Wildfires (Baseline)

The MODIS Burned Area data product uses a multi-stage algorithm to classify individual 500-m grid cells as either burned or unburned over a single calendar month. For a single MODIS tile, the change-detection algorithm 1) produces composite imagery that summarizes persistent changes in the time series of a burn-sensitive vegetation index, 2) uses spatial and temporal active-fire information to guide the statistical characterization of burn-related and non-burn-related change, and 3) estimates a probabilistic threshold to identify grid cells containing burned areas. One month of daily observations before and after the mapping period are required to accommodate the moving windows employed in the change-detection process, so three consecutive months of observations are required to map one calendar month of burning. In addition to detecting the burned area extent, the data product also approximates the day of burning in each month for each 500-m grid cell based on active fire detections. Displays monthly burned area extent and date of burn based on differences in a burn-sensitive Vegetation Index derived from MODIS shortwave infrared surface reflectance bands

The Terra and Aqua combined MCD64A1 Version 6.1 Burned Area data product is a monthly, global gridded 500 meter (m) product containing per-pixel burned-area and quality information. The MCD64A1 burned-area mapping approach employs 500 m Moderate Resolution Imaging Spectroradiometer (MODIS) Surface Reflectance imagery coupled with 1 kilometer (km) MODIS active fire observations. The algorithm uses a burn sensitive Vegetation Index (VI) to create dynamic thresholds that are applied to the composite data. The VI is derived from MODIS shortwave infrared atmospherically corrected surface reflectance bands 5 and 7 with a measure of temporal texture. The algorithm identifies the date of burn for the 500 m grid cells within each individual MODIS tile. The date is encoded in a single data layer as the ordinal day of the calendar year on which the burn occurred with values assigned to unburned land pixels and additional special values reserved for missing data and water grid cells. The data layers provided in the MCD64A1 product include Burn Date, Burn Data Uncertainty, Quality Assurance, along with First Day and Last Day of reliable change detection of the year. Known Issues * For complete information about known issues please refer to the MODIS/VIIRS Land Quality Assessment website.

Ocean temperature: areas where the temperature of the sea at surface level is above 25ºC. Pixels with a value higher than the specified threshold (25ºC) were given a value of 1 (YES response) Historical climate data are an ensemble of outputs from CMIP6 earth system models for the time period 1981-2010. **Data publication:** 2022-01-26 **Contact points:** Resource Contact: [IPCC WGI Interactive Atlas](mailto:ipcc-ddc@ifca.unican.es) Metadata Contact: [OCB Environment](mailto:OCB-Environment-List@fao.org) **Resource constraints:** More information on IPCC data license at: https://interactive-atlas.ipcc.ch/license **Online resources:**

Drought: areas where the Standardized Precipitation Index is below 0%. Pixels with a value below than the specified threshold (0%) were given a value of 1 (YES response) Historical climate data are an ensemble of outputs from CMIP6 earth system models for the time period 1981-2010 **Data publication:** 2022-01-26 **Contact points:** Resource Contact: [IPCC WGI Interactive Atlas](mailto:ipcc-ddc@ifca.unican.es) Metadata Contact: [OCB Environment](mailto:OCB-Environment-List@fao.org) **Resource constraints:** More information on IPCC data license at: https://interactive-atlas.ipcc.ch/license **Online resources:**

Extreme high temperatures: areas where maximum temperatures are above 35ºC for at least 30 days on average per year. Pixels with a value higher than the specified threshold (35ºC) were given a value of 1 (YES response) Historical climate data are an ensemble of outputs from CMIP6 earth system models for the time period 1981-2010 **Data publication:** 2022-01-26 **Contact points:** Resource Contact: [IPCC WGI Interactive Atlas](mailto:ipcc-ddc@ifca.unican.es) Metadata Contact: [OCB Environment](mailto:OCB-Environment-List@fao.org) **Resource constraints:** More information on IPCC data license at: https://interactive-atlas.ipcc.ch/license **Online resources:** Download the data from Google Cloud Storage

Global burned area polygons derived from MODIS satellite imagery, providing information on spatial and temporal attributes of areas affected by fires. Fires are mapped using a semi-automatic procedure. Provided as GeoJSON. Note: the dates reported as Start date and Last update may not correspond to the date of ignition and extinction of the fire.