Sentences with phrase «centennial scale trend»

to remove the centennial scale trend...», not to remove the «estimated anthropogenic footprint».

Not exact matches

The ability of a sampling method to accurately measure seasonal variability does not indicate that the method is valid for estimating trends over centennial time scales.

It's quite difficult to judge on Wikipedia plot, but Esper and Moberg reconstructions seem to have the same trends at centennial scale (even if Esper's one have globally more amplitude than all others).

The suggested synchroneity of tropical and North Atlantic centennial to millennial variability (de Menocal et al., 2000; Mayewski et al., 2004; Y.J. Wang et al., 2005) is not common to the SH (Masson et al., 2000; Holmgren et al., 2003), suggesting that millennial scale variability can not account for the observed 20th - century warming trend.

Comparing decadal - with centennial - scale «trends» in a process that contains important decadal - scale oscillations is not an example of analytically robust science.

Natural variability periodically augments and offsets any long term forced trend, with roughly zero net effects on a centennial scale.

Previous analyses of Coppermine and Thelon ring - width data, in combination with ring width data from 2 other sites in the western NWT (R. Wilson unpublished report, 2005; D'Arrigo et al., 2006) revealed that the Regional Curve Standardization (RCS) method, a potentially useful technique for retaining centennial - scale climatic trends in tree rings (Briffa et al., 1992; Cook et al., 1995; Esper et al., 2002), did not appear to preserve any additional low - frequency information at these sites when compared to more traditional techniques.

Therefore, it is important to know its variability in order to study large scale HMF dynamics and the heliospheric modulation of cosmic rays on long time scale including the centennial trends.

Ever - shorter pauses in the warming trend are plausible but the forced trend will dominate on the centennial scale and that's what matters.

Which brings us back to the mainstream scientific position, which is that the forced trend will dominate on a centennial scale.

Under increasing GHG forcing the warming trend will dominate on a centennial scale, exactly as predicted by just about everyone, including Tsonis.

The Holocene in general shows both a long - term trend (cooling) and millennial and centennial / multidecadal time - scale variability.

This big data approach will give us the tools necessary to investigate interannual - to centennial - scale variability, as well as possible secular trends in hydroclimate over the past 2,000 years.

Our results show that repeated clusters of volcanic eruptions can induce a net negative radiative forcing that results in a centennial and global scale cooling trend via a decline in mixed - layer oceanic heat content.

If there are centennial internal variations — and looking back over the holocene it looks to me there are — then «reversions to mean» over a centennial scale will look like a trend on which shorter decadal length variations will be superimposed.

The bicentennial trend lines clearly diverge from the past 30 or 50 or hundred years, and the most closely fitting explanation for this behavior is anthropogenic causes shifting the trends leaving only a shadow of natural variability superimposed on the sharp centennial scale rise, at about an order of magnitude smaller amplitude than the changes associated with GHGs and dampened by man - made aerosols.

Figure 6.10 b illustrates how, when viewed together, the currently available reconstructions indicate generally greater variability in centennial time scale trends over the last 1 kyr than was apparent in the TAR.