气象与环境学报2026，Vol.42Issue(3)：43-53,11.DOI:10.3969/j.issn.1673-503X.2026.03.005
长白山不同海拔高度暖季降水日变化特征分析
Diurnal variation of warm-season precipitation at different altitudes of Changbai Mountain
摘要
Abstract
Based on the hourly precipitation data of the warm season(June-September)at six different altitudes and slopes of the Changbai Mountain from 2015 to 2023,the diurnal variation characteristics of precipitation were analyzed.Results show that the precipitation amount was the highest at the mountaintop,followed by two hillsides,and were higher than those at the bottom station on the same slope.Among the three stations at the bottom of the mountain,the station on the west slope was the highest.The diurnal variations in precipitation amount and frequen-cy at multiple stations exhibited a double peak-valley pattern,with the peaks and sub-peaks occurring in the after-noon to evening and morning,respectively.The precipitation intensities at the two hillsides reached their maximum from afternoon to evening and were higher than those at the mountaintop station.The precipitation amount peaks in the afternoon to evening were mainly caused by the high precipitation frequency in June,and the high precipitation intensity in July,while the morning peak was primarily associated with high precipitation frequency and intensity in August.The difference in precipitation amounts between the mountaintop and the base stations was mainly evident during the early morning hours.In addition,the precipitation amount with a duration of 4-7 hours from morning to afternoon corresponded to a large value area,while precipitation starting in the evening and early morning lasted longer.The precipitation amount at the mountaintop was the highest in both short and medium durations.Among the three bottom stations,the precipitation amounts at the North Slope,West Slope,and South Slope were the most prominent in short duration,medium duration,and long duration,respectively.Short-duration precipitation concen-trated in the afternoon to evening and morning had a high frequency.By contrast,the long-duration precipitation a-mount occupied the largest proportion,which depended on the changes in the position and intensity of the North-east Cold Vortex,the subtropical high,and tropical cyclones.关键词
长白山/梯度观测/暖季降水/日变化特征Key words
Changbai mountain/Gradient observation/Precipitation in the warm season/Diurnal variation分类
天文与地球科学引用本文复制引用
张伶俐,田付友,陈长胜,刘士彬,王扬,姚凯..长白山不同海拔高度暖季降水日变化特征分析[J].气象与环境学报,2026,42(3):43-53,11.基金项目
吉林省科技厅重点研发项目(20240304119SF)、中国气象局智能气象观测技术重点开放实验室开放研究课题(ZNGC2025MS22)和吉林省气象局科研项目(202539)共同资助. （20240304119SF）
