Michael Mann accuses President Trump of planning to tell the truth about climate.
“Trump’s next climate move: Show global warming benefits humanity”
In 1974, NOAA explained how a warmer climate benefits humanity.
“Annual average temperatures over the Northern Hemisphere increased rather dramatically from about 1890 through 1940, but have been falling ever since. The total change has averaged about one-half degree Centigrade, with the greatest cooling in higher latitudes. A drop of only one or two degrees Centigrade in the annual average temperature at higher latitudes can shorten the growing season so that some crops have to be abandoned. There is reason to believe, for example, that rice was once grown far north of its present boundary in parts of Asia.
According to British meteorologist Hubert Lamb, the average growing season in England is already two weeks shorter than it was before 1950. Since the late 1950’s, Iceland’s hay crop yield has dropped about 25 percent, while pack ice in waters around Iceland and Greenland ports is becoming the hazard to navigation it was during the 17th and 18th centuries.
At lower latitudes, as in the Sahel, the amount of precipitation available during certain phases of the growing season is critical to food production. The kind of climatic variation now in progress includes changes in the tracks of precipitation-producing storms through major grain-producing regions.
In India, for example, before the global warming trend of 1890-1940, severe drought struck about once every four years. With the warming, however, and more abundant monsoon rains, drought came only once every 18 years or so, greatly increasing India’s grain production. Some climatologists think that if the current cooling trend continues, drought will occur more frequently in India—indeed, through much of Asia, the world’s hungriest continent.”
