ICARTT is a multi-faceted collaboration with participation by a myriad of institutions in North America and Europe. Effecting useful collaboration in such a complex enterprise represents a major challenge. This ICARTT Field Operations web site is designed to facilitate planning by individual groups and collaboration among groups. This site is a portal into the vast resources of ICARTT. It is intended for study participants with links to resources for deployment planning like meteorological and chemical forecasts, as well as flight plans and ship tracks. Links are also provided to key ICARTT data sources for analysis and interpretation.