Use of satellite data for estimation of air pollution by particulate matter in Havana.

Veronica Gutiérrez Quintero, Elieza Menezes Ruiz, Alina Roig Rassi, Marco Andrés Guevara Luna, Luis Carlos Belalcazar

Abstract

Measurements of a particulate material are important in air quality, public health,
epidemiological studies and decision making for short, and long, term measurements. In Cuba, there are no air quality monitoring networks. Only at some points are there air quality stations installed that measure the concentration of PM (Particulate Matter). Satellite measurements serve as an alternative approach to study air quality. The objective of this study is to evaluate the use of satellite data for the measurement of air pollution by particulate matter over Havana. Aerosol optical depth (AOD) recovered by the MODIS sensor from the TERRA and AQUA satellites, and PM2.5 at the surface of the MERRA-2 satellite product were used to compare with surface measurements of PM10 and PM2.5 during a campaign carried out in 2012 at three places in Havana. The linear correlation between the satellite and surface data was determined, as well as the three statisticians to evaluate the correspondence of the values between both samples. The relation of the satellite data with the measurements in situ concludes that: The data of the concentration of PM2.5 in the surface of the MERRA-2 satellite product are not optimal for the estimation of atmospheric contamination by PM2.5, as it behave in an opposite way, the PM10 concentration can be estimated by both MODIS-TERRA and AQUA, although MODIS-AQUA results are more accurate, the correlation of PM10 with MODIS-AQUA (rp=0.60) gave a higher value than TERRA (rp=0.53) and for the estimation of PM2.5, MODIS-TERRA information can be used as the calculated correlation is rp=0.42.

Keywords

PM2.5; PM10; measurements in situ; satellite data; MODIS; TERRA; AQUA; MERRA2.

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