Make A Graph

Dataset Title:	PacIOOS Water Quality Sensor Partnership Program 002: Kephara, Pohnpei, FSM
Institution:	Pacific Islands Ocean Observing System (PacIOOS) (Dataset ID: nss_wqspp_002)
Range:	longitude = 158.1129 to 158.1129°E, latitude = 6.8054 to 6.8054°N, depth = 39.5 to 39.5m, time = 2015-11-22T06:00:05Z to 2017-06-18T23:00:05Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Data Access Form

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Server-side Functions

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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 {
  time {
    UInt32 _ChunkSizes 1, 1;
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.448172005e+9, 1.497826805e+9;
    String axis "T";
    String calendar "julian";
    String coverage_content_type "coordinate";
    String ioos_category "Time";
    String long_name "Time";
    String short_name "time";
    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 6.8054, 6.8054;
    String axis "Y";
    String comment "instrument is in fixed location";
    String ioos_category "Location";
    String long_name "Latitude";
    String short_name "lat";
    String standard_name "latitude";
    String units "degrees_north";
    Float32 valid_range 6.8054, 6.8054;
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range 158.1129, 158.1129;
    String axis "X";
    String comment "instrument is in fixed location";
    String ioos_category "Location";
    String long_name "Longitude";
    String short_name "lon";
    String standard_name "longitude";
    String units "degrees_east";
    Float32 valid_range 158.1129, 158.1129;
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float32 actual_range 39.5, 39.5;
    String axis "Z";
    String comment "instrument is in fixed location";
    String ioos_category "Location";
    String long_name "Distance below mean sea level";
    String positive "down";
    String short_name "depth";
    String standard_name "depth";
    String units "m";
    Float32 valid_range 39.5, 39.5;
  }
  station_name {
    String cf_role "timeseries_id";
    String ioos_category "Identifier";
    String long_name "station";
    String short_name "station";
  }
  temperature {
    UInt32 _ChunkSizes 1, 1;
    Float32 _FillValue -999.0;
    Float32 actual_range 25.7192, 30.4919;
    String ancillary_variables "instrument1 platform1 temperature_dm_qd";
    String cell_methods "time: point longitude: point latitude: point depth: point";
    String coordinates "time latitude longitude depth";
    String coverage_content_type "physicalMeasurement";
    String grid_mapping "crs";
    String instrument "instrument1";
    String ioos_category "Temperature";
    String long_name "water temperature (processed)";
    String ncei_name "WATER TEMPERATURE";
    String observation_type "measured";
    String platform "platform1";
    String short_name "temp";
    String standard_name "sea_water_temperature";
    String units "Celsius";
    Float32 valid_range -5.0, 35.0;
  }
  salinity {
    UInt32 _ChunkSizes 1, 1;
    Float32 _FillValue -999.0;
    Float32 actual_range 33.7025, 34.9077;
    String ancillary_variables "instrument1 platform1 salinity_dm_qd";
    String cell_methods "time: point longitude: point latitude: point depth: point";
    String comment "Practical Salinity Units (PSU)";
    String coordinates "time latitude longitude depth";
    String coverage_content_type "physicalMeasurement";
    String grid_mapping "crs";
    String instrument "instrument1";
    String ioos_category "Salinity";
    String long_name "salinity PSU (processed)";
    String ncei_name "SALINITY";
    String observation_type "calculated";
    String platform "platform1";
    String short_name "salt";
