Climate Regime Shifts of the Past Four Centuries

CO2 Science

The nine researchers conclude that their analysis "suggests that the 1976 transition was not unique in terms of magnitude." In addition, the recurring nature of the climate regime shifts suggests that they are natural non-anthropogenic-forced phenomena that have nothing to do with the historical increase in the air's CO2 content. This conclusion is particularly noteworthy in light of the fact that the study of [] Seidel and Lanzante (2004) suggests, in their words, that "it is reasonable to consider most of the warming during 1958-2001 to have occurred at the time of the climate 'regime shift,' modeled here at the start of 1977." Consequently, the complementary findings of these two studies do much to relieve anthropogenic CO2 emissions of responsibility for the global warming of the last fifty or more years.