Image:Solar Forcing GISS model.gif

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Solar_Forcing_GISS_model.gif‎ (3KB, MIME type: image/gif)

Solar forcing used in NASA GISS SI2000 simulations.


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Source: http://www.giss.nasa.gov/data/simodel/solar.irradiance/


--- Is there something wrong with that NASA data? The page it's link from: http://en.wikipedia.org/wiki/Solar_variation#Solar_variation_theory

...clearly shows that solar variation over the last 30 years is on the order of 0.1% of solar output, or 1.3 W/m^2 on the 1366 W/m^2 solar average. But this plot shows an approximately 0.1 W/m^2 variation in solar forcing. That's a difference of an order of magnitude. This is in fact an important number to get right, since the average global temperature appears to have risen about 0.3% over the past century. This plot suggest that solar forcing has increase ~0.2%, but if it is off by an order of magnitude then the solar forcing alone starts to look like the majority contributor to the measured 0.3% temperature increase (assuming no positive feedbacks, in which case it could conceivably account for all global warming).

~~mjd 11:00 EST 17 November 2006

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  • (del) (cur) 21:27, 16 February 2005 . . SEWilco (Talk | contribs) . . 566×118 (2,393 bytes) (Solar forcing used in NASA GISS SI2000 simulations. {{PD-USGov-NASA}} Source: http://www.giss.nasa.gov/data/simodel/solar.irradiance/ )

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