Banca de DEFESA: RONABSON CARDOSO FERNANDES

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE : RONABSON CARDOSO FERNANDES
DATA : 31/08/2017
HORA: 08:00
LOCAL: Auditório do CCET
TÍTULO:

STUDY OF THE INFLUENCE OF COSMIC RAYS IN RAINFALL PRECIPITATION IN THE NORTHERN AND NORTHEASTERN REGION OF BRAZIL

PALAVRAS-CHAVES:

regression, wavelt coherence, polynomial, rainfall

PÁGINAS: 99
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Geociências
RESUMO:

Considering the perspective of increasing extremes of rainfall due to climate change, studying the influence of solar cycle activity and cosmic ray flux on this meteorological variable is of great importance. Rainfall is a preponderant factor for agriculture, the energy sector, livestock and for the economy. With this, it is extremely important to study the relationship between them. Initially, it was necessary to reconstruct several historical series with a percentage of less than 60% of missing data in the historical GCR series, in which the MTSDI method was pointed out as the best model, among those studied, to perform the imputation of observational data Of GCR. Thus, the Huancayo / PER station was chosen to correlate with rainfall in the North and Northeast of Brazil. It was verified that there was statistical coherence by the Wavelet Coherence technique between rainfall with GCR and SSN in the monthly, seasonal, annual, interannual and interdecadal scale. Maximal Overlay Transform (MODWT) showed that there is a significant correlation between the series studied in the scales of 5.3 years, 10.6 years, 22.3 years and 44.6 years. And, finally, a model can be constructed to predict the historical series of rainfall, proving to be satisfactory. Therefore, this research showed that there is influence of GCR flux and solar activity on Brazilian tropical rainfall.

MEMBROS DA BANCA:
Interno - 1858120 - DAVID MENDES
Interno - 348011 - GILVAN LUIZ BORBA
Interno - 1808127 - JOSE HENRIQUE FERNANDEZ
Externo à Instituição - JOSEMIR ARAÚJO NEVES - EMPARN
Presidente - 320597 - PAULO SERGIO LUCIO
Externo à Instituição - ÉVERTON FRIGO - Unipampa