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Product pages » Enhanced Vegetation Index (EVI) - MODIS, LPDAAC MOD13Q1 mosaic despiked, Australia coverage

Enhanced Vegetation Index (EVI) - MODIS, LPDAAC MOD13Q1 mosaic despiked, Australia coverage

Last modified by Matt Paget on 2016/11/02 11:13

Enhanced Vegetation Index (EVI) - MODIS, LPDAAC MOD13Q1 mosaic despiked, Australia coverage

Spike-removal.JPG

Figure 1: Time series of EVI from the MOD13Q1 product showing spikes prior to removal.

Link to the data

DescriptorData link
Peristent URLhttp://www.auscover.org.au/purl/lpdaac-mosaic-mod13q1-v5-despiked
GeoNetwork recordhttp://www.auscover.org.au/geonetwork?uuid=7f7bbe9a-b47d-46eb-9549-529949501278
ENVIhttp://remote-sensing.nci.org.au/u39/public/data/modis/evi-cube-ga/

Data licence and Access rights

ItemDetail
RightsCopyright 2008-2012 GA. Rights owned by Geoscience Australia (GA). Rights licensed subject to Creative Commons Attribution (CC BY).
LicenceCreative Commons Attribution 3.0 License, http://creativecommons.org/licenses/by/3.0.
AccessThese data can be freely downloaded and used subject to the CC BY licence. Attribution and citation is required as described in the Citation section of the executive summary (http://www.ga.gov.au/scientific-topics/earth-obs/landcover). We ask that you send us citations and copies of publications arising from work that use these data.

Alternate title

MOD13Q1.005 data cube optimised for time series analysis with spikes/dips removed

Abstract or Summary

EVI time series over some land cover types sometimes contain 'spikes'  and sharp drops that do not represent biophysical changes on the Earth's surfaces.  These spikes need to be removed prior to further analysis.  This dataset uses an algorithm described in the technical report (http://www.ga.gov.au/scientific-topics/earth-obs/landcover) to remove spikes/sharp drops from the EVI dataset.  The dataset has also been 'transposed' from individual EVI timeslices into a datacube that can be used for multitemporal analysis.

Spatial and Temporal extents

ItemDetail
Spatial resolution (metres)250 m
Spatial coverage (degrees)(110.0 to 155.0 E, -10.0 to -45.0 N
Temporal resolution16 day composite
Temporal coverage2000-03-21 to 2011-04-23
Sensor & platformMODIS Terra
ItemDetail
Spatial representation typegrid
Spatial reference systemWGS 84

Point of contact

ItemDetail
NameLeo Lymburner
OrganisationNational Earth Observation Group, Geoscience Australia
PositionTeam Leader: Dynamic Land Cover Mapping
Emaillandcover@ga.gov.au
Roleauthor
Address
Telephone
URLhttp://www.ga.gov.au/earth-observation.html

Credit

See the Acknowledgements section of the executive summary (http://www.ga.gov.au/scientific-topics/earth-obs/landcover).

Keywords

ThesauriKeyword
GCMDEARTH SCIENCE > BIOSPHERE > VEGETATION > VEGETATION INDEX
CFnormalized_difference_vegetation_index
FoREnvironmental Sciences > Ecological Applications = 0501

There are three main thesauri that AusCover recommends:

  1. Global Change Master Directory (http://gcmd.nasa.gov)
  2. Climate and Forecast (CF) convention standard names (http://cfconventions.org/standard-names.html).
  3. Fields of Research codes (http://www.abs.gov.au/ausstats/abs@.nsf/0/6BB427AB9696C225CA2574180004463E?opendocument).

Data quality

The MOD13Q1 data quality is described at http://www.auscover.org.au/purl/lpdaac-mosaic-mod13q1-v5. This dataset takes the EVI component of the MOD13Q1 data suite and stacks it date sequentially. The stack is then filtered for spikes and drops in the data using the algorithm outlined in the technical report (http://www.ga.gov.au/scientific-topics/earth-obs/landcover).

Validation status

Despiked EVI does not require validation. Validation of the National Dynamic Land Cover product, which is derived from this product, is introduced in the executive summary (http://www.ga.gov.au/scientific-topics/earth-obs/landcover).

Related products

ItemProduct link
LPDAAC Mosaics MOD13Q1 CMARhttp://www.auscover.org.au/purl/lpdaac-mosaic-mod13q1-v5
National Dynamic Land Coverhttp://www.ga.gov.au/scientific-topics/earth-obs/landcover

References

ItemDetail or link
PublicationPeter Tan, Leo Lymburner, Medhavy Thankappan, Adam Lewis (2011), Mapping Cropping Practices Using MODIS Time Series: Harnessing the Data Explosion, Journal of the Indian Society of Remote Sensing, Volume 39, Issue 3, pp 365-372 http://dx.doi.org/10.1007/s12524-011-0124-0
Validation and technical reportLymburner L., Tan P., Mueller N., Thackway R., Lewis A., Thankappan M., Randall L., Islam A., and Senarath U., (2011), The National Dynamic Land Cover Dataset, Geoscience Australia, Symonston, ACT, Australia. Record 2011/31, pp. 95. ISBN 978-1-921954-30-6 http://www.ga.gov.au/scientific-topics/earth-obs/landcover

Algorithm summary

Details of the spike removal algorithm are contained in the technical report (http://www.ga.gov.au/scientific-topics/earth-obs/landcover).

Product version history

Version labelDetail
1.02011-11-24 Initial release

Metadata history

DateDetail
2012-03-22Metadata creation date
2013-02-15Reformatted to new template.
Added Contacts and references.
2013-10-15Edited temporal range (added one extra date on each end) to correct the number of dates to 256.
2016-11-01Updated GA landcover URL to http://www.ga.gov.au/scientific-topics/earth-obs/landcover
Tags:
Created by Matt Paget on 2013/02/15 08:26

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