Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Earth's Equilibrium Climate Sensitivity and Thermal Inertia   The Earth's equilibrium climate sensitivity has received much attention
because of its relevance and importance for global warming policymaking. This
paper focuses on the Earth's \emph{thermal inertia time scale} which has
received relatively little attention. The difference between the observed
transient climate sensitivity and the equilibrium climate sensitivity is shown
to be proportional to the thermal inertia time scale, and the numerical value
of the proportionality factor is determined using recent observational data.
  Many useful policymaking insights can be extracted from the resulting
empirical quantitative relation.

25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