Make A Graph

Dataset Title:	CalCOFI SIO Hydrographic Cast Data
Institution:	UCSD SIO (Dataset ID: siocalcofiHydroCast)
Range:	longitude = -164.083 to -105.967°E, latitude = 18.417 to 47.917°N, time = 1949-02-28T22:42:00Z to 2021-05-13T20:37:00Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Data Access Form \| Files

To work correctly, this web page requires that JavaScript be enabled in your browser. Please:
1) Enable JavaScript in your browser:
      • Chrome: "Settings : Advanced : Privacy and security : Site Settings : JavaScript"
      • Firefox: (it should be always on!)"
      • Opera: "Settings : Websites : JavaScript"
      • Safari: "Safari : Preferences : Security : Enable JavaScript"
2) Reload this web page.

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

Marker Type:

Size:

Color:

Color Bar:

Continuity:

Scale:

Minimum:

Maximum:

N Sections:

Draw land mask:

Y Axis Minimum:

Maximum:

(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:

[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 -6.5759508e+8, 1.62093822e+9;
    String axis "T";
    String description "Cast Time UTC";
    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";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 18.417, 47.917;
    String axis "Y";
    String description "Observed Latitude in decimal degrees";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -164.083, -105.967;
    String axis "X";
    String description "Observed Longitude in decimal degrees";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  cst_cnt {
    Int32 actual_range 1, 35644;
    String description "Cast Count - All CalCOFI casts ever conducted, consecutively numbered";
    String ioos_category "Identifier";
    String long_name "Cast Count";
  }
  cruise_id {
    String description "Cruise identifier [Year]-[Month]-[Day]-C-[Ship Code]";
    String ioos_category "Identifier";
    String long_name "Cruise ID";
  }
  cruise {
    String description "Cruise Name [Year][Month]";
    String ioos_category "Identifier";
    String long_name "Cruise";
  }
  cruz_sta {
    String description "Cruise Name and Station [Year][Month][Line][Station]";
    String ioos_category "Identifier";
    String long_name "Cruise ID";
  }
  dbsta_id {
    String description "Line and Station";
    String ioos_category "Identifier";
    String long_name "CalCOFI Line and Station";
  }
  cast_id {
    String description "Cast Identifier [Century] - [YY][MM][ShipCode] - [CastType][Julian Day] - [CastTime]-[Line][Sta]";
    String ioos_category "Identifier";
    String long_name "Cast Id";
  }
  sta_id {
    String description "Line and Station";
    String ioos_category "Identifier";
    String long_name "Line and Station";
  }
  quarter {
    Int32 actual_range 1, 4;
    String description "Quarter of the year";
    String ioos_category "Time";
    String long_name "Quarter of Year";
  }
  sta_code {
    String description "Station Designation (See Station_ID and 0-St_Code for codes)";
    String ioos_category "Identifier";
    String long_name "Station";
  }
  distance {
    Float32 actual_range -1920.15, -0.141;
    String description "Nautical miles from coast intercept, calculated from estimated latitude and longitude";
    String ioos_category "Location";
    String long_name "Distance from shore";
    String units "nautical miles";
  }
  date {
    String description "Date (Month Day Year)";
    String ioos_category "Time";
    String long_name "Date";
  }
  year {
    Int32 actual_range 1949, 2021;
    String description "Year";
    String ioos_category "Time";
    String long_name "Year";
  }
  month {
    Int32 actual_range 1, 12;
    String description "Month";
    String ioos_category "Time";
    String long_name "Month";
  }
  julian_date {
    Int32 actual_range 17957, 44329;
    String description "OA Date: days since December 30, 1899";
    String ioos_category "Time";
    String long_name "Julian Date";
  }
  julian_day {
    Int32 actual_range 2, 354;
    String description "Julian Day of the year";
    String ioos_category "Time";
    String long_name "Julian Day";
  }
  time_string {
    String description "Time (UTC) CTD reached terminal depth";
    String ioos_category "Time";
    String long_name "Time of Cast";
  }
  lat_deg {
    Int32 actual_range 18, 47;
    String description "Observed Latitude in degrees";
    String ioos_category "Location";
    String long_name "latitude_degrees";
    String units "degrees";
  }
  lat_min {
    Float32 actual_range 0.0, 59.9;
    String description "Observed Latitude in minutes";
    String ioos_category "Location";
    String long_name "latitude_minutes";
    String units "minutes";
  }
  lat_hem {
    String description "Observed Latitude Hemisphere";
    String ioos_category "Location";
    String long_name "latitude_hemisphere";
