Modelling in the Coquimbo Modelling in the Coquimbo RegionRegion

Melitta Fiebig WittmaackMelitta Fiebig Wittmaack++

Inge Bischoff-Gauss (IWR/FZK)Inge Bischoff-Gauss (IWR/FZK)++

Orlando AstudilloOrlando Astudillo

¿What is KAMM?

• Karlsruhe Mesoscale Atmospheric Model (Adrian and Fiedler .)

• non- hydrostatic

• complex topography (terrain following coordinate system)

• chemical module coupling, aerosol module coupling, etc.

Datos de entrada requeridos:

+ vertical soundings of wind, temperature and humidity

Input:

Output:

3D distributions of

wind temperature humidity

concentrations of chemical species

First step: the larger flow-field with coarse discretization (Kalthoff et al. 2002)

t < 2 sec, x = 4.7 km H = 15 km

Second step: smaller simulation area with finer discretization and 1 nesting

a: Δx = 1461 m, Δy = 1788 m

i: Δx = 730.5 m, Δy = 894 m

Third step: The influence of the Embalse Puclaro on the local climate; 3 nestings and finest discretization (with Inge Bischoff-Gauß, IWR)

Simulated potential temperature rel. humidity on a summer day

March 2000, Dec. 2001, Nov. 2003 Radiosoundings at La Serena, Vicuña and Cerro Tololo

December 2001 Turbul. measurements at Cerro Tololo