A twist to the Global Warming Debate

[rgarling]

Originally Posted by eridanus

There has been no increased solar activity since the late 70s.

NASA studies show an increase in solar output of .05% per decade.

The satellite data (RSS MSU) show essentially flat temps (slight upward bias) over the past 30 years.

Channel TLT
1979
2008-02
29
0.178 K/decade
Channel TMT
1979
2008-02
29
0.114 K/decade
Channel TTS
1987
2008-02
21
0.028 K/decade
Channel TLS
1979
2008-02
29
-0.314 K/decade

[eridanus]

Originally Posted by rgarling

NASA studies show an increase in solar output of .05% per decade.

The satellite data (RSS MSU) show essentially flat temps (slight upward bias) over the past 30 years.

Ok. That specific # disagrees with the Max Planck results but we'll go with it. NASA also says this,

"The pattern of modeled surface temperature changes induced by solar variability is well correlated with observed global warming over the first half of the 20th century, but not with the more rapid warming seen over the past three decades."

NASA GISS: Science Briefs: Solar Variability, Ozone and Climate

The IPCC acknowledges that 1/2 of the gain* can be attributed to solar gain. What about the other half?


As far as the RSS MSU data, you're right. It's a slight upward trend. Thus, global warming.


Edit: *1/2 of the gain over the past ~100 years

[lets-retire]

Half of the gain is only .3 degrees above normal. That is hardly a major change.

[eridanus]

nm

[eridanus]

nm