Analysis and modelling of turbulent fluxes in two different ecosystems in Argentina. (2015)

• Record Type: Journal Article
• Authors: Ulke, Ana Graciela; Gattinoni, Natalia Noemí; Posse, Gabriela
• Is Part Of: International journal of environment and pollution. Volume 58:Number 1/2(2015)
• Page Start: 52
• Page End: 62
• Publication Date: 2015
• Subjects: turbulent fluxes -- mixing height -- mesoscale models -- analytical models -- turbulence modelling -- ecosystems -- Argentina -- simulation -- native forests -- sensible heat flux -- latent heat flux -- commercial plantations -- soil moisture -- boundary layer height; Environmental policy -- Periodicals; Environmental engineering -- Periodicals; Environmental sciences -- Periodicals; Pollution -- Periodicals; 363.73
• Languages: English
• ISSNs: 0957-4352

Abstract

Turbulence data measured with fast response instruments at two sites with distinct conditions were available. The ability of a mesoscale model in the simulation of turbulent fluxes and boundary layer height was assessed in case studies covering periods in the Southern Hemisphere summer and winter. The energy apportionment at both locations was properly reproduced. In summer, at the site with native forest, the sensible heat flux was well estimated and the latent heat flux was underestimated. At the other site (commercial plantation) the sensible heat flux was properly represented and the latent heat flux was slightly overestimated. In winter, the best results were obtained at the implanted forest site. The performance of the model at the native forest site was very satisfactory when homogeneous initial soil moisture was considered. A model intercomparison between the boundary layer height obtained with an analytical model and the mesoscale model showed the influence of data and methodologies used in the two approaches.