  We use daily full-disk vector magnetograms from Vector Spectromagnetograph
(VSM) on Synoptic Optical Long-term Investigations of the Sun (SOLIS) system to
synthesize the first Carrington maps of the photospheric vector magnetic field.
We describe these maps and make a comparison of observed radial field with the
radial field estimate from LOS magnetograms. Further, we employ these maps to
study the hemispheric pattern of current helicity density, Hc, during the
rising phase of the solar cycle 24. Longitudinal average over the 23
consecutive solar rotations shows a clear signature of the hemispheric helicity
rule, i.e. Hc is predominantly negative in the North and positive in South.
Although our data include the early phase of cycle 24, there appears no
evidence for a possible (systematic) reversal of the hemispheric helicity rule
at the beginning of cycle as predicted by some dynamo models. Further, we
compute the hemispheric pattern in active region latitudes (-30 deg \le \theta
\le 30 deg) separately for weak (100< |B_r| <500 G)and strong (|B_r|>1000 G)
radial magnetic fields. We find that while the current helicity of strong
fields follows the well-known hemispheric rule (i.e., \theta . Hc < 0), H_c of
weak fields exhibits an inverse hemispheric behavior (i.e., \theta . Hc > 0)
albeit with large statistical scatter. We discuss two plausible scenarios to
explain the opposite hemispheric trend of helicity in weak and strong field
region.
