending Passes";
  }
  WSPD_LF_Ascending {
    Int32 _ChunkSizes 1, 720, 1440;
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 30.8;
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String coordsys "geographic";
    String ioos_category "Wind";
    String long_name "Surface Wind Speed, Low Frequency, Ascending Passes";
    String standard_name "wind";
    String units "m s-1";
    String variable_info "10-meter Surface Wind Speed, Low Frequency, Ascending Passes";
  }
  WSPD_MF_Ascending {
    Int32 _ChunkSizes 1, 720, 1440;
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 27.8;
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String coordsys "geographic";
    String ioos_category "Wind";
    String long_name "Surface Wind Speed, Medium Frequency, Ascending Passes";
    String standard_name "wind";
    String units "m s-1";
    String variable_info "10-meter Surface Wind Speed, Medium Frequency, Ascending Passes";
  }
  Water_Vapor_Ascending {
    Int32 _ChunkSizes 1, 720, 1440;
    Float32 _FillValue NaN;
    Float32 actual_range 1.8, 75.0;
    Float64 colorBarMaximum 75.0;
    Float64 colorBarMinimum 0.0;
    String coordsys "geographic";
    String ioos_category "Meteorology";
    String long_name "Atmospheric Water Vapor, Ascending Passes";
    String standard_name "atmosphere_mass_content_of_water_vapor";
    String units "mm";
    String variable_info "Atmospheric Water Vapor, Ascending Passes";
  }
  Cloud_LW_Ascending {
    Int32 _ChunkSizes 1, 720, 1440;
    Float32 _FillValue NaN;
    Float32 actual_range -0.05, 1.66;
    Float64 colorBarMaximum 2.45;
    Float64 colorBarMinimum -0.05;
    String coordsys "geographic";
    String ioos_category "Meteorology";
    String long_name "Cloud Liquid Water, Ascending Passes";
    String standard_name "atmosphere_mass_content_of_cloud_liquid_water";
    String units "mm";
    String variable_info "Cloud Liquid Water, Ascending Passes";
  }
  Rain_Rate_Ascending {
    Int32 _ChunkSizes 1, 720, 1440;
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 25.0;
    Float64 colorBarMaximum 25.0;
    Float64 colorBarMinimum 0.0;
    String coordsys "geographic";
    String ioos_category "Meteorology";
    String long_name "Rain Rate, Ascending Passes";
    String standard_name "rainfall_rate";
    String units "mm hr-1";
    String variable_info "Rain Rate, Ascending Passes";
  }
  Time_Descending {
    Int32 _ChunkSizes 1, 720, 1440;
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 23.6;
    Float64 colorBarMaximum 24.0;
    Float64 colorBarMinimum 0.0;
    String coordsys "geographic";
    String ioos_category "Time";
    String long_name "Decimal Hour of the Day, Descending Passes";
    String standard_name "not defined";
    String units "hour";
    String variable_info "Hour of the Day, Descending Passes";
  }
  GMI_SST_Descending {
    Int32 _ChunkSizes 1, 720, 1440;
    Float32 _FillValue NaN;
    Float32 actual_range -3.0, 33.75;
    Float64 colorBarMaximum 34.5;
    Float64 colorBarMinimum -3.0;
    String coordsys "geographic";
    String ioos_category "Temperature";
    String long_name "GMI Sea Surface Temperature, Descending Passes";
    String standard_name "sea_surface_temperature";
    String units "degree_C";
    String variable_info "GMI Sea Surface Temperature, Descending Passes";
  }
  WSPD_LF_Descending {
    Int32 _ChunkSizes 1, 720, 1440;
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 32.2;
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String coordsys "geographic";
    String ioos_category "Wind";
    String long_name "Surface Wind Speed, Low Frequency, Descending Passes";
    String standard_name "wind";
    String units "m s-1";
    String variable_info "10-meter Surface Wind Speed, Low Frequency, Descending Passes";
  }
  WSPD_MF_Descending {
    Int32 _ChunkSizes 1, 720, 1440;
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 37.6;
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum 0.0;
    String coordsys "geographic";
    String ioos_category "Wind";
    String long_name "Surface Wind Speed, Medium Frequency, Descending Passes";
    String standard_name "wind";
    String units "m s-1";
    String variable_info "10-meter Surface Wind Speed, Medium Frequency, Descending Passes";
  }
  Water_Vapor_Descending {
    Int32 _ChunkSizes 1, 720, 1440;
    Float32 _FillValue NaN;
    Float32 actual_range 1.2, 75.0;
    Float64 colorBarMaximum 75.0;
    Float64 colorBarMinimum 0.0;
    String coordsys "geographic";
    String ioos_category "Meteorology";
    String long_name "Atmospheric Water Vapor, Descending Passes";
    String standard_name "atmosphere_mass_content_of_water_vapor";
    String units "mm";
    String variable_info "Atmospheric Water Vapor, Descending Passes";
  }
  Cloud_LW_Descending {
    Int32 _ChunkSizes 1, 720, 1440;
    Float32 _FillValue NaN;
    Float32 actual_range -0.05, 1.78;
    Float64 colorBarMaximum 2.45;
    Float64 colorBarMinimum -0.05;
    String coordsys "geographic";
    String ioos_category "Meteorology";
    String long_name "Cloud Liquid Water, Descending Passes";
    String standard_name "atmosphere_mass_content_of_cloud_liquid_water";
    String units "mm";
    String variable_info "Cloud Liquid Water, Descending Passes";
  }
  Rain_Rate_Descending {
    Int32 _ChunkSizes 1, 720, 1440;
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 25.0;
    Float64 colorBarMaximum 25.0;
    Float64 colorBarMinimum 0.0;
    String coordsys "geographic";
    String ioos_category "Meteorology";
    String long_name "Rain Rate, Descending Passes";
    String standard_name "rainfall_rate";
    String units "mm hr-1";
    String variable_info "Rain Rate, Descending Passes";
  }
  NC_GLOBAL {
    String acknowledgement "GMI data are produced by Remote Sensing Systems and sponsored by the NASA Physical Oceanography Project.";
    String cdm_data_type "Grid";
    String contact "Joaquin.Trinanes@noaa.gov";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creator_email "Joaquin.Trinanes@noaa.gov";
    String creator_name "ATLANTIC OCEANWATCH";
    String creator_url "http://cwcgom.aoml.noaa.gov";
    Float64 Easternmost_Easting 179.875;
    Float64 geospatial_lat_max 89.875;
    Float64 geospatial_lat_min -89.875;
    Float64 geospatial_lat_resolution 0.25;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 179.875;
    Float64 geospatial_lon_min -179.875;
    Float64 geospatial_lon_resolution 0.25;
    String geospatial_lon_units "degrees_east";
    String history 
"2024-03-29T09:38:11Z https://cwcgom.aoml.noaa.gov/thredds/dodsC/GMI/GMI.nc
2024-03-29T09:38:11Z http://cwcgom.aoml.noaa.gov:8080/griddap/RSS_GMI_AOML.das";
    String infoUrl "https://cwcgom.aoml.noaa.gov/thredds/dodsC/GMI/GMI.nc.html";
    String institution "NOAA";
    String keywords "ascending, atmosphere, atmosphere_mass_content_of_cloud_liquid_water, atmosphere_mass_content_of_water_vapor, atmospheric, cloud, cloud cover, Cloud_LW_Ascending, Cloud_LW_Descending, cloudiness, clouds, content, cover, daily, data, day, decimal, defined, descending, Earth Science > Atmosphere > Atmospheric Water Vapor > Water Vapor, Earth Science > Atmosphere > Clouds > Cloud Liquid Water/Ice, Earth Science > Atmosphere > Precipitation > Precipitation Rate, Earth Science > Atmosphere > Precipitation > Rain, Earth Science > Oceans > Ocean Temperature > Sea Surface Temperature, frequency, gmi, GMI_SST_Ascending, GMI_SST_Descending, gpm, hour, ice, imager, liquid, low, mass, medium, meteorology, microwave, noaa, not, not defined, ocean, oceans, passes, precipitation, products, rain, Rain_Rate_Ascending, Rain_Rate_Descending, rainfall, rainfall_rate, rate, sea, sea_surface_temperature, seawater, speed, surface, temperature, time, Time_Ascending, vapor, water, Water_Vapor_Ascending, Water_Vapor_Descending, wind, WSPD_LF_Ascending, WSPD_LF_Descending, WSPD_MF_Ascending, WSPD_MF_Descending";
    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.";
    Int32 nco_openmp_thread_number 1;
    Float64 Northernmost_Northing 89.875;
    String source_data "Remote Sensing Systems";
    String sourceUrl "https://cwcgom.aoml.noaa.gov/thredds/dodsC/GMI/GMI.nc";
    Float64 Southernmost_Northing -89.875;
    String spatial_resolution "0.25 degrees";
    String standard_name_vocabulary "CF Standard Name Table v32";
    String summary "The daily files consist of over-ocean measurements (geophysical retrievals or parameters) mapped to a regular 0.25-degree grid complete with data gaps between orbits. Two maps exist for each parameter, one of ascending orbit segments and the other of descending orbit segments. Data on each of the segment maps are averaged where successive orbits cross and are overwritten at the seam or region where the last orbit of the day overlaps the first orbit of the day. Daily data files contain time maps consisting of the UTC observation time for each set of passes (ascending and descending).n Gridded data are organized according to observation date. All dates and times are Coordinated Universal Time (UTC), also known as Greenwich Mean Time (GMT), Zulu Time (Z), Universal Time (UT), and World Time.";
    Float64 temporal_extent 86400.0;
    String temporal_extent_unit "seconds";
    String time_coverage_end "2024-03-28T12:00:00Z";
    String time_coverage_start "2021-01-01T12:00:00Z";
    String title "GMI (GPM Microwave Imager) daily products";
    Float64 Westernmost_Easting -179.875;
  }
}

 

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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