PhenoFlight: Vegetation Phenology during NEON AOP Surveys

This application displays the annual peak greenness windows and vegetation phenology during airborne remote sensing collections at NEON sites. Annual vegetation phenology is determined from MODIS MOD13Q1.006 Terra and MYD13Q1.006 Aqua 16-Day 250m Global Enhanced Vegetation Indices (EVI) from 2003-2024, and Harmonized Landsat-Sentinel (HLS) 30m EVI derived from NASA's HLS v2.0 product combining Landsat 8/9 and Sentinel-2 observations from 2016-2025. Start of peak greenness (PG) for all vegetation types is defined as the date corresponding to 90% of the pre-peak amplitude from start-of-spring to the maximum EVI value of the long-term mean phenology curve. End of peak greenness is defined as the date corresponding to 90% of the post-peak amplitude threshold for grasslands, shrublands, agriculture and tundra, and the 80% post-peak amplitude threshold for deciduous broadleaf forest, mixed forest, and woody wetlands. Cloud cover is determined through visual estimation of the percent of cloud cover present during data acquisition along each flight line.
Phenocam image for site during airborne survey in year selected
AOP Earth Engine Data Viewer App
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