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Dataset Title:  Maui Citizen Science Coastal Water Quality Data Subscribe RSS
Institution:  Coral Reef Alliance (CORAL)   (Dataset ID: maui_water_quality)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Make a graph
 
Variable ?   Optional
Constraint #1 ?
Optional
Constraint #2 ?
   Minimum ?
 
   Maximum ?
 
 time (UTC) ?          2010-01-29T21:14:00Z    
  < slider >
 longitude (degrees_east) ?          -156.6664    -156.4375
  < slider >
 latitude (degrees_north) ?          20.61845    20.9995
  < slider >
 location_id ?              
 location_name ?              
 report_id ?              
 number_concentration_of_enterococcus_in_sea_water (CFU/100-milliliters) ?              
 air_temperature (Celsius) ?              
 sea_water_temperature (Celsius) ?              
 sea_water_salinity (salinity, PSU) ?              
 sea_water_turbidity (turbidity, NTU) ?              
 sea_water_ph_reported_on_total_scale (pH) ?              
 
Server-side Functions ?
 distinct() ?
? (" ")

File type: (more info)

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.26479964e+9, NaN;
    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 actual_range -156.6664, -156.4375;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 20.61845, 20.9995;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  location_id {
    String ioos_category "Identifier";
    String long_name "identifier for this sampling location";
  }
  location_name {
    String ioos_category "Location";
    String long_name "location name";
  }
  report_id {
    String ioos_category "Identifier";
    String long_name "Coral Reef Monitoring Data Portal survey report identifier";
  }
  number_concentration_of_enterococcus_in_sea_water {
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Pathogens";
    String long_name "Enterococcus";
    String standard_name "number_concentration_of_enterococcus_in_sea_water";
    String units "CFU/100-milliliters";
  }
  air_temperature {
    Float64 colorBarMaximum 31.0;
    Float64 colorBarMinimum 21.0;
    String ioos_category "Temperature";
    String long_name "air temperature";
    String standard_name "air_temperature";
    String units "Celsius";
  }
  sea_water_temperature {
    Float64 colorBarMaximum 31.0;
    Float64 colorBarMinimum 11.0;
    String ioos_category "Temperature";
    String long_name "water temperature";
    String standard_name "sea_water_temperature";
    String units "Celsius";
  }
  sea_water_salinity {
    Float64 colorBarMaximum 40.0;
    Float64 colorBarMinimum 10.0;
    String ioos_category "Salinity";
    String long_name "salinity";
    String standard_name "sea_water_salinity";
    String units "PSU";
  }
  sea_water_turbidity {
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Optical Properties";
    String long_name "turbidity";
    String standard_name "sea_water_turbidity";
    String units "NTU";
  }
  sea_water_ph_reported_on_total_scale {
    Float64 colorBarMaximum 9.0;
    Float64 colorBarMinimum 7.0;
    String ioos_category "Other";
    String long_name "pH";
    String standard_name "sea_water_ph_reported_on_total_scale";
    String units "pH";
  }
 }
  NC_GLOBAL {
    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). This dataset is managed through an online repository, the Coral Reef Monitoring Data Portal (http://monitoring.coral.org), developed and coordinated by the Coral Reef Alliance (CORAL) and its partners with funding provided by the Hawaii Tourism Authority (HTA) and the National Oceanic and Atmospheric Administration (NOAA). Data collection is coordinated by the Hawaii Division of Aquatic Resources (DAR), the Hawaiian Islands Humpback Whale National Marine Sanctuary (HIHWNMS), Aquanimity Now, the Digital Bus, Save Honolua Coalition, Project S.E.A.-Link, and other local organizations and agencies. Data are publicly distributed by the Pacific Islands Ocean Observing System (PacIOOS).";
    String cdm_data_type "Point";
    String comment "Only a subset of sampling sites with consistent location names and frequent measurements have been ingested from the Coral Reef Monitoring Data Portal.";
    String contributor_name "John Maurer";
    String contributor_role "distributor";
    String Conventions "CF-1.6, ACDD-1.3";
    String creator_email "monitoring@coral.org";
    String creator_institution "Coral Reef Alliance (CORAL)";
    String creator_name "Coral Reef Alliance (CORAL)";
    String creator_type "institution";
    String creator_url "http://monitoring.coral.org";
    String date_created "2014-04-09";
    String date_issued "2014-04-09";
    String date_metadata_modified "2014-04-09";
    String date_modified "2014-04-09";
    String defaultDataQuery "&time>=now-1year";
    String defaultGraphQuery "longitude,latitude,sea_water_temperature&time>=now-1year&.draw=markers";
    Float64 Easternmost_Easting -156.4375;
    String featureType "Point";
    String geospatial_bounds "POLYGON ((20.5241 -156.7172, 21.0736 -156.7172, 21.0736 -155.9193, 20.5241 -155.9193, 20.5241 -156.7172))";
    String geospatial_bounds_crs "EPSG:4326";
    Float64 geospatial_lat_max 20.9995;
    Float64 geospatial_lat_min 20.61845;
    Float64 geospatial_lat_resolution 0.0;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -156.4375;
    Float64 geospatial_lon_min -156.6664;
    Float64 geospatial_lon_resolution 0.0;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 0.0;
    Float64 geospatial_vertical_min 0.0;
    String geospatial_vertical_positive "up";
    Float64 geospatial_vertical_resolution 0.0;
    String geospatial_vertical_units "meters";
    String history 
"PacIOOS began ingesting from Coral Reef Alliance (CORAL) Coral Reef Monitoring Data Portal into PacIOOS ERDDAP data server (04/2014)
2018-10-17T08:12:00Z (source database)
2018-10-17T08:12:00Z http://oos.soest.hawaii.edu/erddap/tabledap/maui_water_quality.html";
    String id "maui_water_quality";
    String infoUrl "http://monitoring.coral.org";
    String institution "Coral Reef Alliance (CORAL)";
    String instrument "In Situ/Laboratory Instruments > Chemical Meters/Analyzers > > > pH Meters, In Situ/Laboratory Instruments > Conductivity Sensors, In Situ/Laboratory Instruments > Photon/Optical Detectors > > > Turbidity Meters, In Situ/Laboratory Instruments > Samplers > Bottles/Flasks/Jars, In Situ/Laboratory Instruments > Temperature/Humidity Sensors > > > Temperature Sensors";
    String instrument_vocabulary "GCMD Instrument Keywords";
    String ISO_Topic_Categories "climatologyMeteorologyAtmosphere, environment, health, oceans";
    String keyword_vocabulary "GCMD Science Keywords";
    String keywords "Earth Science > Atmosphere > Atmospheric Temperature > Surface Air Temperature, Earth Science > Oceans > Ocean Chemistry > Oxygen, Earth Science > Oceans > Ocean Chemistry > pH, Earth Science > Oceans > Ocean Optics > Turbidity, Earth Science > Oceans > Ocean Temperature > Water Temperature, Earth Science > Oceans > Salinity/Density > Salinity, Earth Science > Oceans > Water Quality, Earth Science > Oceans > Water Quality > Ocean Contaminants";
    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.";
    String locations "Continent > North America > United States Of America > Hawaii, Ocean > Pacific Ocean > Central Pacific Ocean > Hawaiian Islands > Maui";
    String locations_vocabulary "GCMD Location Keywords";
    String Metadata_Link "http://www.pacioos.hawaii.edu/metadata/maui_water_quality.html";
    String naming_authority "org.pacioos";
    Float64 Northernmost_Northing 20.9995;
    String platform "In Situ Land-based Platforms > Ocean Platform/Ocean Stations > Coastal Stations";
    String platform_vocabulary "GCMD Platform Keywords";
    String processing_level "Some quality control during automated ingest from Coral Reef Monitoring Data Portal to check for reasonable data ranges and units of measure for some measurement variables.";
    String program "Coral Reef Alliance (CORAL)";
    String project "Coral Reef Alliance (CORAL)";
    String publisher_email "info@pacioos.org";
    String publisher_institution "University of Hawaii";
    String publisher_name "Pacific Islands Ocean Observing System (PacIOOS)";
    String publisher_type "group";
    String publisher_url "http://www.pacioos.hawaii.edu";
    String reference "http://monitoring.coral.org";
    String source "in situ measurements and water samples";
    String sourceUrl "(source database)";
    Float64 Southernmost_Northing 20.61845;
    String standard_name_vocabulary "CF Standard Name Table v39";
    String summary 
"A network of citizen science volunteers periodically monitors water quality at several beaches across the island of Maui in the State of Hawaii. This community-based monitoring effort provides valuable data for resource management purposes. Informed volunteer networks can serve as a community's \"eyes and ears\" and will often provide the first indications of changes to a system. In addition to the value of early detection, it is important to maintain ongoing monitoring efforts to compile data and document resource conditions.

