The Canadian long term satellite data record (LTDR) derived from 1-km resolution Advanced Very High Resolution Radiometer (AVHRR) data was produced by the Canada Center for Remote Sensing (CCRS). Processing included: geolocation, calibration, and compositing using Earth Observation Data Manager (Latifovic et al. 2005), cloud screening (Khlopenkov and Trishchenko, 2006), BRDF correction (Latifovic et. al., 2003), atmosphere and other corrections as described in Cihlar et. al. (2004). For temporal analysis of vegetation cross-sensor correction of Latifovic et al. (2012) is advised. Data collected by the AVHRR instrument on board the National Oceanic and Atmospheric Administration (NOAA) 9,11,14,16,17,18 and 19 satellites were used to generate Canada-wide 1-km 10-day AVHRR composites. Data are available starting in 1985. It is important to note that there are three types of AVHRR sensors: (i) AVHRR-1 flown onboard TIROS-N, NOAA-6, NOAA-8, and NOAA-10; (ii) AVHRR-2 flown onboard NOAA-7, NOAA-9, NOAA-11, NOAA-12, and NOAA-14; and (iii) AVHRR-3 currently operational onboard NOAA-15, NOAA-16, NOAA-17, NOAA-18 and NOAA-19. The AVHRR-1 has four channels, AVHRR-2 has five channels and the AVHRR-3 has six channels, although only five channels of AVHRR-3 can be operational at any one time. As such, channels 3A (1.6 m) and 3B (3.7 m) work interchangeably. The processing procedure was designed to minimize artefacts in AVHRR composite images. There are thirty six 10-day image composites per year. The following three processing levels are provided: P1) top of atmosphere reflectance and brightness temperature, P2) reflectance at surface and surface temperature and P3) reflectance at surface normalized to a common viewing geometry (BRDF normalization). The processing level P1 and P2 are provided for all 36 composites while level P3 is provided for 21 composites from April – October.

The AVHRR monthly composite time series of Canada at 1 km resolution is a long-term satellite record produced by the Canada Centre for Remote Sensing (CCRS) from imagery acquired by the Advanced Very High Resolution Radiometer (AVHRR) sensors aboard the NOAA-9, NOAA-11, NOAA-14, NOAA-16, NOAA-17, NOAA-18, and NOAA-19 satellites. The dataset provides monthly composite imagery covering the period from January 1985 to December 2013 (1985-01-21 to 2013-12-21), offering a consistent multi-decadal record for monitoring Canada's terrestrial environment. The monthly products are derived from the original 10-day AVHRR composite time series to provide a uniform temporal record suitable for long-term environmental monitoring. Each monthly image is provided as a three-band, 8-bit RGB Cloud Optimized GeoTIFF (COG) with a spatial resolution of 1 km (R: NDVI; G: NIR (0.725–1.10 µm); B: Visible red (0.58–0.68 µm)). This false-colour composite enhances the visualization of vegetation condition, water bodies, snow and ice, and other land surface features. The imagery has undergone geolocation, radiometric calibration, cloud screening, atmospheric correction, and bidirectional reflectance distribution function (BRDF) normalization to produce a spatially and temporally consistent dataset suitable for land cover mapping, vegetation monitoring, environmental assessment, and climate change studies. **This third party metadata element follows the Spatio Temporal Asset Catalog (STAC) specification.**

The AVHRR monthly composite time series of Canada at 1 km resolution is a long-term satellite record produced by the Canada Centre for Remote Sensing (CCRS) from imagery acquired by the Advanced Very High Resolution Radiometer (AVHRR) sensors aboard the NOAA-9, NOAA-11, NOAA-14, NOAA-16, NOAA-17, NOAA-18, and NOAA-19 satellites. The dataset provides monthly composite imagery covering the period from January 1985 to December 2013 (1985-01-21 to 2013-12-21), offering a consistent multi-decadal record for monitoring Canada's terrestrial environment. The monthly products are derived from the original 10-day AVHRR composite time series to provide a uniform temporal record suitable for long-term environmental monitoring. Each monthly image is provided as a three-band, 8-bit RGB Cloud Optimized GeoTIFF (COG) with a spatial resolution of 1 km (R: NDVI; G: NIR (0.725–1.10 µm); B: Visible red (0.58–0.68 µm)). This false-colour composite enhances the visualization of vegetation condition, water bodies, snow and ice, and other land surface features. The imagery has undergone geolocation, radiometric calibration, cloud screening, atmospheric correction, and bidirectional reflectance distribution function (BRDF) normalization to produce a spatially and temporally consistent dataset suitable for land cover mapping, vegetation monitoring, environmental assessment, and climate change studies. **This third party metadata element follows the Spatio Temporal Asset Catalog (STAC) specification.**

