BeAChooser
Banned
- Joined
- Jun 20, 2007
- Messages
- 11,716
There will have been a CO2-influence back in those halcyon days between the Wars (they were years of glorious summers and fruitful bountiness, outside the Dust Bowl) but insignificant. It's much more significant these days.
Yet the curve shows an almost the linear rise in sea level from 1920 to 2000? How can that be if the effect is much more significant now than in 1930 or 1940?
I'm ignorant of the local New York geology : how's the land-level behaving there? That's not something that can be taken for granted.
I think we can discount that as the reason for the increase in the level at the location I cited. Here's data from 23 gauges.
http://upload.wikimedia.org/wikipedia/en/0/0f/Recent_Sea_Level_Rise.png
Notice the linear increase from 1920 to 2000?
Here's the rise in sea level over the last 20,000 years or so:
http://upload.wikimedia.org/wikipedia/en/1/1d/Post-Glacial_Sea_Level.png
As you can see, sea levels rose a 100 meters in a relatively linear fashion over a 10,000 year period (that's 10 mm per year) without any input from man. Yet all of a sudden, we are DEFINITELY the culprit for a rise of 0.4mm per year the last 5 years? (sarcasm)
If the 0.5mm figure is typical, sea-levels were half a metre lower a thousand years ago, a metre 2000kya, two metres 4000kya. During all this time people have been digging harbours and generally living along coastlines. They would have noticed the difference. Inexorable sea-level rise would be ingrained in human culture, but it's not.
Here is the sea level rise over the last 8000 years:
http://upload.wikimedia.org/wikipedia/en/1/1e/Holocene_Sea_Level.png
Notice that between 7,000 and 4,000 years ago, when man wasn't producing much CO2, sea levels rose about 2.5 meters in a linear fashion ... that's an average of about 0.8mm per year. Notice that from 3,000 years ago to 2,000 years ago, sea level rose a meter ... 1.0mm per year. Yet Henry Ford wasn't to be born for another 2000 years. So why are you sure we are the culprit for a 0.4mm rise per year over a time span of only the last 5 years?
Try some common sense.
When your models don't take the sun into account and you are ready to jump off an economic cliff based on 5 years of data suggesting a 0.4mm per year rise in sea level when for the last 20,000 years, most of the time the sea levels were rising much faster than that, I wonder about your common sense.
You've taken twenty thousand years where seventeen thousand saw little or no sea-level rise
Was that your credibility I just saw flying out the window?