Seminar: Mark Schlutow
Institutsseminar
- Datum: 01.08.2024
- Uhrzeit: 14:30
- Vortragende(r): Mark Schlutow
- (Zaehle department)
- Raum: Hörsaal (C0.001)
The
vulnerability of Arctic permafrost to climate change is highlighted by
its potential to release substantial amounts of organic carbon due to
enhanced thawing, posing a risk of a positive feedback mechanism within
the 1.5 °C global warming range of the Paris Agreement. Beyond carbon
release, the thawing of Arctic permafrost could significantly alter
Earth's surface in Northern high latitudes. We use high-resolution Large
Eddy Simulations and a stochastic land cover model to investigate the
impact of surface changes in the Arctic on the Atmospheric Boundary
Layer, revealing the sensitivity of the boundary layer to surface
heterogeneity. Key findings demonstrate the influence of the areal
fraction of open water bodies on sensible heat flux and the effect of
surface correlation length on the blending height, indicating potential
feedback mechanisms and the importance of these metrics in land surface
models focused on Arctic permafrost.