FIRED Grenada Nov 2000 - July 2024

This is event-level polygons for the fire event delineation (FIRED) product for GRENADA from November 2000 to July 2024. It is derived from the MODIS MCD64A1 burned area product (see https://lpdaac.usgs.gov/products/mcd64a1v061/ for more details). The MCD64A1 is a monthly raster grid of estimated burned dates. Firedpy (https://github.com/earthlab/firedpy) is an algorithm that converts these rasters into events by stacking the entire time series into a spatial-temporal data cube, then uses an algorithm to assign event identification numbers to pixels that fit into the same 3-dimensional spatial temporal window. This particular dataset was created using a spatial parameter of 1 pixels and 5 days. Daily polygons are included and the event identification numbers are the same for both files, but the event-level product has only single polygons for each entire event, while the daily product has separate polygons for each date per event. See the associated paper for more details on the methods and more:

Balch, J.K.; St. Denis, L.A.; Mahood, A.L.; Mietkiewicz, N.P.; Williams, T.M.; McGlinchy, J.; Cook, M.C. FIRED (Fire Events Delineation): An Open, Flexible Algorithm and Database of US Fire Events Derived from the MODIS Burned Area Product (2001–2019). Remote Sens. 2020, 12, 3498. https://doi.org/10.3390/rs12213498

本数据集为2000年11月至2024年7月期间格林纳达（GRENADA）火灾事件勾画（Fire Event Delineation，简称FIRED）产品的事件级多边形数据。该数据源自中分辨率成像光谱仪（MODIS）MCD64A1火烧面积产品，详细信息可参考：https://lpdaac.usgs.gov/products/mcd64a1v061/。MCD64A1是一款包含估算过火日期的月度栅格数据集。Firedpy（https://github.com/earthlab/firedpy）是一款专用算法，通过将完整时间序列堆叠为时空数据立方体，将上述栅格数据转换为火灾事件，并为落入同一三维时空窗口内的像元分配统一的事件识别编号。本数据集基于1像元的空间参数与5天的时间参数生成。数据集中涵盖逐日多边形数据，事件级产品与逐日产品的事件识别编号保持一致；但事件级产品仅为每个完整火灾事件提供单个多边形，而逐日产品则为单个事件内的每个观测日期生成独立的多边形。有关方法及更多细节，请参阅关联论文：Balch, J.K.、St. Denis, L.A.、Mahood, A.L.、Mietkiewicz, N.P.、Williams, T.M.、McGlinchy, J.、Cook, M.C. 于《Remote Sens.》2020年第12卷第3498页发表的论文《FIRED（火灾事件勾画）：一款基于MODIS火烧面积产品构建的开放式灵活算法及美国火灾事件数据库（2001–2019）》，DOI：10.3390/rs12213498。