    String standard_name "sea_water_practical_salinity";
    String units "1";
    Float32 valid_range 0.0, 70.0;
  }
  turbidity {
    UInt32 _ChunkSizes 1, 1;
    Float32 _FillValue -999.0;
    Float32 actual_range 0.028, 3.1825;
    String ancillary_variables "instrument1 platform1 turbidity_dm_qd";
    String cell_methods "time: point longitude: point latitude: point depth: point";
    String comment "Nephelometric Turbidity Units (NTU)";
    String coordinates "time latitude longitude depth";
    String coverage_content_type "physicalMeasurement";
    String grid_mapping "crs";
    String instrument "instrument1";
    String ioos_category "Optical Properties";
    String long_name "turbidity NTU (processed)";
    String ncei_name "TURBIDITY";
    String observation_type "calculated";
    String platform "platform1";
    String short_name "turb";
    String standard_name "sea_water_turbidity";
    String units "1";
    Float32 valid_range 0.0, 100.0;
  }
  chlorophyll {
    UInt32 _ChunkSizes 1, 1;
    Float32 _FillValue -999.0;
    Float32 actual_range -0.0156, 4.3008;
    String ancillary_variables "instrument1 platform1 chlorophyll_dm_qd";
    String cell_methods "time: point longitude: point latitude: point depth: point";
    String coordinates "time latitude longitude depth";
    String coverage_content_type "physicalMeasurement";
    String grid_mapping "crs";
    String instrument "instrument1";
    String ioos_category "Ocean Color";
    String long_name "chlorophyll (processed)";
    String ncei_name "CHLOROPHYLL A CONCENTRATION";
    String observation_type "calculated";
    String platform "platform1";
    String short_name "flor";
    String standard_name "mass_concentration_of_chlorophyll_in_sea_water";
    String units "ug/L";
    Float32 valid_range 0.0, 50.0;
  }
  temperature_raw {
    UInt32 _ChunkSizes 1, 1;
    Float32 _FillValue -999.0;
    Float32 actual_range 25.7192, 30.4919;
    String ancillary_variables "instrument1 platform1 temperature_dm_qd";
    String cell_methods "time: point longitude: point latitude: point depth: point";
    String coordinates "time latitude longitude depth";
    String coverage_content_type "physicalMeasurement";
    String grid_mapping "crs";
    String instrument "instrument1";
    String ioos_category "Temperature";
    String long_name "water temperature (raw)";
    String ncei_name "WATER TEMPERATURE";
    String observation_type "measured";
    String platform "platform1";
    String short_name "temp";
    String standard_name "sea_water_temperature";
    String units "Celsius";
    Float32 valid_range -5.0, 35.0;
  }
  temperature_dm_qd {
    UInt32 _ChunkSizes 1, 1;
    Int32 _FillValue -999;
    Int32 actual_range -9, 0;
    String flag_meanings "missing_value quality_not_evaluated failed_or_bad questionable_or_suspect passed_or_good interpolated_or_adjusted";
    Int32 flag_values -9, 0, 1, 2, 3, 4;
    String ioos_category "Quality";
    String long_name "water temperature delayed-mode quality descriptor";
    String short_name "temp_dm_qd";
    String standard_name "sea_water_temperature status_flag";
    String units "1";
    Int32 valid_range -9, 4;
  }
  salinity_raw {
    UInt32 _ChunkSizes 1, 1;
    Float32 _FillValue -999.0;
    Float32 actual_range 33.7025, 34.9077;
    String ancillary_variables "instrument1 platform1 salinity_dm_qd";
    String cell_methods "time: point longitude: point latitude: point depth: point";
    String comment "Practical Salinity Units (PSU)";
    String coordinates "time latitude longitude depth";
    String coverage_content_type "physicalMeasurement";
    String grid_mapping "crs";
    String instrument "instrument1";
    String ioos_category "Salinity";
    String long_name "salinity PSU (raw)";
