| Full text | |
| Author(s): |
Chamecki, Marcelo
[1]
;
Freire, Livia S.
[2]
;
Dias, Nelson L.
[3]
;
Chen, Bicheng
[1]
;
Dias-Junior, Cleo Quaresma
[4]
;
Toledo Machado, Luiz Augusto
[5, 6]
;
Sorgel, Matthias
[5]
;
Tsokankunku, Anywhere
[5]
;
de Araujo, Alessandro C.
[7]
Total Authors: 9
|
| Affiliation: | [1] Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA 90007 - USA
[2] Univ Sao Paulo, Inst Math & Comp Sci, Sao Carlos - Brazil
[3] Fed Univ Parana UFPR, Dept Environm Engn, Curitiba, Parana - Brazil
[4] Fed Inst Para IFPA, Dept Phys, Belem, Para - Brazil
[5] Max Planck Inst Chem, Atmospher Chem Dept, Mainz - Germany
[6] Inst Nacl Pesquisas Espaciais, Cachoeira Paulista - Brazil
[7] Empresa Brasileira Pesquisa Agr, Belem, Para - Brazil
Total Affiliations: 7
|
| Document type: | Journal article |
| Source: | JOURNAL OF THE ATMOSPHERIC SCIENCES; v. 77, n. 8, p. 2941-2957, AUG 2020. |
| Web of Science Citations: | 0 |
| Abstract | |
Observational data from two field campaigns in the Amazon forest were used to study the vertical structure of turbulence above the forest. The analysis was performed using the reduced turbulent kinetic energy (TKE) budget and its associated two-dimensional phase space. Results revealed the existence of two regions within the roughness sublayer in which the TKE budget cannot be explained by the canonical flat-terrain TKE budgets in the canopy roughness sublayer or in the lower portion of the convective ABL. Data analysis also suggested that deviations from horizontal homogeneity have a large contribution to the TKE budget. Results from LES of a model canopy over idealized topography presented similar features, leading to the conclusion that flow distortions caused by topography are responsible for the observed features in theTKEbudget. These results support the conclusion that the boundary layer above the Amazon forest is strongly impacted by the gentle topography underneath. (AU) | |
| FAPESP's process: | 18/24284-1 - Study on exchanges between Earth's surface and atmosphere using Large-Eddy Simulation |
| Grantee: | Livia Souza Freire Grion |
| Support Opportunities: | Research Grants - Young Investigators Grants |