SCIENTIFIC STUDY OF GLOBAL D12 AND C13:
INCREASED CO2 LEVELS ARE A RESULT OF NATURLA GLOBAL WARMING AND NATURAL CLIMATE CHANGE AND NOT THE CAUSE.
SO SAYS PROFESSOR MURRY SALBY, Chair of Climate, Macquarie University:
Carbon dioxide is emitted by human activities as well as a host of natural processes. The satellite record, in concert with instrumental observations, is now long enough to have collected a population of climate perturbations, wherein the Earth-atmosphere system was disturbed from equilibrium. Introduced naturally, those perturbations reveal that net global emission of CO2 (combined from all sources, human and natural) is controlled by properties of the general circulation – properties internal to the climate system that regulate emission from natural sources. The strong dependence on internal properties indicates that emission of CO2 from natural sources, which accounts for 96 per cent of its overall emission, plays a major role in observed changes of CO2. Independent of human emission, this contribution to atmospheric carbon dioxide is only marginally predictable and not controllable.
IOW: AGW = TFBS.