his warming is caused almost entirely by the increase in human generated greenhouse gasses and the positive (not positive in a good way) feedbacks caused by that.

On a minor semantic note, that’s why I prefer the terms escalating feedback and stabilising feedback instead of positive and negative which tend to have misleading connotations.

I also think the term Global Overheating is better than Global Warming for much the same reason.

Another great article here – thanks Greg Laden.

Scary thing, well, one of many scary things here is how much power the Flat Earthers aka Climate Deniers have in key positions in the USA and sadly with our govt here in Oz too – as the Bad Astronomer Phil Plait notes here :

http://www.slate.com/blogs/bad_astronomy/2015/05/07/lamar_smith_more_climate_change_denial.html

Which is depressing really.

Ah, Thanks Greg – very helpful.

So the net result of the review of all of the studies suggests that since 1850, the great bulk of warming is anthropogenic, and in recent years, reduced insolation has resulted in the measured warming as being somewhat over 100% anthropogenic, that is, the earth would naturally show a slight cooling trend at this time.

My original question had to do with whether humans create MOST of the warming, or ALL of the warming plus a scoche – but I guess it depends on the timeframe examined. Either way, way too much of US and not nearly enough of NATURE.

http://www.skepticalscience.com/a-comprehensive-review-of-the-causes-of-global-warming.html

http://skepticalscience.com/jones-2013-attribution.html

Thank you for the link. Darn it, there was a more recent paper just… nine months ago if I recall correctly. The human-caused forcing was retained and the TSI forcing was removed from GLB.Ts+dSST, and the linear trend increased by around 16% for the previous 30 years.

Oh, and if I recall correctly, two of the previous three massive volcanism events were also removed, adding another 3% or so.

That’s the problem with reading, literally, more than a dozen papers a day on climate: the sources all run together. My feeble brain can remember the highlights, but not the details. In my defense, I’m a cattle rancher, not a scientist! 🙂 Oh, wait, that’s what senators say….

http://88.167.97.19/albums/files/TMTisFree/Documents/Climate/Solar_trends_and_global_warming_2009_Benestad_Schmidt.pdf

The actual value is, um…. 116% of the GISS trend. That is, natural variation in the sun, which is a negative (cooling) forcing is about 16% of humanity’s warming tend. I wish I knew where I read that….