author = "Al{\'e}ssio, Daniela Ramos Lopes and Frassoni, Ariane",
          affiliation = "{Universidade de S{\~a}o Paulo (USP)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Aerosol optical depth analysis and it's relation with 
                         precipitacion patterns during the summertime of 2013-2015 in the 
                         s{\~a}o paulo metropolitan area",
                 year = "2016",
         organization = "Semin{\'a}rio de Inicia{\c{c}}{\~a}o Cient{\'{\i}}fica e 
                         Inicia{\c{c}}{\~a}o em Desenvolvimento Tecnol{\'o}gico e 
                         Inova{\c{c}}{\~a}o (SICINPE)",
                 note = "{Bolsa PIBIC/INPE/CNPq}",
             abstract = "Between 2013 until 2015, Brazil's southeast region has been 
                         affected by a strong drought event, generating disorders to the 
                         population, mainly regarding to water supply at S{\~a}o Paulo 
                         Metropolitan Area (SPMA). This research has the objective to 
                         analyze the precipitation pattern observed at SPMA and to identify 
                         possible relations with air pollution. We have used the aerosol 
                         optical depth (AOD) data at SPMA during the summertime of 2013 to 
                         2015 from AERONET and MODIS satellites. Trough the mean values of 
                         AOD from MODIS between the years 2013 to 2015, it has been 
                         observed higher AOD during August, September and October, with the 
                         values of 0,11 (8% above average), 0,16 (55,44% above average) and 
                         0,16 (55,44% above average), respectively. Comparing AOD from 2014 
                         with the mean AOD from 2000 to 2015, there has been an increase of 
                         27,76% in AOD in October. Also, higher AOD was observed during 
                         2014, with maximum between August and October. Though it is usual 
                         the occurrence of maximum AOD during the winter (April to 
                         September), usually it is not common during October. This month is 
                         characterized by the onset of the rainy season in the Central 
                         Region of Brazil, and the AOD starts to decrease. Furthermore, it 
                         was observed precipitation deficits in 2014, with strong 
                         deviations from the long term mean associated with the persistent 
                         drought since end 2013 to early 2015. In 2014, the total annual 
                         precipitation observed at the official raingauge at S{\~a}o Paulo 
                         city was 1253,3 mm, with a negative anomaly of 187,8 mm. In 
                         October, the anomaly was -101,7 mm. Preliminary analysis suggest 
                         AOD at SPMA is associated with precipitation patterns, possibly 
                         associated with the reduction of the wet deposition. However, it 
                         is not known if the decrease of precipitation is the cause or 
                         consequence of the drought.",
  conference-location = "S{\~a}o Jos{\'e} dos Campos, SP",
      conference-year = "25-26 jul.",
             language = "en",
           targetfile = "Alessio_aeorosol.pdf",
        urlaccessdate = "23 nov. 2020"