Science & Environmental Policy Project - Rebuttals

Rebuttals

SEPP's critics offer the following rebuttals to its claims:

• The satellite record shows that warming is occurring. As of mid-2007, the rise is between 0.14 and 0.184 degree Celsius per decade, depending on which satellite record is used. (See Satellite temperature measurements.)
• Computer climate models have predicted 20th century temperature trends accurately.
• Scientific evidence indicates that recent global warming is caused by human activity. Patrick Michaels, a well-known "skeptic", has said that it is "proven humans are warming the atmosphere" . (See Attribution of recent climate change.)
• The ban on CFCs did not cause any substantial economic harm, and has been effective. Increases in surface UV are inferred (see ozone depletion).
• Primary scientific data was collected in Punta Arenas, Chile, using a Brewer spectro-photometer, and "These results indicate that during the time when ozone depletion in the Antarctica takes place, an increase in UV-B radiation reaching the Earth surface affected the American continent at latitudes about parallel 50° S."
• In response to NASA research confirming 2010 tied for the warmest year on record, James Hanson, Chief Climate Scientist and Director, Goddard Institute for Space Studies at NASA, stated: "if the warming trend continues, as is expected, if greenhouse gases continue to increase, the 2010 record will not stand for long."