Mr. Parker,
You wish for an explanation on why I think our computer models are wrong ? Fine, here is what I base my opinion on :
This study seems to indicate that glaciers are melting for reasons not directly linked to climate change, due to an as-of-yet unknown glacier melting phenomenon. Since it is not known of yet, it cannot have been implemented in the models.
This study claims that polar ice loss is "incredible", and suitably goes on about how the situation paints a dire picture for future sea levels.
Unfortunately, this paper claims that the sea level rise is nothing new, nor is it adequately explained and the data does not support the coastal apocalypse scenario some people like to bandy about.
Some confusion evidently abounds.
Then you have the field of proxy measurement. As stated in this article, "Instrumental measurements are the gold standard, but there aren't enough of them for truly satisfactory science." That clearly means that we know we cannot adequately measure everything (which I understand), so we choose something we can measure and decide on its validity in pointing to what we want to measure (which I can understand as well).
The unfortunate side-effect of this method is that we base our models on these proxies, and derive multi-billion-dollar policies based on the results of said models, until one fine day we find out, as pointed out in the first article I cited, that our proxy is governed by something we had no knowledge of.
Now let me put one thing straight : I am not disputing the methods, nor am I putting in question the existence of the models. We need the models, we need to simulate and evaluate with what we have, and I am sure that said models are updated as new events arise.
What I do dispute is pissing away billions without knowing what the effect will be, and there is nothing in meteorology today that tells me we know where we are going. So let's cut the hype, lock the zealots in their padded chambers and think rationally in a quiet atmosphere, hmm ?
Then we will be more able to make the right decision, instead of deciding things based on what the most heavily-funded lobby wants to push for.
That is all.