1. Zentralanstalt für Meteorologie und Geodynamik A re-evaluation of the role of subsidence in valley and basin warming Thomas Haiden

2. Zentralanstalt für Meteorologie und Geodynamik 08-18-2009 13th AMS MESO Conf Two concepts in mountain CBL theory Compensating subsidence Equilibrium slope flow (Prandtl-type) Additional insights into valley and basin warming

3. Zentralanstalt für Meteorologie und Geodynamik 08-18-2009 13th AMS MESO Conf Subsidence Upper Inn valley slope flow subsidence

4. Zentralanstalt für Meteorologie und Geodynamik 08-18-2009 13th AMS MESO Conf Mass budget Uw b D

5. Zentralanstalt für Meteorologie und Geodynamik 08-18-2009 13th AMS MESO Conf Heat budget U H Slope Valley w

6. Zentralanstalt für Meteorologie und Geodynamik 08-18-2009 13th AMS MESO Conf Heat budget U H Slope Prandtl type equilibrium flow w

7. Zentralanstalt für Meteorologie und Geodynamik 08-18-2009 13th AMS MESO Conf Heat budget U H constraint on upslope mass-flux w

8. Zentralanstalt für Meteorologie und Geodynamik 08-18-2009 13th AMS MESO Conf Heat budget H equivalent to direct horizontal heat input

9. Zentralanstalt für Meteorologie und Geodynamik 08-18-2009 13th AMS MESO Conf Heat budget Temperature evolution in valley atmosphere can be modelled without explicitly simulating slope wind layer

10. Zentralanstalt für Meteorologie und Geodynamik 08-18-2009 13th AMS MESO Conf Meteor Crater Test of horizontal heat input concept under near-ideal conditions

11. Zentralanstalt für Meteorologie und Geodynamik 08-18-2009 13th AMS MESO Conf Meteor Crater The model (1.5-D) Simple horizontal heat input model, with dry-adiabatic adjustment Realistic area-height distribution of the crater Sensible heat flux parameterized based on detailed radiation distribution

12. Zentralanstalt für Meteorologie und Geodynamik 08-18-2009 13th AMS MESO Conf Meteor Crater Subsidence signal

13. Zentralanstalt für Meteorologie und Geodynamik 08-18-2009 13th AMS MESO Conf Heating modes Same warming at all heights Strongest warming in stable layer Upslope mass-flux in EQ Upslope mass-flux Non-EQ

14. Zentralanstalt für Meteorologie und Geodynamik 08-18-2009 13th AMS MESO Conf Heating modes

15. Zentralanstalt für Meteorologie und Geodynamik 08-18-2009 13th AMS MESO Conf Conclusions Horizontal heat input is good approximation Can be applied to realistic topography If not fulfilled, deviation from Prandtl-type equilibrium flow Slope flow non-local Slope flow uses up surplus temperature to remain continuous Stable layer more of an obstacle over steeper slope