| Full text | |
| Author(s): |
Curtarelli, Marcelo Pedroso
[1]
;
Alcantara, Enner
[2]
;
Renno, Camilo Daleles
[1]
;
Assireu, Arcilan Trevenzoli
[3]
;
Bonnet, Marie Paule
[4]
;
Stech, Jose Luiz
[1]
Total Authors: 6
|
| Affiliation: | [1] Natl Inst Space Res, BR-12227010 Sao Jose Dos Campos, SP - Brazil
[2] Sao Paulo State Univ, Dept Cartog, Presidente Prudente, SP - Brazil
[3] Univ Fed Itajuba, Nat Resource Inst, Itajuba, MG - Brazil
[4] Univ Toulouse, Toulouse - France
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | WATER AND ENVIRONMENT JOURNAL; v. 28, n. 4, p. 516-525, DEC 2014. |
| Web of Science Citations: | 9 |
| Abstract | |
Diurnal variations in surface circulation, heat budget and thermal structure were investigated in a tropical reservoir using a synergistic approach that combines in situ observations, remote-sensing data and numerical modelling. The study area, the Itumbiara Reservoir (Brazil) at the beginning of the austral winter, is characterized by the presence of a weak thermal stratification and the passage of several cold fronts. Both in situ observations and numerical modelling showed that the surface circulation is wind-driven. The strongest water current was observed at 13:00h, which lagged behind the strongest wind. The daily heat budget was negative during the period and was controlled by short-wave radiation and latent heat flux. The diurnal cycle of stratification was at its maximum at 17:00h, and the surface mixed layer deepens at night. The colder waters of the Paranaiba River contribute to the stability of the water column near the river-reservoir transition zone. (AU) | |
| FAPESP's process: | 08/57719-9 - Program on Climate Change - INCT CLIMA |
| Grantee: | Carlos Afonso Nobre |
| Support type: | Research Program on Global Climate Change - Thematic Grants |
| FAPESP's process: | 10/15075-8 - Numerical Study of Circulation and Thermodynamics of Itumbiara Reservoir Water |
| Grantee: | Enner Herenio de Alcântara |
| Support type: | Scholarships in Brazil - Post-Doctorate |
| FAPESP's process: | 07/08103-2 - Study of circulation, water quality and land use in the Itumbiara Reservoir hydrographic basin |
| Grantee: | José Luiz Stech |
| Support type: | Regular Research Grants |