CMIP6 spring onset data for Li et al. (2023): "Diverging Northern Hemisphere Trends in Meteorological Versus Ecological Indicators of Spring Onset in CMIP6"

This dataset contains the day of year (DOY) data of the extended spring indices (SI-x leaf) and LAI 25% threshold (LAI25%) used in the analysis presented in Li et al. "Diverging Northern Hemisphere Trends in Meteorological Versus Ecological Indicators of Spring Onset in CMIP6" (previously titled "Growing uncertainty in projected spring onset variability in the Northern Hemisphere"). The paper has been accepted by Geophysical Research Letters (doi:  10.1029/2023GL102833). The CMIP6 model outputs (maximum and minimum daily temperature, tasmax and tasmin, and leaf area index, lai) used to calculate these spring onset indicators are publicly available through the Earth System Grid Federation (ESGF): https://esgf-node.llnl.gov/projects/cmip6/.