Balanço Hídrico Climatológico, em Decorrência do Aquecimento Global, no Município de Picuí - Semiárido Paraibano (Climatic Water Balance, as a Result of Global Warming, in the City of Picuí - Paraíba Semiarid)
DOI:
https://doi.org/10.26848/rbgf.v5i1.232757Keywords:
Mudanças climáticas, Disponibilidade Hídrica, Chuva, TemperaturaAbstract
O objetivo deste trabalho foi avaliar o comportamento das condições hídricas em decorrência do aquecimento global, analisando a disponibilidade hídrica futura do município de Picuí. Para averiguar o comportamento hídrico efetuou-se o cálculo do Balanço Hídrico Climatológico segundo o método de Thornthwaite e Mather utilizando-se da série de precipitação dos anos de 1910 a 2005, coletado pela SUDENE e pela EMATER-PB e de dados de temperatura estimados pelo software Estima-T. Os resultados foram aplicados para as condições médias e em seguida usou-se os cenários de precipitação mensal (descimento de 10,0% e 20,0%) e de temperatura (acréscimo de 1,0ºC e 4,0ºC) do IV Relatório de Avaliação do Painel Intergovernamental de Mudanças Climáticas (IPCC AR4), para os cenários extremos de emissão de CO2, otimista e pessimista, concomitantemente. Observou-se através do balanço hídrico que em condições médias ocorre deficiência hídrica em todos os meses para os casos do balanço hídrico climatológico e para as simulações de reduções de 10 e 20%. Os resultados obtidos tanto para o cenário otimista, quanto o pessimista, indicam situação crítica das condições do solo tanto nos recursos hídricos quanto para a prática de culturas de sequeiro. Os índices pluviométricos não serão suficientes para vários tipos de culturas, analisando pela vertente do cenário pessimista. Que a condição para o armazenamento de água das chuvas fica crítica para o consumo humano e animal.
Palavras-chave: Mudanças climáticas; Disponibilidade Hídrica; Chuva; Temperatura.
Climatic Water Balance, as a Result of Global Warming, in the City of Picuí - Paraíba Semiarid
ABSTRACT
The objective of this study was to evaluate the behavior of water conditions due to global warming, analyzing the future water availability in the city of Picuí. To investigate the water behavior is made in calculating the climatic water balance according to Thornthwaite & Mather method using a series of precipitation from year 1910 to 2005, collected by SUDENE and EMATER-PB and temperature data estimated by Estimated-T software. The results were used for conditions in medium and then used to precipitation of the sets (decrease of 10.0% and 20.0%) and temperature (increased by 1.0 ° C and 4.0 ° C) fourth Report the Intergovernmental Panel on Climate Change (IPCC AR4), extreme scenarios for CO2 emissions, optimistic and pessimistic at the same time. It was observed through the water balance that under average water deficiency occurs in all months for cases and the climatic water balance simulations for reductions of 10 and 20%. The results for both the optimistic scenario, the pessimistic, indicating the critical situation of soil conditions in both water resources and for the practice of rainfed crops. The rainfall will not be sufficient for many types of cultures, analyzing the slope of the pessimistic scenario. That the condition for the storage of rainwater is critical for human and animal consumption.
Keywords: Climate change. Water availability. Rainfall. Temperature.
Downloads
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2012 Raimundo Mainar Medeiros, Paulo Paulo Roberto Megna Francisco, Maria Marle Bandeira
This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with Revista Brasileira de Geografia Física agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under the Creative Commons Attribution 4.0 International (CC BY 4.0) license that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
Authors are permitted to make their work available online before or during the editorial process, on academic social networks, digital repositories, or preprint servers. After publication in Revista Brasileira de Geografia Física, authors are expected to update the preprint or postprint versions on the platforms where they were originally made available, providing a link to the final published version and any other relevant information, with proper recognition of authorship and the initial publication in this journal.
You are free to:
Share — copy and redistribute the material in any medium or format for any purpose, even commercially.
Adapt — remix, transform, and build upon the material for any purpose, even commercially.
The licensor cannot revoke these freedoms as long as you follow the license terms.
Under the following terms:
Attribution — You must give appropriate credit , provide a link to the license, and indicate if changes were made . You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
