Long term (Semper) continuous water vapor and precipitation isotopic measurements (O18) in Eastern Greenland

The objectives of the SeMPER O18 project are the reconstruction of changes in the origin of precipitation and the identification of isotopic signature of mesoscale phenomena affecting the polar region in Eastern Greenland. Those goals will be achieved by continuously measuring the isotopic composition (d18O and dD) of water vapor for a total period of 6 years at Ittoqqortoormiit. Isotopic composition of precipitation will be also measured.
This project builds on the work of the transdisciplinary project SeMPER Arctic (2020-2024) that aimed at understanding the sources of resilience in the Arctic by focusing on local narratives of changes in 3 Arctic communities, including Ittoqqortoormiit. The involvement of community actors in a co-production process is a key aspect of the project, which will also be the subject of ethnographic monitoring.
The installation on site of a laser analyzer in 2022 and its follow up will enable the collection of an unparalleled series of data over more than six years, data with high added value for regional climate models.