  }
  lon_deg {
    Int32 actual_range -164, -105;
    String description "Observed Longitude in degrees";
    String ioos_category "Location";
    String long_name "longitude_degrees";
    String units "degrees";
  }
  lon_min {
    Float32 actual_range 0.0, 59.994;
    String description "Observed Longitude in minutes";
    String ioos_category "Location";
    String long_name "longitude_minutes";
    String units "minutes";
  }
  lon_hem {
    String description "Observed Longitude Hemisphere";
    String ioos_category "Location";
    String long_name "longitude_hemisphere";
  }
  rpt_line {
    Float32 actual_range 1.0, 176.7;
    String description "Reported Line Number";
    String ioos_category "Identifier";
    String long_name "Reported Line Number";
  }
  st_line {
    Float32 actual_range 1.0, 1734.0;
    String description "Nearest Standard Line";
    String ioos_category "Identifier";
    String long_name "Nominal CalCOFI Line";
  }
  ac_line {
    Float32 actual_range 0.0, 176.5;
    String description "Calculated actual line from observed latitude and longitude";
    String ioos_category "Identifier";
    String long_name "Actual Line Number";
  }
  rpt_sta {
    Float32 actual_range 0.1, 531.1;
    String description "Reported Station Number";
    String ioos_category "Identifier";
    String long_name "Reported Station";
  }
  st_station {
    Float32 actual_range 0.5, 531.0;
    String description "Nearest Standard Station Number";
    String ioos_category "Identifier";
    String long_name "Nominal CalCOFI Station";
  }
  ac_sta {
    Float32 actual_range -30.6, 531.1;
    String description "Calculated actual station from observed lat and long";
    String ioos_category "Identifier";
    String long_name "Actual Station";
  }
  bottom_d {
    Int32 actual_range 7, 8230;
    String description "Bottom depth in meters";
    String ioos_category "Bathymetry";
    String long_name "Station Bottom Depth";
    String units "meters";
  }
  secchi {
    Int32 actual_range 1, 58;
    String description "Secchi disk depth in meters";
    String ioos_category "Optical Properties";
    String long_name "Secchi";
    String units "meters";
  }
  fore_iu {
    Int32 actual_range 1, 21;
    String description "Water color; Only used in CalCOFI dataset from 1988-10 through 1998-04";
    String ioos_category "Ocean Color";
    String long_name "ForelU";
  }
  ship_name {
    String description "Ship's Name";
    String ioos_category "Identifier";
    String long_name "Ship Name";
  }
  ship_code {
    String description "Ship's NODC Code";
    String ioos_category "Identifier";
    String long_name "Ship Code";
  }
  data_type {
    String description "Data Type";
    String ioos_category "Identifier";
    String long_name "Data Type";
  }
  order_occ {
    Int32 actual_range 1, 3003;
    String description "Order station was occupied (within each cruise)";
    String ioos_category "Identifier";
    String long_name "Order Occupied";
  }
  event_num {
    Int32 actual_range 1, 30022;
    String description "Event number; includes all research opperations within each cruise (e.g. nets, CTD)";
    String ioos_category "Identifier";
    String long_name "Event Number";
  }
  cruz_leg {
    String description "Leg of cruise, if multiple legs";
    String ioos_category "Identifier";
    String long_name "Cruise Leg";
  }
  orig_sta_id {
    String description "IEH Reported Station ID";
    String ioos_category "Identifier";
    String long_name "Original Station Identifier";
  }
  data_or {
    String ioos_category "Identifier";
    String long_name "Organizational ID";
  }
  cruz_num {
    String description "Cruise Designation (Year Month)";
    String ioos_category "Identifier";
    String long_name "Cruise Number";
  }
  intchl {
    Float32 actual_range 2.4, 1043.2;
    String description "Integrated Chlorophyll per half light day";
    String ioos_category "Productivity";
    String long_name "Integrated Chlorophyll";
    String units "milligrams chl per square meter per half light day";
  }
  intc14 {
    Float32 actual_range 29.5, 5946.4;
    String description "Integrated Primary Productivity per half light day";
    String ioos_category "Other";
    String long_name "Integrated C14 Assimilation";
    String units "milligrams C per square meter per half light day";
  }
  inc_str {
    String description "Incubation Start Time (PST)";
    String ioos_category "Time";
    String long_name "Incubation Start Time PST";
  }
  inc_end {
    String description "Incubation End Time (PST)";
    String ioos_category "Time";
    String long_name "Incubation End Time PST";
  }
  pst_lan {
    String description "Time of Local Apparent Noon (PST)";
    String ioos_category "Time";
    String long_name "Local Apparent Noon PST";
  }
