EGU21-104
https://doi.org/10.5194/egusphere-egu21-104
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Spatio-temporal changes in water demand of urban greenery

Sattar Chavoshi Borujeni1, Hamideh Nouri2, Pamela Nagler3, Armando Barreto-Muñoz4, and Kamel Didan4
Sattar Chavoshi Borujeni et al.
  • 1(chsatar@gmail.com)
  • 2Department of Agronomy, University of Göttingen, Von-Siebold-Strasse 8, 37075, Göttingen, Germany
  • 3U.S. Geological Survey, Southwest Biological Science Center, 520 N. Park Avenue, Tucson, AZ 85719, USA
  • 4Biosystems Engineering. The University of Arizona, 1177 E. 4th St., Tucson, AZ 85719, USA

Accurate estimation of evapotranspiration (ET) and water demand of urban green spaces (UGS) remain critical, especially in water-limited cities. Measuring ET helps decision‐makers, urban planners and urban water managers formulate strategies and plans for sustainable green cities worldwide. In this study, we used three satellites, WorldView2, Landsat (OLI, TM5 and ETM+), and MODIS to measure the greenness and ET of a 780‐ha public green space, the Adelaide Parklands in Australia. Different satellite‐based vegetation indices (VIs) including the Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI) and Enhanced Vegetation Index 2 (EVI2) were assessed. The VI-based ET from these three satellites were estimated. We then validated these remote sensing-based ET with a field-based method of Soil Water Balance (SWB) using Artificial Neural Network (ANN). Inter‐ and intra‐annual changes of VIs and their relevant ET were mapped and analyzed during 2010-2018. Our study, using multi-sensor remote sensing data fusion, systematic methods and machine learning techniques confirmed the suitability and feasibility of remote sensing-based ET as accurate long‐term monitoring mean for ET trends over large UGS. Our techniques rely on public and free-access satellite images, and therefore, can be adapted to other water-limited cities.

How to cite: Chavoshi Borujeni, S., Nouri, H., Nagler, P., Barreto-Muñoz, A., and Didan, K.: Spatio-temporal changes in water demand of urban greenery , EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-104, https://doi.org/10.5194/egusphere-egu21-104, 2020.

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