西藏日喀则市1979~2023年二十四节气气温变化特征分析

Analysis of the Characteristics of Temperature Variation in 24 Solar Terms from 1979 to 2023 in Xigaze City, Xizang

摘要: 基于日喀则市7个气象站逐日气温资料，对1979~2023年近44a二十四节气的气温变化特征进行详细分析，结果表明：日喀则平均气温呈现出典型的单峰形态，峰值位于小暑节气，立春起至小寒，气温呈持续上升趋势，直至小暑达到顶点后，开始逐步回落，1979~2001年与2002~2023年间，日喀则各节气平均气温的显著变化趋势明显，春季型节气平均气温的增幅尤为明显，夏季型节气的平均气温则相对稳定，小寒节气降至全年最低。惊蛰、清明节气的平均气温距平变化呈现出明显的线性上升趋势，并在2000年发生突变。小满节气的平均气温距平呈现出复杂的波动振荡模式，芒种气温展现出显著的波动特性。

Abstract: Based on the daily temperature data of 7 meteorological stations in Xigaze City, the temperature variation characteristics of 24 solar terms in the past 44 years from 1979 to 2023 are analyzed in detail. The results show that the average temperature in Xigaze presents a typical single-peak pattern, with the peak located in the Minor Heat solar term. From the beginning of spring to Minor Cold, the temperature shows a continuous rising trend until Minor Heat reaches its peak, and then gradually declines. From 1979 to 2001 and from 2002 to 2023, the average temperature of each solar term in Xigaze shows a significant trend of change. The average temperature of the spring solar term increases significantly, while the average temperature of the summer solar term is relatively stable, and the Minor Cold solar term drops to the lowest in the whole year. The average temperature anomaly of Awakening of Insects and Qingming Solar terms showed an obvious linear upward trend, and a sudden change occurred in 2000. The average temperature anomaly of the small Manchurian solar term presents a complex oscillating pattern, and the temperature in grain shows a significant fluctuating characteristic.