The Madden‐Julian Oscillation Modulates the Air Quality in the Maritime Continent
Abstract Air quality in the Maritime Continent, which worsens particularly during peatland fire periods, causes climate and environmental concerns. The occurrence of peatland fire haze has been related to the interannual variations of the El Niño‐Southern Oscillation, Indian Ocean Dipole, and inter‐...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Geophysical Union (AGU)
2021-07-01
|
| Series: | Earth and Space Science |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2021EA001708 |
| _version_ | 1819138114583527424 |
|---|---|
| author | Mikinori Kuwata Takuma Miyakawa Satoru Yokoi Md Firoz Khan Mohd Talib Latif |
| author_facet | Mikinori Kuwata Takuma Miyakawa Satoru Yokoi Md Firoz Khan Mohd Talib Latif |
| author_sort | Mikinori Kuwata |
| collection | DOAJ |
| description | Abstract Air quality in the Maritime Continent, which worsens particularly during peatland fire periods, causes climate and environmental concerns. The occurrence of peatland fire haze has been related to the interannual variations of the El Niño‐Southern Oscillation, Indian Ocean Dipole, and inter‐seasonal monsoon cycle. However, the factors affecting the region's air quality on subseasonal timescales have not been clearly identified. We investigated the role of the Madden‐Julian Oscillation (MJO), which has a 30–90‐day cycle, in air quality using a long‐term observation data set from Malaysia. The results show that in MJO Phase 3, during which the region is covered by convective clouds, only accounted for 4 ± 2% of high PM10 concentration days (daily average PM10 concentration at site X > average + standard deviation of daily average PM10 concentration at site X) among all active MJO periods. In contrast, the corresponding values were considerably higher in MJO Phases 1 and 5–8. The MJO also modulated CO and ozone concentrations. This study shows that the MJO influences air quality during both fire and non‐fire seasons, demonstrating that variations in wildfire activity are not the only cause of air quality changes. Other factors, such as precipitation, also need to be considered to better understand the relationship between the MJO and air quality. |
| first_indexed | 2024-12-22T11:01:37Z |
| format | Article |
| id | doaj.art-960a6e32d4c74c4fa92b29061869cffb |
| institution | Directory Open Access Journal |
| issn | 2333-5084 |
| language | English |
| last_indexed | 2024-12-22T11:01:37Z |
| publishDate | 2021-07-01 |
| publisher | American Geophysical Union (AGU) |
| record_format | Article |
| series | Earth and Space Science |
| spelling | doaj.art-960a6e32d4c74c4fa92b29061869cffb2022-12-21T18:28:29ZengAmerican Geophysical Union (AGU)Earth and Space Science2333-50842021-07-0187n/an/a10.1029/2021EA001708The Madden‐Julian Oscillation Modulates the Air Quality in the Maritime ContinentMikinori Kuwata0Takuma Miyakawa1Satoru Yokoi2Md Firoz Khan3Mohd Talib Latif4Department of Atmospheric and Oceanic Science School of Physics Peking University Beijing ChinaResearch Institute for Global Change Japan Agency for Marine‐Earth Science and Technology Yokohama JapanResearch Institute for Global Change Japan Agency for Marine‐Earth Science and Technology Yokohama JapanDepartment of Chemistry Faculty of Science University of Malaya Kuala Lumpur MalaysiaSchool of Environmental and Natural Resource Sciences Faculty of Science and Technology Universiti Kebangsaan Malaysia Bangi Selangor MalaysiaAbstract Air quality in the Maritime Continent, which worsens particularly during peatland fire periods, causes climate and environmental concerns. The occurrence of peatland fire haze has been related to the interannual variations of the El Niño‐Southern Oscillation, Indian Ocean Dipole, and inter‐seasonal monsoon cycle. However, the factors affecting the region's air quality on subseasonal timescales have not been clearly identified. We investigated the role of the Madden‐Julian Oscillation (MJO), which has a 30–90‐day cycle, in air quality using a long‐term observation data set from Malaysia. The results show that in MJO Phase 3, during which the region is covered by convective clouds, only accounted for 4 ± 2% of high PM10 concentration days (daily average PM10 concentration at site X > average + standard deviation of daily average PM10 concentration at site X) among all active MJO periods. In contrast, the corresponding values were considerably higher in MJO Phases 1 and 5–8. The MJO also modulated CO and ozone concentrations. This study shows that the MJO influences air quality during both fire and non‐fire seasons, demonstrating that variations in wildfire activity are not the only cause of air quality changes. Other factors, such as precipitation, also need to be considered to better understand the relationship between the MJO and air quality.https://doi.org/10.1029/2021EA001708Madden‐Julian Oscillationparticulate mattercarbon monoxideozone |
| spellingShingle | Mikinori Kuwata Takuma Miyakawa Satoru Yokoi Md Firoz Khan Mohd Talib Latif The Madden‐Julian Oscillation Modulates the Air Quality in the Maritime Continent Earth and Space Science Madden‐Julian Oscillation particulate matter carbon monoxide ozone |
| title | The Madden‐Julian Oscillation Modulates the Air Quality in the Maritime Continent |
| title_full | The Madden‐Julian Oscillation Modulates the Air Quality in the Maritime Continent |
| title_fullStr | The Madden‐Julian Oscillation Modulates the Air Quality in the Maritime Continent |
| title_full_unstemmed | The Madden‐Julian Oscillation Modulates the Air Quality in the Maritime Continent |
| title_short | The Madden‐Julian Oscillation Modulates the Air Quality in the Maritime Continent |
| title_sort | madden julian oscillation modulates the air quality in the maritime continent |
| topic | Madden‐Julian Oscillation particulate matter carbon monoxide ozone |
| url | https://doi.org/10.1029/2021EA001708 |
| work_keys_str_mv | AT mikinorikuwata themaddenjulianoscillationmodulatestheairqualityinthemaritimecontinent AT takumamiyakawa themaddenjulianoscillationmodulatestheairqualityinthemaritimecontinent AT satoruyokoi themaddenjulianoscillationmodulatestheairqualityinthemaritimecontinent AT mdfirozkhan themaddenjulianoscillationmodulatestheairqualityinthemaritimecontinent AT mohdtaliblatif themaddenjulianoscillationmodulatestheairqualityinthemaritimecontinent AT mikinorikuwata maddenjulianoscillationmodulatestheairqualityinthemaritimecontinent AT takumamiyakawa maddenjulianoscillationmodulatestheairqualityinthemaritimecontinent AT satoruyokoi maddenjulianoscillationmodulatestheairqualityinthemaritimecontinent AT mdfirozkhan maddenjulianoscillationmodulatestheairqualityinthemaritimecontinent AT mohdtaliblatif maddenjulianoscillationmodulatestheairqualityinthemaritimecontinent |