Energy Balance, CO2 Balance, and Meteorological Aspects of Desertification Hotspots in Northeast Brazil

Silva, Any Caroline; Rêgo Mendes, Keila; Santos e Silva, Cláudio Moisés; Torres Rodrigues, Daniele; Brito Costa, Gabriel; Thainara Corrêa da Silva, Duany; Rodrigues Mutti, Pedro; Rodrigues Ferreira, Rosaria; Guedes Bezerra, Bergson

doi:10.3390/w13212962

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Energy Balance, CO₂ Balance, and Meteorological Aspects of Desertification Hotspots in Northeast Brazil

Any Caroline Silva

^1,*,

Keila Rêgo Mendes

¹,

Cláudio Moisés Santos e Silva

¹,

Daniele Torres Rodrigues

Gabriel Brito Costa

^1,3

Duany Thainara Corrêa da Silva

⁴,

Pedro Rodrigues Mutti

Rosaria Rodrigues Ferreira

and

Bergson Guedes Bezerra

Department of Atmospheric and Climate Sciences, Federal University of Rio Grande do Norte, Natal 59078-970, RN, Brazil

Department of Statistic, Federal University of Piauí, Teresina 64049-550, PI, Brazil

Institute of Biodiversity and Forests, Federal University of Western Pará, Santarém 68035-110, PA, Brazil

⁴

Institute of Engineering and Geosciences, Federal University of Western Pará, Santarém 68035-110, PA, Brazil

Author to whom correspondence should be addressed.

Academic Editor: Luis Garrote

Water 2021, 13(21), 2962; https://doi.org/10.3390/w13212962

Received: 31 August 2021 / Revised: 9 October 2021 / Accepted: 12 October 2021 / Published: 20 October 2021

(This article belongs to the Section Water and Climate Change)

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Abstract

The main objective of this study was to evaluate meteorological variables and the simulated components of energy and CO₂ balances in desertification hotspots in Northeast Brazil. Meteorological data were obtained from the National Institute of Meteorology measurement network for the Cabrobó and Ibimirim sites. Initially, hourly linear trends were calculated for the meteorological variables using the non-parametric Mann–Kendall test. Then, the seasonal variability in the components of energy and CO₂ balances was assessed through simulations of the simple tropical ecosystem (SITE) model. Results showed evidence of increasing air temperature trends in the Cabrobó site in the first months of the year, which was not observed in the Ibimirim site. Regarding relative humidity, increasing trends were observed in a few months over the Cabrobó site, while decreasing trends were observed in the Ibimirim site. Opposite behaviors were also identified for the trends in wind speed in both sites. Gross primary production (GPP) and net ecosystem exchange (NEE) simulated values were higher in the first half of the year in both sites. GPP varied from 0.8 to 1.2 g C m⁻² h⁻¹, and NEE fluctuated around approximately −5 g C m⁻² h⁻¹. These results indicate that rainfall seasonality is a crucial factor for the modulation of CO₂ and energy balance fluxes in the Caatinga biome. View Full-Text

Keywords: microclimate; land degradation; atmosphere–biosphere interaction; modeling

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MDPI and ACS Style

Silva, A.C.; Rêgo Mendes, K.; Santos e Silva, C.M.; Torres Rodrigues, D.; Brito Costa, G.; Thainara Corrêa da Silva, D.; Rodrigues Mutti, P.; Rodrigues Ferreira, R.; Guedes Bezerra, B. Energy Balance, CO₂ Balance, and Meteorological Aspects of Desertification Hotspots in Northeast Brazil. Water 2021, 13, 2962. https://doi.org/10.3390/w13212962

AMA Style

Silva AC, Rêgo Mendes K, Santos e Silva CM, Torres Rodrigues D, Brito Costa G, Thainara Corrêa da Silva D, Rodrigues Mutti P, Rodrigues Ferreira R, Guedes Bezerra B. Energy Balance, CO₂ Balance, and Meteorological Aspects of Desertification Hotspots in Northeast Brazil. Water. 2021; 13(21):2962. https://doi.org/10.3390/w13212962

Chicago/Turabian Style

Silva, Any Caroline, Keila Rêgo Mendes, Cláudio Moisés Santos e Silva, Daniele Torres Rodrigues, Gabriel Brito Costa, Duany Thainara Corrêa da Silva, Pedro Rodrigues Mutti, Rosaria Rodrigues Ferreira, and Bergson Guedes Bezerra. 2021. "Energy Balance, CO₂ Balance, and Meteorological Aspects of Desertification Hotspots in Northeast Brazil" Water 13, no. 21: 2962. https://doi.org/10.3390/w13212962

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Energy Balance, CO₂ Balance, and Meteorological Aspects of Desertification Hotspots in Northeast Brazil

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