Tracking API FAQ - npolar/api.npolar.no GitHub Wiki

Get one message per day? Use group=measured-isodate

Get last known position? Use group=platform&sort=measured+desc.

You can easily refine this by making sure the data contains positions (filter-latitude=-90..90), and by requesting just the fields you want: Last known position CSV

Transmitters

What is being tracked? The movements of polar animals and other objects like buoys and expedition vessels. For details on each individual transmitter, see the Tracking Deployment API Q. How do I retrieve a complete list of transmitters, including when it was started?

A. Use the Tracking Deployment API, for example Polar bear deployments CSV

Why are some individuals missing?

A. The Tracking API consists of the original Argos data (where only the "platform" (PTT) is present), combined with tagging data from the Norwegian Polar Institue, found in the Tracking Deployment API, where "species", tagging date ("deployed") and "individual" is found.

Normally "individual" contains an indvidual ID, but in some cases it's not possible to identify individuals uniquely, then "individuals" contains an array of possible matches, and "deployments" an array of possible deployment URIs.