  State-of-the-art solar instrumentation is revealing magnetic activity of the
Sun with unprecedented resolution. Observations with the 1.6m New Solar
Telescope of the Big Bear Solar Observatory are making next steps in our
understanding of the solar surface structure. Granular-scale magnetic flux
emergence and the response of the solar atmosphere are among the key research.
As part of a joint observing program with NASA's IRIS mission, the NST observed
active region NOAA 11810 in photospheric and chromospheric wavelengths.
Complimentary data are provided by SDO and Hinode space-based telescopes. The
region displayed a group of solar pores, in the vicinity of which we detect a
small-scale buoyant horizontal magnetic flux tube causing abnormal granulation
and interacting with the pre-existing ambient field in upper atmospheric
layers. Following the expansion of distorted granules at the emergence site, we
observed a sudden appearance of an extended surge in the HeI data. IRIS catched
ejection of a hot plasma jet associated with the HeI-surge. The SDO/HMI data
reveal emerging magnetic looplike structures. Hinode/Ca II H and IRIS
filtergrams detail the connectivities of the newly emerged magnetic field in
the lower solar chromosphere. From these data we fid that the orientation of
the emerging flux tube was almost perpendicular to the overlying ambient field.
Nevertheless the interaction of emerging magnetic field lines with the
pre-existing overlying field generates high-temperature emission regions and
boosts the surge/jet production. The localized heating is detected before and
after the first signs of the surge/jet ejection. We compare the results with
previous observations and theoretical models, and propose a scenario for the
activation of plasma jet/surges and confined heating. Such process may play a
significant role in the mass and energy flow from the interior to the corona.