In addition to water temperature, salinity, turbidity (water clarity), and pH, sampling sites are also monitored for harmful bacteria levels of Enterococcus. This indicator bacteria has been correlated with the presence of human pathogens (disease-causing organisms) and therefore with human illnesses such as gastroenteritis, diarrhea, and various infections in epidemiological studies. As such, it is commonly measured in beach water quality monitoring programs. For reference, the U.S. Environmental Protection Agency (EPA) 1986 Ambient Water Quality Criteria for Bacteria recommends that a water quality alert is posted if either: (a.) the latest water sample exceeds 104 CFU/100 mL of Enterococcus, or (b.) the geometric mean of the past 30 days of water samples exceeds 35 CFU/100 mL.  One of the limitations of all available and EPA-approved test methods is that the sample must be incubated for about 24 hours. 

Data are managed through an online repository, the Coral Reef Monitoring Data Portal (http://monitoring.coral.org), developed and coordinated by the Coral Reef Alliance (CORAL) and its partners with funding provided by the Hawaii Tourism Authority (HTA) and the National Oceanic and Atmospheric Administration (NOAA). Data collection is coordinated by the Hawaii Division of Aquatic Resources (DAR), the Hawaiian Islands Humpback Whale National Marine Sanctuary (HIHWNMS), Aquanimity Now, the Digital Bus, Save Honolua Coalition, Project S.E.A.-Link, and other local organizations and agencies. Data are publicly distributed by the Pacific Islands Ocean Observing System (PacIOOS).";
    String time_coverage_start "2010-01-29T21:14:00Z";
    String title "Maui Citizen Science Coastal Water Quality Data";
    Float64 Westernmost_Easting -156.6664;
  }
}

 

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.

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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