From Pierre Gosselin’s Notrickszone
A new paper authored by Reinhard Böhm of the Austrian Central Administration For Meteorology (ZAMG) refutes the notion that anthropogenic warming is causing an increase of climate extremes and making weather more variable and extreme.
Pressure – temperature – precipitation (Source ZAMG)
The paper uses the monthly resolved data of the HISTALP data collection, which provides 58 single series for three climate elements: air pressure, air temperature and precipitation, which start earlier than 1831 and extend back to 1760 in some cases.
The paper’s abstract writes:
The main goal is the analysis of trends or changes of high frequent interannual and interseasonal variability. In other words, it is features like extremely hot summers, very cold winters, excessively dry or wet seasons which the study aims at.”
The paper also concentrates on the recent three decades because “they are the first 30 years with dominating anthropogenic greenhouse gas forcing”.
Conclusion? No change!
WUWT reader Jimbo writes in Tips and Notes:
Extreme weather paper out. It’s worse than we thought! Head for the hills!
“The main goal is the analysis of trends or changes of high frequent interannual and interseasonal variability. In other words, it is features like extremely hot summers, very cold winters, excessively dry or wet seasons which the study aims at.”………………
We can show that also this recent anthropogenic normal period shows no widening of the PDF (probability density function) compared to the preceding ones………………
It shows that interannual variability changes show a clear centennial oscillating structure for all three climate elements in the region. For the time being we have no explanation for this empirical evidence.”
See also my compilation of extreme weather trends (not).
Floods – no increase in frequency, less intense
Extreme weather events – no trend
Global precipitation – no trends
Rate of sea level rise – deceleration over 80 years
Weird weather – no trends
Forest fires – decreasing frequency
Tropical Pacific sea level rise – fell
- Weather is climate, or loaded dice, or something (wattsupwiththat.com)
- Comment On Andy Revkin’s Post On May 11 2012 Titled “Varied Views On Extreme Weather In A Warming Climate” (pielkeclimatesci.wordpress.com)