The bottom line, according to a group of experts not involved in any of these studies: Scientists don't know much about how sunlight interacts with our planet, and until they understand it, they can't accurately predict any possible effects
of human activity on climate change.
The Division conducts research on the longâ $ term
impact of human activities on climate and natural resources using a research strategy that starts with measurements and carries that information into models, with a goal of improving the nation's ability to predict climate change.
Are you saying that the aggregate and cumulative external effects
of human activities on climate change are negligible for the relevant time horizon (ie until life on earth stops for reasons not under the control of humans) or are you saying you disagree with all or some of the quantifications methods available at present?
The bottom line, according to a group of experts not involved in any of these studies: Scientists don't know much about how sunlight interacts with our planet, and until they understand it, they can't accurately predict any possible
effects of human activity on climate change.
For example, the Intergovernmental Panel on Climate Change 2007 Fourth Assessment Report, which synthesizes global scientific findings about climate change, states: «Since the start of the industrial era (about 1750), the overall effect
of human activities on climate has been a warming influence.
These results imply a greater potential than previously thought for fossil fuel industry efficiency improvements to mitigate the effects
of human activity on the climate.
Dr Peter Stott, who leads the Met Office's climate monitoring and attribution unit, told us recently the idea that the sun could override the effects
of human activity on the climate is at odds with the broader scientific understanding.
Pointing out how hot 1934 was in the contiental US is a good way to stress the adverse effects
of human activity on the climate and the weather.
«Fact: Most scientists don't believe the effect
of human activities on climate is sufficiently well understood to make predictions about future climate conditions, and many believe the modest warming that may occur would be beneficial.»
Changes in the frequency of extreme events coinciding with global warming have already been observed, and there is increasing evidence that some of these changes are caused by the impacts
of human activities on the climate.
The main objectives, set for the WCRP at its inception and still valid today, are to determine the predictability of climate and to determine the effect
of human activities on climate.
The two overarching objectives of the WCRP are: to determine the predictability of climate; and to determine the effect
of human activities on climate.
«Science is now in the position to acknowledge the influence
of human activities on the climate.
«The effect
of human activity on our climate is no longer subtle.
Mitigating the negative impact
of human activity on the climate is a very important value in our home - more important than personal goals.»
More precisely, we ask whether the impact
of human activities on the climate is observable and identifiable in the instrumental records of the last century - and - a-half and in recent paleoclimate records?
we ask whether the impact
of human activities on the climate is observable and identifiable in the instrumental records of the last century - and - a-half and in recent paleoclimate records?