Plants and phytoplankton exchange assimilated carbon in form of volatile organic compounds with the atmosphere. VOCs protect them against stresses, mediate plant interactions with other organisms, and contribute to ozone and secondary organic aerosol formation. Models to simulate VOC emissions are parameterized based on climatic data and emission factors obtained from measurements carried out at leaf, ecosystem, aircraft scale and satellite observations. Climate change may lead to alterations in VOC emission patterns currently underplayed. We encourage submission of contributions based on in-situ measurements, satellite observations and modeling.