Readers of this blog have brought to my attention certain things alleged during the (just ended) 24 hours of Al Gore. Because of all of our new readers (thank you!) let me summarize the science of some of things brought up as “major concerns” and why I do not view ‘global warming’ as a major environmental problem.
Temperatures Continue to Warm
No, they do not. Atmospheric temperatures peaked in 1998 and have showed no warming since.
The more important metric of earth’s temperature is ocean heat content. It has been stable since about 2003:
It is not correct to say that “earth’s temperatures are rising.” They are not.
|“sea levels are rising”|
For some reason, when I go to YouTube to capture the discussion about accelerating sea levels so I can repost it here, the video skips past that part of the discussion. So, you’ll just have to take my word for it that the panel discussed a half meter rise in the next 50 years.
There is no evidence that sea level rise is accelerating.
|University of Colorado|
In order for sea levels to rise half a meter in the next 50 years, the rate of increase would have to more than double. There is no sign that will occur. Here is the more recent data which shows sea levels are falling.
|sea level has been falling the past year (purple circle)|
There is absolutely no sign of an acceleration in sea level rise.
The Computer Models That Forecast “More Extreme Weather”
The computer models have consistently forecast too much warming over the last 20 years and have shown little or no skill at forecasting regional trends. For a discussion go here and here.
As documented on this blog on numerous occasions, hurricane numbers and intensity are trending down not up.
There is no evidence the weather is becoming more extreme and the computer models have no skill at making those types of predictions.
So, if you are concerned about these topics due to comments made during the event, you can rest easy.