About: http://webisa.webdatacommons.org/440436633

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The EPA says that the atmospheric greenhouse effect is due to the same causes as in real greenhouses, so according to these sources, the 33K must mainly be due to convection, and GHG plays only a minor role.
http://www.w3.org/ns/prov#wasQuotedFrom	wattsupwiththat.com