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Seasonal Ground Cover Statistics - Landsat, JRSRP Algorithm Version 3.0, Queensland Coverage

Parent Dataset: Seasonal ground cover - Landsat, JRSRP algorithm Version 3.0, Australia Coverage
Ver: 3.0
Status of Data: on going
Update Frequency: not planned
Security Classification: unclassified
Viewed: 0
Accessed: 0

Description

The Seasonal ground cover statistics products are long-term temporal statistic products derived from the seasonal ground cover product for each fraction across Queensland for the 30 year timeseries. There is one raster image for each season and each bare and green fraction for the full time series of imagery available. Statistics include:
band 1 – 5th percentile minimum;
band 2 – mean value for pixel over full time series for that season only (percentage + 100);
band 3 – median value for pixel over full time series for that season only (percentage + 100);
band 4 – 95th percentile maximum;
band 5 – Standard deviation - the temporal standard deviation of the full time-series for that season only;
band 6 – Count - the number of observations statistics for that pixel are based on for that season only.

Min/max (5th and 95th percentile) products are also made for each fraction using all seasonal ground cover images available during the long term data period (currently 1990-2020).


Credit
We at TERN acknowledge the Traditional Owners and Custodians throughout Australia, New Zealand and all nations. We honour their profound connections to land, water, biodiversity and culture and pay our respects to their Elders past, present and emerging.

This dataset was produced by the Joint Remote Sensing Research Program (https://www.jrsrp.org.au/) using data sourced from US Geological Survey.

Purpose
These products display the variation of the seasonal ground cover fractions over long term temporal periods (e.g. 1990-2020).
These products are based upon the JRSRP Fractional Cover 3.0 algorithm.

Supplemental Information
Processing stage:

dpj - bare min/max all seasons
dpk - green min/max all seasons
dpl - dry min/max all seasons

dpm - bare fraction summer stats
dpn - bare fraction autumn stats
dpo - bare fraction winter stats
dpp - bare fraction spring stats

dpq - green fraction summer stats
dpr - green fraction autumn stats
dps - green fraction winter stats
dpt - green fraction spring stats

Raster values indicate cover for the relevant fraction, in percent. The no data value is 255.

Data are available as cloud optimised GeoTIFF (COG) files. COG files are easier and more efficient for users to access data corresponding to particular areas of interest without the need to download the data first.


Lineage
Landsat surface reflectance data > multiple single-date fractional cover datasets > seasonal composite of fractional cover > seasonal persistent green > seasonal composite of ground cover > seasonal ground cover statistics

Data Creation

The long-term statistical summary products are derived from the seasonal ground cover product https://portal.tern.org.au/seasonal-ground-cover-australia-coverage/22022, also produced by the QLD DES remote sensing centre. The statistical products are derived from the full time series of imagery available for each season, defined by standard calendar seasons. For each pixel, the following statistics are calculated: 5th percentile, mean, median, 95th percentile, standard deviation and count.


Seasonal Statistics - 6 Band images:
band 1 - 5th percentile minimum - robust minimum value for that pixel over the length of the full time series for that season only (percentage + 100)
band 2 - mean value for pixel over full time series for that season only (percentage + 100)
band 3 - median value for pixel over full time series for that season only (percentage + 100)
band 4 - 95th percentile maximum - robust maximum value for that pixel over the length of the full time series for that season only (percentage + 100)
band 5 - Standard deviation - the temporal standard deviation of the full time-series for that season only
band 6 - Count - the number of observations statistics for that pixel are based on for that season only.
The first 4 bands are recorded with a scaling factor of 100 for data management purposes (to ensure there are no negative values in the image).


Min/Max Statistics - 2 Band images:
A two band image is produced for the Min/Max for full time series:
band 1 - 5th percentile minimum - robust minimum value for that pixel over the length of the full time series (percentage + 100)
band 2 - 95th percentile maximum - robust maximum value for that pixel over the length of the full time series (percentage + 100)


Temporal coverage

From 1/1/1990

Dates

Creation date

9/18/2015

Publication date

9/24/2024

Revision date

12/16/2024

Citation information

How to cite this collection:

Joint Remote Sensing Research Program & Department of Environment and Science (2017-2023), Queensland Government (2024): Seasonal Ground Cover Statistics - Landsat, JRSRP Algorithm Version 3.0, Queensland Coverage. Version 3.0. Terrestrial Ecosystem Research Network. (Dataset). https://portal.tern.org.au/metadata/TERN/b9c2e3d3-0dc4-4599-a1dd-6affb0ad3f74

Rights and Licensing

CC-BY

Creative Commons Attribution 4.0 International Licence
http://creativecommons.org/licenses/by/4.0

Copyright 2010-2021. JRSRP. Rights owned by the Joint Remote Sensing Research Project (JRSRP).


While every care is taken to ensure the accuracy of this information, the Joint Remote Sensing Research Project (JRSRP) makes no representations or warranties about its accuracy, reliability, completeness or suitability for any particular purpose and disclaims all responsibility and all liability (including without limitation, liability in negligence) for all expenses, losses, damages (including indirect or consequential damage) and costs which might be incurred as a result of the information being inaccurate or incomplete in any way and for any reason.


It is not recommended that these data sets be used at scales more detailed than 1:100,000.


TERN services are provided on an “as-is” and “as available” basis. Users use any TERN services at their discretion and risk. They will be solely responsible for any damage or loss whatsoever that results from such use including use of any data obtained through TERN and any analysis performed using the TERN infrastructure.
Web links to and from external, third party websites should not be construed as implying any relationships with and/or endorsement of the external site or its content by TERN.
Please advise any work or publications that use this data via the online form at https://www.tern.org.au/research-publications/#reporting


Keywords

Parameters
Platforms
Instruments
GCMD Science
ANZSRC - FOR
Horizontal Resolution
Temporal Resolution
Topic Categories

People and Organisation

AuthorsAuthors
Point of ContactPoint of Contact
PublisherPublisher
Distributor's OrganisationDistributor's Organisation

Data Quality

Data QualityData Quality
  • Data Quality Assessment Scope:
    The input imagery was processed to level L1T by the USGS. Geodetic accuracy of the product depends on the image quality and the accuracy, number, and distribution of the ground control points. The fractional cover model was compared to samples drawn from approximately 4000 field reference sites.
  • Data Quality Assessment Result:
    The USGS aims to provide image-to-image registration with an accuracy of 12m. Refer to the L8 Data Users Handbook for more detail. The fractional cover model predicts the vegetation cover fractions with MAE/wMAPE/RMSE of:
    bare - 6.9%/34.9%/14.5%
    PV - 4.6%/37.9%/10.6%
    NPV - 9.8%/25.2%/16.9%.

Additional information

Method DocumentationMethod Documentation
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