Accessing the Potential of Satellite and Telemetric Data to Evaluate the Influence of the Heat Flux Exchange in the Water Column Mixing and Stratification
- 1 Department of Cartography, Sao Paulo State University (UNESP), Presidente Prudente, Brazil
Abstract
The objective of this work is to evaluate the feasibility of moderate resolution satellite data estimating the surface heat balance in a tropical hydroelectric reservoir. Each component of the heat flux balance was computed using the MODIS (Moderate Resolution Imaging Spectroradiometer) water surface temperature (WST) level 2, 1 km nominal resolution data (MOD11L2, version 5) from 2003 to 2008. The consequence of the heat flux exchange in the water column thermal structure is also investigated. The passage of cold front over a region decreases the atmospheric pressure and air temperature, enhancing the relative humidity. The sensible flux presents a small variability but an increase occurs due to a convective turbulence caused by front passage. The latent flux decrease but insufficiently to cause a condensation, just the evaporation decreases. The upwelling events are the responsible to maintain the loss of heat after the cold front pas- sage.
- W. Ambrosetti, L. Barbanti and N. Sala, “Residence Time and Physical Processes in Lakes,” Journal of Limnology, Vol. 63, No. 1, 2002, pp. 1-15.
- D. Uhlmann, “Reservoirs as Ecosystems,” International Review of Hydrobiology, Vol. 83, 1998, pp. 13-20.
- D. Oesch, J.-M. Jaquet, R. Klaus and P. Schenker, “Multi-Scale Thermal Pattern Monitoring of a Large Lake (Lake Geneva) Using a Multi-Sensor Approach,” Inter- national Journal of Remote Sensing, Vol. 29, 2008, pp. 5785-5808. doi:10.1080/01431160802132786
- A. Reinart and M. Reinhold, “Mapping Surface Tem- perature in Large Lakes with MODIS Data,” Remote Sensing of Environment, Vol. 112, No. 2, 2008, pp. 603-611. doi:10.1016/j.rse.2007.05.015
- E. T. Crosman and J. D. Horel, “MODIS-Derived Surface Temperature of the Great Salt Lake,” Remote Sensing of Environment, Vol. 113, No. 1, 2009, pp. 73-81.doi:10.1016/j.rse.2008.08.013
- S. Thiemann and H. Schiller, “Determination of the Bulk Temperature from NOAA/AVHRR Satellite Data in a Midlatitude Lake,” International Journal of Applied Earth Observation and Geoinformation, Vol. 4, No. 4, 2003, pp. 339-349. doi:10.1016/S0303-2434(03)00021-7
- S. G. Schladow, S. O. Palmarsson, T. E. Steissberg, S. J. Hook and F. J. Prata, “An Extraordinary Upwelling Event in a Deep Thermally Stratified Lake,” Geophysical Research Letters, Vol. 31, 2004, pp. 1-4.
- T. E. Steissberg, S. J. Hook and S. G. Schladow, “Char- acterizing Partial Upwellings and Surface Circulation at Lake Tahoe, California-Nevada, USA with Thermal Infrared Images,” Remote Sensing of Environment, Vol. 99, No. 1-2, 2005, pp. 2-15.
- E. Alcantara, E. Novo, J. Stech, J. Lorenzzetti, C. Barbosa, A. Assireu and A. Souza, “A Contribution to Understanding the Turbidity Behavior in an Amazon Flood-plain,” Hydrology and Earth System Science, Vol. 14, 2010, pp. 351-364. doi:10.5194/hess-14-351-2010
- E. Alcantara, M.-P. Bonnet, A. T. Assireu, J. L. Stech, E. M. L. M. Novo and J. Lorenzzetti, “On the Water Thermal Response to the Passage of Cold Fronts: Initial Results for Itumbiara Reservoir (Brazil),” Hydrology and Earth System Sciences Discussions, Vol. 7, No. 6, 2010, pp. 9437-9465. doi:10.5194/hessd-7-9437-2010
- J. L. Stech, I. B. T. Lima, E. M. L. M. Novo, C. M. Silva, A. T. Assireu, J. A. Lorenzzetti, J. C. Carvalho, C. C. F. Barbosa and R. R. Rosa, “Telemetric Monitoring System for Meteorological and Limnological Data Acquisition,” International Association of Theoretical and Applied Limnology, Vol. 29, No. 4, 2006, pp. 747-1750.