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Climate Data Online Web Services: Data Types

This version of the Climate Data Online web services API is deprecated. Please switch to Climate Data Online web services API version 2.

Base URL Address

Every request should begin with the following standard URL. All requests must begin with this base URL.

Base URL
http://www.ncdc.noaa.gov/cdo-services/services

Retrieve Data Types

To retrieve the data types available, use one of the URIs below with your token. CDO data types are unique to each dataset; each data type element contains the data type id (id) and a description (description) of the data type

URI Patterns

/datasets/{dataSet}/locationtypes/{locationType}/datatypes
/datasets/{dataSet}/locationtypes/{locationType}/datatypes/{dataType}
/datasets/{dataSet}/locationtypes/{locationType}/locations/{location}/datatypes
/datasets/{dataSet}/locationtypes/{locationType}/locations/{location}/datatypes/{dataType}
/datasets/{dataSet}/locationtypes/{locationType}/locations/{location}/stations/{station}/datatypes
/datasets/{dataSet}/locationtypes/{locationType}/locations/{location}/stations/{station}/datatypes/{dataType}
/datasets/{dataSet}/locations/{location}/datatypes
/datasets/{dataSet}/locations/{location}/datatypes/{dataType}
/datasets/{dataSet}/locations/{location}/stations/{station}/datatypes
/datasets/{dataSet}/locations/{location}/stations/{station}/datatypes/{dataType}
/datasets/{dataSet}/stations/{station}}/datatypes
/datasets/{dataSet}/stations/{station}/datatypes/{dataType}
/datasets/{dataSet}/datatypes
/datasets/{dataSet}/datatypes/{dataType}

Output

CDO Web Services returns data output specified by the MIME type of application's request to the CDO Web Service system. For example, sending a request to the CDO services with a request type of "application/json" will retrieve JSON formatted data from the service. Output can also be specified by appending .xml or .json to the end of the service URI address and before any query-type parameters.

Additional Parameters

Below is a list of query parameters that are available for this URI pattern. Construct the web service target from the base URL and the URI patterns above then add these parameters after the question mark query separator (with each field-value pair separated by an ampersand).

Parameter Example Description
token This must be a valid token token supplied to you by NCDC's Climate Data Online access token generator. This is a required option. No data responses will be returned without a valid token.
startdate 20000101 The date format pattern to limit the start date of the web service query. This is a string date mask represented by "yyyyMMdd" where yyyy is a 4-digit year, MM is the 2-digit month, and dd is the 2-digit day. Optional.
enddate 20101231 The date format pattern to limit the end date of the web service query. This is a string date mask represented by "yyyyMMdd" where yyyy is a 4-digit year, MM is the 2-digit month, and dd is the 2-digit day. Optional.
page 1 Results with over 10 items will be paginated. This controls which page of data is returned from the service. This variable only accepts an integer as input and is optional.

URI Examples

Click on the links below and a preview will display example results from
each REST query. Select either XML or JSON to view each respective format.
Copy the URL listed below to use as a reference.
*Note: Your token is required to use these queries

http://www.ncdc.noaa.gov/cdo-services/services/datasets/GHCND/locations/ZIP:28801/datatypes

http://www.ncdc.noaa.gov/cdo-services/services/datasets/NORMAL_ANN/datatypes

Troubleshooting

If you are having issues retrieving data, please check the following:

  • Check code for typos paying close attention to case
  • Double check your token
  • Try the full RESTful URL in a web browser to see if you are getting the same results