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ICAM 2011 Oral presentations

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Keynote Talks

Evelyne Richard

Towards a mesoscale ensemble hydro-meteorological prediction system for the north-western


Vanda Grubišić

Wave-induced boundary-layer separation and turbulence

Session 1: Dynamics

Richard Werner

Course of streaming situations over the Alps from 1961 to 2003 for 850 hPa

Ian Renfrew

A climatology of wintertime barrier winds off southeast Greenland

Andrew Elvidge

Boundary layer evolution during a westerly föhn warming event across the Antarctic Peninsula, as observed during the Orographic Flows and Climate of the Antarctic Peninsula (OFCAP) field season.

Lavinia Laiti

Analysis of the thermal structure of the “Ora del Garda” wind from airborne and surface measurements

Ivana Stiperski

Influence of secondary orography on boundary-layer separation and rotors

Session 2: Dynamics

Dale Durran

Trapped waves and low-level orographic drag in a slowly evolving flow

Miguel Teixeira

The importance of friction in mountain wave drag enhancement by parametric resonance

Victoria Smith

A hypothesis to demonstrate the limitation of modelling rotors and sub-rotors in two dimensions

Jože Rakovec

The inner structure of the Bora flow

Ólafur Rögnvaldsson

Extreme south-westerly windstorms in Borgarfjörður in 2011 and in the 10th Century

Georg Mayr

What comes first: downslope wind (föhn) or the wave aloft? A case study from T-REX.

Session 3: Precipitation - Modelling and Theory

Samantha Smith

Sensitivity of orographic enhancement of precipitation to horizontal resolution in the operational Met Office NWP model

Dirk Cannon

A scaling of orographic precipitation for both stratiform and convective clouds

Daniel Kirshbaum

Cumulus broadening and precipitation enhancement over steep terrain

Session 4: Precipitation - Observations and Case Studies

Ronald Smith

Orographic precipitation in the tropics: The Dominica Experiment

Faisal Boudala

Observation of precipitation and precipitation type in complex terrain during the 2010 Winter Olympics in Vancouver and its impact on visibility: Implication for numerical weather prediction models

Fanny Duffourg

Origin and transport of the moisture supply to the Mediterranean heavy precipitating events

Silvia Terzago

Solid and liquid precipitation variability in the Western Italian Alps and links to large scale forcings

Birthe Marie Steensen

The role of mountains in an extreme precipitation event in central Norway

Session 5: Field Experiments - COPS

Andreas Behrendt

COPS science questions revisited: What have we learned from COPS?

Christophe Merlet

Convective inhibition over the Vosges and water vapour variability during COPS IOP 8b

Kersten Schmidt

Detailed flow, hydrometeor and lightning characteristics of an isolated, hail producing thunderstorm during COPS

Alan Blyth

A case study of convection initiation on 6 August 2007 during COPS

Christian Barthlott

Impact of soil moisture on convection-related parameters and convective precipitation over complex terrain: A numerical case study for COPS IOP 15a

Session 6: Field Experiments - From ALPEX to HYMEX

Norbert Kalthoff

Analysis of boundary layers with dry and moist convection over a mountain top – observations from the COPS campaign

Romi Sasse

Impact of synoptic situations and topography on the regional atmospheric water budget: A balance related approach using COSMO-CLM simulations and COPS observations

Hans Volkert

Lessons learnt from field experiments: Inspection of the ALPEX-PYREX-MAP-COPS chain

Véronique Ducrocq

HyMeX - the Mediterranean coastal orographic heavy precipitation field campaign (SOP1 - fall 2012)

Session 7: Snow, Volcanic Ash and Measurements

Vanda Grubišić

High-resolution simulation of seasonal snowfall over the Colorado Rockies Headwaters region and some impacts of climate change

Guðrún Nína Petersen

The impact of the atmospheric flow on the Eyjafjallajökull eruption plume and resuspened ash during and after the eruption

