Multidecadal variability of dust activity in Gobi desert and its connection with the pacific decadal oscillation
The multidecadal changes of dust column mass density (DCMD) in Gobi desert (GD) in spring are investigated based on the Modern-Era Retrospective analysis for Research and Applications version 2 dataset. In addition, the possible effects of the atmospheric circulation and sea surface temperature (SST...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | Environmental Research Communications |
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| Online Access: | https://doi.org/10.1088/2515-7620/acf9e2 |
| _version_ | 1827807631820980224 |
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| author | Yanfeng Huo Dongping Bai Lin Liu Zizhen Dong Shangpei Xun Binfang He Wenyu Wu Xintong Chen Hongqun Zhang |
| author_facet | Yanfeng Huo Dongping Bai Lin Liu Zizhen Dong Shangpei Xun Binfang He Wenyu Wu Xintong Chen Hongqun Zhang |
| author_sort | Yanfeng Huo |
| collection | DOAJ |
| description | The multidecadal changes of dust column mass density (DCMD) in Gobi desert (GD) in spring are investigated based on the Modern-Era Retrospective analysis for Research and Applications version 2 dataset. In addition, the possible effects of the atmospheric circulation and sea surface temperature (SST) forcing on the multidecadal changes are analyzed. Results show that the dust aerosol over GD experienced a decadal change in 1999 with about 30% higher dust loading during 2000–2013 in comparison to that during 1987–1999. Further analysis indicates that the decadal change of dust aerosol over GD is attributed to the more strengthened northwesterly wind anomaly extending from lower to middle troposphere and the anticyclonic anomaly in middle troposphere over GD during the latter epoch, which is favorable to the increase of local dust activities. Furthermore, the decadal change of DCMD in GD is associated with the switch of Pacific Decadal Oscillation (PDO) phase. From 2000 to 2013, the PDO was in the negative phase, which induced to a positive potential height anomaly and northwesterly wind anomalies in the middle troposphere over GD. The dry and cold air brought by the anomalous northwesterly wind associated with the negative PDO phase reduces the relative humidity in the lower troposphere further amplify the effect of strengthened wind speed, being favorable for the increase of local dust loading and the resultant increase of DCMD there. |
| first_indexed | 2024-03-11T22:00:10Z |
| format | Article |
| id | doaj.art-ec6f3bd3357149d6a8e1477c732975c5 |
| institution | Directory Open Access Journal |
| issn | 2515-7620 |
| language | English |
| last_indexed | 2024-03-11T22:00:10Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research Communications |
| spelling | doaj.art-ec6f3bd3357149d6a8e1477c732975c52023-09-25T12:04:34ZengIOP PublishingEnvironmental Research Communications2515-76202023-01-015909501310.1088/2515-7620/acf9e2Multidecadal variability of dust activity in Gobi desert and its connection with the pacific decadal oscillationYanfeng Huo0Dongping Bai1Lin Liu2https://orcid.org/0000-0001-6632-9392Zizhen Dong3Shangpei Xun4Binfang He5Wenyu Wu6Xintong Chen7Hongqun Zhang8Anhui Institute of Meteorological Sciences , Hefei 230031, People’s Republic of China; Key Laboratory for Atmospheric Sciences & Remote Sensing of Anhui Province, Hefei 230031, People’s Republic of China; Shouxian National Climate Observatory, Huainan 232200, People’s Republic of China; Huaihe River Basin Typical Farmland Ecological Meteorological Field Science Experiment Base of CMA, Huainan 232200, People’s Republic of ChinaInstitute of Atmospheric Composition , and State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, People’s Republic of ChinaInstitute of Atmospheric Composition , and State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, People’s Republic of ChinaSchool of Earth Sciences, Yunnan University , Kunming 650500, People’s Republic of ChinaAnhui Institute of Meteorological Sciences , Hefei 230031, People’s Republic of ChinaAnhui Institute of Meteorological Sciences , Hefei 230031, People’s Republic of ChinaAnhui Institute of Meteorological Sciences , Hefei 230031, People’s Republic of ChinaAnhui Institute of Meteorological Sciences , Hefei 230031, People’s Republic of ChinaAnhui Institute of Meteorological Sciences , Hefei 230031, People’s Republic of ChinaThe multidecadal changes of dust column mass density (DCMD) in Gobi desert (GD) in spring are investigated based on the Modern-Era Retrospective analysis for Research and Applications version 2 dataset. In addition, the possible effects of the atmospheric circulation and sea surface temperature (SST) forcing on the multidecadal changes are analyzed. Results show that the dust aerosol over GD experienced a decadal change in 1999 with about 30% higher dust loading during 2000–2013 in comparison to that during 1987–1999. Further analysis indicates that the decadal change of dust aerosol over GD is attributed to the more strengthened northwesterly wind anomaly extending from lower to middle troposphere and the anticyclonic anomaly in middle troposphere over GD during the latter epoch, which is favorable to the increase of local dust activities. Furthermore, the decadal change of DCMD in GD is associated with the switch of Pacific Decadal Oscillation (PDO) phase. From 2000 to 2013, the PDO was in the negative phase, which induced to a positive potential height anomaly and northwesterly wind anomalies in the middle troposphere over GD. The dry and cold air brought by the anomalous northwesterly wind associated with the negative PDO phase reduces the relative humidity in the lower troposphere further amplify the effect of strengthened wind speed, being favorable for the increase of local dust loading and the resultant increase of DCMD there.https://doi.org/10.1088/2515-7620/acf9e2Gobi desertdust activityPacific Decadal Oscillationdecadal variability |
| spellingShingle | Yanfeng Huo Dongping Bai Lin Liu Zizhen Dong Shangpei Xun Binfang He Wenyu Wu Xintong Chen Hongqun Zhang Multidecadal variability of dust activity in Gobi desert and its connection with the pacific decadal oscillation Environmental Research Communications Gobi desert dust activity Pacific Decadal Oscillation decadal variability |
| title | Multidecadal variability of dust activity in Gobi desert and its connection with the pacific decadal oscillation |
| title_full | Multidecadal variability of dust activity in Gobi desert and its connection with the pacific decadal oscillation |
| title_fullStr | Multidecadal variability of dust activity in Gobi desert and its connection with the pacific decadal oscillation |
| title_full_unstemmed | Multidecadal variability of dust activity in Gobi desert and its connection with the pacific decadal oscillation |
| title_short | Multidecadal variability of dust activity in Gobi desert and its connection with the pacific decadal oscillation |
| title_sort | multidecadal variability of dust activity in gobi desert and its connection with the pacific decadal oscillation |
| topic | Gobi desert dust activity Pacific Decadal Oscillation decadal variability |
| url | https://doi.org/10.1088/2515-7620/acf9e2 |
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