Code for Nitrogen speciation in atmospheric deposition shapes spring leaf-out and its response to warming

This repository contains the R code supporting the study “Nitrogen speciation in atmospheric deposition shapes spring leaf-out and its response to warming”. The code covers analyses of reduced (NHx) and oxidized (NOy) nitrogen deposition in relation to leaf-out timing and temperature sensitivity, including soil moderation, long-term contribution estimates, sensitivity analyses, and out-of-sample prediction.