Sentences with phrase «individual proxies»

In light of the comments by Craig Loehle and Willis Eschenbach, we decided to update our original draft to include sections, • Discussing the different reconstruction methods used by the 19 proxy - based estimates, and their relative advantages / disadvantages • Providing a more detailed discussion of the lack of consistency between individual proxies, and the importance of carrying out rigorous «sensitivity studies», including a discussion of Willis Eschenbach's cluster analysis.

There are few that try to calibrate individual proxies to precipitation first then combine to estimate past global precipitation.

But regardless of the reasons you can take away many of the individual proxies and the basic picture remains unchanged — but of course, the more you remove the less information you have, and eventually, you don't have any information at all.

If the temperature anomalies for the individual proxy sites can be compiled this way, why can't they be compared to the temperature anomaly data from any of the MSU data sets.

In this graph, the black dots connected with lines are the individual proxies interpolated onto a 20 - year time grid (as per the Marcott procedure).

Now let's look at the individual proxies from Marcott et al., aligned over the common period (5500 to 4500 BP), which go at least as far as the year 1800 (click the graph for a larger, clearer view):

Below the individual proxies is their average, magnified and offset so that it doesn't overlap the proxies themselves, but does show how the average changes over time.

Furthermore, the individual proxies can be used to address the question of whether the 20th century is the warmest of the 2nd millennium locally.

The Marcott paper also references the individual proxies for viewing and shows, without comments from the authors, just how incoherent the trends are in those proxies and, as a result, how difficult it is to visualize that stacking these proxies is going to produce a meaningful result.

No need to verify the individual proxies.

Do any of the individual proxies look as smooth?

Each principal component is a weighted combination of the individual proxy series.

If this component is used by itself or in conjunction with a small number of unaffected components to perform reconstruction, the resulting temperature reconstruction may exhibit a trend, even though the individual proxies do not.

The basic idea behind principal component regression is to replace the predictors (i.e., individual proxies) with a smaller number of objectively determined variables that are linear combinations of the original proxies.