Environmental processes and ecosystem phenomena have deservedly received considerable attention over the last decade by both
scientists and those involved in public-policy decisions. Many of the investigations in these areas are a result of potential climate
change and its far-reaching impacts. Nonetheless, a common thread in environmental investigations is the need for methodological
tools capable of describing and predicting these complex, and typically high-dimensional, processes. This themed issue on time
series in the environmental sciences focuses on novel approaches to modelling in this context.