RADIAÇÃO ULTRAVIOLETA, OZÔNIO TOTAL E AEROSSÓIS NA CIDADE DENATAL-RN

Identifier:  imarina:9480995

Handle: https://hdl.handle.net/20.500.11797/imarina9480995

Authors:  Lopo, AB; Spyrides, MHC; Lucio, PS; Sigró, J

Abstract:
The city of Natal is called by its inhabitants Sun City because of its high luminosity, however the capital of Rio Grande do Norte has rates of no melanoma skin cancer above the average of the capitals northeast of Brazil. In this scenario, article presents a study of the variability of Ultraviolet radiation (UV) and UV index for the city of Natal and its association with relevant variables as total ozone, aerosols, cloudiness and global solar radiation (RSG). The methodology conducted a descriptive study with statistical application of Principal Component Analysis (PCA) and Biplot graphic. The data were obtained from the National Institute of Spatial Research/Northeast Regional Center (INPE/CRN), instruments TOMS-OMI/AURA and MODIS/TERRA and National Institute of Meteorology of Brazil. The results indicated that the UV index has an annual mean of 11, rated as extreme by the World Health Organization and that intensity of UVB and UV index in the first half of the year are more intense than in the second. The annual variability of UV has a feature in the months of september and october that consisting of a stabilization/reduction of the UV index in a growth phase of RSG due to higher annual concentration of total ozone. The highest intensity of aerosols during this period contributes to this event. PCA and Biplot graphic contributed to identify the event, because indicated that total ozone and aerosols have a strong negative correlation with the UV index in those months. The authors called event with the abbreviation AES-UV (Annual Spring Event from UV) since it occurs at the beginning and during this season.