Addressing multi-counting issue in Kelp et al. 2025 calculation of encounter rates

Code to address an issue in the calculation of the proportion of area treated with prescribed fire that is subsequently encountered by wildfire in: Kelp, M., Burke, M., Qiu, M., Higuera-Mendieta, I., Liu, T., & Diffenbaugh, N. S. (2025). Effect of Recent Prescribed Burning and Land Management on Wildfire Burn Severity and Smoke Emissions in the Western United States. AGU Advances, 6(3), e2025AV001682. https://doi.org/10.1029/2025AV001682 Kelp et al. code: https://zenodo.org/records/18356055 In their code, Kelp et al. (2025) classify an entire prescribed fire treatment as "encoutnered" whenever any FINN emissions point falls within a buffer around a prescribed fire point. This approach results in extensive multi-counting of the same burned area. As a result, more area is calculated as encountered than actually has been treated. Correcting this error reverses a main conclusion of the paper: prescribed fire does not reduce net emissions.