Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Atmospheric physics and Atmospheres of Solar-System bodies   The physical principles governing the planetary atmospheres are briefly
introduced in the first part of this chapter, moving from the examples of Solar
System bodies. Namely, the concepts of collisional regime, balance equations,
hydrostatic equilibrium and energy transport are outlined. Further discussion
is also provided on the main drivers governing the origin and evolution of
atmospheres as well as on chemical and physical changes occurring in these
systems, such as photochemistry, aerosol condensation and diffusion. In the
second part, an overview about the Solar System atmospheres is provided, mostly
focussing on tropospheres. Namely, phenomena related to aerosol occurrence,
global circulation, meteorology and thermal structure are described for rocky
planets (Venus and Mars), gaseous and icy giants and the smaller icy bodies of
the outer Solar System.

19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex