Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A non arbitrary definition of rain event: the case of stratiform rain   A long standing issue in Hydrology is the arbitrariness of the rain "event"
definition. In this manuscript, we show that 1) the event definition resting on
the occurrence of a minimum rainless period and the one resting a sequence of
consecutive wet intervals are statistically equivalent. 2) In the case of
stratiform rain, a non arbitrary definition of rain event is possible. The
dynamical properties of stratiform rain indicate the range [1.5,4] h as the
proper one for the choice of a minimum rainless period for Chilbolton, UK. 3)
The intra event dynamical variability is "described" by an alternate sequence
of quiescent and active phases.

23
The categories of this paper are: solv-int
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc