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It is of great importance to track the solar wind back to its photosphericsource region and identify the related current sheets; this will provide keyinformation for investigating the origin and predictions of the solar wind. Wereport a statistical study relating the photospheric footpoint motion andin-situ observation of current sheets in the solar wind. We used the potentialforce-free source--surface (PFSS) model and the daily synoptic charts to tracethe solar wind back from 1 AU, as observed by the Wind spacecraft, to the solarsurface. As the footpoints move along the solar surface we obtain a time seriesof the jump times between different points. These jumps can be within a celland between adjacent cells. We obtained the distribution of the jump times andthe distribution for a subset of the jump times in which only jumps betweenadjacent cells were counted. For both cases, the distributions clearly show twopopulations. These distributions are compared with the distribution of in-situcurrent sheets reported in an earlier work of Miao Peng and Li (2011). Itsimplications on the origin of the current sheets are discussed.

Tracking Back the Solar Wind to its Photospheric Footpoints from Wind Observations -- A Statistical Study