The paper notes that this occurred during a period in which human population increased by 37%, the level of atmospheric CO2 increased by 9%, and the Earth “had two of the warmest decades in the instrumental record.”  attributes this increased productivity to “higher temperatures, longer temperate growing seasons, more rainfall in some previously water-limited areas,” and more sunlight.
While it was widely-believed that ONC would eliminate the CPO position to shift priorities after the departure of Deven Mc Graw in the fall, national coordinator Donald Rucker named an agency veteran to the post on Wednesday.
as “an increase in the average temperature of the Earth’s atmosphere,” either by “human industry and agriculture” or by natural causes like the Earth has “experienced numerous” times “through its history.” * Some writers use the phrases “global warming” and “climate change” to mean temperature changes strictly caused by human activity.   Other writers use adjectives such as “man-made” and “anthropogenic” to distinguish between human and non-human causes.  (“Anthropogenic” means “of human origin,” and “AGW” stands for “anthropogenic global warming.”) * Just Facts’ Standards of Credibility require the use of “language that is precise and unambiguous.” Hence, when human causes are stated or implied, this research uses terms like “man-made” and “human-induced.” * The greenhouse effect is a warming effect caused by certain gases that retain heat from sunlight. Without such gases, the average surface temperature of the Earth would be below freezing, and as explained by the , “life, as we know it, would not exist.” The global warming debate is centered upon whether added greenhouse gases released by human activity will overheat the Earth and cause harmful effects. * Human activities currently release about 37 billion metric tons of CO2 per year, which equates to about 5% of natural CO2 emissions.
It shows a “Medieval warm period” that was warmer than the present era and a “Little Ice Age” that was cooler.
The report states that: some of the global warming since 1850 could be a recovery from the Little Ice Age rather than a direct result of human activities.
Mc Carthy, a Harvard oceanographer and IPCC co-chair, saw a mile-wide stretch of open ocean at the North Pole while serving as a guest lecturer on an Arctic tourist cruise.