Data Access Form

Dataset Title:	Tropical Cyclone Heat Potential 2022_present
Institution:	USDOC/NOAA/OAR/AOML/PHOD (Dataset ID: TCHP)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Files \| Make a graph

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Dimensions	Size	Spacing
time (Reference Time, UTC)	928	1 day 0h 34m 10s (uneven)

latitude (degrees_north)	721	0.25 (even)

longitude (degrees_east)	1441	0.25 (even)

Grid Variables (which always also download all of the dimension variables)

Tropical_Cyclone_Heat_Potential (KJcm-2)

D26 (Depth of the 26C isotherm, m)

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 {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.6514064e+9, 1.7334e+9;
    String axis "T";
    String calendar "Gregorian";
    String CoordinateAxisType "Time";
    String ioos_category "Time";
    String long_name "Reference 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 -90.0, 90.0;
    String axis "Y";
    String CoordinateAxisType "Lat";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -180.0, 180.0;
    String axis "X";
    String CoordinateAxisType "Lon";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  Tropical_Cyclone_Heat_Potential {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String coordsys "geographic";
    String ioos_category "Other";
    String long_name "Tropical Cyclone Heat Potential";
    String standard_name "integral_of_sea_water_potential_temperature_wrt_depth_expressed_as_heat_content";
    String units "KJcm-2";
    String variable_info "To be Completed";
  }
  D26 {
    Float32 _FillValue NaN;
    Float64 colorBarMaximum 200.0;
    Float64 colorBarMinimum 0.0;
    String coordsys "geographic";
    String ioos_category "Temperature";
    String long_name "Depth of the 26C isotherm";
    String standard_name "depth_of_isosurface_of_sea_water_potential_temperature";
    String units "m";
    String variable_info "To be Completed";
  }
  NC_GLOBAL {
    String cdm_data_type "Grid";
    String comment 
"Tropical Cyclone Heat Potential V2.1
 www.aoml.noaa.gov/phod/cyclone";
    String contact "Joaquin.Trinanes@noaa.gov";
    String Conventions "COARDS, CF-1.10, ACDD-1.3";
    String creator_email "Joaquin.Trinanes@noaa.gov";
    String creator_name "Physical Oceanography Division at NOAA/AOML";
    String creator_type "institution";
    String creator_url "https://www.aoml.noaa.gov/phod/cyclone/data/gl.html";
    String data_source "USDOC/NOAA/OAR/AOML/PHOD ATLANTIC OCEANWATCH";
    Float64 Easternmost_Easting 180.0;
    Float64 geospatial_lat_max 90.0;
    Float64 geospatial_lat_min -90.0;
    Float64 geospatial_lat_resolution 0.25;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 180.0;
    Float64 geospatial_lon_min -180.0;
    Float64 geospatial_lon_resolution 0.25;
    String geospatial_lon_units "degrees_east";
    String history 
"2024-02-05T22:06:51Z https://cwcgom.aoml.noaa.gov/thredds/dodsC/TCHP/TCHP.nc
2024-02-05T22:06:51Z https://cwcgom.aoml.noaa.gov:8080/erddap/griddap/aomlTCHP.nc?Tropical_Cyclone_Heat_Potential[(2024-02-05T12:00:00Z):1:(2024-02-05T12:00:00Z)][(-90.0):1:(90.0)][(-180.0):1:(180.0)],D26[(2024-02-05T12:00:00Z):1:(2024-02-05T12:00:00Z)][(-90.0):1:(90.0)][(-180.0):1:(180.0)]
2025-04-30T05:15:11Z https://cwcgom.aoml.noaa.gov/thredds/dodsC/TCHP/TCHP.nc
2025-04-30T05:15:11Z https://erddap.aoml.noaa.gov/hdb/erddap/griddap/TCHP.das";
    String infoUrl "https://www.aoml.noaa.gov/phod/cyclone/data/gl.html";
    String institution "USDOC/NOAA/OAR/AOML/PHOD";
    String keywords "26c, altimeter, aoml, atlantic, atmospheric, commerce, content, cyclone, d26, data, department, depth, depth_of_isosurface_of_sea_water_potential_temperature, division, earth, Earth Science > Oceans > Ocean Temperature > Potential Temperature, Earth Science > Oceans > Ocean Temperature > Water Temperature, expressed, fields, heat, heat content, hurricane, hurricane intensification, integral, integral_of_sea_water_potential_temperature_wrt_depth_expressed_as_heat_content, isosurface, isotherm, laboratory, latitude, longitude, meteorological, noaa, oar, ocean, oceanic, oceanographic, oceanography, oceans, office, phod, physical, potential, research, science, sea, seawater, sst, states, surface, tchp, temperature, time, tropical, Tropical_Cyclone_Heat_Potential, united, usdoc, water, wrt";
    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.";
    Int32 nco_openmp_thread_number 1;
    Int32 node_offset 0;
    Float64 Northernmost_Northing 90.0;
    String origin "USDOC/NOAA/OAR/AOML/PHOD ATLANTIC OCEANWATCH";
    String source_data "Altimeter SHA+MW SST";
    String sourceUrl "https://cwcgom.aoml.noaa.gov/thredds/dodsC/TCHP/TCHP.nc";
    Float64 Southernmost_Northing -90.0;
    String spatial_resolution "0.25 degree";
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "Tropical Cyclone Heat Potential";
    Float64 temporal_extent 86400.0;
    String temporal_extent_unit "seconds";
    String testOutOfDate "now-1day";
    String time_coverage_end "2024-12-05T12:00:00Z";
    String time_coverage_start "2022-05-01T12:00:00Z";
    String title "Tropical Cyclone Heat Potential 2022_present";
    Float64 Westernmost_Easting -180.0;
  }
}

Using griddap to Request Data and Graphs from Gridded Datasets

griddap lets you request a data subset, graph, or map from a gridded dataset (for example, sea surface temperature data from a satellite), via a specially formed URL. griddap uses the OPeNDAP (external link)

Data Access Protocol (DAP) (external link)

and its projection 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. It makes 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.

griddap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/griddap/jplMURSST41.htmlTable?analysed_sst[(2002-06-01T09:00:00Z)][(-89.99):1000:(89.99)][(-179.99):1000:(180.0)]
Thus, the query is often a data variable name (e.g., analysed_sst), followed by [(start):stride:(stop)] (or a shorter variation of that) for each of the variable's dimensions (for example, [time][latitude][longitude]).

For details, see the griddap Documentation.