FATES projections of forest structure and composition (1830-2098) at a mixed conifer site in the southern Sierra Nevada

This data repository contains model source code, parameter sets, driver data, and model output for simulations run with the Functionally Assembled Terrestrial Ecosystem Simulator (FATES) in a mixed conifer forest ~35 miles northeast of Fresno (37.0717, 119.2265) in California’s southern Sierra Nevada. The code and data provided here were used to 1) hindcast historical fire regimes, forest structure and function, including responses to logging and fire suppression and 2), project future changes in fire regimes and vegetation structure, including conifer and oak basal area and shrub cover, under future climate (2015-2098) and forest management scenarios. Model output for five validated parameterizations are provided. The code and data were designed to answer the following research questions: 1) how will projected future climate (2015-2098) affect forest structure, composition, and persistence of a representative mixed conifer forest in the Sierra Nevada; 2) how does management in the form..., FATES was run with 5 different validated parameter files (M1-M5) available in “validated_parameterizations_070224.zip”. All simulations were forced with hourly meteorology from the midpoint of the elevation range of yellow pine and mixed conifer (YPMC) forests in the southern Sierra Nevada (1730 m; Safford & Stevens, 2017) at a point approximately 35 miles northeast of Fresno (37.0717, -119.2265). Pre-1870 simulations were initialized from bare ground and forced with pre-industrial CO2 (280 ppm) and dynamically downscaled (Rahimi et al., 2022) ERA5 reanalysis meteorology (Hersbach et al., 2020) for 700 simulation years. Pre-industrial meteorology was represented by recycling 1951-1980 meteorology because this time period had the same mean temperature in the southern Sierra Nevada as the pre-industrial period. The meteorological driver data are available in “met_driver_wrf_1950_2020.tar.gz”.
To recreate present-day forest conditions we used our pre-industrial simulations to represent..., , # FATES projections of forest structure and composition (1830-2098) at a mixed conifer site in the southern Sierra Nevada

[https://doi.org/10.5061/dryad.pnvx0k6z1](https://doi.org/10.5061/dryad.pnvx0k6z1)

## Description of the data and file structure

The code and data provided here were used to hindcast historical fire regimes, forest structure and function in a mixed conifer forest in California's Sierra Nevada mountains. This included hindcasting responses to logging and fire suppression. These data were also used to project future changes in fire regimes and vegetation structure, including conifer and oak basal area and shrub cover, under future climate (2015-2098) and forest management scenarios.

### Files

#### **File: `met_driver_wrf_1950_2020.tar.gz`**

This file contains the **hourly meteorological forcing data** used for both the pre-industrial and 20th-century (1870–2015) FATES simulations. Key features include:

* Dynamically downscaled WRF meteorology (Rahimi et al., 202...,