Journal cover Journal topic
Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 4.256 IF 4.256
  • IF 5-year value: 4.819 IF 5-year
    4.819
  • CiteScore value: 4.10 CiteScore
    4.10
  • SNIP value: 1.412 SNIP 1.412
  • SJR value: 2.023 SJR 2.023
  • IPP value: 3.97 IPP 3.97
  • h5-index value: 58 h5-index 58
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 99 Scimago H
    index 99
Discussion papers
https://doi.org/10.5194/hess-2019-5
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-2019-5
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 28 Jan 2019

Research article | 28 Jan 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Hydrology and Earth System Sciences (HESS).

Development and Validation of a Dense 18-Year Time Series of Surface Water Fraction Estimates from MODIS for the Mediterranean Region

Linlin Li1, Andrew Skidmore1,2, Anton Vrieling1, and Tiejun Wang1 Linlin Li et al.
  • 1Faculty of Geo-information Science and Earth Observation, University of Twente, Enschede, the Netherlands
  • 2School of Environmental Sciences, Macquarie University, NSW, Australia

Abstract. Detailed knowledge on surface water distribution and its changes is of high importance for water management and biodiversity conservation. Landsat-based assessments of surface water, such as the Global Surface Water (GSW) dataset developed by the European Commission Joint Research Centre (JRC), may not capture important changes in surface water during months with considerable cloud cover. This results in large temporal gaps in the Landsat record that prevent accurate assessment of surface water dynamics. Here we show that the frequent global acquisitions by the Moderate Resolution Imaging Spectrometer (MODIS) sensors can compensate for this shortcoming, and in addition allow for examining surface water changes at fine temporal resolution. To account for water bodies smaller than a MODIS cell, we developed a global rule-based regression model for estimating surface water fraction from a 500 m nadir reflectance product from MODIS (MCD43A4). The model was trained and evaluated with the GSW monthly water history datasets. A high estimation accuracy (R2 = 0.91, RMSE = 11.41 %, MAE = 6.39 %) was achieved. We then applied the algorithm to 18 years of MODIS data (2000–2017) to generate a time series of surface water fraction maps at 8-day interval for the Mediterranean. From these maps we derived metrics including the mean annual maximum, standard deviation and seasonality of surface water. The dynamic surface water extent estimates from MODIS were compared with the results from GSW and water level data measured in situ or by satellite altimetry, yielding similar temporal patterns. Our datasets complement surface water products at fine spatial resolution by adding more temporal detail, which permits effective monitoring and assessment of the seasonal, inter-annual and long-term variability of water resources, inclusive of small water bodies.

Linlin Li et al.
Interactive discussion
Status: open (until 25 Mar 2019)
Status: open (until 25 Mar 2019)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement
Linlin Li et al.
Data sets

Development and Validation of a Dense 18-Year Time Series of Surface Water Fraction Estimates from MODIS for the Mediterranean Region L. Li, A. Skidmore, A. Vrieling, and T. Wang https://doi.org/10.17026/dans-xrz-y92s

Linlin Li et al.
Viewed  
Total article views: 188 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
156 30 2 188 1 3
  • HTML: 156
  • PDF: 30
  • XML: 2
  • Total: 188
  • BibTeX: 1
  • EndNote: 3
Views and downloads (calculated since 28 Jan 2019)
Cumulative views and downloads (calculated since 28 Jan 2019)
Viewed (geographical distribution)  
Total article views: 73 (including HTML, PDF, and XML) Thereof 73 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Cited  
Saved  
No saved metrics found.
Discussed  
No discussed metrics found.
Latest update: 16 Feb 2019
Publications Copernicus
Download
Short summary
We derived an 8-day 500 m resolution surface water fraction product over the Mediterranean for 2000–2017 based on MODIS and SRTM data. Our dataset could serve as a tool for (a) monitoring the seasonal, inter-annual and long-term dynamics of surface water extent especially in arid and semi-arid areas; (b) updating and refining of existing wetland and habitat databases; and (c) evaluating ecosystem services and biodiversity assessments.
We derived an 8-day 500 m resolution surface water fraction product over the Mediterranean for...
Citation