- Joined
- Apr 9, 2014
- Messages
- 18,596
- Reaction score
- 29,969
- Points
- 113
- Location
- The nearest Steelers bar.
Temperature changes over the past 25 years (a span every AGW advocate agrees is sufficient to show "climate," not weather):
So temperatures have increased by 0.2 degrees C over that span.
But how much of that is due to CO2 emissions? Research shows about 50%:
Note that the observed trend in HadCRUT4 surface temperatures is nearly cut in half compared to the CMIP5 model average warming over the same period, and the UAH tropospheric temperature trend is almost zero.
https://wattsupwiththat.com/2019/05/16/half-of-21st-century-warming-due-to-el-nino/
So man-made CO2 emissions account for approximately a 0.1 degree C temperature increase over the past 25 years - or about 0.4 degrees C per century. Just a tad below the 5 degrees projected by Hanson and other AGW alarmists as of 1988.
So temperatures have increased by 0.2 degrees C over that span.
But how much of that is due to CO2 emissions? Research shows about 50%:
Note that the observed trend in HadCRUT4 surface temperatures is nearly cut in half compared to the CMIP5 model average warming over the same period, and the UAH tropospheric temperature trend is almost zero.
https://wattsupwiththat.com/2019/05/16/half-of-21st-century-warming-due-to-el-nino/
So man-made CO2 emissions account for approximately a 0.1 degree C temperature increase over the past 25 years - or about 0.4 degrees C per century. Just a tad below the 5 degrees projected by Hanson and other AGW alarmists as of 1988.