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Remote Sensing Phenology

Phenology is the study of plant and animal life cycles in relation to the seasons. EROS maintains a set of nine annual phenological metrics for the conterminous United States, all curated from satellite data. Taken together, the metrics represent a powerful tool for documenting life cycle trends and the impacts of climate change on ecosystems.

Publications

Exploring VIIRS continuity with MODIS in an expedited capability for monitoring drought-related vegetation conditions Exploring VIIRS continuity with MODIS in an expedited capability for monitoring drought-related vegetation conditions

Vegetation has been effectively monitored using remote sensing time-series vegetation index (VI) data for several decades. Drought monitoring has been a common application with algorithms tuned to capturing anomalous temporal and spatial vegetation patterns. Drought stress models, such as the Vegetation Drought Response Index (VegDRI), often use VIs like the Normalized Difference...
Authors
Trenton Benedict, Jesslyn Brown, Stephen P. Boyte, Daniel Howard, Brian Fuchs, Brian Wardlow, Tsegaye Tadesse, Kirk Evenson

Exploring relationships of spring green-up to moisture and temperature across Wyoming, U.S.A Exploring relationships of spring green-up to moisture and temperature across Wyoming, U.S.A

Vegetation green-up signals the timing of available nutritious plants and shrubs providing high-quality forage for ungulates. In this study, we characterized spatial and temporal patterns of spring phenology and explored how they were related to preceding temperature and moisture conditions. We tested correlations between late winter weather and indicators of the onset and the length of...
Authors
Jesslyn Brown, Lei Ji, Alisa Gallant, Matthew Kauffman

Optimizing a remote sensing production efficiency model for macro-scale GPP and yield estimation in agroecosystems Optimizing a remote sensing production efficiency model for macro-scale GPP and yield estimation in agroecosystems

Earth observation data are increasingly used to provide consistent eco-physiological information over large areas through time. Production efficiency models (PEMs) estimate Gross Primary Production (GPP) as a function of the fraction of photosynthetically active radiation absorbed by the canopy, which is derived from Earth observation. GPP can be summed over the growing season and...
Authors
Michael Marshall, Kevin Tu, Jesslyn Brown
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