Abstract
Matter and energy flux dynamics of wetlands are important to understand environmental processes that govern biosphere-atmosphere interactions across ecosystems. This study presents analyses about hourly interaction between wind speed and energy fluxes in Brazilian Wetlands - Mato Grosso - Brazil. This study was conducted in Private Reserve of Natural Heritage (PRNH SESC, 16º39'50''S; 56º47'50''W) in Brazilian Wetland. According to Curado et al. (2012), the wet season occurs between the months of January and April, while the June to September time period is the dry season. Results presented same patterns in energies fluxes in all period studied. Wind speed and air temperature presented same patterns, while LE was relative humidity presented inverse patterns of the air temperature. LE was predominant in all seasons and the sum of LE and H was above 90% of net radiation. Analyses of linear regression presented positive interactions between wind speed and LE, and wind speed and H in all seasons, except in dry season of 2010. Confidence coefficient regression analyses present statistical significance in all wet and dry seasons, except dry season of 2010, suggest that LE and H had interaction with other micrometeorological variables.
Highlights
The purpose of this study is to evaluate the hourly interaction between wind speed and energy fluxes in Brazilian Wetlands – Mato Grosso – Brazil
According to Curado et al (2012), the wet season occurs between the months of January and April, while the June to September time period is the dry season between the years 2007-2010
Note that in all periods studied coefficients a and b present statistical significance according to confidence interval, indicating that linear regressions presented are reliable and can be used in interactions studies about wind speed, latent heat (LE) and H. These results suggest there was a linear interaction between wind speed and LE, wind speed and H in wet and dry seasons in Brazilian Pantanal
Summary
The state of Mato Grosso contains three of main biomes of South America: the Amazon rainforest, the Cerrado (or savanna) and the Pantanal wetland (Rodrigues et al 2013, 2014) The last two biomes have gained attention from researchers studyingThe Pantanal is a complex ecological mosaic that contains large areas of woody vegetation that are subject to periodic inundation, including areas of invasive trees dominated by Vochysia divergens (Vochysiaceae), Scheelea phalerata (Arecaceae), Anadenanthera macrocarpa and Astronium urundeuva (Anacardiaceae), Bromelia sp. (Bromeliaceae), Guadua sp. (Taboca/Poaceae), Attalea phalerata, Copernicia alba, Combretum laxum, and Byrsonima orbignyana (Haase and Haase 1995, Damasceno-Júnior et al 2005, Junk et al 2006).Climate and vegetation strongly influence the water cycle from local to regional scales. The quantification of latent heat (LE) and sensible heat (H) by the Bowen ratio method have been widely used in the last decade, mainly for determining the energy balance for studies on energy dynamics of forest and management availability of water for certain crops by ET (Alves and Pereira 2000, Hayashi et al 2002, Chen et al 2009, Giambelluca et al 2009, Rodrigues et al 2013). The energy balance is based on the principle of conservation of energy and relate energy flow densities available in the vegetation (net radiation) to energy use, especially in the evaporation LE and H with noted variations of air temperature and soil (Pereira et al 2002, Rodrigues et al 2014). Micrometeorological methods can quantify these flows and assess the transformation of radiant energy into LE and H, representing the accounts of these interactions
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