Friday Funny – Hansen's Horror Scopes

Global warming has been solved! Co2 is not as bad as previously thought!

Dr. James Hansen et al. – PNAS August 29, 2000
“A common view is that the current global warming rate will continue or accelerate. But we argue that rapid warming in recent decades has been driven mainly by non-CO2 greenhouse gases (GHGs), such as chlorofluorocarbons, CH4, and N2O, not by the products of fossil fuel burning, CO2 and aerosols, the positive and negative climate forcings of which are partially offsetting. The growth rate of non-CO2 GHGs has declined in the past decade. If sources of CH4 and O3 precursors were reduced in the future, the change in climate forcing by non-CO2 GHGs in the next 50 years could be near zero. Combined with a reduction of black carbon emissions and plausible success in slowing CO2 emissions, this reduction of non-CO2 GHGs could lead to a decline in the rate of global warming, reducing the danger of dramatic climate change. Such a focus on air pollution has practical benefits that unite the interests of developed and developing countries. However, assessment of ongoing and future climate change requires composition-specific long-term global monitoring of aerosol properties. ”
http://www.pnas.org/content/97/18/9875.abstract

Dr. James Hansen et al. – PNAS January 13, 2004
“Plausible estimates for the effect of soot on snow and ice albedos (1.5% in the Arctic and 3% in Northern Hemisphere land areas) yield a climate forcing of +0.3 W/m2 in the Northern Hemisphere. The “efficacy” of this forcing is ~2, i.e., for a given forcing it is twice as effective as CO2 in altering global surface air temperature. This indirect soot forcing may have contributed to global warming of the past century, including the trend toward early springs in the Northern Hemisphere, thinning Arctic sea ice, and melting land ice and permafrost.”
“We suggest that soot contributes to near worldwide melting of ice that is usually attributed solely to global warming. Measurements in the Alps reveal BC concentrations as large as 100 ppbw (34, 35), enough to reduce the visible albedo by ~10% and double absorption of sunlight (21).”
“The soot albedo effect operates in concert with regional warming in most of the world, hindering empirical distinction of climate and soot contributions. However, there has been little warming in China, including Tibet, over the past 120 years (Fig. 3), yet glaciers there are retreating rapidly (37).”
http://www.pnas.org/content/101/2/423.long

The troops seem to have gone into damage control, accusing us of misrepresenting climate science and Hansen. Response planned. See http://www.abc.net.au/unleashed/2722486.html

This man is switching horses, or a horse for a jackass. He will not have the guts, after his very noisy activities took him across too many lines, to simply say gee I may have been somewhat over the top. Its telling that the alarmists weren’t wrong in any case – those pesky models did it! Never turn your back on a model! Also, even if its global cooling, its human’s fault, and its still the death trains with their cargo of aerosols hiding in evil coal. In fact really “I haven’t been wrong at all.

Gary Pearse says:

May 21, 2011 at 4:39 am
Never a truer word said. Hansen is trying to gently dig his way out of his FAILED scenarios – A, B and C. ;O) Expect more fun and hilarity over the coming few years.