  Space-based observations show that the solar atmosphere from the solar
chromosphere to the solar corona is filled with small-scale jets and is linked
with small-scale explosions. These jets may be produced by mechanisms similar
to that of large-scale flares and such jets may be related to the heating of
corona and chromosphere as well as the acceleration of solar wind. The
chromospheric anemone jets on the Sun remain puzzling because their footpoints
(or bright knots) have not been well resolved and the formation process of such
enigmatic small-scale jets remains unclear. We propose a new model for
chromospheric jets using the three-dimensional magnetohydrodynamic (MHD)
simulations, which show that the continuous, upward rising of small-scale
twisted magnetic flux ropes in a magnetized solar chromosphere drive
small-scale magnetic reconnection and the launching of several small-scale jets
during the evolution of the chromospheric anemone jets. Our new,
self-consistent, three-dimensional computer modeling of small-scale, but
ever-changing flux rope emergence in the magnetized solar atmosphere is fully
consistent with observations and provides a universal mechanism for nanoflare
and jet formation.