Reinhold Steinacker

A low cost device for using tipping bucket ombrometers in winter

Session 8: Cold-Air Pools

David Whiteman

Overview of the Persistent Cold-Air Pool Study (PCAPS) Field Program

John Horel

Estimating the intensity of persistent cold-air pools

Peter Sheridan

Relating cold air pool formation to synoptic conditions during the COLPEX field campaign

Simon Vosper

Very high resolution model simulations of cold-air pooling in complex terrain during COLPEX

Volker Horlacher

Turbulence spectra during cold pooling events within complex terrain

Session 9: Slope and Coastal Flows

Dino Zardi

An analytic solution for periodic thermally driven flows on an infinite slope - Defant (1949) revisited.


Manuela Lehner

Large-eddy simulations of thermally driven cross-basin winds using WRF

Branko Grisogono

An analytic and LES study of the pure katabatic low-level jet

Haraldur Ólafsson

The sea breeze and the upslope wind

Session 10: Boundary Layer Evolution and Turbulent Flows

Mathias Rotach

On the spatial (in)homogeneity of boundary layers in complex terrain

Stefano Serafin

Daytime development of the boundary layer over a plain and in a valley under fair weather conditions: A comparison by means of idealized numerical simulations

Sebastian W. Hoch

Evolution of wintertime temperature, humidity and wind profiles in a deep open-pit copper mine and in the adjacent Salt Lake Valley

Bianca Adler

Warm air intrusions in Arizona’s meteor crater – evidence for hydraulic jumps?

Rosey Grant

An observational dataset of canopy air flows over complex terrain

Session 11: Surface Fluxes

Temple R. Lee

Temperature variations along slope and ridge locations in the Blue Ridge Mountains and their relationship to temperatures in the free atmosphere

Lorenzo Giovannini

Analysis of the urban thermal fingerprint of the city of Trento in the Alps

Megan Daniels

Evaporation versus heating: links between soil moisture and surface fluxes in an alpine valley

Samiro Khodayar

The impact of soil moisture on seasonal climate simulations of precipitating convection over a complex terrain

Session 12: Nowcasting and High-Resolution Forecasting

George A. Isaac

Improving our ability to nowcast winter weather in complex terrain

Georg Pistotnik

Including a life cycle of convective cells in precipitation nowcasting

Hálfdán Ágústsson

High-resolution simulations of mountain weather improved with observations from small unmanned aircraft

Ralph Burton

WRF volcano modelling studies

Session 13: Precipitation Verification

Thomas Haiden

Analysis of global model precipitation forecast skill in mountain areas

Theresa Gorgas

Quantifying verification measure uncertainty due to reference data selection

Sarah Umdasch

An intercomparison of high resolution NWP models during MAP D-PHASE

Session 14: Forecasting and Modelling

Kirsty Hanley

Predictability of convection over orography: high-resolution ensemble forecasts from the Unified Model

Stuart Webster

High-resolution wind resource modelling in complex terrain using the Met Office Unified Model.

Saša Gaberšek

Simulations of idealized mesoscale phenomena with a 2D spectral element model

Günther Zängl

Simulation of airflow over steep mountains: pushing the limits of terrain-following coordinates

Craig Smith

On subgrid model choice for eddy resolving simulations of katabatic flows

Session 15: Data Assimilation and Climate

Bruce Ingleby

Assimilation of surface data in mountainous areas

Olivier Caumont

Towards the assimilation of near-surface refractivity measurements from weather radars: meteorological value, data quality, and monitoring

Tim Appelhans

Climate dynamics of the Kilimanjaro region: A field measurement campaign to investigate climatological drivers of a tropical montane ecosystem.

Heidi Escher-Vetter

Statistical analysis of air temperature, precipitation and discharge records since 1974 from a high Alpine Site (Pegelstation Vernagtbach, Oetztal Alps, Austria)