Make A Graph

Dataset Title:	ICOADS Air-Sea Fluxes v0.1
Institution:	NCAR RDA (Dataset ID: ICOADS_Time)
Range:	longitude = -179.94 to 180.0°E, latitude = -78.6 to 90.0°N, time = 1990-01-01T00:00:00Z to 2021-01-17T23:00:00Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Data Access Form \| Files

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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 {
  id {
    String ioos_category "Unknown";
    String long_name "ID";
  }
  iidx {
    Int32 _FillValue 2147483647;
    Int32 actual_range 146664709, 802430635;
    String ioos_category "Unknown";
    String long_name "Iidx";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 6.31152e+8, 1.6109244e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Time";
    String source_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 -78.6, 90.0;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "Latitude";
    String source_name "lat_scaled";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -179.94, 180.0;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String source_name "lon_scaled";
    String standard_name "longitude";
    String units "degrees_east";
  }
  slp_scaled {
    Float32 actual_range 870.0, 1074.6;
    Float64 colorBarMaximum 1050.0;
    Float64 colorBarMinimum 950.0;
    String ioos_category "Pressure";
    String long_name "Surface Air Pressure";
    String standard_name "surface_air_pressure";
    String units "mb";
  }
  wbt_scaled {
    Float32 actual_range -99.9, 99.5;
    String ioos_category "Meteorology";
    String long_name "Wet-bulb Temperature";
    String standard_name "wet_bulb_temperature";
    String units "degree_C";
  }
  dpt_scaled {
    Float32 actual_range -99.9, 99.7;
    String ioos_category "Meteorology";
    String long_name "Dewpoint Temperature";
    String standard_name "dew_point_temperature";
    String units "degree_C";
  }
  sst_scaled {
    Float32 actual_range -2.8, 50.0;
    String ioos_category "Temperature";
    String long_name "Sea Surface Temperature";
    String standard_name "sea_surface_temperature";
    String units "degree_C";
  }
  dyn_in_val {
    Float32 actual_range 0.0, 50.0;
    String ioos_category "Meteorology";
    String long_name "Dynamic Input Variable = Wind Speed";
    String units "m s-1";
  }
  a_ustar {
    Float64 actual_range 3.9653036516989954e-5, 2.866247690306404;
    String ioos_category "Other";
    String long_name "Friction Velocity (u*)";
    String units "m s-1";
  }
  u_star_0 {
    Float64 actual_range 3.9653036516989954e-5, 2.866247690306404;
    String ioos_category "Other";
    String long_name "Friction Velocity (u*) (0)";
    String units "m s-1";
  }
  u_star_1 {
    Float32 actual_range 0.0, 0.0;
    String ioos_category "Other";
    String long_name "Friction Velocity (u*) (1)";
    String units "m s-1";
  }
  t_star {
    Float64 actual_range -21.319842739241285, 2.2425648340891815;
    String ioos_category "Unknown";
    String long_name "Scaling Term for Potential Temp";
    String units "degree_C";
  }
  q_star {
    Float64 actual_range -0.017545665875601968, 0.027045737446901356;
    String ioos_category "Unknown";
    String long_name "Scaling Param for Moisture";
    String units "none";
  }
  z_over_L {
    Float64 actual_range -80.0, 80.0;
    String ioos_category "Other";
    String long_name "Monin-Obhukov scale length";
    String standard_name "boundary_layer_stability_parameter";
    String units "none";
  }
  dom_phase_spd {
    Float64 actual_range 0.0, 125.08304881697568;
    String ioos_category "Surface Waves";
    String long_name "Dominant Phase Speed";
    String units "m s-1";
  }
  wave_age {
    Float32 actual_range 43.64, 43.64;
    String ioos_category "Surface Waves";
    String long_name "Wave Age";
    String units "none";
  }
  hsig {
    Float32 actual_range 0.0, 0.0;
    String ioos_category "Surface Waves";
    String long_name "Significant Wave Height";
    String standard_name "sea_surface_wave_significant_height";
    String units "m";
  }
  tau_0 {
    Float64 actual_range 1.2307557955098714e-9, 11.140193648340087;
    String ioos_category "Other";
    String long_name "Stress Vector[0]";
    String standard_name "magnitude_of_surface_downward_stress";
    String units "N m-2";
  }
  tau_1 {
    Float32 actual_range 0.0, 0.0;
    String ioos_category "Other";
    String long_name "Stress Vector[1]";
    String standard_name "magnitude_of_surface_downward_stress";
    String units "N m-2";
