Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chaotic response of global climate to long-term solar forcing
  variability   It is shown that global climate exhibits chaotic response to solar forcing
variability in a vast range of timescales: from annual to multi-millennium.
Unlike linear systems, where periodic forcing leads to periodic response,
nonlinear chaotic response to periodic forcing can result in exponentially
decaying broad-band power spectrum with decay rate T_e equal to the period of
the forcing. It is shown that power spectrum of a reconstructed time series of
Northern Hemisphere temperature anomaly for the past 2,000 years has an
exponentially decaying broad-band part with T_e = 11 yr, i.e. the observed
decay rate T_e equals the mean period of the solar activity. It is also shown
that power spectrum of a reconstruction of atmospheric CO_2 time fluctuations
for the past 650,000 years, has an exponentially decaying broad-band part with
T_e = 41,000 years, i.e. the observed decay rate T_e equals the period of the
obliquity periodic forcing. A possibility of a chaotic solar forcing of the
climate has been also discussed. These results clarify role of solar forcing
variability in long-term global climate dynamics (in particular in the unsolved
problem of the glaciation cycles) and help in construction of adequate dynamic
models of the global climate.

17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org