    String ncei_name "SALINITY";
    String observation_type "calculated";
    String platform "platform1";
    String short_name "salt";
    String standard_name "sea_water_practical_salinity";
    String units "1";
    Float32 valid_range 0.0, 70.0;
  }
  salinity_dm_qd {
    UInt32 _ChunkSizes 1, 1;
    Int32 _FillValue -999;
    Int32 actual_range -9, 0;
    String flag_meanings "missing_value quality_not_evaluated failed_or_bad questionable_or_suspect passed_or_good interpolated_or_adjusted";
    Int32 flag_values -9, 0, 1, 2, 3, 4;
    String ioos_category "Quality";
    String long_name "salinity PSU delayed-mode quality descriptor";
    String short_name "salt_dm_qd";
    String standard_name "sea_water_practical_salinity status_flag";
    String units "1";
    Int32 valid_range -9, 4;
  }
  turbidity_raw {
    UInt32 _ChunkSizes 1, 1;
    Float32 _FillValue -999.0;
    Float32 actual_range 0.028, 3.1825;
    String ancillary_variables "instrument1 platform1 turbidity_dm_qd";
    String cell_methods "time: point longitude: point latitude: point depth: point";
    String comment "Nephelometric Turbidity Units (NTU)";
    String coordinates "time latitude longitude depth";
    String coverage_content_type "physicalMeasurement";
    String grid_mapping "crs";
    String instrument "instrument1";
    String ioos_category "Optical Properties";
    String long_name "turbidity NTU (raw)";
    String ncei_name "TURBIDITY";
    String observation_type "calculated";
    String platform "platform1";
    String short_name "turb";
    String standard_name "sea_water_turbidity";
    String units "1";
    Float32 valid_range 0.0, 100.0;
  }
  turbidity_dm_qd {
    UInt32 _ChunkSizes 1, 1;
    Int32 _FillValue -999;
    Int32 actual_range 0, 0;
    String flag_meanings "missing_value quality_not_evaluated failed_or_bad questionable_or_suspect passed_or_good interpolated_or_adjusted";
    Int32 flag_values -9, 0, 1, 2, 3, 4;
    String ioos_category "Quality";
    String long_name "turbidity NTU delayed-mode quality descriptor";
    String short_name "turb_dm_qd";
    String standard_name "sea_water_turbidity status_flag";
    String units "1";
    Int32 valid_range -9, 4;
  }
  chlorophyll_raw {
    UInt32 _ChunkSizes 1, 1;
    Float32 _FillValue -999.0;
    Float32 actual_range -0.0156, 4.3008;
    String ancillary_variables "instrument1 platform1 chlorophyll_dm_qd";
    String cell_methods "time: point longitude: point latitude: point depth: point";
    String coordinates "time latitude longitude depth";
    String coverage_content_type "physicalMeasurement";
    String grid_mapping "crs";
    String instrument "instrument1";
    String ioos_category "Ocean Color";
    String long_name "chlorophyll (raw)";
    String ncei_name "CHLOROPHYLL A CONCENTRATION";
    String observation_type "calculated";
    String platform "platform1";
    String short_name "flor";
    String standard_name "mass_concentration_of_chlorophyll_in_sea_water";
    String units "ug/L";
    Float32 valid_range 0.0, 50.0;
  }
  chlorophyll_dm_qd {
    UInt32 _ChunkSizes 1, 1;
    Int32 _FillValue -999;
    Int32 actual_range 0, 0;
    String flag_meanings "missing_value quality_not_evaluated failed_or_bad questionable_or_suspect passed_or_good interpolated_or_adjusted";
    Int32 flag_values -9, 0, 1, 2, 3, 4;
    String ioos_category "Quality";
    String long_name "chlorophyll delayed-mode quality descriptor";
    String short_name "flor_dm_qd";
    String standard_name "mass_concentration_of_chlorophyll_in_sea_water status_flag";
    String units "1";
    Int32 valid_range -9, 4;
  }
  platform1 {
    String long_name "platform";
    String ncei_code "32FS";
    String short_name "platform";
  }
  instrument1 {
    String long_name "instrument";
