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Title: Intercomparison of phenological transition dates derived from the PhenoCam Dataset V1.0 and MODIS satellite remote sensing

Journal Article · · Scientific Reports
 [1];  [2];  [3];  [3]
  1. Northern Arizona Univ., Flagstaff, AZ (United States). School of Informatics, Computing and Cyber Systems. Center for Ecosystem Science and Society
  2. National Inst. of Agricultural Research (INRA), Villenave d’Ornon (France)
  3. Univ. of New Hampshire, Durham, NH (United States). Earth Systems Research Center

Phenology is a valuable diagnostic of ecosystem health, and has applications to environmental monitoring and management. Here, we conduct an intercomparison analysis using phenological transition dates derived from near-surface PhenoCam imagery and MODIS satellite remote sensing. We used approximately 600 site-years of data, from 128 camera sites covering a wide range of vegetation types and climate zones. During both “greenness rising” and “greenness falling” transition phases, we found generally good agreement between PhenoCam and MODIS transition dates for agricultural, deciduous forest, and grassland sites, provided that the vegetation in the camera field of view was representative of the broader landscape. The correlation between PhenoCam and MODIS transition dates was poor for evergreen forest sites. We discuss potential reasons (including sub-pixel spatial heterogeneity, flexibility of the transition date extraction method, vegetation index sensitivity in evergreen systems, and PhenoCam geolocation uncertainty) for varying agreement between time series of vegetation indices derived from PhenoCam and MODIS imagery. This analysis increases our confidence in the ability of satellite remote sensing to accurately characterize seasonal dynamics in a range of ecosystems, and provides a basis for interpreting those dynamics in the context of tangible phenological changes occurring on the ground.

Research Organization:
Northern Arizona Univ., Flagstaff, AZ (United States); Univ. of New Hampshire, Durham, NH (United States); National Inst. of Agricultural Research (INRA), Villenave d’Ornon (France)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); United States Geological Survey (USGS); National Research Agency (ANR) (France)
Grant/Contract Number:
SC0016011; EF-1065029; EF-1702697; G10AP00129; G16AC00224; ANR-10-LABX-45
OSTI ID:
1499990
Journal Information:
Scientific Reports, Vol. 8; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 86 works
Citation information provided by
Web of Science

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Cited By (11)

Testing Hopkins’ Bioclimatic Law with PhenoCam data journal March 2019
Comparison of large‐scale citizen science data and long‐term study data for phenology modeling journal December 2018
Tracking vegetation phenology across diverse biomes using Version 2.0 of the PhenoCam Dataset journal October 2019
Comparison of Grassland Phenology Derived from MODIS Satellite and PhenoCam Near-Surface Remote Sensing in North America journal September 2019
Rethinking false spring risk journal May 2019
Tracking seasonal rhythms of plants in diverse ecosystems with digital camera imagery journal December 2018
Limitations and Challenges of MODIS-Derived Phenological Metrics Across Different Landscapes in Pan-Arctic Regions journal November 2018
Exploiting Time Series of Sentinel-1 and Sentinel-2 Imagery to Detect Meadow Phenology in Mountain Regions journal March 2019
Comparison Of Large-Scale Citizen Science Data And Long-Term Study Data For Phenology Modeling text January 2018
Deep Learning in Plant Phenological Research: A Systematic Literature Review journal March 2022
Uncovering the Topology of Time-Varying fMRI Data using Cubical Persistence text January 2021

Figures / Tables (6)