Model Simulations of the Boundary-Layer Evolution over an Arid Andes Valley |
| |
Authors: | Inge Bischoff-Gauß Norbert Kalthoff Samiro Khodayar Melitta Fiebig-Wittmaack Sonia Montecinos |
| |
Institution: | (1) Institute for Scientific Computing, Karlsruhe Research Centre, Postfach 3640, 76021 Karlsruhe, Germany;(2) Institute for Meteorology and Climate Research, Karlsruhe Research Centre/University of Karlsruhe, Karlsruhe, Germany;(3) Departamento de Matemática, Universidad de La Serena, La Serena, Chile;(4) Centro de Estudios Avanzados en Zonas Aridas (CEAZA), La Serena, Chile |
| |
Abstract: | The boundary layer of the Elqui valley in the arid north of Chile exhibits several interesting phenomena, such as a very shallow
convective boundary layer (CBL) during the day. In the morning, warming is observed in and above the CBL, while the humidity
decreases in the CBL. At midday, in and above the CBL of the valley, the temperature stagnates. In the afternoon in the CBL
the temperature decreases and humidity increases, although the latent heat flux is very low. Because the characteristic features
of the valley atmosphere are hard to interpret from observations alone, model simulations were applied. The simulations indicate
that all components of the budget equations, i.e. the turbulent flux divergences, advection via the sea breeze, the upvalley
and upslope wind systems, as well as subsidence, contribute to the evolution of the valley atmosphere. |
| |
Keywords: | Elqui valley Heat budget Moisture budget Sea breeze Valley winds |
本文献已被 SpringerLink 等数据库收录! |
|