Printed from the TERN Data Discovery portalhttp://portal.tern.org.au/seasonal-persistent-green-australia-coverage/22025
154.5,-9.5 154.5,-44.5 112.5,-44.5 112.5,-9.5 154.5,-9.522025
An estimate of persistent green cover per season. This is intended to estimate the portion of vegetation that does not completely senesce within a year, which primarily consists of woody vegetation (trees and shrubs), although there are exceptions where non-woody cover remains green all year round. It is derived by fitting a multi-iteration minimum weighted smoothing spline through the green fraction of the seasonal fractional cover (dim) time series.
This dataset was produced by the Joint Remote Sensing Research Program using data sourced from US Geological Survey.
This product captures variability in persistent green cover at seasonal (ie three-monthly) time scales, forming a consistent time series from 1989 to the present season (minus 2 years). It is useful for investigating inter-annual changes in persistent vegetation cover. The statistical process used to create this product means there is a 2 year lag in producing it. For applications that focus on non-woody vegetation, the ground cover product, derived from fractional cover, may be more suitable. For applications investigating rapid change during a season, monthly composite or single-date (available on request) fractional cover products may be more appropriate. Note: A new fractional cover algorithm will be implemented during 2021, based on additional field validation and a new machine learning approach. This will lead to a new version of the persistent green product.
Summary of processing: Landsat surface reflectance data > multiple single-date fractional cover datasets > seasonal composite of fractional cover > seasonal persistent green product.
Further details are provided in the Methods section.
How to cite this collection:
Department of Environment and Science, Queensland Government (2021): Seasonal persistent green - Landsat, JRSRP algorithm, Australia coverage. Version 1.0.0. Terrestrial Ecosystem Research Network (TERN). Dataset. https://portal.tern.org.au/seasonal-persistent-green-australia-coverage/22025
This data can be accessed from the following websites
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