.@realitydrop #climatehawks try flooding blogosphere comment zone. But will it matter? The online climate wars — which seem so momentous to those deeply dug in on various fronts — are taking place on the sharp end of a needle buried in a haystack of other societal concerns. Post is at Dot Earth.
Using nuclear power in place of fossil-fuel energy sources, such as coal, has prevented some 1.8 million air pollution-related deaths globally and could save millions of more lives in coming decades, concludes a study. The researchers also find that nuclear energy prevents emissions of huge quantities of greenhouse gases. These estimates help make the case that policymakers should continue to rely on and expand nuclear power in place of fossil fuels to mitigate climate change, the authors say (Environ. Sci. Technol., DOI: 10.1021/es3051197).]
Some question why I dinged Easter @realclimate release of Marcott et al FAQ as “irksome.” Here’s my reply to one critic:
Climate models challenged by PNAS paper showing Pacific & Atlantic cycles driving monsoon trends during recent warming (news release):
Bin Wanga, Jian Liu, Hyung-Jin Kim, Peter J. Webster, So-Young Yim, and Baoqiang Xiang
Prediction of monsoon changes in the coming decades is important for infrastructure planning and sustainable economic development. The decadal prediction involves both natural decadal variability and anthropogenic forcing. Hitherto, the causes of the decadal variability of Northern Hemisphere summer monsoon (NHSM) are largely unknown because the monsoons over Asia, West Africa, and North America have been studied primarily on a regional basis, which is unable to identify coherent decadal changes and the overriding controls on planetary scales. Here, we show that, during the recent global warming of about 0.4°C since the late 1970s, a coherent decadal change of precipitation and circulation emerges in the entirety of the NHSM system.
Surprisingly, the NHSM as well as the Hadley and Walker circulations have all shown substantial intensiﬁcation, with a striking increase of NHSM rainfall by 9.5% per degree of global warming. This is unexpected from recent theoretical prediction and model projections of the 21st century. The intensiﬁcation is primarily attributed to a mega-El Niño/Southern Oscillation (a leading mode of interannual-to-interdecadal variation of global sea surface temperature) and the Atlantic Multidecadal Oscillation, and further inﬂuenced by hemispherical asymmetric global warming.
These factors driving the present changes of the NHSM system are instrumental for understanding and predicting future decadal changes and determining the proportions of climate change that are attributable to anthropogenic effects and long-term internal variability in the complex climate system.