Flame — HabitableZone

Flame » in reply to re: When

re: When
gbaikie — (archived)

"You obviously have a comprehension problem.

It doesn't matter WHEN the ice core measurements were made, but WHICH TIME they relate to."

It does matter in regard to Arrhenius. Unless he has a time machine.

"Suffice it to say that very accurate records exist for CO2 levels in the atmosphere for the past several hundred thousand years."

Perhaps this is true, but it wasn't what I was talking about.

But since you brought it up. I have wondered about how accurate this ice core records are. Has anyone taken very recent core of last two decades and measured our current CO2 levels with that ice core record? I don't see how using ice record record can be as accurate as the measurements taken at Mauna Loa. Do ice core note the seasonal fluctuation of global CO2?

In addition is there different results of ice cores compared other ice core on different locations [such as arctic and Antarctic].
There are also various questions about record being altered thru time due varying seasonal conditions, compression, trans-migration of gases, etc.
But if the question is whether CO2 record is fairly accurate to somewhere around +/- 20 ppm or good enough for our purposes. I don't have a lot doubt in this regard.
Nor do I think it matters much if Ice core wasn't within +/- 50 ppm, it shows a pattern or relationship.
It would be interesting if ice core could measure momentary period of increased CO2- perhaps indicating local events in relation to the ice core. Or perhaps great forest fires.

"Are you asking when scientists first became aware of the problem, and what they then did about it? That's a different question."

I believe Arrhenius was one of the first to bring up the idea.

Please ask your FULL question, not the loaded half-question...

Ok. How accurate could Arrhenius or other scientists at that time be in measuring global CO2. Or even local CO2.

pwokenyaw directed Johannes regarding an experiment {which wasn't actually a experiment} done in 1896.

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