Sentences with phrase «greater relative uncertainty»
There will always be uncertainty, as there will be greater relative uncertainty in our knowledge of past temperatures from» proxy indicators» such as tree - rings.
http://www.realclimate.org/ Not exact matches
However, there will always be uncertainties: lower economic growth, greater cost or other obstacles to unconventional gas production, higher achievements in energy efficiency, changes that improve the relative competitiveness of other fuels; but uncertainty can also work the other way.
Indeed, uncertainties in predicting the regional details of future climate change that would arise from following these pathways, and the even greater uncertainties that attend any assessment of the impacts of such climate changes, preclude any credible assessment of the relative benefits.
Based on an extensive literature review, we suggest that (1) climate warming occurs with great uncertainty in the magnitude of the temperature increase; (2) both human activities and natural forces contribute to climate change, but their relative contributions are difficult to quantify; and (3) the dominant role of the increase in the atmospheric concentration of greenhouse gases (including CO2) in the global warming claimed by the Intergovernmental Panel on Climate Change (IPCC) is questioned by the scientific communities because of large uncertainties in the mechanisms of natural factors and anthropogenic activities and in the sources of the increased atmospheric CO2 concentration.