    String make_model "see data value";
  }
  crs {
    String epsg_code "EPSG:4326";
    String grid_mapping_name "latitude_longitude";
    Float32 inverse_flattening 298.25723;
    String long_name "coordinate reference system";
    Float32 semi_major_axis 6378137.0;
  }
 }
  NC_GLOBAL {
    String _NCProperties "version=2,netcdf=4.6.3,hdf5=1.10.2";
    String acknowledgement "The Pacific Islands Ocean Observing System (PacIOOS) is funded through the National Oceanic and Atmospheric Administration (NOAA) as a Regional Association within the U.S. Integrated Ocean Observing System (IOOS). PacIOOS is coordinated by the University of Hawaii School of Ocean and Earth Science and Technology (SOEST).";
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "station_name, longitude, latitude, depth";
    String citation "Citation to be used in publications should follow the form: \"PacIOOS. [year-of-data-download], [Title], [Data access URL], accessed [date-of-access].\"";
    String comment "Data produced by Dr. Margaret McManus (mamc@hawaii.edu).";
    String Conventions "CF-1.6, ACDD-1.3, IOOS-1.2";
    String creator_email "mamc@hawaii.edu";
    String creator_institution "University of Hawaii at Manoa";
    String creator_name "Margaret A. McManus";
    String creator_type "person";
    String creator_url "https://www.soest.hawaii.edu/oceanography/faculty/mcmanus.html";
    String data_center "Pacific Islands Ocean Observing System (PacIOOS)";
    String data_center_email "info@pacioos.org";
    String date_created "2015-11-22";
    String date_issued "2015-11-22";
    String date_metadata_modified "2022-10-27";
    String date_modified "2022-10-27";
    String defaultDataQuery "time,temperature,salinity,turbidity,chlorophyll&time>=max(time)-30days";
    String defaultGraphQuery "time,temperature&time>=max(time)-30days&.draw=lines";
    String distribution_statement "PacIOOS data may be re-used, provided that related metadata explaining the data have been reviewed by the user, and that the data are appropriately acknowledged. Data, products and services from PacIOOS are provided \"as is\" without and warranty as to fitness for a particular purpose.";
    Float64 Easternmost_Easting 158.1129;
    String featureType "TimeSeries";
    String geospatial_bounds "POINT Z (6.8054 158.1129 39.5)";
    String geospatial_bounds_crs "EPSG:4326";
    String geospatial_bounds_vertical_crs "EPSG:5829";
    Float64 geospatial_lat_max 6.8054;
    Float64 geospatial_lat_min 6.8054;
    Float32 geospatial_lat_resolution 0.0;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 158.1129;
    Float64 geospatial_lon_min 158.1129;
    Float32 geospatial_lon_resolution 0.0;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 39.5;
    Float64 geospatial_vertical_min 39.5;
    String geospatial_vertical_positive "down";
    Float32 geospatial_vertical_resolution 0.0;
    String geospatial_vertical_units "m";
    String grid_mapping_epsg_code "EPSG:4326";
    Float32 grid_mapping_inverse_flattening 298.25723;
    String grid_mapping_long_name "coordinate reference system";
    String grid_mapping_name "latitude_longitude";
    Float32 grid_mapping_semi_major_axis 6378137.0;
    String gts_ingest "false";
    String history 
"2015-11-22T06:00:05Z Deployed.
2017-06-18T23:00:05Z Decommissioned.
2022-03-29T23:47:00Z Data migrated and new ingest and processing code developed. Data reprocessed to incorporate QARTOD delayed-mode quality descriptor flags and latest IOOS standards. Dataset identifier modified and consolidated from \"pp02_agg\" (ERDDAP) and \"PP02agg\" (TDS) to \"NSS-WQSPP-002\".
2022-10-27T23:55:00Z Dataset identifier modified from \"NSS-WQSPP-002\" to \"nss_wqspp_002\" to satisfy future ERDDAP requirements.
