Thank you for the question.
It has been a source of some frustration for our office in the sense that we've had to recommend and re-recommend, not just in my tenure but with previous commissioners as well, the need for more transparency and more accurate modelling. Why has it been such a tough nut to crack by Environment and Climate Change Canada? I don't know. That would be a good question to ask them when you have them before you as witnesses.
I am in agreement that, to date, the quality of the modelling and the assumptions going into them have not been up to standard, and neither has the degree of transparency with respect to that. I would add that improving the transparency could also lead to more accurate modelling, because other third parties would be able to use the data and run models and do their own work, as is common in scientific fora.
Improving transparency and accuracy is something that we've recommended several times. You would have to ask the department why they are not progressing as far as we'd like and you'd like.