High-resolution drought monitoring based on satellite and ground dataresearch project
Project Executive on ZRCProf. Žiga Kokalj, PhD
High-resolution drought monitoring based on satellite and ground data
CollaboratorsUrša Kanjir, PhD, Peter Pehani, Maja Somrak, Tatjana Veljanovski, PhD, Petra Vovk, Aleš Grlj, MA, Liza Stančič
Durationsince July 1, 2018 to June 30, 2021
Žiga Kokalj, PhD
Financial SourceSlovenian Research Agency
The project aims towards permanent solutions for monitoring of drought, which is one of the most frequent natural disasters. During several phases we will:
- determine and analyse the most suitable and stable drought-related indices based on optical satellite data
- develop a method for merging satellite data with ground measurements for an accurate (overall producer’s accuracy of more than 90%), high-resolution detection of drought;
- design a prototype system for a comprehensive characterization of drought in agricultural areas at a national level.
We will achieve this by examining, evaluating, and enhancing the satellite data processing techniques; data fusion of high and medium-resolution imagery (downscaling); data fusion of imagery and in-situ data; applying time series analyses and machine (deep) learning to find statistically relevant variables and models to indicate the impacted areas. We shall test the universality, comparability, and practicability of satellite-derived indices for operational use, and propose the most suited ones that can serve as proxies for environmental indicators.
The work is divided into five work packages:
• WP 1: Data collection and synchronization (complete),
• WP 2: Long-term high-resolution satellite records (90% complete),
• WP 3: Analysis of agricultural drought indicator time series (90% complete),
• WP 4: Development of a drought detection model and its verification (20% complete),
• WP 5: Evaluation of results for practical use (20% complete).