  civil_t {
    String description "Time of Civil Twilight (PST)";
    String ioos_category "Time";
    String long_name "Civil Twilight PST";
  }
  timezone {
    Int32 actual_range 8, 8;
    String description "Time Zone";
    String ioos_category "Time";
    String long_name "Time Zone";
  }
  wave_dir {
    Int32 actual_range 0, 49;
    String description "Wave Direction reported using an abbreviated 360 degree azimuth circle with 00 representing True North, 18 represents 180 degrees";
    String ioos_category "Surface Waves";
    String long_name "Wave Direction Code";
    String units "degrees";
  }
  wave_ht {
    Int32 actual_range 0, 40;
    String description "Wave Height in feet";
    String ioos_category "Surface Waves";
    String long_name "Wave Height";
    String units "feet";
  }
  wave_prd {
    Int32 actual_range 0, 50;
    String description "Wave Period in seconds";
    String ioos_category "Surface Waves";
    String long_name "Wave Period";
    String units "seconds";
  }
  wind_dir {
    Int32 actual_range 0, 38;
    String description "Reported using an abbreviated 360 degree azimuth circle with 0 representing True North, 18 representing 180 degrees";
    String ioos_category "Wind";
    String long_name "Wind Direction";
    String units "degrees";
  }
  wind_spd {
    Int32 actual_range 0, 90;
    String description "Wind Speed in knots";
    String ioos_category "Wind";
    String long_name "Wind Speed";
    String units "knots";
  }
  barometer {
    Float32 actual_range 101.4, 1112.6;
    String description "Millibars to the tenths";
    String ioos_category "Pressure";
    String long_name "Atmospheric Pressure";
    String units "millibars";
  }
  dry_t {
    Float32 actual_range 1.7, 43.1;
    String description "Dry Air Temperature from a Sling Psychrometer in degrees Celcius";
    String ioos_category "Temperature";
    String long_name "Dry Bulb Temperature";
    String units "degrees Celcius";
  }
  wet_t {
    Float32 actual_range 1.8, 58.0;
    String description "Wet Air Temperature from a Sling Psychrometer in degrees Celcius";
    String ioos_category "Temperature";
    String long_name "Wet Bulb Temperature";
    String units "degrees Celcius";
  }
  wea {
    Int32 actual_range 0, 9;
    String description "1 Digit Code from The World Meteorlogical Organization, Code source WMO 4501";
    String ioos_category "Meteorology";
    String long_name "Weather Code";
  }
  cloud_typ {
    Int32 actual_range 0, 9;
    String description "1 Digit Code from The World Meteorlogical Organization, Code source WMO 0500";
    String ioos_category "Meteorology";
    String long_name "Cloud Type Code";
  }
  cloud_amt {
    Int32 actual_range 0, 17;
    String description "1 Digit Code from The World Meteorlogical Organization, Code source WMO 2700, in oktas";
    String ioos_category "Meteorology";
    String long_name "Cloud Amount Code";
  }
  visibility {
    Int32 actual_range 0, 9;
    String description "1 Digit Code from The World Meteorlogical Organization, Code source WMO 4300";
    String ioos_category "Meteorology";
    String long_name "Visibility Code";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String contributor_email "rswalethorp@ucsd.edu";
    String contributor_name "Rasmus Swalethorp";
    String Conventions "COARDS, CF-1.6, ACDD-1.3, NCCSV-1.1";
    String creator_email "lynn.dewitt@noaa.gov";
    String defaultGraphQuery "longitude,latitude,year&.draw=markers";
    Float64 Easternmost_Easting -105.967;
    Float64 geospatial_lat_max 47.917;
    Float64 geospatial_lat_min 18.417;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -105.967;
    Float64 geospatial_lon_min -164.083;
    String geospatial_lon_units "degrees_east";
    String history 
"last updated: 2023-10-25 CalCOFI file: 194903-202105_Cast.csv
2024-04-27T10:09:17Z (local files)
2024-04-27T10:09:17Z http://upwell.pfeg.noaa.gov/tabledap/siocalcofiHydroCast.das";
    String infoUrl "https://wp.calcofi.org/wp/data/oceanographic-data/bottle-database/";
    String institution "UCSD SIO";
    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.";
    Float64 Northernmost_Northing 47.917;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 18.417;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "cruise_id,sta_id,year,month";
    String summary "SIO Hydrographic data. See https://wp.calcofi.org/wp/sampling-info/methods/bottle-sampling-methods/";
    String time_coverage_end "2021-05-13T20:37:00Z";
    String time_coverage_start "1949-02-28T22:42:00Z";
    String title "CalCOFI SIO Hydrographic Cast Data";
    Float64 Westernmost_Easting -164.083;
  }
}

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://upwell.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://upwell.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.