ABoVE: Annual Phenology Derived from Landsat across the ABoVE Core Domain, 1984-2014 : Arctic-Boreal Vulnerability Experiment (ABoVE)

This dataset provides annual maps of the timing of spring onset with leaf emergence, of autumn onset with leaf senescence, and of peak greenness for each 30 m pixel derived from Landsat time series of Thematic Mapper (TM) and Enhanced Thematic Mapper (ETM+) observations from 1984 to 2014. The ABoVE...

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Bibliographic Details
Main Authors: Melaas, E.K., Sulla-Menashe, D., Woodcock, C.E., Friedl, M.A.
Format: Article in Journal/Newspaper
Language:English
Published: ORNL Distributed Active Archive Center 2019
Subjects:
BIOSPHERE > VEGETATION > CANOPY CHARACTERISTICS
BIOSPHERE > VEGETATION > VEGETATION INDEX > NORMALIZED DIFFERENCE VEGETATION INDEX NDVI
BIOSPHERE > VEGETATION > PLANT PHENOLOGY
LANDSAT-7 > ETM+
LANDSAT-5 > TM
Normalized Burn Ratio NBR
Normalized Difference Vegetation Index NDVI
pixels
peak greeness
Landsat phenology algorithm
Arctic
Nunavut
Yukon
Northwest Territories
Canada
British Columbia
Alaska
Online Access:https://dx.doi.org/10.3334/ornldaac/1698
https://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=1698
Description
Summary:This dataset provides annual maps of the timing of spring onset with leaf emergence, of autumn onset with leaf senescence, and of peak greenness for each 30 m pixel derived from Landsat time series of Thematic Mapper (TM) and Enhanced Thematic Mapper (ETM+) observations from 1984 to 2014. The ABoVE core domain includes 169 ABoVE grid tiles across Alaska, USA and Alberta, British Columbia, Northwest Territories, Nunavut, Saskatchewan, and Yukon, Canada. The data provided for deriving seasonality includes the total number of cloud-free observations, r-squared values between observed and spline-predicted Enhanced Vegetation Index (EVI), long-term average minimum EVI, long-term average maximum EVI, long-term average spring onset, long-term average autumn onset, annual spring onset, and annual autumn onset. The data provided for peak greenness includes annual peak Normalized Difference Vegetation Index (NDVI), Normalized Burn Ratio (NBR), annual composite red reflectance, annual composite NIR reflectance, annual composite shortwave infrared reflectance (band 6, SWIR1), annual composite shortwave infrared reflectance (band 7, SWIR2), number of dates used to calculate composites, and day of year of associated maximum composite.

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