I am an assistant professor, with an academic background in climate sciences. My teaching and research activities are mainly focussing on climate change services in natural hazard assessment. As the impact of extreme weather events can be huge in our society, we have to prepare, adapt and make ourselves more resilient. At the start of this process is adequate and reliable climate/weather information services. My fundamental interest is how extreme weather data analysis could help a better understanding of natural hazards, like flooding, drought, landslides, flash floods, etc.

Before joining Faculty ITC in 2010, I obtained my PhD at Utrecht Univerisity (2005-2010). My PhD thesis was on the present-day climate of Greenland. Between 2003 and 2005 I worked as a consultant on soil moisture data assimilation at the European Centre of Medium-Range Weather Forecasts, ECMWF, in Reading, UK. Between 2001 and 2003,  I worked on the Dutch wind climate project at the Royal Netherlands Meteorological Institute, KNMI. In 2001, I obtained my MSc degree in 'Soil, Water and Atmosphere', with meteorology as specialization. 

Expertise

  • Earth and Planetary Sciences

    • Datum
    • Rainfall
    • Greenland
    • Model
    • Investigation
    • Area
    • Ice Sheet
    • Flood

Organisations

My research focuses on the use of weather and climate information services for natural hazard assessment. This work contributes to building a more resilient society to climate change. More specifically, my research interests are:

- Analysis of extreme weather events in a changing climate

- Analysis of extreme weather as a trigger for natural hazards, such as drought, flood, flash floods, etc.

- Advanced use of weather/climate information in Earth science and other application fields, such as food security and water resources

I did my PhD at Utrecht University (2010) on regional climate modelling of Greenland, where my work provided a better understanding of the surface mass balance of the Greenland ice sheet in time and space.

Publications

2024

Using Google Earth engine for geological remote sensing (2024)[Contribution to conference › Other] 7th International Conference on Earth Science Pakistan, ESP 2024. van der Werff, H. M. A., Aufaristama, M., Ettema, J. & van der Meijde, M.

2023

A look into the influence of Sentinel-2 atmospheric correction and calibration on the repeatability of geological spectral indices (2023)[Contribution to conference › Other] 34th Geological Remote Sensing Group Annual Conference & AGM 2023. van der Werff, H. M. A., Nikolov, J. & Ettema, J.Dynamic rainfall thresholds for landslide early warning in Progo Catchment, Java, Indonesia (2023)Natural hazards, 119(3), 2133-2158. Satyaningsih, R., Jetten, V., Ettema, J., Sopaheluwakan, A., Lombardo, L. & Nuryanto, D. E.https://doi.org/10.1007/s11069-023-06208-2Dynamic rainfall thresholds for landslide early warning in Progo Catchment, Java, Indonesia (2023)[Working paper › Preprint]. Earth ArXiv. Satyaningsih, R., Jetten, V., Ettema, J., Sopaheluwakan, A., Lombardo, L. & Nuryanto, D.https://doi.org/10.31223/X5M64KAssessing the Impact of the Urban Landscape on Extreme Rainfall Characteristics Triggering Flood Hazards (2023)Hydrology, 10(1). Article 15. Umer, Y., Jetten, V., Ettema, J. & Steeneveld, G. J.https://doi.org/10.3390/hydrology10010015

2022

Looking into the effect of weather on geological spectral indices (2022)[Contribution to conference › Other] 33rd GRSG Annual Conference & AGM 2022. van der Werff, H. M. A., Ettema, J., Hewson, R., Gunaratne, C. & Sampatirao, A.How weather affects over time the repeatability of spectral indices used for geological remote sensing (2022)Remote sensing, 14(24). Article 6303. van der Werff, H., Ettema, J., Sampatirao, A. & Hewson, R.https://doi.org/10.3390/rs14246303Application of the WRF model rainfall product for the localized flood hazard modeling in a data-scarce environment (2022)Natural hazards, 111(2), 1813-1844. Umer, Y., Jetten, V., Ettema, J. & Lombardo, L.https://doi.org/10.1007/s11069-021-05117-6Precipitation regime changes in the maritime continent (2022)[Thesis › PhD Thesis - Research UT, graduation UT]. University of Twente, Faculty of Geo-Information Science and Earth Observation (ITC). Kokorev, V.https://doi.org/10.3990/1.9789036553292Advances in localized flood hazard modelling in urbanized and data-scare areas (2022)[Thesis › PhD Thesis - Research UT, graduation UT]. University of Twente, Faculty of Geo-Information Science and Earth Observation (ITC). Umer, Y. M.https://doi.org/10.3990/1.9789036553247

Research profiles

As a teacher I am involved in various MSc courses in the M-GEO and M-SE programs, which are mainly international classrooms. My activities involve:

- teaching on climate and weather in various courses

- design and coordination of courses, like the role of geo-information in a changing world, hazard and risk studio, and weather impact analysis

- mentor for students in the Master Spatial Engineering, to provide assistance to students on defining their own learning goals and give them feedback on their personal development plan

- supervisor of students in their BSc/MSc research phase on topics related to climate and weather, mostly in natural hazard studies

Courses academic year 2024/2025

Courses in the current academic year are added at the moment they are finalised in the Osiris system. Therefore it is possible that the list is not yet complete for the whole academic year.

Courses academic year 2023/2024

Address

University of Twente

Langezijds (building no. 19), room 1425
Hallenweg 8
7522 NH Enschede
Netherlands

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Organisations

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