Dataset topic category |
|
Language |
|
Use limitations |
There are no access use and constraints to the data it is open and the code is freely available from this repository: https://github.com/gena/aqua-monitor. All attributions however to the research paper and Aqua Monitor should site the original authors.
|
Dataset reference date |
September 1, 2016
|
Temporal extent's start date |
September 24, 2016
|
Temporal extent's end date |
September 24, 2016
|
GeoNames |
- Cambodia
- China
- Lao People's Democratic Republic
- Myanmar
- Thailand
- Viet Nam
|
West bounding coordinates |
92.17253804236762 |
East bounding coordinates |
109.46331063110017 |
South bounding coordinates |
5.608182318758175 |
North bounding coordinates |
28.550256359886635 |
Spatial Reference System |
WGS 84 (EPSG:4326) (CRS:84) |
Positional Accuracy |
The Aqua Monitor uses Landsat images at 30 m resolution to establishes water-land and land-water occurrence on-the-fly by estimating the MNDWI spectral index values and performing trend analysis for these MNDWI values over both user-selected periods. The exported assess provided are at a 300 m resolution. Accuracy is dependent on available images.
|
Logical Consistency |
There are no known issues with logical consistency.
|
Completeness |
Preliminary analysis using the Aqua Monitor yields only static accumulated changes over the select periods and does not represent standing water. Calculations are only collected during years where images are available.
|
Process Step |
The Aqua Monitor was used to extract 300m assets from Google Earth Engine, clipped to the Greater Mekong Region and area calculations made. The source code is available at:
https://code.earthengine.google.com/8c9befdc51507fc8c81c2760eb16e87b
Further details of the development of the tool can be found in the Aqua Monitor Supplementary Information document.
|
Lineage |
Donchyts, Gennadii; Baart, Fedor; Winsemius, Hessel; Gorelick, Noel; Kwadijk, Jaap; van de Giesen, Nick. "Earth's surface water change over the past 30 years". Nature Climate Change. 2016/09, volume 6, issue 9, page 810-813. Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved.SN - 1758-678Xhttp://www.nature.com/nclimate/journal/v6/n9/full/nclimate3111.html
|
Responsible party |
Gennadii Donchyts Deltares, Boussinesqweg 1, 2629 HV, Delft, The Netherlands Email: gennadii.donchyts@deltares.nl
|
Metadata creator information |
EWMI-ODI, No. 43 Street 208, Sanfkat Beng Taing, Khan Daun Penh, Phnom Oenh, Cambodia.
Tel: (855) 12-302-967
www.opendevelopmentmekong.net
|
License |
unspecified
|
Copyright |
Yes |
Version |
1.0 |
Date uploaded |
September 24, 2016, 14:22 (UTC)
|
Date modified |
December 17, 2020, 19:20 (UTC)
|