Observed atmospheric total column ozone distribution from SCIAMACHY over Peninsular Malaysia

Chooi, T K; San, Lim Hwee; Jafri, Mohd Zubir Mat

doi:10.1088/1755-1315/18/1/012083

Cited by 3 publications

(3 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The concentrations of PM 10 also showed clear fluctuations with high concentrations during HPE than those during non-HPE in all the urban sites. This finding can be attributed to the HPE that is associated with the incremental particulate matters in urban areas that originate from biomass burning (Abas et al 2004;Chow et al 1992), fossil fuel combustion (Afroz et al 2003) and industrial activities (Rahman et al 2015;Dominick et al 2012;Karar et al 2006;Afroz et al 2003). The concentrations of NO 2 and NO also show clear fluctuations in all locations.…”

Section: Comparison Of Pollutants In Different Urban Locationsmentioning

confidence: 92%

“…Ozone in the lower part of the atmosphere (troposphere) is regarded the most widespread source of global air pollution. Chooi et al (2014) reported that ozone in the earth atmosphere is the major absorber of infrared radiation and contributes approximately 3-7% of greenhouse gas. Awang et al (2015) reported that ground-level ozone (O 3 ) is a secondary air pollutant resulting from high anthropogenic activities.…”

Section: Introductionmentioning

confidence: 99%

“…Awang et al (2015) reported that ground-level ozone (O 3 ) is a secondary air pollutant resulting from high anthropogenic activities. Ground-level ozone is classified as a secondary air pollutant (Chooi et al 2014;Awang et al 2000) that contributes to the atmospheric heating of the troposphere; incidentally, it is not included in the list of emission inventories (Abdul-Wahab et al 2005).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Transformational characteristics of ground-level ozone during high particulate events in urban area of Malaysia

Awang

Ramli

Shith

et al. 2018

Air Qual Atmos Health

View full text Add to dashboard Cite

Observations of ground-level ozone (O 3), nitric oxide (NO), nitrogen dioxide (NO 2), particulate matter (PM 10) and meteorological parameter (temperature, relative humidity and wind speed) fluctuations during high particulate event (HPE) and non-HPE in Malaysia have been conducted for 2 years (2013 and 2014). The study focuses on urban areas, namely, Shah Alam, Petaling Jaya and Bandaraya Melaka. The diurnal variations of ground-level O 3 concentration were higher during HPE than those during non-HPE in all urban areas. The concentration of O 3 fluctuated more in 2014 than 2013 due to the higher incidences of HPE. Temperature and wind speed fluctuated with higher PM 10 , NO 2 and NO concentrations during HPE than those during non-HPE in all urban sites. Relative humidity was lower during HPE than that during non-HPE. Positive correlations were found between PM 10 and ozone during HPE for Shah Alam and Petaling Jaya with 0.81 and 0.79, respectively. Meanwhile, negative correlation (− 0.76) was recorded for Bandaraya Melaka. The non-HPE correlation of PM 10 and O 3 showed negative values for all locations except Petaling Jaya (0.02). Temperature and wind speed shows a strong positive correlation with ozone for all locations during HPE and non-HPE with the highest at Shah Alam (0.97). Inverse relationships were found between relative humidity and O 3 , in which the highest was for Shah Alam (− 0.96) in 2013 and Shah Alam (− 0.97) and Bandaraya Melaka (− 0.97) in 2014. The result of the ozone best-fit equation obtained an R 2 of 0.6730. The study parameters had a significant positive relationship with the ozone predictions during HPE.

show abstract

Section: Comparison Of Pollutants In Different Urban Locationsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Transformational characteristics of ground-level ozone during high particulate events in urban area of Malaysia

Awang

Ramli

Shith

et al. 2018

Air Qual Atmos Health

View full text Add to dashboard Cite

show abstract

Variation of ground level ozone concentrations and total column ozone concentrations over Klang Valley

Azmi,

Awang,

Nazir

et al. 2022

INTERNATIONAL CONFERENCE ON BIOENGINEERING AND TECHNOLOGY (IConBET2021)

View full text Add to dashboard Cite

Comparative study of variation of ground level ozone concentrations and total column ozone concentrations over Klang Valley

Azmi

Awang

Yaacob

2021

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Ozone is a gas that plays important role in balancing the Earth’s atmosphere thermal and chemical. Ozone is capable of absorbing the harmful sun’s ultraviolet (UV) radiation. The stratospheric ozone has protecting humans and the ecosystems on Earth from solar radiation. However, ground level ozone (GLO) has been related to secondary pollutants and greenhouse gases that give adverse impacts on human health and crop yield. Hence, determining ozone concentration measurement is important for air quality status for the environmental and public health warnings. Variations of ground level ozone (GLO) and total column ozone (TCO) concentrations over Klang Valley, Malaysia in 2014 and 2015 were determined in this study. The GLO measurement data was acquired from Department of Environment (DOE) Malaysia and is measured using standard method instrument, UV Absorption Ozone Analyzer Model 400A while, TCO measurement using Ozone Monitoring Instrument (OMI). The analysis suggests that GLO concentrations in all four stations in Klang Valley exceeded the Malaysia Ambient Air Quality Standard (NMAAQS) 2020 prescribed limit of 90 ppb per hour. In both 2014 and 2015, TCO concentration observed higher from May to August with the highest concentration of 290 DU and lowest from November to February with the lowest concentration of 230 DU, suggesting that there is seasonal fluctuation caused by Northeast Monsoon (NEM) and Southwest Monsoon (SWM). This is due to environmental factors during SWM that favour a rise in TCO concentration, such as low precipitation, low relative humidity, high temperature, and prolonged sunshine hours. On the other hand, NEM results in lower TCO concentration due to high precipitation, high relative humidity, cold temperature, and short sunshine hours. Meanwhile, GLO peaks are usually seen towards the end of March through April and in October, according to GLO trend research (40 to 50 ppb). This is during the transitional monsoon season, where the west part of Peninsular Malaysia received precipitation lower than usual.

show abstract

Observed atmospheric total column ozone distribution from SCIAMACHY over Peninsular Malaysia

Cited by 3 publications

References 11 publications

Transformational characteristics of ground-level ozone during high particulate events in urban area of Malaysia

Transformational characteristics of ground-level ozone during high particulate events in urban area of Malaysia

Variation of ground level ozone concentrations and total column ozone concentrations over Klang Valley

Comparative study of variation of ground level ozone concentrations and total column ozone concentrations over Klang Valley

Contact Info

Product

Resources

About