South Asian High Identification and Rainstorm Monitoring Using Fengyun-4-Derived Atmospheric Motion Vectors
Based on atmospheric motion vectors (AMVs) derived from the Fengyun-4 meteorological satellite (FY-4), in this paper, integrated multi-satellite retrievals for GPM precipitation and reanalysis datasets and the vertical distribution characteristics of FY-4 AMVs, their application in the identificatio...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/14/11/1606 |
| _version_ | 1797460266003202048 |
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| author | Suling Ren Danyu Qin Ning Niu Bingyun Yang |
| author_facet | Suling Ren Danyu Qin Ning Niu Bingyun Yang |
| author_sort | Suling Ren |
| collection | DOAJ |
| description | Based on atmospheric motion vectors (AMVs) derived from the Fengyun-4 meteorological satellite (FY-4), in this paper, integrated multi-satellite retrievals for GPM precipitation and reanalysis datasets and the vertical distribution characteristics of FY-4 AMVs, their application in the identification of the South Asian high (SAH) anticyclone and their application in the real-time monitoring of rainstorm disasters are studied. The results show that the AMVs’ vertical distribution characteristics are different across regions and seasons. AMVs from 150 to 350 hPa can be chosen as the upper troposphere wind (the total number accounts for about 77.2% on average). The center and shape of the upper tropospheric anticyclone obtained from AMVs are close to or slightly southward compared with those of the SAH at 200 hPa obtained from the ERA5 geopotential height. The SAH ridge line identified using the upper troposphere AMV zonal wind (the zonal wind is equal to zero) is slightly southward by about 1–2 degrees of latitude from that identified using ERA5 at 200 hPa but with a similar seasonal advance. The upper troposphere AMV can be used to monitor the location of the SAH and the evolution of its ridge line. The abnormally strong precipitation in South China is related to the location of the SAH and its ridge line. When the precipitation is abnormally strong/weak, the upper troposphere AMV deviation airflow shows divergence/convergence. During the “Dragon Boat Water” period in South China in 2022, strong precipitation occurred in the strong westerly winds or divergent flow on the northeast side of the upper troposphere anticyclone obtained from AMVs, and the precipitation intensity was the strongest when the divergence reached its peak, but this is not shown clearly in the EAR5 dataset. |
| first_indexed | 2024-03-09T17:02:41Z |
| format | Article |
| id | doaj.art-976e0c73ce49408cb63f03e433c9b534 |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-03-09T17:02:41Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-976e0c73ce49408cb63f03e433c9b5342023-11-24T14:28:23ZengMDPI AGAtmosphere2073-44332023-10-011411160610.3390/atmos14111606South Asian High Identification and Rainstorm Monitoring Using Fengyun-4-Derived Atmospheric Motion VectorsSuling Ren0Danyu Qin1Ning Niu2Bingyun Yang3National Satellite Meteorological Center, China Meteorological Administration, Beijing 100081, ChinaNational Satellite Meteorological Center, China Meteorological Administration, Beijing 100081, ChinaInnovation Center for Fengyun Meteorological Satellite (FYSIC), Beijing 100081, ChinaNational Satellite Meteorological Center, China Meteorological Administration, Beijing 100081, ChinaBased on atmospheric motion vectors (AMVs) derived from the Fengyun-4 meteorological satellite (FY-4), in this paper, integrated multi-satellite retrievals for GPM precipitation and reanalysis datasets and the vertical distribution characteristics of FY-4 AMVs, their application in the identification of the South Asian high (SAH) anticyclone and their application in the real-time monitoring of rainstorm disasters are studied. The results show that the AMVs’ vertical distribution characteristics are different across regions and seasons. AMVs from 150 to 350 hPa can be chosen as the upper troposphere wind (the total number accounts for about 77.2% on average). The center and shape of the upper tropospheric anticyclone obtained from AMVs are close to or slightly southward compared with those of the SAH at 200 hPa obtained from the ERA5 geopotential height. The SAH ridge line identified using the upper troposphere AMV zonal wind (the zonal wind is equal to zero) is slightly southward by about 1–2 degrees of latitude from that identified using ERA5 at 200 hPa but with a similar seasonal advance. The upper troposphere AMV can be used to monitor the location of the SAH and the evolution of its ridge line. The abnormally strong precipitation in South China is related to the location of the SAH and its ridge line. When the precipitation is abnormally strong/weak, the upper troposphere AMV deviation airflow shows divergence/convergence. During the “Dragon Boat Water” period in South China in 2022, strong precipitation occurred in the strong westerly winds or divergent flow on the northeast side of the upper troposphere anticyclone obtained from AMVs, and the precipitation intensity was the strongest when the divergence reached its peak, but this is not shown clearly in the EAR5 dataset.https://www.mdpi.com/2073-4433/14/11/1606FY-4A/B meteorological satelliteatmospheric motion vectorsSouth Asian highrainstorm |
| spellingShingle | Suling Ren Danyu Qin Ning Niu Bingyun Yang South Asian High Identification and Rainstorm Monitoring Using Fengyun-4-Derived Atmospheric Motion Vectors Atmosphere FY-4A/B meteorological satellite atmospheric motion vectors South Asian high rainstorm |
| title | South Asian High Identification and Rainstorm Monitoring Using Fengyun-4-Derived Atmospheric Motion Vectors |
| title_full | South Asian High Identification and Rainstorm Monitoring Using Fengyun-4-Derived Atmospheric Motion Vectors |
| title_fullStr | South Asian High Identification and Rainstorm Monitoring Using Fengyun-4-Derived Atmospheric Motion Vectors |
| title_full_unstemmed | South Asian High Identification and Rainstorm Monitoring Using Fengyun-4-Derived Atmospheric Motion Vectors |
| title_short | South Asian High Identification and Rainstorm Monitoring Using Fengyun-4-Derived Atmospheric Motion Vectors |
| title_sort | south asian high identification and rainstorm monitoring using fengyun 4 derived atmospheric motion vectors |
| topic | FY-4A/B meteorological satellite atmospheric motion vectors South Asian high rainstorm |
| url | https://www.mdpi.com/2073-4433/14/11/1606 |
| work_keys_str_mv | AT sulingren southasianhighidentificationandrainstormmonitoringusingfengyun4derivedatmosphericmotionvectors AT danyuqin southasianhighidentificationandrainstormmonitoringusingfengyun4derivedatmosphericmotionvectors AT ningniu southasianhighidentificationandrainstormmonitoringusingfengyun4derivedatmosphericmotionvectors AT bingyunyang southasianhighidentificationandrainstormmonitoringusingfengyun4derivedatmosphericmotionvectors |