Most of the GW "scientists" ARE physicists (as opposed to real experts on atmospheric science and other areas that the physicists have muscled into). And contrary to "Andy Jackson's" assertion, the American Physical Society has been right in the thick of promoting AGW and diddling the peer review process.
This is exactly backwards. A former president of the APS, Cherry Murray along with some members have tried to do this. It led to a rebellion of a very distinguished cadre of members of the APS who pointed out, quite publicly, the fraud that was being committed. Murray's response was to try to investigate who had leaked the email list. Her year's term ended with her being regarded as something of a disgrace.
Most members of the APS are agnostic on the subject of GCC, believing that the issue is certainly worth study, meaning developing better physical models and computer simulations and integrating all the available sensors (land based, oceanographic, satellites, etc) to see if we can figure out if anything is going on at all.