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Interannual Variability of Energy flux in Atmospheric Instability Conditions at Pantanal of Mato Grosso-Brazil

Atmospheric and Climate Sciences 2012年第4期2卷 518-524页

作者： leone f.a.cisco a.orim curado José de Souza Nogueira Luciana Sanches Marcelo Sacardis Biudes Thiago Rangel Rodrigues Programa de Pós-Graduacao em física Ambiental-UfMT Brazil

The energy balance partitions in wetlands have gained notoriety due to the dynamics and importance of these areas for regional and local climate. Thus, the study was conducted about seasonal and interannual behavior energy fluxes, as well as the influences of the conditions of atmospheric stability and instability. The results showed highest fluxes happened in instability atmospheric conditions. The fluxes of latent and sensible heat showed seasonal variation, indicating that the water availability in the atmosphere has influence on the site energy partition, but the interannual patterns remained similar during the two years of study.

关键词： Latent Heat Sensible Heat Energy Partition Wetlands

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Inter Seasonality of the Energy fluxes in Brazilian Savana—Mato Grosso—Brazil

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Atmospheric and Climate Sciences 2014年第2期4卷 219-230页

作者： leone f.a.cisco a.orim curado José de Souza Nogueira Luciana Sanches Thiago Rangel Rodrigues f.a.cisco de Almeida Lobo Marcelo Sacardi Bíudes federal University of Mato Grosso Cuiabá Brazil

Dynamics of flows of matter and energy these biomes are relevant to understanding of environmental processes that govern the biosphere-atmosphere interactions and between ecosystems. This study analyzed inter season and season of energy fluxes in Brazilian Savana through Bowen Ration Method. Results show differences in patterns LE in all season, LE predominant in wet while H in dry. This inversion in patterns of predominant components of the energy balance in wet and dry season because in wet season increase water content in soil and atmosphere due precipitation in this season providing more lost energy for atmosphere in shape LE through soil evaporation and plant transpiration, this results in LE and H in all season of the Brazilian Savana show higher variation in dynamics energy fluxes between surface and atmosphere, as well as energy partition in this biome. Statistics analyses presents than many climate variables influences LE and H in each season indicating complexity in this fluxes. More study is necessary to higher understand patterns energies fluxes in Brazilian Savana.

关键词： Patterns Energies LE H Bowen Ration

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Soil Thermal Diffusivity of a Gleyic Solonetz Soil Estimated by Different Methods in the Brazilian Pantanal

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Open Journal of Soil Science 2013年第1期3卷 15-22页

作者： Victor H. M. Danelichen Marcelo S. Biudes Maísa C. Souza Nadja G. Machado leone f. A. curado José S. Nogueira Postgraduate Program in Environmental Physics Physics Institute Federal University of Mato Grosso (UFMT) Cuiaba Brazil

The soil temperature is an important microclimatic factor due to the interactions between soil and plant, and the energy exchange with the atmosphere. The soil energy exchange is affected by the incident solar radiation, type of coverage and mainly by the soil thermal properties. Among the soil thermal properties, the soil thermal diffusivity is highlighted because it affects the soil temperature profile and soil heat flux transport and distribution. Thus, the aim of this study was to evaluate different estimates of soil thermal diffusivity of a Gleyic Solonetz soil in the Brazilian Pantanal. The soil thermal diffusivity was determined by the amplitude, logarithmic, arctangent and the phase methods between 0.01 and 0.03 m, 0.01 and 0.07 m and 0.01 and 0.15 m depth. The soil thermal diffusivity estimated by the four methods showed significant differences and varied over the study period as a function of volumetric soil water content. The soil thermal diffusivity estimated by logarithmic methodshowed better performance at different depths, followed by the method of phase.

关键词： Water Content Monodominantforest Soil Thermal Properties Soil Temperature Profile

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