Sentences with phrase «substantial uncertainties remain»

While substantial uncertainties remain as to the precise consequences of this increase and consequent temperature rise, there is reason to believe many of the effects will be quite negative.

In Process and Reality, the account is carried much farther, although substantial uncertainties remain.

Despite advances since the TAR, substantial uncertainty remains in the magnitude of cryospheric feedbacks within AOGCMs.

Not exact matches

«There remain real and substantial uncertainties about the pace and eventual outcome of [international] negotiations.

Rising sea levels are certain in a warming world, but there is still substantial uncertainty about the extent of the increase in this century, mainly because the dynamics that could erode the ice sheets of Greenland and Antarctica remain poorly understood.

Previous research has found substantial benefits associated with commodity investments, but there remains considerable uncertainty regarding the consistency and general applicability of those benefits for equity investors.

The follow - up to MBH98 by Mann et al (1999) was entitled «Northern Hemisphere Temperatures During the Past Millennium: Inferences, Uncertainties, and Limitations» (italics added for emphasis), and indeed emphasized the substantial remaining uncertainties in proxy - based estimates of Northern Hemisphere temperature change in paUncertainties, and Limitations» (italics added for emphasis), and indeed emphasized the substantial remaining uncertainties in proxy - based estimates of Northern Hemisphere temperature change in pauncertainties in proxy - based estimates of Northern Hemisphere temperature change in past centuries.

Unlike the formerly - glaciated regions of the Northern Hemisphere, 98 % of Antarctic bedrock remains covered by ice and the ice sheet edge is fringed by extensive ice shelves; this hampers the collection of data on ice history and introduces substantial uncertainty in reconstructions.

The role of CO2 remains substantial, with acknowledged uncertainties about the exact quantitation.

As I have pointed out before, it seems to me that a fair evaluation of climate models is impossible when there remains vast uncertainty in aerosol forcing (direct and indirect), and substantial uncertainty in cloud effects.

These observations should be considered in the testing of cloud parameterizations in climate models, which remain sources of substantial uncertainty in global warming prediction.»