Climate change has initially impacted people into displacement within their country in the hope of returning.
It usually activates a chain reaction in which people, for instance, move from a rural area to an urban area to look for employment. If they find employment, sometimes this will fuel international migration. We don't have direct climate migration or, say, climate refugees in Canada, and it's very difficult from a legal perspective to ascertain that someone has moved mainly for climate reasons, but it is very important to look ahead on how these things will affect local economies and local systems of production and what the chain reaction will be.
Also, a lot of the strongest climate impact is in places where states have less capacity to look after their citizens.