This is the thirteenth in the series of
Solar-Terrestrial Physics Symposia organized by the Scientific Committee
on Solar-Terrestrial Physics （SCOSTEP） and held approximately every
four years. SCOSTEP is engaged in three activities： long-term scientific
programs, capacity building, and public outreach. The scientific
programs are designed to advance our understanding of the solar
terrestrial relationship using space- and ground-based data,
cutting-edge models, and theory. SCOSTEP programs are thus of
interdisciplinary nature and involve scientists from all over the world.
In 2013, the Climate and Weather in the Sun-Earth System （CAWSES）
program ended, and the new program known as the Variability of the Sun
and Its terrestrial Impact （VarSITI） started. The underlying theme of
SCOSTEP scientific programs is the way Sun affects Earth over various
time scales. The VarSITI program expands the solar terrestrial physics
to a broader context to star-planet interaction, which might further our
scientific understanding of Sun-Earth connection. This Symposium, known
as STP13 for short, will highlight results obtained during the CAWSES
program and the new results from the VarSITI program.
The symposium will be held on October 12-17, 2014 in Xi'An, Shanxi, China.