Abstract
In this study, we use the moisture budget equation and the three-pattern decomposition of global atmospheric circulation to analyze the extreme precipitation in Henan Province that occurred from 17 to 22 July 2021. The results obtained from the moisture budget equation show that the dynamic and thermodynamic terms can explain 75% and 22% of the anomalous precipitation, respectively, while the residual term only explains 3%. Changes in divergence (advection) are the main contributor to the dynamic (thermodynamic) term, which can explain 80% (22%) of the anomalous precipitation. Further analysis based on the novel moisture budget equation shows that the contributions of the horizontal, meridional, and zonal circulations to the anomalous precipitation caused by the dynamic term induced by divergence and thermodynamic term induced by advection are 13%, 13%, and 76%, respectively, suggesting the dominant role of zonal circulation in causing this anomalous precipitation. The underlying physical mechanism of horizontal, meridional, and zonal circulations in causing this anomalous precipitation was also studied.
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Data availability
The hourly rainfall data and atmospheric variables from ERA5 data were available at https://cds.climate.copernicus.eu/cdsapp#!/search?text=ERA5&type=-dataset.
Code availability
The code analyzed during the current study are available from the corresponding author on reasonable request.
References
Cheng J, Gao C, Hu S, Feng G (2018) High-stability algorithm for the three-pattern decomposition of global atmospheric circulation. Theor Appl Climatol 133:851–866. https://doi.org/10.1007/s00704-017-2226-2
Han Z, Su T, Zhang Q, Wen Q, Feng G (2019a) Thermodynamic and dynamic effects of increased moisture sources over the Tropical Indian Ocean in recent decades. Clim Dyn 53:7081–7096. https://doi.org/10.1007/s00382-019-04977-w
Han Z, Su T, Huang B, Feng T, Qu S, Feng G (2019b) Changes in global monsoon precipitation and the related dynamic and thermodynamic mechanisms in recent decades. Int J Climatol 39:1490–1503. https://doi.org/10.1002/joc.5896
Han Z, Zhang Q, Wen Q, Lu Z, Feng G, Su T, Li Q, Zhang Q (2020) The changes in ENSO-induced tropical Pacific precipitation variability in the past warm and cold climates from the EC-Earth simulations. Clim Dyn 55:503–519. https://doi.org/10.1007/s00382-020-05280-9
Han Z, Zhang Q, Li Q, Feng R, Haywood AM, Tindall JC et al (2021) Evaluating the large-scale hydrological cycle response within the Pliocene Model Intercomparison Project Phase 2 (PlioMIP2) ensemble. Clim past 17:2537–2558. https://doi.org/10.5194/cp-17-2537-2021
Hersbach H, Bell B, Berrisford P, Hirahara S, Horányi A, Muñoz-Sabater J et al (2020) The ERA5 global reanalysis. Q J Roy Meteor Soc 146:1999–2049. https://doi.org/10.1002/qj.3803
Hu S, Cheng J, Chou J (2017) Novel three-pattern decomposition of global atmospheric circulation: generalization of traditional two dimensional decomposition. Clim Dyn 49:3573–3586. https://doi.org/10.1007/s00382-017-3530-3
Hu S, Chou J, Cheng J (2018a) Three-pattern decomposition of global atmospheric circulation: part I—decomposition model and theorems. Clim Dyn 50:2355–2368. https://doi.org/10.1007/s00382-015-2818-4
Hu S, Cheng J, Xu M, Chou J (2018b) Three-pattern decomposition of global atmospheric circulation: part II—dynamical equations of horizontal, meridional and zonal circulations. Clim Dyn 50:2673–2686. https://doi.org/10.1007/s00382-017-3763-1
Hu S, Zhou B, Gao C, Xu Z, Chou J (2020) Theory of three-pattern decomposition of global atmospheric circulation. Sci China Earth Sci 63:1248–1267. https://doi.org/10.1007/s11430-019-9614-y
Liu H, Hu S, Xu M, Chou J (2008) Three-dimensional decomposition method of global atmospheric circulation. Sci China Ser D 51:386–402. https://doi.org/10.1007/s11430-008-0020-9
Qiao S, Chen D, Wang B, Cheung HN, Liu F, Cheng J, Tang S, Zhang Z, Feng G, Dong W (2021) The longest 2020 Meiyu season over the past 60 years: subseasonal perspective and its predictions. Geophys Res Lett 48:e2021GL093596. https://doi.org/10.1029/2021GL093596
Seager R, Naik N, Vecchi GA (2010) Thermodynamic and dynamic mechanisms for large-scale changes in the hydrological cycle in response to global warming. J Clim 23:4651–4668. https://doi.org/10.1175/2010JCLI3655.1
Seager R, Vecchi GA (2010) Greenhouse warming and the 21st century hydroclimate of southwestern North America. Proc Natl Acad Sci USA 107:21277–21282. https://doi.org/10.1073/pnas.0910856107
Shi W, Li X, Zeng M, Zhang B, Wang H, Zhu K, Zhu X (2021) Multi-model comparison and high-resolution regional model forecast analysis for the “7·20” Zhengzhou severe heavy rain. Transactions of Atmospheric Sciences 44: 688–702. https://doi.org/10.13878/j.cnki.dqkxxb.20210823001 (in Chinese)
Sun Y, Xiao H, Yang H, Ding J, Fu D, Guo X, Feng L (2021) Feature analysis of dynamic condition and hydrometeor transportation among Zhengzhou “7·20” superheavy rainfall event based on optical flow field of remote sensing data. Chin J Atmos Sci 45:1384–1399. https://doi.org/10.3878/j.issn.1006-9895.2109.21155 ((inChinese))
Yin J, Gu H, Liang X, Yu M, Sun J, Xie Y, Li F, Wu C (2021) A possible dynamic mechanism for rapid production of the extreme hourly rainfall in Zhengzhou city on 20 July 2021. J Meteorol Res. https://doi.org/10.1007/s13351-022-1166-7
Zhang X, Yang H, Wang X, Shen L, Wang D, Li H (2021) Analysis on characteristic and abnormality of atmospheric circulations of the July 2021 extreme precipitation in Henan. Trans Atmos Sci 44:672–687. https://doi.org/10.13878/j.cnki.dqkxxb.20210907001 ((in Chinese))
Funding
This work was funded by the National Natural Science Foundation of China (42130610, 42005012, 41975088), the Natural Science Foundation of Jiangsu Province (BK20201058), the National Key Research and Development Program of China (2017YFC1502303), and the School-level research projects of Yancheng Institute of Technology (xjr2020022).
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All authors contributed to the study conception and design. JC performed the analysis and wrote the manuscript. YZ performed the analysis. RZ revised the manuscript. GF provided guidance and revised the manuscript.
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Cheng, J., Zhao, Y., Zhi, R. et al. Analysis of the July 2021 extreme precipitation in Henan using the novel moisture budget equation. Theor Appl Climatol 149, 15–24 (2022). https://doi.org/10.1007/s00704-022-04022-7
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DOI: https://doi.org/10.1007/s00704-022-04022-7