Global warming

[Eric the Green]

(09-01-2017, 01:14 PM)X_4AD_84 Wrote:

(09-01-2017, 11:01 AM)Eric the Green Wrote: It seems your graph confirms my picture regarding the post-glacial melting. There is no debate that sea levels have risen in the past few decades, and this is accelerating. Measurements conducted by many scientific agencies are less subject to debate that just about anything. I think the figure is 8 inches. Let's see:

"Core samples, tide gauge readings, and, most recently, satellite measurements tell us that over the past century, the Global Mean Sea Level (GMSL) has risen by 4 to 8 inches (10 to 20 centimeters). However, the annual rate of rise over the past 20 years has been 0.13 inches (3.2 millimeters) a year, roughly twice the average speed of the preceding 80 years."
http://www.nationalgeographic.com/enviro...evel-rise/
https://www.jpl.nasa.gov/news/news.php?feature=4700

The measurement period referenced by those papers is too short to conclude much of anything. The rate varies considerably. There is a lot of noise in the system.

In any case, even without AGW, eventually, Miami will be inundated. AGW accelerates the inevitable. But, the activist factions within the scientific community will not emphasize that. They have an agenda, similar to yours. The (false) notion that sea level rise was 0mm per year or nearly so .... until .... A ... G ... W... is a powerful mental model. While I do not deny that AGW is a component of the equation, and, it does exacerbate sea level rise, it is not solely accountable for sea level rise. How much effort do we put in? When do we invest the effort? It is not cut and dried.

If you say so. I say it's pretty cut and dried. Stop fossil fuel use as fast as politically possible (since politics is what drags the transition and ONLY politics).

I'm not sure what sea level rise was before 1900, but if it existed, it was miniscule. I'm not sure how well it could have been measured between 1900 back to 10,000 years ago, but they know more or less, since they know the sea was lower 10,000 years ago. The coast of CA extended out a lot further, and the Bay as we know it didn't even exist before then. They seem to know that much.