Failing to prove one thing, does not support the existence of the opposite.
In this case I see it as (it might appear) global warming may just have failed to be proved. But it is not proved that it does not exist at all.
I meant just that the study you're referring to in the most recent link was not a study to back up the idea of global warming at all, but seems to have been one that predicts the rate at which the globe will warm. This isn't the study that gives us the idea of global warming at all and (presumably) that study or those studies don't seem to have the same kind of problems. Whether global warming is real or not is not what they were studying- nor was it whether it's man made or not.
I guess I just wanted to point that out lest anyone not read the article and get the idea that "global warming" as an idea was now in any serious jeopardy as a result of this study.
As is often the case in these threads we're talking about many different things. 1. global warming is real or it's not 2. global warming is caused by humans & 3. the link you posted (study with missing data) which states something like 'This is the rate at which we believe that globe will warm.' 2. or 3. could be totally bogus ideas and it has no effect on 1.
Also the answer from the study in question would likely be that the data they didn't keep is readily obtainable from the places they obtained it in the first place- weather stations around the world. I'm not defending that they dumped them, but it's likely that they can repeat this as those records wouldn't be gone..
"The data were gathered from weather stations around the world and then adjusted to take account of variables in the way they were collected. The revised figures were kept, but the originals — stored on paper and magnetic tape — were dumped to save space when the CRU moved to a new building."