2024-11-08T00:47:44Z http://pacioos.org
2024-11-08T00:47:44Z https://pae-paha.pacioos.hawaii.edu/tabledap/nss_wqspp_002.das";
    String id "nss_wqspp_002";
    String infoUrl "https://www.pacioos.hawaii.edu/water/sensor-kephara/";
    String institution "Pacific Islands Ocean Observing System (PacIOOS)";
    String instrument "In Situ/Laboratory Instruments > Chemical Meters/Analyzers > > > Fluorometers, In Situ/Laboratory Instruments > Conductivity Sensors, In Situ/Laboratory Instruments > Photon/Optical Detectors > > > Turbidity Meters, In Situ/Laboratory Instruments > Profilers/Sounders > > > CTD, In Situ/Laboratory Instruments > Temperature/Humidity Sensors > > > Temperature Sensors";
    String instrument_vocabulary "GCMD Instrument Keywords";
    String ioos_ingest "true";
    String ISO_Topic_Categories "oceans, environment";
    String keywords "Earth Science > Oceans > Ocean Chemistry > Chlorophyll, Earth Science > Oceans > Ocean Optics > Turbidity, Earth Science > Oceans > Ocean Temperature > Water Temperature, Earth Science > Oceans > Salinity/Density > Salinity, Earth Science > Oceans > Water Quality";
    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, University of Hawaii, PacIOOS, NOAA, State of Hawaii 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 local_time_zone 11;
    String locations "Ocean > Pacific Ocean > Western Pacific Ocean > Micronesia > Federated States of Micronesia > FSM, Ocean > Pacific Ocean > Western Pacific Ocean > Micronesia > Federated States of Micronesia > Kephara, Ocean > Pacific Ocean > Western Pacific Ocean > Micronesia > Federated States of Micronesia > Pohnpei";
    String locations_vocabulary "GCMD Location Keywords";
    String metadata_link "https://www.pacioos.hawaii.edu/metadata/nss_wqspp_002.html";
    String naming_authority "org.pacioos";
    String ncei_template_version "NCEI_NetCDF_TimeSeries_Incomplete_Template_v2.0";
    Float64 Northernmost_Northing 6.8054;
    String platform "In Situ Ocean-based Platforms > OCEAN PLATFORM/OCEAN STATIONS";
    String platform_code "nss_wqspp_002";
    String platform_vocabulary "GCMD Platform Keywords";
    String processing_level "near real-time (nrt) and possibly delayed mode (dm)";
    String product_version "1.0";
    String program "Pacific Islands Ocean Observing System (PacIOOS)";
    String project "Pacific Islands Ocean Observing System (PacIOOS)";
    String publisher_email "info@pacioos.org";
    String publisher_institution "Pacific Islands Ocean Observing System (PacIOOS)";
    String publisher_name "Pacific Islands Ocean Observing System (PacIOOS)";
    String publisher_type "institution";
    String publisher_url "http://www.pacioos.hawaii.edu";
    String sea_name "North Pacific Ocean";
    String source "in-situ measurement of water properties";
    String sourceUrl "http://pacioos.org";
    Float64 Southernmost_Northing 6.8054;
    String standard_name_vocabulary "CF Standard Name Table v71";
    String subsetVariables "temperature_dm_qd, salinity_dm_qd, chlorophyll_dm_qd, turbidity_dm_qd, instrument1";
    String summary "The nearshore sensors are part of the Pacific Islands Ocean Observing System (PacIOOS) and are designed to measure a variety of ocean parameters at fixed point locations. The PacIOOS Water Quality Sensor Partnership Program (WQSPP) supports scientists and natural resource managers to collect water quality data in order to inform research, conservation, planning, and resource management projects in the U.S. Insular Pacific region. Comprised of a network of \"roving\" water quality nearshore sensors, the WQSPP provides participating partners with sensors, data management, and technical capacity-building to allow for robust data collection. nss_wqspp_002 was located approximately 1 km north of Kephara Island and 75 meters offshore of the barrier reef along the southwest shore of Pohnpei in the Federated States of Micronesia (FSM). The sensor package was mounted to the sea floor at approximately 40 meters depth. Data were recorded hourly. Dr. Kevin Rhodes of the Micronesia Islands Nature Alliance (MINA) deployed this nearshore sensor within the Kephara Marine Sanctuary near Kephara Island and Black Coral Island to examine environmental parameters in association with grouper (Epinephelidae) spawning aggregations. Water temperature measurements collected by the sensor also served to monitor and reveal triggers for coral bleaching events.";
    String time_coverage_end "2017-06-18T23:00:05Z";
    String time_coverage_resolution "PT1H";
    String time_coverage_start "2015-11-22T06:00:05Z";
    String title "PacIOOS Water Quality Sensor Partnership Program 002: Kephara, Pohnpei, FSM";
    String uuid "org.pacioos.nss_wqspp_002";
    Float64 Westernmost_Easting 158.1129;
  }
}

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.