What I need you to do is travel to a smoggy city. That's all. Just drive to, say, Los Angeles and take a look. You can SEE the smog in the air.
Now drive north from L.A. to San Luis Obispo. That's a drive of around 3 hours (two hours if you drive the way I do). What will you see? You will see clear, smog-free air.
Detailed measurements of atmospheric composition bear this out. The air around cities is higher in sulfides, nitrates, carbon dioxide, carbon monoxide--and lower in oxygen. The air in suburban areas a hundred miles away is not. Case closed.
Which is just as easily explained by constant gas exchange and different consumption/production rates, which leads to a flucutating equilibrium. Nothing points at your claimed purely local poroduction/consumption.
And if you were right, how would you explain the fact that dust falling with the rain from the clouds in the Amazon basin can be shown to originate from the Sahara? Same as the dust born by the famous mistral winds in southern France? If wind can move dust, sure as hell is hot the air itself moves.
Ergo: you are wrong.
Odd. There goes BasketCase saying we can measure gas concentrations around cities accurately.....well, here's the reason why. We can measure gases near cities accurately because cities are full of people and you don't have to drive a thousand miles to get samples.
Do you want to imply that scientists are too stupid or lazy to collect samples elsewhere but in big cities?
Your arguments here are degenerating faster than you can type new ones - are you trolling?
In order to measure actual planetwide gas levels (i.e. to find out whether worldwide CO2 levels are actually going up) you need to measure millions of locations EVERYWHERE on the planet AT THE SAME TIME. I mean everywhere. Cities and rural areas, deserts and tundra. And also the oceans.
Nonsense - you would be correct if your local gas theory was cirght, but it is BS, so this is BS as well.
Which we are not doing. A fairly common claim by global warming doubters is that we're doing too much measuring near cities, thereby producing bogus results.
And that claim is bogus, and has been addressed about a gazillion times. Why does ID and creationism come to mind here? Oh, I know - because of the similarity in debate style! GW deniers use the same tactics employed by evolution deniers
If forest cover is going down and plant mass worldwide is declining......
......then planetary oxygen content should be going down.
Jumping to conclusions here, are you? Forest cover going down may have other effects that could increase O2 content.
But it's not. It's clearly going down in cities--but nowhere else.
So the overall avergae IS going down - qed!
You will not explain it because the only explanation dumps global warming theory on its head.
Your predictions are not really up to speed today - I already explained it
Here's the dirty little secret: if plant mass is going down but oxygen content is not, then either some new, undiscovered source must be producing oxygen (ALIENS!!!) or the few plants left on Earth are producing oxygen faster.
You said O2 is going down.... what now? Is it going down, or isn't it?
Meanwhile, CO2 disperses into that surrounding area and gets absorbed by happy plants who are growing big and fat on all the extra food.
Please, it starts getting rather repetitive: where are those mystery plants that grow so much bigger, or denser, or faster? Where is the 100-feet-high corn? The new forests covering the former plains of the West? The monster cabbages large enough to drive a rail tunnel through?
Where is the additional plant matter? Given the trillions of tons of fossil CO2 we blew into the atmosphere there should be whole countries overrun by new forests!