directed by Ric Roman Waugh
This is a disaster movie. But it's not just a disaster movie. It's a possible world ending, extinction level event disaster movie. With these sorts of films there are usually two choice the writer(s) and/or director can make. One choice usually involves some square jawed hero solemnly intoning we will not go gently into the night and along with his ragtag group of desperately attempting to avert the Apocalypse by any means necessary while attempting to reconnect with his estranged wife or child.
The other choice takes it for granted that there is nothing that can be done. The film then has the protagonist spend the entire running time talking to his loved ones and examining the mistakes he or they have made with each other before the inevitable happens. There are usually a number of impressive effects that show the impending doom's progression. Maybe the asteroid gets closer and smaller pieces of it hit places across the world. Maybe the ozone barrier is pierced. Each day the earth's temperature climbs or drops but gets nearer to a point where humans can't survive. And so on.
Greenland is a hybrid of these two types of films. Somewhat surprisingly, perhaps because of the relatively low budget it doesn't have a lot of iconic disaster scenes. It concentrates much more on the struggle to survive--even if survival may literally just mean one more day.