Easy Access to PMEL Scientific Data
The Pacific Marine Environmental Laboratory's ERDDAP data server for public access to scientific data

NOAA OAR PMEL

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Dataset Title:	PMEL Atmospheric Chemistry ACEASIA Experiment Irregular 3 data
Institution:	PMEL Atmospheric Chemistry (Dataset ID: IrregularTime3_5ff3_35a5_3813)
Range:	longitude = -174.325 to 173.244°E, latitude = 30.503 to 36.062°N, time = 2001-03-17T18:36:00Z to 2001-04-07T05:24:00Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Data Access Form

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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:

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 {
  traj {
    Float64 actual_range 1.0, 1.0;
    String axis "E";
    String long_name "Traj";
    String point_spacing "even";
  }
  id {
    String cf_role "trajectory_id";
    String long_name "trajectory id";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 9.848541600000001e+8, 9.866210399999999e+8;
    String axis "T";
    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";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 _FillValue -1.0e+34;
    Float32 actual_range -174.325, 173.244;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    Int32 epic_code 502;
    String FORTRAN_format "f10.4";
    Float32 gap_value -999.0;
    String generic_name "lon";
    String history "From ACEASIA_dms_air_v11_copy";
    String instr_id "GPS";
    String ioos_category "Location";
    String long_name "Longitude";
    Float32 max_value 360.0;
    Float32 min_value -180.0;
    Float32 missing_value -1.0e+34;
    String name "LON";
    String plot_lab "LONGT";
    String standard_name "longitude";
    String units "degrees_east";
  }
  lon360 {
    Float32 _FillValue -1.0e+34;
    Float32 actual_range 127.732, 196.03;
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String history "From ACEASIA_dms_air_v11_copy";
    String long_name "longitude 360";
    Float32 missing_value -1.0e+34;
    String standard_name "longitude";
    String units "degrees_east";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 _FillValue -1.0e+34;
    Float32 actual_range 30.503, 36.062;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    Int32 epic_code 500;
    String FORTRAN_format "f10.4";
    Float32 gap_value -999.0;
    String generic_name "lat";
    String history "From ACEASIA_dms_air_v11_copy";
    String instr_id "GPS";
    String ioos_category "Location";
    String long_name "Latitude";
    Float32 max_value 90.0;
    Float32 min_value -90.0;
    Float32 missing_value -1.0e+34;
    String name "LAT";
    String plot_lab "LAT";
    String standard_name "latitude";
    String units "degrees_north";
  }
  DUR_628 {
    Float32 _FillValue -1.0e+34;
    Float32 actual_range 8.0, 8.0;
    Int32 epic_code 628;
    Float32 gap_value -999.0;
    String history "From ACEASIA_dms_air_v11_copy";
    String instr_id "*";
    String long_name "Sample Duration";
    Float32 max_value 59.0;
    Float32 min_value 0.0;
    Float32 missing_value -1.0e+34;
    String name "DUR";
    String plot_lab "Duration";
    String units "min";
  }
  TIM_627 {
    Float32 _FillValue -1.0e+34;
    Float32 actual_range 76.7778, 97.2278;
    Int32 epic_code 627;
    Float32 gap_value -999.0;
    String generic_name "time";
    String history "From ACEASIA_dms_air_v11_copy";
    String instr_id "*";
    String long_name "Julian Days";
    Float32 max_value 365.9999;
    Float32 min_value 1.0;
    Float32 missing_value -1.0e+34;
    String name "TIM";
    String plot_lab "DayOfYear";
  }
  DMSa_1808 {
    Float32 _FillValue -1.0e+34;
    Float32 actual_range 2.0, 195.0;
    Int32 epic_code 1808;
    Float32 gap_value -99.0;
    String generic_name "dms";
    String history "From ACEASIA_dms_air_v11_copy";
    String instr_id "PMEL DMS system";
    String long_name "DMSair";
    Float32 max_value 1000.0;
    Float32 min_value 0.0;
    Float32 missing_value -1.0e+34;
    String name "DMSa";
    String plot_lab "DMSair";
    String units "ppt";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Trajectory";
    String cdm_trajectory_variables "traj, id";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String creation_date "13:44 27-FEB-02";
    String creator_email "pmel.info@noaa.gov";
    String creator_name "PMEL Atmospheric Chemistry";
    String creator_url "https://www.pmel.noaa.gov/";
    String DATA_TYPE "TIMESERIES-1D";
    Float64 Easternmost_Easting 173.244;
    String featureType "Trajectory";
    String FILE_START_TIME "2001 03 17 18 43";
    String FILE_STOP_TIME "2001 04 07 06 49";
    Float64 geospatial_lat_max 36.062;
    Float64 geospatial_lat_min 30.503;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 173.244;
    Float64 geospatial_lon_min -174.325;
    String geospatial_lon_units "degrees_east";
    String history 
"FERRET V7.01 (optimized) 23-Aug-16
2024-12-10T11:18:23Z (local files)
2024-12-10T11:18:23Z https://data.pmel.noaa.gov/pmel/tabledap/IrregularTime3_5ff3_35a5_3813.das";
    String infoUrl "http://saga.pmel.noaa.gov/";
    String institution "PMEL Atmospheric Chemistry";
    String keywords "aerosol, asian, atmospheric, characterization, chemistry, data, days, DMSa_1808, dmsair, DUR_628, duration, environmental, experiment, irregular, julian, laboratory, latitude, lon360, longitude, marine, noaa, pacific, pmel, regional, sample, TIM_627, time, traj, trajectory";
    String license "These data were produced by NOAA and are not subject to copyright protection in the United States. NOAA waives any potential copyright and related rights in these data worldwide through the Creative Commons Zero 1.0 Universal Public Domain Dedication (CC0-1.0).";
    Float64 Northernmost_Northing 36.062;
    String PLATFORM "RONALD_H_BROWN";
    String PROJECT "ACEASIA";
    String REMARK_01 "Atmospheric Dimethy Sulfide data from R/V RONALD H. BROWN during ACE ASIA";
    String REMARK_02 "discrete samples -- no averaging";
    String REMARK_03 "Version 1.1:  corrected sample from 1 minute to the correct value";
    String REMARK_04 "of 8 minutes.";
    String source "Jim Johnson/NOAA-PMEL johnson@pmel.noaa.gov";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 30.503;
    String standard_name_vocabulary "CF Standard Name Table v29";
    String SUBMIT_DATE "27-FEB-2002";
    String subsetVariables "traj, id";
    String summary "Pacific Marine Environmental Laboratory (PMEL) Atmospheric Chemistry Asian Pacific Regional Aerosol Characterization Experiment Irregular 3 data";
    String time_coverage_end "2001-04-07T05:24:00Z";
    String time_coverage_start "2001-03-17T18:36:00Z";
    String TIME_PAR "year month day hour minute";
    String title "PMEL Atmospheric Chemistry ACEASIA Experiment Irregular 3 data";
    String version "1.1";
    Float64 Westernmost_Easting -174.325;
  }
}

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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