Neves Alana K alana.kasahara@gmail.com 0000-0002-0301-944X Campagnolo Manuel L mlc@isa.ulisboa.pt Silva João M N joaomsilva1@edu.ulisboa.pt Pereira José M C jmcpereira@isa.ulisboa.pt 2023 A Landsat-based atlas of monthly burned area for Portugal, 1984 - 2021 dataset https://doi.org/10.1594/PANGAEA.955012 2023-01-30T10:26:08 The objectives of this work were to disaggregate the Portuguese Annual Fire Atlas burned area patches into individual events according to their date of occurrence estimated from Landsat temporal series, and to assign them the closest date (day and month) of the detected change. The resulting Monthly Fire Atlas is available from 1984 to 2021 for the entire mainland Portugal. We selected the closest fire date based on the index of the lowest ΔNBR in the time series. The maps were validated using MODIS and VIIRS active fires. Accuracies of individual years fluctuated according to the satellite and cloudiness of each year. For the entire 37 analyzed years, when considering 16 and 32 days of time gap, the Monthly Fire Atlas achieved 84% and 91% of accuracy, respectively. In the raster files, pixel value represents the meanDOY variable, which takes values from 1 (January 1) to 365 or 366. Missing values (NA) indicate that the pixel is not burned. Neves Alana K alana.kasahara@gmail.com 0000-0002-0301-944X Campagnolo Manuel L mlc@isa.ulisboa.pt Silva João M N joaomsilva1@edu.ulisboa.pt Pereira José M C jmcpereira@isa.ulisboa.pt 2023 A Landsat-based atlas of monthly burned area for Portugal, 1984–2021 journal article International Journal of Applied Earth Observation and Geoinformation 119 https://doi.org/10.1016/j.jag.2023.103321 103321 -8.0 -8.0 40.0 40.0 -8.0 40.0 not specified Instituto Superior de Agronomia https://doi.org/10.13039/501100006201 UIDB/00239/2020 Forest Research Centre https://www.isa.ulisboa.pt/cef/ Universidade de Lisboa https://doi.org/10.13039/501100005765 PCIF/GRF/0204/2017 FireCast - Forecasting fire probability and characteristics for a habitable pyroenvironment Portugal 40.0 -8.0 Portugal 136.4 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ The dataset is composed of three raster files for each year from 1984 to 2021 (37 years). DOY raster files: pixel values represent the real burned area image Day-Of-Year. DOYbefore raster files: pixel values represent the Day-Of-Year of previous image. MeanDOY raster files: pixel values represent the meanDOY variable, calculated based on DOY and DOYbefore raster files. CurationLevelB Basic curation https://wiki.pangaea.de/wiki/Curation_levels citable Fire mapping Landsat image time series Portugal remote sensing author97750 author97751 author97752 author97753 award1992 award1993 curlevel20 event3036399 funder21087 funder21096 geocode1600 geocode1601 journal7220 license21 ref117086 term23888 term47193 term47299 term71992 term71993 topotype1