Study of ozone and sulfur dioxide using Thailand based Brewer Spectrophotometers

Ozone (O3) and sulfur dioxide (SO2) in a vertical column of the atmosphere in Thailand were obtained from the Brewers#121 and #120. There are similarities between the O3 patterns obtained from the two sites, which are higher in the summer and rainy season compared with winter, although the magnitude of the change in Bangkok is greater than that in Songkhla. SO2 values showed the summer months provide the higher SO2 values in Bangkok, in contrast to Songkhla where the summer months give lower SO2 values.

•The O3 patterns obtained from two different climates in Thailand are similar.•Higher O3 were found in summer and rainy season compared with winter.•The SO2 patterns obtained from two different climates in Thailand are different.•SO2 values showed the summer months provide the higher SO2 values in Bangkok.•SO2 values showed the summer months provide the lower SO2 values in Songkhla.