Terms of service

This version of Frost is still work in progress. MET Norway does not guarantee that the service will always behave 100% according to documentation or expectations.
In the following you will find guidelines for using the Frost API. The API has good capacity and can handle relatively large volumes of requests, but the capacity is not unlimited. We encourage all users to respect the guidelines so that the API will be stable. If we see that there are situations that threaten the operation of our environment, we would consider blocking out the users / services that have high load / bad traffic patterns. If you set up your service in accordance with our policy it will increase the probability that it is not blocked.

Updates

Do not ask too often. New data comes in frequently, but old data changes seldom. Do not poll for new data too often, and consider caching older data.

Local Caching

You should save the information on your own server if you have heavy traffic. Heavy traffic means on average more than 1 requests to the API per second.

Large Requests

You may find that it is possible to ask for more data than fits in a response (and get an error message). Please split your request into smaller subrequests. For example, a request that specifies data from 1000 weather stations could be split into 10 requests, each specifying 100 stations. Likewise, a long timeseries of observations can be split into requests for N time subranges.

Conditions for data use

Data from frost.met.no are licensed and the license is found in every response. Read more about licensing and crediting here.
All weather data available through the API are continually updated. New data is available continuously (once it is in the database, but some types of data go through quality control first). Other products have a varying length of phase-out period, depending on what we consider to be reasonable. There are no guarantees of delivery regarding this service.