  }
  shf {
    Float64 actual_range -5683.752183958991, 7574.386061542626;
    String ioos_category "Heat Flux";
    String long_name "Sensible Heat Flux";
    String standard_name "surface_upward_sensible_heat_flux";
    String units "W m-2";
  }
  lhf {
    Float64 actual_range -59853.262557265545, 6809.426252849423;
    String ioos_category "Heat Flux";
    String long_name "Latent Heat Flux";
    String standard_name "surface_upward_latent_heat_flux";
    String units "W m-2";
  }
  u_at_z {
    Float64 actual_range 0.0, 49.99349527466889;
    String ioos_category "Wind";
    String long_name "Wind Speed At 10 Meters";
    String standard_name "wind_speed";
    String units "m s-1";
  }
  t_at_z {
    Float64 actual_range -313.2532799292393, 1308.779235152862;
    String ioos_category "Temperature";
    String long_name "Potential Temperature At 10 Meters";
    String standard_name "air_potential_temperature";
    String units "degree_C";
  }
  q_at_z {
    Float64 actual_range -0.2896294017211001, 15.013333130287158;
    String ioos_category "Meteorology";
    String long_name "Specific Humidity At 10 Meters";
    String standard_name "specific_humidity";
    String units "kg kg-1";
  }
  zo_m {
    Float64 actual_range 1.232102889206664e-5, 0.3247201914868551;
    String ioos_category "Other";
    String long_name "Momentum Roughness Length";
    String standard_name "surface_roughness_length_for_momentum_in_air";
    String units "m";
  }
  date {
    Float64 actual_range 6.31152e+8, 1.6108416e+9;
    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";
  }
  time_of_day {
    String ioos_category "Time";
    String long_name "Time";
    String standard_name "time";
  }
 }
  NC_GLOBAL {
    String acknowledgment "NOAA/CPO/COM via award NA21OAR4310262";
    String cdm_data_type "Point";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "alovett@fsu.edu";
    String creator_name "Amanda Lovett";
    String creator_type "institution";
    String creator_url "https://mdc.coaps.fsu.edu/";
    Float64 Easternmost_Easting 180.0;
    String featureType "Point";
    Float64 geospatial_lat_max 90.0;
    Float64 geospatial_lat_min -78.6;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 180.0;
    Float64 geospatial_lon_min -179.94;
    String geospatial_lon_units "degrees_east";
    String history 
"Used original year, month, day, hour data in ICOADS to create ISO time string for ERDDAP
2024-11-23T10:08:04Z (local files)
2024-11-23T10:08:04Z http://erddap-icoads.coaps.fsu.edu/tabledap/ICOADS_Time.das";
    String infoUrl "https://rda.ucar.edu/datasets/ds548.0/";
    String institution "NCAR RDA";
    String keywords "a_ustar, age, air, atmosphere, atmospheric, coads, comprehensive, currents, data, date, dom, dom_phase_spd, dpt, dpt_scaled, dyn, dyn_in_val, earth, Earth Science > Atmosphere > Atmospheric Pressure > Surface Pressure, florida, fluxes, hsig, icoads, iidx, international, latitude, lhf, longitude, ocean, over, phase, pressure, q_at_z, q_star, scaled, science, sea, set, shf, slp_scaled, spd, sst, sst_scaled, star, state, surface, surface waves, surface_air_pressure, t_at_z, t_star, tau, tau_0, tau_1, temperature, time, u, u_at_z, u_star_0, u_star_1, university, ustar, v0.1, val, wave, wave_age, waves, wbt, wbt_scaled, z_over_L, zo_m";
    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 Florida State University, COAPS, 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 90.0;
    String processing_level "2";
    String project "MarineFlux";
    String publisher_email "marineflux@coaps.fsu.edu";
    String publisher_name "Florida State University, COAPS";
    String publisher_url "https://mdc.coaps.fsu.edu/marineflux";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -78.6;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "Air-sea fluxes derived using bulk formulas from a subset of the International Comprehensive Ocean-Atmosphere Dataset (ICOADS). Fluxes are derived from ship-based and mooring-based observations and are available for the period 1990-2020. These fluxes are derived from individual marine weather and ocean reports and are provided at the time and location of the original observations.";
    String time_coverage_end "2021-01-17T23:00:00Z";
    String time_coverage_start "1990-01-01T00:00:00Z";
    String title "ICOADS Air-Sea Fluxes v0.1";
    Float64 Westernmost_Easting -179.94;
  }
}

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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