Análisis y caracterización de la capa superficial atmosférica
ENGLISH ABSTRACT This doctoral thesis aims at contributing to the improvement of the understanding of the thermal and dynamic structure of the atmospheric surface layer. It is based on the analysis of data collected in experiments, in which different exploratory instruments are used. The investigation was developed in three parts: the microclimatology, the closure problem and the analysis of the nocturnal surface layer. The microclimatology analysis helps to characterize the average behaviour of the thermodynamic variables in the atmospheric surface layer. The closure problem appears in the set of equations of the turbulent flow. We approach the problem from two different perspectives. On the one hand, we use the similarity theory (zero-order closure) where we present new parameterisations of the mean values of the main atmospheric variables. On the other hand, we find parameterisations of the turbulent statisticians (one-order closure) from mean wind and thermal gradient. The nocturnal surface layer analysis includes the characterization of the stable regimens and the study of different phenomena that happen in these stable regimens, such as the intermittence turbulence, the drainage flow and the Kelvin-Helmholtz instabilities.
Advisor:Soler Duffour, Maria Rosa
School:Universitat de Barcelona
Source Type:Master's Thesis
Keywords:astronomia i meteorologia
Date of Publication:12/17/2003