Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A new tool for predicting the solar cycle: Correlation between flux
  transport at the equator and the poles   The magnetic flux cancellation on the Sun plays a crucial role in determining
the manner in which the net magnetic flux changes in every solar cycle,
affecting the large scale evolution of the coronal magnetic fields and
heliospheric environment. We investigate, in this paper, the correlation
between the solar magnetic flux cancelled at the equator and the solar magnetic
flux transported to the poles by comparing the net amount of magnetic flux in
the latitude belt 0${^{\circ}}$-5${^{\circ}}$ and
45${^{\circ}}$-60${^{\circ}}$, estimated using synoptic magnetograms from
National Solar Observatory at Kitt Peak, during Solar Cycles 21-24. We find a
good correlation between the net flux in the latitude band
0${^{\circ}}$-5${^{\circ}}$ and 55${^{\circ}}$-60${^{\circ}}$ for the Northern
as well as for the Southern hemispheres. However, we find a poor correlation if
the net flux for the Northern and Southern hemispheres are considered together.
In addition, we investigate the correlation between the net flux cancelled at
the equator and the strength of solar polar field at cycle minimum, and find a
good correlation between the two. We discuss the implication of the correlation
of flux transported across the equator and to the poles that has an important
bearing in the estimation of the residual polar cap field strength at the cycle
minimum. This can be used a predictive tool for estimating the amplitude of
subsequent cycles and we use this to estimate maximum smoothed sunspot numbers
of 77$\pm$5 and 85$\pm$5 for the Northern and Southern hemispheres,
respectively, for the upcoming Solar Cycle 25.

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The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org