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| Analysis of climatic characteristics and forecasting of hightemperature weather in Nanchang City |
| Lei Xingyu1,2, Meng Minghua1,2, Long Xiaoyou1,2 |
1. Nanchang Meteorological Bureau,Nanchang 330038;
2. Nanchang National Climate Observatory,Nanchang 330200 |
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Abstract Based on temperature observations from five national meteorological stations in Nanchang from 1963 to 2022,this study analyzes the climatic characteristics of hightemperature weather in the region,revealing a significant increase in hightemperature frequency since the 21st century.The extreme,widespread,and prolonged high temperatures in 2022 were attributed to the synergistic effects of an unusually strong and westwardextended 500 hPa subtropical high(SH) and a strong,eastwardextended 200 hPa South Asia high,which formed a powerful warm highpressure belt in the midtoupper troposphere and induced intense subsidence that facilitated surface warming.Furthermore,utilizing all hightemperature days from 2018 to 2022 as samples,this study established a predictive model and objective forecasting method for temperatures ≥37 ℃ in Nanchang under the influence of SH circulation.
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Received: 09 October 2024
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2026, Vol. 43 
