An awful lot of disagreement with mainstream climate science, so many mentions of decades of cooling, none of them serious. (realclimate.org)
Two decades of cool weather, followed by almost 2 decades of warm weather. (fabiusmaximus.com)
Those previously beneficial rising temperatures and atmospheric carbon dioxide levels during the 1930s were followed by about three decades of cooling which began in the 1940s. (cfact.org)