201. Impacto do aumento de CO2 nas Precipitações do estado de Pernambuco
- Author
-
Josiclêda Domiciano Galvíncio
- Subjects
Atmospheric Science ,Geophysics ,Geography ,Geography, Planning and Development ,Local scale ,Forestry ,Computers in Earth Sciences ,Earth-Surface Processes ,General Environmental Science - Abstract
Procurar mitigar os efeitos das mudancas climaticas exige conhecer a situacao atual e as possiveis consequencias do aumento de CO 2 na atmosfera nas diferentes areas do conhecimento e escalas espaciais. Na escala global os estudos ja estao bastante difundidos. Na escala regional e local esses estudos ainda precisam de avancos. Diante do exposto, este estudo pretende avaliar os impactos do CO2 atmosferico nas precipitacoes do estado de Pernambuco. Foi escolhido cinco municipios do estado, Recife, Garanhuns, Serra Talhada, Belem do Sao Francisco e Petrolina. Esses municipios representam as mesorregioes do estado, que estao relacionadas com as suas caracteristicas climaticas. Foram aplicados varios metodos estatisticos para identificar as relacoes existentes entre as variaveis e quanto forte sao essas relacoes, correlacao e multivariada. Foi utilizado o SUPer-Sistema de Unidades de Respostas Hidrologicas para Pernambuco para discutir os resultados com o balanco de hidrico de bacias de Pernambuco. Os resultados mostram que Pernambuco tera duas condicoes impactantes com o aumento de CO2 atmosferico, Agreste Litoral aumento de precipitacao e Sertao diminuicao de precipitacao. Sendo o Agreste mais forte o impacto. Considerando o SUPer foi possivel perceber que em torno de 60% da precipitacao de Pernambuco e transformada em evapotranspiracao. Sabe-que o aumento de CO2 impacta a evapotranspiracao da planta. Assim, e possivel afirmar que nao somente as alteracoes das precipitacoes serao impactantes nos recursos hidricos como tambem a evapotranspiracao que sao variaveis importantes no ciclo hidrologico das bacias de Pernambuco. Impact of increased CO2 on precipitation in the state of Pernambuco A B S T R A C T Seeking to mitigate the effects of climate change requires knowing the current situation and the possible consequences of the increase in CO2 in the atmosphere in different areas of knowledge and spatial scales. On a global scale, studies are already widespread. At the regional and local scale, these studies still need to be advanced. Given the above, this study aims to assess the impacts of atmospheric CO2 on rainfall in the state of Pernambuco. Five municipalities in the state were chosen, Recife, Garanhuns, Serra Talhada, Belem do Sao Francisco and Petrolina. These municipalities represent the mesoregions of the state, which are related to their climatic characteristics. Several statistical methods were applied to identify the relationships between variables and how strong these relationships are, correlation and multivariate. The SUPER-System of Hydrological Response Units for Pernambuco was used to discuss the results with the water balance of Pernambuco basins. The results show that Pernambuco will have two impacting conditions with an increase in atmospheric CO2, Agreste and Litoral, an increase in precipitation and Sertao, a decrease in precipitation. The strongest impact being the Agreste. Considering the SUPER, it was possible to see that around 60% of Pernambuco's precipitation is transformed into evapotranspiration. It is known that the increase in CO2 impacts plant evapotranspiration. Thus, it is possible to state that not only changes in precipitation will impact water resources, but also evapotranspiration, which are important variables in the hydrological cycle of Pernambuco basins. Keywords: Climate change, water balance, evapotranspiration, SUPer.
- Published
- 2021
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