Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Volatility in atmospheric temperature variability   Using detrended fluctuation analysis (DFA), we study the scaling properties
of the volatility time series $V_i=| T_{i+1}-T_i|$ of daily temperatures $T_i$
for ten chosen sites around the globe. We find that the volatility is long
range power-law correlated with an e xponent $\gamma$ close to 0.8 for all
sites considered here. We use this result to test the scaling performance of
several state-of-the art global climate models and find that the models do not
reproduce the observed scaling behavior.

20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
18
The categories of this paper are: econ
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio