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originally posted by: bbracken677
a reply to: Rezlooper
Look at this graph and tell me what you think?
This graph shows the Pacific Decadal Oscillation, which tends to alternate between positive (warm, shown in yellow above) and negative (cool, shown in blue) phases every 20 to 30 years. Cool conditions have predominated since about 1998. (NCDC)
I forgot to include the description
The Pacific Decadal Oscillation (PDO) is often described as a long-lived El Niño-like pattern of Pacific climate variability (Zhang et al. 1997). As seen with the better-known El Niño/Southern Oscillation (ENSO), extremes in the PDO pattern are marked by widespread variations in the Pacific Basin and the North American climate. In parallel with the ENSO phenomenon, the extreme phases of the PDO have been classified as being either warm or cool, as defined by ocean temperature anomalies in the northeast and tropical Pacific Ocean. When SSTs are anomalously cool in the interior North Pacific and warm along the Pacific Coast, and when sea level pressures are below average over the North Pacific, the PDO has a positive value. When the climate anomaly patterns are reversed, with warm SST anomalies in the interior and cool SST anomalies along the North American coast, or above average sea level pressures over the North Pacific, the PDO has a negative value (Courtesy of Mantua, 1999)
I would suggest that you read through the last few pages. Tons of data presented. Then let me know what you think, please
originally posted by: bbracken677
a reply to: TDawgRex
Methane is the one thing that does not fit all the patterns, and as I stated in a previous post, it is the one thing that concerns me.
Given that temps in previous interglacials were higher than today, what makes this period different? Man is the only common denominator.
On the other hand, I have shown and can show more regarding how GHG's do not have the impact they are being represented as having. Rezlooper has shown how man is contributing, but at the same time one has to admit that unless a lot of new methane has been created since the last interglacial then something is funny. Most of the methane is coming from natural sources.
At 2.571 ppm and 400 ppm methane and co2 levels are still but a very small percentage of the makeup of our atmosphere... Consider that all the other gases, which are predominantly nitrogen, oxygen and argon, make up the roughly 999,597 ppm that is the balance.
Consider that glaciation has begun with co2 levels at multiple times our current level. I am not impressed with the GHG doom porn.