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Data Access Form

Dataset Title:	Dropsonde 2014_2017
Institution:	NOAA (Dataset ID: dropsonde_2014_2017)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Files \| Make a graph

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Variable

Optional
Constraint #1

Optional
Constraint #2

Minimum

or a List of Values

Maximum

tropical_cyclone_name

flight_id

time (UTC)

latitude (degrees_north)

longitude (degrees_east)

pressure (hPa)

146.0

1099.0

temperature (degree_C)

-70.9

31.0

relative_humidity (1)

0.1

100.0

geopotential_height (m)

-444.0

14370.0

wind_u (U Wind Component, m s-1)

-99.3

67.1

wind_v (V Wind Component, m s-1)

-93.2

86.1

data_flags

"ADDL"

"TROP"

Server-side Functions

distinct()

Hover here to see a list of options. Click on an option to select it.

File type: (more information)

(Documentation / Bypass this form )

(Please be patient. It may take a while to get the data.)

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  tropical_cyclone_name {
    String ioos_category "Unknown";
    String long_name "Tropical Cyclone Name";
    String standard_name "tropical_cyclone_name";
  }
  flight_id {
    String comment "The flight ID is the date, flight type, and number of the flight this day. N means N49, H means H42, A and U means Air Force, and I means N43";
    String ioos_category "Identifier";
    String long_name "Flight Id";
    String standardname "Flight ID";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.4363136e+9, 1.5077844e+9;
    String axis "T";
    String calendar "gregorian";
    String comment "Seconds since 1970-01-01T00:00:00Z";
    String ioos_category "Time";
    String long_name "Time";
    String observation_type "measured";
    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";
    Float64 actual_range 11.0, 70.1;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String comment "Latitude of Observation (degree N positive)";
    String ioos_category "Location";
    String long_name "Latitude";
    String observation_type "measured";
    String platform "dropsonde";
    String standard_name "latitude";
    String units "degrees_north";
    Float64 valid_max 90.0;
    Float64 valid_min -90.0;
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -166.4, -46.6;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String comment "Longitude of Observation (degree E positive)";
    String ioos_category "Location";
    String long_name "Longitude";
    String observation_type "measured";
    String platform "dropsonde";
    String standard_name "longitude";
    String units "degrees_east";
    Float64 valid_max 180.0;
    Float64 valid_min -180.0;
  }
  pressure {
    Float64 _FillValue -99.0;
    Float64 actual_range 146.0, 1099.0;
    Float64 colorBarMaximum 1050.0;
    Float64 colorBarMinimum 950.0;
    String comment "Pressure Level of Observation (mb or hPa). For example 1070.0 indicates the surface";
    String ioos_category "Pressure";
    String long_name "Pressure Level of Observation";
    String observation_type "measured";
    String platform "dropsonde";
    String standard_name "air_pressure";
    String units "hPa";
  }
  temperature {
    Float64 _FillValue -99.0;
    Float64 actual_range -70.9, 31.0;
    Float64 colorBarMaximum 40.0;
    Float64 colorBarMinimum -10.0;
    String ioos_category "Temperature";
    String long_name "Temperature";
    String observation_type "measured";
    String platform "dropsonde";
    String standard_name "air_temperature";
    String units "degree_C";
  }
  relative_humidity {
    Float64 _FillValue -99.0;
    Float64 actual_range 0.1, 100.0;
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 20.0;
    String comment "Relative Humidity (%)";
    String ioos_category "Meteorology";
    String long_name "Relative Humidity";
    String observation_type "measured";
    String platform "dropsonde";
    String standard_name "relative_humidity";
    String units "1";
  }
  geopotential_height {
    Float64 _FillValue -99.0;
    Float64 actual_range -444.0, 14370.0;
    Float64 colorBarMaximum 1000.0;
    Float64 colorBarMinimum -50.0;
    String comment "This is surface pressure (mb) if air_pressure = 1070.0";
    String ioos_category "Sea Level";
    String long_name "Geopotential Height";
    String observation_type "measured";
    String platform "dropsonde";
    String standard_name "geopotential_height";
    String units "m";
  }
  wind_u {
    Float64 _FillValue -99.0;
    Float64 actual_range -99.3, 67.1;
    String comment "U (Zonal) Wind Component";
    String ioos_category "Wind";
    String long_name "U Wind Component";
    String observation_type "measured";
    String platform "dropsonde";
    String standard_name "u_wind_component";
    String units "m s-1";
  }
  wind_v {
    Float64 _FillValue -99.0;
    Float64 actual_range -93.2, 86.1;
    String comment "V (Meridional) Wind Component";
    String ioos_category "Wind";
    String long_name "V Wind Component";
    String observation_type "measured";
    String platform "dropsonde";
    String standard_name "v_wind_component";
    String units "m s-1";
  }
  data_flags {
    String comment "These indicate level type for operational dropwindsonde data: MANL = mandatory, SIGL = significant, ADDL = additional (extrapolated), TROP = tropopause, MAXW = maximum wind";
    String ioos_category "Quality";
    String long_name "Data Flags";
    String platform "dropsonde";
    String standard_name "data_flags";
  }
 }
  NC_GLOBAL {
    String acknowledgement "This project is funded by the National Oceanic and Atmospheric Administration (NOAA)";
    String cdm_data_type "Point";
    String comment "Dropsonde Temperature and Wind Direction profiles";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "sandra.bringas-at-noaa.gov";
    String creator_name "Sandra Bringas";
    String creator_type "person";
    String creator_url "https://www.noaa.gov/";
    Float64 Easternmost_Easting -46.6;
    String featureType "Point";
    Float64 geospatial_lat_max 70.1;
    Float64 geospatial_lat_min 11.0;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -46.6;
    Float64 geospatial_lon_min -166.4;
    String geospatial_lon_units "degrees_east";
    String history 
"2025-04-30T07:06:21Z (local files)
2025-04-30T07:06:21Z https://erddap.aoml.noaa.gov/hdb/erddap/tabledap/dropsonde_2014_2017.html";
    String infoUrl "https://www.noaa.gov/";
    String institution "NOAA";
    String keywords "air, air_pressure, air_temperature, altitude, atmosphere, atmospheric, component, cyclone, data, data_flags, dropsonde, earth, Earth Science > Atmosphere > Altitude > Geopotential Height, Earth Science > Atmosphere > Atmospheric Pressure > Atmospheric Pressure Measurements, Earth Science > Atmosphere > Atmospheric Pressure > Sea Level Pressure, Earth Science > Atmosphere > Atmospheric Pressure > Static Pressure, Earth Science > Atmosphere > Atmospheric Temperature > Air Temperature, Earth Science > Atmosphere > Atmospheric Temperature > Surface Air Temperature, Earth Science > Atmosphere > Atmospheric Water Vapor > Humidity, flags, flight, flight_id, geopotential, geopotential_height, height, humidity, identifier, latitude, level, longitude, measurements, meteorology, name, noaa, observation, pressure, quality, relative, relative_humidity, science, sea, sea level, seawater, static, surface, temperature, time, tropical, tropical_cyclone_name, u, u_wind_component, v, v_wind_component, vapor, water, wind, wind_u, wind_v";
    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, 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 70.1;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 11.0;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "tropical_cyclone_name, flight_id, time, latitude, longitude";
    String summary "Dropsonde Temperature and Wind Direction profiles";
    String time_coverage_end "2017-10-12T05:00:00Z";
    String time_coverage_start "2015-07-08T00:00:00Z";
    String title "Dropsonde 2014_2017";
    Float64 Westernmost_Easting -166.4;
  }
}

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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