Estudio de la variación de la dinámica atmosférica con altura en la provincia de Chimborazo

Abstract

The aim of this work was to study the variability in the atmospheric dynamics in the province of Chimborazo due to its complex topographic distribution by applying the Monin - Obukhov model obtained from the Navier - Stokes system of non-linear equations. To do so, we proceeded to access the meteorological database of the alternative energy and environment group (GEAA), obtaining variables such as wind speed, temperature, humidity, pressure, and solar radiation from four different altitudes throughout the province. The variability in atmospheric dynamics is characterised by the different thermodynamic fluxes present in the environment in the form of sensible heat flux, kinematic heat flux from the ground to the air, net radiation, and cloudiness. These values were obtained through data processing in MATLAB considering the ground roughness parameter (𝑧0) for each station chosen in the order of lowest altitude above sea level to highest altitude, for Cumandá due to its forested location, in Multitud and Urbina for its mountain type location and for ESPOCH for its location in the middle of buildings and urbanisation. The Monin-Obukhov longitude obtained will serve as a parameter to determine the instability or stability of the atmospheric dynamics at different altitudes in the period from January to July 2021. The results show that at the Cumandá and Multitud stations the atmospheric conditions tend to be extremely stable, while at ESPOCH and Urbina the conditions tend to be similar at certain times of the day, varying between extremely stable at night and extremely unstable during the day. A continuous study of the variability in atmospheric dynamics is recommended to make climate predictions for the near future.