Observational data from Alaska Mesowest for the comparison to seasonal forecasts for the 1994-2019 Alaska fire seasons

Observational data for each selected PSA was downloaded from Alaska Mesowest Fires and Fuels database (akff.mesowest.org) and curated into text files. These data come from long term meteorological observing stations, and only consistently reported data file were pulled for this project. Those stations selected are listed in the StationsUsedinPSAObsCalcs spreadsheet and text file. Variables include temperature, 24-hour accumulated precipitation, wind speeds, humidity, and buildup index (BUI) at 1400 ADKT. Observed temperature and precipitation data were used to help adjust ECMF and CFSv2 model temperature and precipitation values. Observed BUI was compared to forecast BUI via the calculation of various forecast skill scores.

本次筛选的各PSA观测数据均从阿拉斯加中尺度火灾与燃料数据库（Alaska Mesowest Fires and Fuels Database, akff.mesowest.org）下载，并规范化整理为文本文件。该数据集源自长期气象观测站，本项目仅提取了数据上报持续稳定的观测数据集。本次筛选的观测站信息已列于StationsUsedinPSAObsCalcs电子表格及文本文件中。观测变量包含气温、24小时累积降水量、风速、相对湿度，以及阿拉斯加夏令时14:00时的累积干旱指数（Buildup Index, BUI）。实测气温与降水数据被用于校正欧洲中期天气预报中心（ECMF）及气候预报系统第二版（CFSv2）的模式气温与降水输出值。通过计算各类预报技巧评分，将实测BUI与预报BUI进行对比分析。