The AVHRR monthly composite time series of Canada at 1 km resolution is a long-term satellite record produced by the Canada Centre for Remote Sensing (CCRS) from imagery acquired by the Advanced Very High Resolution Radiometer (AVHRR) sensors aboard the NOAA-9, NOAA-11, NOAA-14, NOAA-16, NOAA-17, NOAA-18, and NOAA-19 satellites. The dataset provides monthly composite imagery covering the period from January 1985 to December 2013 (1985-01-21 to 2013-12-21), offering a consistent multi-decadal record for monitoring Canada's terrestrial environment. The monthly products are derived from the original 10-day AVHRR composite time series to provide a uniform temporal record suitable for long-term environmental monitoring. Each monthly image is provided as a three-band, 8-bit RGB Cloud Optimized GeoTIFF (COG) with a spatial resolution of 1 km (R: NDVI; G: NIR (0.725–1.10 µm); B: Visible red (0.58–0.68 µm)). This false-colour composite enhances the visualization of vegetation condition, water bodies, snow and ice, and other land surface features. The imagery has undergone geolocation, radiometric calibration, cloud screening, atmospheric correction, and bidirectional reflectance distribution function (BRDF) normalization to produce a spatially and temporally consistent dataset suitable for land cover mapping, vegetation monitoring, environmental assessment, and climate change studies. **This third party metadata element follows the Spatio Temporal Asset Catalog (STAC) specification.**

The AVHRR monthly composite time series of Canada at 1 km resolution is a long-term satellite record produced by the Canada Centre for Remote Sensing (CCRS) from imagery acquired by the Advanced Very High Resolution Radiometer (AVHRR) sensors aboard the NOAA-9, NOAA-11, NOAA-14, NOAA-16, NOAA-17, NOAA-18, and NOAA-19 satellites. The dataset provides monthly composite imagery covering the period from January 1985 to December 2013 (1985-01-21 to 2013-12-21), offering a consistent multi-decadal record for monitoring Canada's terrestrial environment. The monthly products are derived from the original 10-day AVHRR composite time series to provide a uniform temporal record suitable for long-term environmental monitoring. Each monthly image is provided as a three-band, 8-bit RGB Cloud Optimized GeoTIFF (COG) with a spatial resolution of 1 km (R: NDVI; G: NIR (0.725–1.10 µm); B: Visible red (0.58–0.68 µm)). This false-colour composite enhances the visualization of vegetation condition, water bodies, snow and ice, and other land surface features. The imagery has undergone geolocation, radiometric calibration, cloud screening, atmospheric correction, and bidirectional reflectance distribution function (BRDF) normalization to produce a spatially and temporally consistent dataset suitable for land cover mapping, vegetation monitoring, environmental assessment, and climate change studies. **This third party metadata element follows the Spatio Temporal Asset Catalog (STAC) specification.**

The AVHRR monthly composite time series of Canada at 1 km resolution is a long-term satellite record produced by the Canada Centre for Remote Sensing (CCRS) from imagery acquired by the Advanced Very High Resolution Radiometer (AVHRR) sensors aboard the NOAA-9, NOAA-11, NOAA-14, NOAA-16, NOAA-17, NOAA-18, and NOAA-19 satellites. The dataset provides monthly composite imagery covering the period from January 1985 to December 2013 (1985-01-21 to 2013-12-21), offering a consistent multi-decadal record for monitoring Canada's terrestrial environment. The monthly products are derived from the original 10-day AVHRR composite time series to provide a uniform temporal record suitable for long-term environmental monitoring. Each monthly image is provided as a three-band, 8-bit RGB Cloud Optimized GeoTIFF (COG) with a spatial resolution of 1 km (R: NDVI; G: NIR (0.725–1.10 µm); B: Visible red (0.58–0.68 µm)). This false-colour composite enhances the visualization of vegetation condition, water bodies, snow and ice, and other land surface features. The imagery has undergone geolocation, radiometric calibration, cloud screening, atmospheric correction, and bidirectional reflectance distribution function (BRDF) normalization to produce a spatially and temporally consistent dataset suitable for land cover mapping, vegetation monitoring, environmental assessment, and climate change studies. **This third party metadata element follows the Spatio Temporal Asset Catalog (STAC) specification.**

The AVHRR monthly composite time series of Canada at 1 km resolution is a long-term satellite record produced by the Canada Centre for Remote Sensing (CCRS) from imagery acquired by the Advanced Very High Resolution Radiometer (AVHRR) sensors aboard the NOAA-9, NOAA-11, NOAA-14, NOAA-16, NOAA-17, NOAA-18, and NOAA-19 satellites. The dataset provides monthly composite imagery covering the period from January 1985 to December 2013 (1985-01-21 to 2013-12-21), offering a consistent multi-decadal record for monitoring Canada's terrestrial environment. The monthly products are derived from the original 10-day AVHRR composite time series to provide a uniform temporal record suitable for long-term environmental monitoring. Each monthly image is provided as a three-band, 8-bit RGB Cloud Optimized GeoTIFF (COG) with a spatial resolution of 1 km (R: NDVI; G: NIR (0.725–1.10 µm); B: Visible red (0.58–0.68 µm)). This false-colour composite enhances the visualization of vegetation condition, water bodies, snow and ice, and other land surface features. The imagery has undergone geolocation, radiometric calibration, cloud screening, atmospheric correction, and bidirectional reflectance distribution function (BRDF) normalization to produce a spatially and temporally consistent dataset suitable for land cover mapping, vegetation monitoring, environmental assessment, and climate change studies. **This third party metadata element follows the Spatio Temporal Asset Catalog (STAC) specification.**

