Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the Evolution of U.S. Temperature Dynamics   Climate change is a massive multidimensional shift. Temperature shifts, in
particular, have important implications for urbanization, agriculture, health,
productivity, and poverty, among other things. While much research has
documented rising mean temperature \emph{levels}, we also examine range-based
measures of daily temperature \emph{volatility}. Specifically, using data for
select U.S. cities over the past half-century, we compare the evolving time
series dynamics of the average temperature level, AVG, and the diurnal
temperature range, DTR (the difference between the daily maximum and minimum
temperatures). We characterize trend and seasonality in these two series using
linear models with time-varying coefficients. These straightforward yet
flexible approximations provide evidence of evolving DTR seasonality and stable
AVG seasonality.

17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th