Seminar: Mark Schlutow

Institutsseminar

  • Datum: 01.08.2024
  • Uhrzeit: 14:30
  • Vortragende(r): Mark Schlutow
  • (Zaehle department)
  • Raum: Hörsaal (C0.001)
How the weather changes when permafrost thaws?

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.


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