| 加密探空观测的九龙站低层大气特征分析 |
| |
| 引用本文： | 卢萍,李英.加密探空观测的九龙站低层大气特征分析[J].高原山地气象研究,2015,35(4):53-62. |
| |
| 作者姓名： | 卢萍 李英 |
| |
| 作者单位： | 中国气象局成都高原气象研究所/高原与盆地暴雨旱涝灾害四川省重点实验室, 成都 610072 |
| |
| 基金项目： | 成都高原气象研究所开放实验室基金项目(BROP201512)国家自然科学基金青年科学基金项目(41405145)公益性行业(气象)科研专项经费项目(GYHY201206039)国家自然科学基金面上项目(41275051) |
| |
| 摘 要： | 本文基于多年连续观测所得的九龙站加密探空资料,通过对比分析,认识到该站的边界层大气在夏季呈现以下特征:大气温度/湿度随高度增长而降低,不同时次温度/湿度的差异主要集中在中低层大气中,越靠近地面大气温度/湿度差异越突出。从不同时次的表现来看,08时的温度最低,14时温度值最高。08时和14时大气的比湿较小,02时和20时的大气比湿较大。位温则是随高度增长,最大差异出现在3320m以下大气层中,14时和20时位温廓线存在明显的绝热及超绝热现象,该2个时次大气边界层表现为明显的混合边界层特征,低层大气层结为静力不稳定。而08时和02时的大气廓线则呈现稳定边界层特征。四个时次风速廓线都是次地转的,边界层内某一高度皆有一个风速极大值出现,20时边界层内风速极大值最大。地表物理量逐日演变情况为:08时温度最低,其次是02时,然后是20时,最高温度出现在14时,这个时次的变动幅度也最为显著。14时、08时比湿均值最小,20时、02时平均比湿较大,20时变幅最大。最低气压出现在20时,其次是14时,然后是08时,最高气压出现在02时,20时变幅最大。02时地面风速最小,其次是08时,再次为20时,14时风速最大,变动幅度最大。
|
| 关 键 词： | 探空 边界层 垂直廓线 地表 逐日 |
| 收稿时间： | 2015-11-12 |
Analysis of Characteristics of the Lower Atmosphere at Jiulong Station Using Encryption Sounding Observation Data |
| |
| Affiliation: | Institute of Plateau Meteorology, CMA/Heavy Rain and Drought-Flood Disasters in Plateau and Basin Key Laboratory of Sichuan Province, Chengdu 610072, China |
| |
| Abstract: | In this paper,based on encryption sounding data of years of continuous observation at the Jiulong station,through the comparison and analysis,to realize the site boundary layer atmosphere has the following characteristics: in the summer,the boundary air's temperature / humidity decreases with height,and not at the same time of temperature / humidity differences mainly concentrated in the lower atmosphere,the more close to the ground atmospheric temperature / humidity difference is more prominent. Never time performance at the same time,the temperature is lowest at 08: 00,the temperature is highest at 14: 00. The atmospheric humidity are smaller at 08: 00 and 14: 00,the air's humidity is bigger at 02: 00 and 20: 00.Potential temperature is increase with height,the biggest difference in the atmosphere below 3320 m. a temperature profile obvious adiabatic and super adiabatic phenomenon at 14: 00 and 20: 00,mixed boundary layer characteristics is obvious in atmospheric boundary layer at the two times,and atmospheric profile has stable boundary layer characteristics at 08: 00 and 02:00. The boundary layer has a maximum for wind speed,and the wind speed of the boundary layer is the largest at 20: 00.Surface physical quantity day by day evolution: temperature is minimum at 08: 00,the second at 02: 00,the highest temperature appears at 14: 00. 14 when,08,when the minimum average specific humidity is smaller at 14: 00 and 08: 00,and average specific humidity is bigger at 20: 00 and 02: 00. Minimum pressure appears at 20: 00,followed by 14,the highest pressure appears at 02: 00. the ground wind speed is Minimum at 02: 00,the biggest wind speed appears at 14: 00. |
| |
| Keywords: | |
|
| 点击此处可从《高原山地气象研究》浏览原始摘要信息 |
|
点击此处可从《高原山地气象研究》下载全文 |
|
