Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamical anomalies in terrestrial proxies of North Atlantic climate
  variability during the last 2 ka   Recent work has provided ample evidence that nonlinear methods of time series
analysis potentially allow for detecting periods of anomalous dynamics in
paleoclimate proxy records that are otherwise hidden to classical statis- tical
analysis. Following upon these ideas, in this study we systematically test a
set of Late Holocene terrestrial paleoclimate records from Northern Europe for
indications of intermittent periods of time-irreversibility during which the
data are incompatible with a stationary linear-stochastic process. Our analysis
reveals that the onsets of both the Medieval Climate Anomaly and the Little Ice
Age, the end of the Roman Warm Period and the Late Antique Little Ice Age have
been characterized by such dynamical anomalies. These findings may indicate
qualitative changes in the dominant regime of inter-annual climate variability
in terms of large-scale atmospheric circula- tion patterns, ocean-atmosphere
interactions and external forcings affecting the climate of the North Atlantic
region.

22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
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The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con