Scientists opinion

Miscellaneous

A number of other national scientific societies have also endorsed the opinion of the IPCC:

• 
  American Astronomical Society^[99]
  
• 
  American Statistical Association^[100]
  
• 
  Canadian Council of Professional Engineers ^[101]
  
• 
  The Institution of Engineers Australia^[102]
  
• 
  International Association for Great Lakes Research^[103]
  
• 
  Institute of Professional Engineers New Zealand^[104]
  
• 
  The World Federation of Engineering Organizations (WFEO)
  

Non-committal

American Association of Petroleum Geologists

As of June 2007, the American Association of Petroleum Geologists (AAPG) Position Statement on climate change stated:
the AAPG membership is divided on the degree of influence that anthropogenic CO₂ has on recent and potential global temperature increases ... Certain climate simulation models predict that the warming trend will continue, as reported through NAS, AGU, AAAS and AMS. AAPG respects these scientific opinions but wants to add that the current climate warming projections could fall within well-documented natural variations in past climate and observed temperature data. These data do not necessarily support the maximum case scenarios forecast in some models.^[105]
Prior to the adoption of this statement, the AAPG was the only major scientific organization that rejected the finding of significant human influence on recent climate, according to a statement by the Council of the American Quaternary Association.^[13] Explaining the plan for a revision, AAPG president Lee Billingsly wrote in March 2007:
Members have threatened to not renew their memberships… if AAPG does not alter its position on global climate change... And I have been told of members who already have resigned in previous years because of our current global climate change position… The current policy statement is not supported by a significant number of our members and prospective members.^[106]
AAPG President John Lorenz announced the "sunsetting" of AAPG's Global Climate Change Committee in January 2010. The AAPG Executive Committee determined:
Climate change is peripheral at best to our science […] AAPG does not have credibility in that field […] and as a group we have no particular knowledge of global atmospheric geophysics.^[107]