Role of deep convection on the spatial asymmetry of the UTLS aerosols in the Asian summer monsoon anticyclone region

Kumar, A. Hemanth; Ratnam, M. Venkat; Subrahmanyam, Kandula V.; Prasad, P. Durga

doi:10.1016/j.apr.2023.101764

Cited by 3 publications

(1 citation statement)

References 62 publications

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“…The summertime circulation over the TP and RM is shown in Figure 4. The anticyclone circulation, especially over the TP, has been reported to be conducive to ozone valley formation through its divergence of the ozone flux (Hemanth Kumar et al, 2023). It is noticed that the minimum ozone does not overlap with the SAH high center over TP, and the ozone valley center is located farther north of the anticyclonic circulation, where the westerly jet exists.…”

Section: Correspondence Of Low Ozone Content and Local Anticyclonementioning

confidence: 99%

Comparison of the Climatic Characteristics of Ozone Valley Over the Tibetan Plateau and the Rocky Mountains

Shen,

Rao,

Guo

et al. 2024

Earth and Space Science

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This study compares the ozone valleys over the Tibetan Plateau (TP) and the Rocky Mountains (RM) using the ERA5 reanalysis data set. The dynamical transport of the ozone over these two regions is analyzed using the Lorenz circulation decomposition method. The ozone content valley over TP is observed around 200–50 hPa (upper troposphere and lower stratosphere, or UTLS), and that over RM is around 300–100 hPa. It is shown that the TP ozone content is smaller than that over RM. By analyzing the spatiotemporal distribution of the ozone content and the general circulation, the anticyclone over Southern Asian (SAH) plays a significant role in existence of the TP ozone valley, and the ozone content flux reaches its maximum in July. Large‐scale terrain and related general circulation determine the ozone valley appearance. Further analysis suggests that stationary transport has a larger impact on the ozone valley formation than the transient transport. The transport by the zonal circulation nearly cancels out most of that by the meridional circulation, due to the fact that the zonal transport magnitude is nearly equal to the meridional transport. The transport center over the RM is much weaker than that over the TP. Furthermore, the contrasts between transient and stationary transports are less evident over RM than over TP. The eddy‐driven stationary ozone transport flux significantly impacts the development of the two low ozone centers across these large terrains.

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Section: Correspondence Of Low Ozone Content and Local Anticyclonementioning

confidence: 99%

Comparison of the Climatic Characteristics of Ozone Valley Over the Tibetan Plateau and the Rocky Mountains

Shen,

Rao,

Guo

et al. 2024

Earth and Space Science

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Investigating the convective transport possibilities of lower-atmospheric pollutants to the UTLS region using rainwater and aerosol chemical characterization

Jain,

Saheb,

Talukdar

et al. 2024

Atmospheric Pollution Research

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Impact of ENSO on the UTLS chemical composition in the Asian Summer Monsoon Anticyclone

Alladi,

Satheesh Chandran,

2024

Atmospheric Research

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Role of deep convection on the spatial asymmetry of the UTLS aerosols in the Asian summer monsoon anticyclone region

Cited by 3 publications

References 62 publications

Comparison of the Climatic Characteristics of Ozone Valley Over the Tibetan Plateau and the Rocky Mountains

Comparison of the Climatic Characteristics of Ozone Valley Over the Tibetan Plateau and the Rocky Mountains

Investigating the convective transport possibilities of lower-atmospheric pollutants to the UTLS region using rainwater and aerosol chemical characterization

Impact of ENSO on the UTLS chemical composition in the Asian Summer Monsoon Anticyclone

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