USA National Phenology Network — Nature's Notebook & Pheno Forecasts

US national phenology monitoring program. Hybrid hosted by USGS Ecosystems Mission Area (funding + Director supervision) and University of Arizona (National Coordinating Office, Tucson; cooperative agreement G23AC00566). Founded 2007; flagship Nature's Notebook citizen-science protocol launched 2009. Operates standardized BBCH-style phenophase definitions across 1,000+ plant and animal species. Cumulative >45M observation records across ~23,000 active sites; observer pool ~45k. Also publishes daily Pheno Forecasts for 12 invasive insects + 1 invasive plant (GDD-driven, 6-day / 1-2-week horizons) and gridded Spring Indices (SI-x first-leaf and first-bloom) derived from PRISM + NDFD/RTMA/URMA. Operational consumer of NPN outputs include Drought.gov / NIDIS and USDA agricultural advisories. NPN ground onset is also the reference dataset for NASA VIIRS Land Surface Phenology CalVal (10.7 d mean absolute difference for deciduous; HP-LSP HLS+PhenoCam-fused dataset built specifically to bridge to NPN ground truth). Politically: USGS line is structurally exposed under DOGE FY26 proposed -$564M Ecosystems cut, but NSF $1.2M Dec 2024 grant cushions near-term; Director Crimmins published 2025 AGU *Perspectives* paper explicitly inviting commercialization partnership models.

Provider	USA-NPN National Coordinating Office (USGS Ecosystems Mission Area + University of Arizona, cooperative agreement G23AC00566)
Type	mixed
CNR score	45
Origin	https://www.usanpn.org/
Provider URL	https://www.usgs.gov/programs/status-and-trends-program/science/national-phenology-network-npn