Leaf phenology synchrony for Meso- and South America v2
type: Dataset
citation: George, C.T., Weedon, G.P., Hayman, G., Gerard, F.F. (2019). Leaf phenology synchrony for Meso- and South America v2. NERC Environmental Information Data Centre. (Dataset). https://doi.org/10.5285/dae416b4-3762-45bd-ae14-c554883d482c
description: The leaf phenology product presented here shows the amplitude of annual cycles observed in MODIS (Moderate Resolution Imaging Spectroradiometer) normalized difference vegetation index (NDVI) and enhanced vegetation index (EVI) 16-day time-series of 2000 to 2013 for Meso- and South America. The values given represent a conservative measure of the amplitude after the annual cycle was identified and tested for significance by means of the Lomb-Scargle Transform. The amplitude was derived for four sets of vegtation indices (VI) time-series based on the MODIS VI products (500m MOD13A1; 1000m MOD13A2). The amplitude value can be interpreted as the degree in which the life cycles of individual leaves of plants observed within a pixel are synchronised. In other words, given the local variation in environment and climate and the diversity of species leaf life cycle strategies, an image pixel will represent vegetation communities behaving between two extremes: * well synchronized, where the leaf bud burst and senescence of the individual plants within the pixel occurs near simultaneously, yielding a high amplitude value. Often this matches with an area of low species diversity (e.g. arable land) or with areas where the growth of all plants is controlled by the same driver (e.g. precipitation). * poorly synchronized, where the leaf bud burst and senescence of individual plants within a pixel occurs at different times of the year, yielding a low amplitude value. Often this matches with an area of high species diversity and/or where several drivers could be controlling growth.
is accessible for free: true
date published: 2019-01-09
keywords: enhanced vegetation index (EVI)
keywords: normalized difference vegetation index (NDVI)
keywords: vegetation index (VI)
keywords: Phenology
creator: George, C.T.
creator: Weedon, G.P.
creator: Hayman, G.
creator: Gerard, F.F.
temporal coverage: 2000-01-01/2013-12-31
spatial coverage: bbox0
license: Open Government Licence v3
distribution: distribution0
publisher: NERC EDS Environmental Information Data Centre
provider: NERC EDS Environmental Information Data Centre
included in data catalog: Environmental Information Data Centre

Phenology
type: DefinedTerm

gdj3.87
type: CreativeWork
citation: Gerard, F.F., George, C.T., Hayman, G., Chavana‐Bryant, C., & Weedon, G.P. (2020). Leaf phenology amplitude derived from MODIS NDVI and EVI: Maps of leaf phenology synchrony for Meso‐ and South America. In Geoscience Data Journal (Vol. 7, Issue 1, pp. 13–26). Wiley.

Environmental Information Data Centre
type: DataCatalog
alternate name: EIDC

NERC EDS Environmental Information Data Centre
type: Organization

Open Government Licence v3
type: CreativeWork
alternate name: OGL-UK-3.0

geoshape0
type: GeoShape
box: -120.685 -58.002, -32.091 33.843

George, C.T.
type: Person
family name: George
given name: C.T.
affiliation: UK Centre for Ecology & Hydrology

Weedon, G.P.
type: Person
family name: Weedon
given name: G.P.
affiliation: Met Office

Hayman, G.
type: Person
family name: Hayman
given name: G.
affiliation: UK Centre for Ecology & Hydrology

Gerard, F.F.
type: Person
family name: Gerard
given name: F.F.
affiliation: UK Centre for Ecology & Hydrology

distribution0
type: DataDownload
encoding format: text/directory

UK Centre for Ecology & Hydrology
type: Organization

Met Office
type: Organization