Italian Arctic Data Center ERDDAP
Easier access to scientific data

Make A Graph

Dataset Title:	NyA_PFR
Institution:	CNR-ISP (Dataset ID: NyA_PFR)
Range:	longitude = 11.933 to 11.933°E, latitude = 78.916 to 78.916°N, time = 2002-05-01 to 2010-09-10
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Data Access Form \| Files

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Graph Type:

X Axis:

Y Axis:

Color:

Constraints

Optional
Constraint #1

Optional
Constraint #2

Server-side Functions

distinct()

Hover here to see a list of options. Click on an option to select it.

Graph Settings

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Color Bar:

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N Sections:

Draw land mask:

Y Axis Minimum:

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(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:
(Documentation / Bypass this form

)

Click on the map to specify a new center point.

Zoom:

Time range:

[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:

Web page authors can embed a graph of the latest data in a web page using HTML <img> tags.
Anyone can use ERDDAPs Slide Sorter to build a personal web page that displays graphs with the latest data (or other images or HTML content), each in its own, draggable slide.

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.0202112e+9, 1.2840768e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Date";
    String source_name "Date";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String time_precision "1970-01-01";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  time2 {
    String long_name "Time";
  }
  AOD_500nm {
    Float32 _FillValue -999.0;
    Float32 actual_range 0.0215, 99.999;
    String long_name "AOD(500nm)";
  }
  Alpha {
    Float32 actual_range -4.960262, 7.865151;
    String long_name "Alpha";
  }
  station_id {
    String actual_range 
"NyA_PFR
NyA_PFR";
    String cf_role "timeseries_id";
    String long_name "Id of the station in the TimeSeries";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 78.916, 78.916;
    String axis "Y";
    String ioos_category "Location";
    String long_name "latitude position of the station";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range 11.933, 11.933;
    String axis "X";
    String ioos_category "Location";
    String long_name "longitude position of the station";
    String standard_name "longitude";
    String units "degrees_east";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "station_id,latitude,longitude";
    String contributor_email "simone.pulimeno@unive.it";
    String contributor_institution "CNR-ISP";
    String contributor_name "Simone Pulimento";
    String Conventions "COARDS, CF-1.10, ACDD-1.3";
    String creator_email "simone.pulimeno@unive.it";
    String creator_name "CNR-ISP";
    String creator_url "https://iadc.cnr.it";
    Float64 Easternmost_Easting 11.933;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 78.916;
    Float64 geospatial_lat_min 78.916;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 11.933;
    Float64 geospatial_lon_min 11.933;
    String geospatial_lon_units "degrees_east";
    String history 
"Aerosol Optical Depth (AOD) measured by the NOrwegian Institute for Air Research (NILU) at Ny-Alesund between 2002 and 2010
2024-09-08T02:49:51Z (local files)
2024-09-08T02:49:51Z https://data.iadc.cnr.it/tabledap/NyA_PFR.das";
    String infoUrl "https://iadc.cnr.it";
    String institution "CNR-ISP";
    String keywords "500nm, aerosol, alpha, aod, AOD_500nm, council, data, date, depth, institute, italian, national, nya, optical, pfr, polar, research, sciences, time, time2";
    String license "CC BY-NC: This license allows reusers to distribute, remix, adapt, and build upon the material in any medium or format for noncommercial purposes only, and only so long as attribution is given to the creator.";
    Float64 Northernmost_Northing 78.916;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 78.916;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "time2";
    String summary "Aerosol Optical Depth (AOD) measured by the NOrwegian Institute for Air Research (NILU) at Ny-Alesund between 2002 and 2010 by using a Precision Filter Radiometer (PFR). AOD is provided at 500 nm and alpha in the spectral range (nm) 411.9-862.5.";
    String time_coverage_end "2010-09-10";
    String time_coverage_start "2002-05-01";
    String title "NyA_PFR";
    Float64 Westernmost_Easting 11.933;
  }
}

Using tabledap to Request Data and Graphs from Tabular Datasets

tabledap lets you request a data subset, a graph, or a map from a tabular dataset (for example, buoy data), via a specially formed URL. tabledap uses the OPeNDAP (external link)

Data Access Protocol (DAP) (external link)

and its selection 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 or Subset form. They make 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.

Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names, followed by a collection of constraints (e.g., variable<value), each preceded by '&' (which is interpreted as "AND").

For details, see the tabledap Documentation.

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