FWI observation date: 2023-11-11
Original file: fwi20231111.tif
Original raster SHA256: d7da5ebc5cd424a2e4964f25d309d648d2ed9fc72c4ad6d45aab81c1c97e6b83
Boundary: Statistics Canada 2021 provincial boundary; PRENAME = British Columbia
Preparation: transform boundary to source raster CRS, crop, then mask. No raster resampling or value transformation.
Cropped source file: fwi_20231111_bc.tif
Cropped source SHA256: 93133c0b13011919dcf154615ca0e91ba4c2aef4fd9876f70bd0e51eb4c21516
Grid: 895 rows x 510 columns; 2000 m resolution; EPSG:3978.
The grid matches the package August 16 and August 18 inputs.
Packaging: terra::wrap(proxy = FALSE), R save version 2 with xz compression.
Revised manuscript analysis: SSIMmap 0.4.0 computational functions, transform="none", k1=0.01, k2=0.03, w=1/2/3, 1000 upper-tail permutations.
This November 11 observation was added in SSIMmap 0.4.1. It does not overwrite or relabel fwi_1101_bc, which remains November 1.

Official provider and attribution
Natural Resources Canada, Canadian Forest Service, Canadian Wildland Fire
Information System (CWFIS).
Canadian Forest Service. 2022. Canadian Wildland Fire Information System (CWFIS),
Natural Resources Canada, Canadian Forest Service, Northern Forestry Centre,
Edmonton, Alberta. https://cwfis.cfs.nrcan.gc.ca/
Contains information licensed under the Open Government Licence - Canada:
https://open.canada.ca/en/open-government-licence-canada
The license applies to the supplied FWI data; the package's own code uses MIT.

Official source metadata and license
https://cwfis.cfs.nrcan.gc.ca/downloads/cffdrs/fwi_grids_metadata_NAP_ISO_19115_2003.xml
https://cwfis.cfs.nrcan.gc.ca/downloads/licence.txt

Independent official-source verification
Retrieved 2026-10-27T20:05:41Z from the CWFIS Web Coverage Service:
https://cwfis.cfs.nrcan.gc.ca/geoserver/public/wcs?service=WCS&version=1.0.0&request=GetCoverage&coverage=public%3Afwi&BBOX=-2378164.081065%2C-707617.7711239969%2C3039835.918935%2C3854382.228876003&WIDTH=2709&HEIGHT=2281&CRS=EPSG%3A3978&FORMAT=GeoTIFF&TIME=2023-11-11T00%3A00%3A00Z
Retrieved TIFF SHA256: 29a67ae593356ebca47d78b3a0c0a72650d3e90ea9ce94b8b584b7adeaf5eb51
The TIFF container differs from the historical file, but all 6,179,229 grid cells
(550,870 nonmissing), missing-value positions, geometry and values agree exactly.
The same BC crop/mask gives 456,450 cells (182,396 nonmissing), all identical to
the analysis TIFF and the packaged fwi_1111_bc data. Maximum value difference: 0.
The historical author's original retrieval date is not recorded. The date above
is the independent verification retrieval date, not an inferred original date.
