Sentences with phrase «uncertainties associated with greenhouse»

«It is imperative that utility planners recognize the risks and uncertainties associated with greenhouse gas emissions and identify a reasonable, cost - effective approach to addressing them,» stated the UTC in the directive.

Not exact matches

However, a new study by VTT and the Finnish Meteorological Institute suggests that the uncertainties associated with climate engineering are too great for it to provide an alternative to the rapid reduction of greenhouse gas emissions.

In the face of uncertainty, Tim is invoking the precautionary principle with respect to the risks of aggravated land - related greenhouse gas emissions associated with biofuels.

Note that this figure illustrates the uncertainties arising from different greenhouse gas scenarios and climate models, but almost certainly underestimates the uncertainty associated with carbon - cycle feedbacks.»

Figure 1: Gillett et al. attributable temperature changes due to greenhouse gases (red), other anthropogenic effects (green), and natural effects (blue) over each of the periods indicated in °C, based on the standard regression over the 1851 — 2010 period, with their associated uncertainties (vertical black lines).

Dr. Stanton's analysis identifies a range of possible emission rates associated with the project, taking into account uncertainty regarding methane leak rates and the lifecycle contribution of natural gas to greenhouse gas concentrations in the atmosphere.

Key uncertainties involve: 1) the degree to which increases in evapotranspiration versus permafrost thaw are leading to drier landscapes; 2) the degree to which it is these drier landscapes associated with permafrost thaw, versus more severe fire weather associated with climate change, that is leading to more wildfire; 3) the degree to which the costs of the maintenance of infrastructure are associated with permafrost thaw caused by climate change versus disturbance of permafrost due to other human activities; and 4) the degree to which climate change is causing Alaska to be a sink versus a source of greenhouse gases to the atmosphere.

And anyways, is the solar uncertainty (we understand the sign) really so much more greater than that associated with the effects of clouds on climate (see my recent post The cloud climate conundrum), where even the sign of the feedback is uncertain and the magnitude of cloud forcing swamps greenhouse gas radiative forcings.

Assumptions and uncertainties associated with climate scenarios (Randall et al., 2007) are not considered here, other than to identify the greenhouse gas emission trends or socio - economic development pathways (e.g., SRES, Naki?enovi?