This workshop will bring together researchers interested in understanding how climate and life history patterns of zooplankton interact to produce the observed distributions and abundances of key species found throughout the boreal Sub-Arctic and Arctic seas. The Workshop will build on work funded through the GLOBEC Pan-Regional Synthesis project, which is exploring how species pairs of copepods in the genus Calanus co-exist in the Atlantic and Pacific basins. That work is a combination of modeling efforts and data analysis, and combines both abundance and distribution data with vital rate data on reproduction, feeding, and development. This workshop will facilitate expansion of that work beyond a single genus. We seek enhanced collaboration within the community to further the understanding of how zooplankton life histories are affected by climate change. Of special interest will be the influence of ice cover and the prediction of the effects of reduced ice cover under global warming. Participation of researchers studying climate affects on zooplankton prey and predators is also encouraged.