The data produced at LTER sites are an extraordinary scientific resource that can inform a wide variety of questions. Among-site comparisons interrogate the generality of effects observed at particular sites. Modeling efforts employ long term observations and experiments to formulate and test rigorous descriptions of theory. Scaling exercises get at the continental or even global impacts of documented effects. LTER synthesis working groups organized through the LTER Network Office (LNO) are intended to support collaboration on these and many other types of questions. In the 2022 competition, the LNO expects to award 2-4 synthesis working groups at a funding level of up to $110,000 for up to two years. Required proposal elements and instructions are below. More information here: https://lternet.edu/synthesis/rfp-2022/