Aqua Monitor Surface Water Gain (1985-2016)

The Deltares Aqua Monitor is an open tool that detects land and water conversions globally, during the last 30 years at 30m resolution. Results of the Aqua Monitor only show compound impacts of natural and human change or variability but does not look into water and sediment budgets which would be required to determine the causes of these changes. Static maps have been exported from the tool which displays accumulative land and water changes between 1985-2016. For further detail on the methodology see Nature Climate Change paper: http://nature.com/nclimate/journal/v6/n9/full/nclimate3111.html.

Data Resources (3)

Data Resource Preview - Surface Water Gain 300m

Additional Info

Field Value
Dataset topic category
  • Environmental impact assessments
  • Water resources
Language
  • English
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 2016-09-01
Temporal extent's start date 2016-09-23
Temporal extent's end date 2016-09-23
GeoNames
  • Cambodia
  • Viet Nam
  • Lao People's Democratic Republic
  • Thailand
  • Myanmar
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 - 1758-678X http://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 23, 2016, 11:45 (UTC)
Date modified September 30, 2016, 08:54 (UTC)