Exploring discrepancies between in situ phenology and remotely derived phenometrics at NEON sites

In recent decades, the use of satellite sensors, near‐surface cameras, and other remote methods for monitoring vegetation phenology at landscape and higher scales has become increasingly common. These technologies provide a means to determine the timing of phenophases and growing season length at di...

Full description

Saved in:
Bibliographic Details
Published in:Ecosphere (Washington, D.C) D.C), 2022-01, Vol.13 (1), p.n/a
Main Authors: Donnelly, Alison, Yu, Rong, Jones, Katherine, Belitz, Michael, Li, Bonan, Duffy, Katharyn, Zhang, Xiaoyang, Wang, Jianmin, Seyednasrollah, Bijan, Gerst, Katherine L., Li, Daijiang, Kaddoura, Youssef, Zhu, Kai, Morisette, Jeffrey, Ramey, Colette, Smith, Kathleen
Format: Article
Language:English
Subjects:
Agreements
Autumn
Cameras
Carbon
Cloning
Ecosystems
Growing season
in situ phenology
Infrared imaging
Leaves
moderate resolution imaging spectroradiometer
NEON
Phenesse estimates
PhenoCam
Phenology
Radiation
Radiometers
Remote sensing
Satellites
Seasons
Senescence
Sensors
Special Feature: Harnessing the NEON Data Revolution
Spring
Terrestrial environments
Time series
Unmanned aerial vehicles
Vegetation
visible infrared imaging radiometer suite
Wilderness
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In recent decades, the use of satellite sensors, near‐surface cameras, and other remote methods for monitoring vegetation phenology at landscape and higher scales has become increasingly common. These technologies provide a means to determine the timing of phenophases and growing season length at different spatial resolutions; coverage that is not attainable by human observers. However, in situ ground observations are required to validate remotely derived phenometrics. Despite increased knowledge and expertise there still remains the persistent challenge of reconciling ground observations at the individual plant level with remotely sensed (RS) phenometrics at landscape or larger scales. We compared the timing of in situ phenophase estimates (spring and autumn) with a range of corresponding remote sensing (moderate resolution imaging spectroradiometer [MODIS], visible infrared imaging radiometer suite [VIIRS], PhenoCam) phenometrics across five terrestrial sites in the United States' NEON (Harvard Forest [MA] [HARV], Onaqui [UT] [ONAQ], Abby Road [WA] [ABBY], Disney Wilderness Preserve [FL] [DSNY], and Ordway‐Swisher Biological Station [FL] [OSBS]) focusing on the 3‐year period from 2017 to 2019. Our main objective was to explore potential reasons for the observed discrepancies between in situ and RS phenometrics and to determine which technologies were better able to capture ground observations. Statistically significant relationships were strongest (p 
ISSN:2150-8925
2150-8925
DOI:10.1002/ecs2.3912