Carbon monoxide (CO) and formaldehyde (CH2O) are air pollutants playing an important role
in the formation of tropospheric ozone (O3), which in turn have an influence on climate change.
This study investigated the levels of CO and CH2O in Thailand during the periods of 2007 to 2017
(11 years). The observed data of CO were collected from the MOPITT satellite. For CH2O, the
observed data were collected from the OMI satellite. Overall, during the study period, CO were
detected at high levels from October to April and at low levels from May to September. For CH2O,
the higher levels were detected from February to May while the lower levels were detected from
June to September. Moreover, ground monitoring data of CO and CH2O were also obtained from
the Pollution Control Department (PCD) from all over Thailand to compare with the satellite
observed data. The results showed well correlated between satellite and ground CO levels in term
of monthly pattern. However, the correlation between satellite and ground CH2O was relatively
low. The results in this study showed that satellite observations of CO are useful to support ground
measurements, particularly when ground monitoring stations are limited.
Keywords
CO; CH2O; Satellites; MOPITT; OMI; Thailand
ENIVRONMENT ASIA
Published by : Thai Society of Higher Education Institutes on Environment Contributions welcome at : http://www.tshe.org/en/
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