Why is it important?

A growing population and economy together with climate change are putting pressure on fresh water availability around the globe.

SEN-ET is the Estimation of evapotranspiration (ET) based on the Sentinel satellites. By providing insights in ET we can improve irrigation efficiency. Thus assisting in monitoring several of the UN Sustainable Development Goals (SDGs), in particular: SDG2 – zero hunger, and SDG6 – clean water and sanitation.

Project highlights:

Developing an optimal methodology for estimating ET at both fine (tens of meters) and coarse (kilometer) spatial scales, based on synergistic use of Sentinel 2 and Sentinel 3 satellites’ observations

Robustly validating the estimated ET in numerous land use classes and climatic conditions, with special focus on agricultural areas

Implementing the method as an open source application, with free and open access to the code and application, integrated into existing software tools

In more detail..

SEN-ET (SENtinel EvapoTranspiration) is an Earth Observation application project funded by the European Space Agency (ESA).

The main objective of SEN-ET is to develop an open source implementation method for estimation of evapotranspiration, both at fine (tens of meters) and coarse (kilometre) spatial scales, based on the synergistic use of Sentinel 2 and 3 satellites.

The project focuses on agricultural applications of ET but also involves evaluating the model output in other land-covers (e.g. forest).

The project consists of three phases:

1. Reviewing of existing methodologies for estimation of ET and for bridging the spatial gap between S2 and S3 observations.

2. Prototyping and benchmarking the most promising approaches and evaluating the outputs in a number of ecosystems.

3. Fully implementing the best performing approach as an open-source software application.

A number of key users are expected to benefit from the developed ET modelling application.
Among them are:

  • Agriculturalists and organisations serving the needs of agriculturalists
  • Scientists and research organisations working in the fields of agriculture, hydrology and remote sensing
  • Data providers
  • Regional, national and international governmental and non-governmental organisations and initiatives

European Space Agency:

The European Space Agency (ESA) is the European space programme and its mission is to explore Earth, its immediate space environment, our Solar System and the Universe.

ESA also works closely with space organisations outside Europe to develop satellite-based technologies and services, and to promote European industries.

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