Haha, yes, the ocean might solve the Danish problem once and for all. I think there is pretty convincing evidence that the composition of the atmosphere oxygen, CO2, methan, water vapour etc. influence the climate. I am not really that fond of Al Gore I must admit, and I do not place much emphasis on his propaganda.
A lot of the leaking nitrous oxide and methane is indeed from low lying land, rice farming is just as bad as beef (so the vegans do as usual not have a strong case). But all the other greenhouse gasses disappear after 5-15 years while CO2 never does - it has to be sucked down by sea and land based plants. So reducing the CO2 is in my opinion a good idea for many reasons. Burning all that fossil fuel also pollutes in so many other ways.
All in all this will be a good investment for Denmark. We have been earning a lot of money on exporting new technology, especially wind power, and even though a lot of our investments will give Poland and Germany cheap green electricity it might on the other hand reduce particle pollution from their coal plants here in Denmark.
P.S. Denmark has good opportunities for geo-thermal plants, but it is still considered too expensive. Could be interesting if they threw some more money after some experimental facilities both in this and in wave energy. We'll see what the budget is going to look like.