The AVHRR monthly composite time series of Canada at 1 km resolution is a long-term satellite record produced by the Canada Centre for Remote Sensing (CCRS) from imagery acquired by the Advanced Very High Resolution Radiometer (AVHRR) sensors aboard the NOAA-9, NOAA-11, NOAA-14, NOAA-16, NOAA-17, NOAA-18, and NOAA-19 satellites. The dataset provides monthly composite imagery covering the period from January 1985 to December 2013 (1985-01-21 to 2013-12-21), offering a consistent multi-decadal record for monitoring Canada's terrestrial environment. The monthly products are derived from the original 10-day AVHRR composite time series to provide a uniform temporal record suitable for long-term environmental monitoring. Each monthly image is provided as a three-band, 8-bit RGB Cloud Optimized GeoTIFF (COG) with a spatial resolution of 1 km (R: NDVI; G: NIR (0.725–1.10 µm); B: Visible red (0.58–0.68 µm)). This false-colour composite enhances the visualization of vegetation condition, water bodies, snow and ice, and other land surface features. The imagery has undergone geolocation, radiometric calibration, cloud screening, atmospheric correction, and bidirectional reflectance distribution function (BRDF) normalization to produce a spatially and temporally consistent dataset suitable for land cover mapping, vegetation monitoring, environmental assessment, and climate change studies. **This third party metadata element follows the Spatio Temporal Asset Catalog (STAC) specification.**

The AVHRR monthly composite time series of Canada at 1 km resolution is a long-term satellite record produced by the Canada Centre for Remote Sensing (CCRS) from imagery acquired by the Advanced Very High Resolution Radiometer (AVHRR) sensors aboard the NOAA-9, NOAA-11, NOAA-14, NOAA-16, NOAA-17, NOAA-18, and NOAA-19 satellites. The dataset provides monthly composite imagery covering the period from January 1985 to December 2013 (1985-01-21 to 2013-12-21), offering a consistent multi-decadal record for monitoring Canada's terrestrial environment. The monthly products are derived from the original 10-day AVHRR composite time series to provide a uniform temporal record suitable for long-term environmental monitoring. Each monthly image is provided as a three-band, 8-bit RGB Cloud Optimized GeoTIFF (COG) with a spatial resolution of 1 km (R: NDVI; G: NIR (0.725–1.10 µm); B: Visible red (0.58–0.68 µm)). This false-colour composite enhances the visualization of vegetation condition, water bodies, snow and ice, and other land surface features. The imagery has undergone geolocation, radiometric calibration, cloud screening, atmospheric correction, and bidirectional reflectance distribution function (BRDF) normalization to produce a spatially and temporally consistent dataset suitable for land cover mapping, vegetation monitoring, environmental assessment, and climate change studies. **This third party metadata element follows the Spatio Temporal Asset Catalog (STAC) specification.**

The AVHRR monthly composite time series of Canada at 1 km resolution is a long-term satellite record produced by the Canada Centre for Remote Sensing (CCRS) from imagery acquired by the Advanced Very High Resolution Radiometer (AVHRR) sensors aboard the NOAA-9, NOAA-11, NOAA-14, NOAA-16, NOAA-17, NOAA-18, and NOAA-19 satellites. The dataset provides monthly composite imagery covering the period from January 1985 to December 2013 (1985-01-21 to 2013-12-21), offering a consistent multi-decadal record for monitoring Canada's terrestrial environment. The monthly products are derived from the original 10-day AVHRR composite time series to provide a uniform temporal record suitable for long-term environmental monitoring. Each monthly image is provided as a three-band, 8-bit RGB Cloud Optimized GeoTIFF (COG) with a spatial resolution of 1 km (R: NDVI; G: NIR (0.725–1.10 µm); B: Visible red (0.58–0.68 µm)). This false-colour composite enhances the visualization of vegetation condition, water bodies, snow and ice, and other land surface features. The imagery has undergone geolocation, radiometric calibration, cloud screening, atmospheric correction, and bidirectional reflectance distribution function (BRDF) normalization to produce a spatially and temporally consistent dataset suitable for land cover mapping, vegetation monitoring, environmental assessment, and climate change studies. **This third party metadata element follows the Spatio Temporal Asset Catalog (STAC) specification.**