[1]李育,徐安伦,董保举.大理地基GPS观测大气可降水量变化特征[J].气象研究与应用,2020,41(03):32-37.[doi:10.19849/j.cnki.CN45-1356/P.2020.3.06]
 LI Yu,Xu Anlun,Dong Baoju.Variation characteristics of precipitable water volume observed by GPS in Dali[J].Journal of Meteorological Research and Application,2020,41(03):32-37.[doi:10.19849/j.cnki.CN45-1356/P.2020.3.06]
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大理地基GPS观测大气可降水量变化特征()
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气象研究与应用[ISSN:1673-8411/CN:45-1356/P]

卷:
第41卷
期数:
2020年03期
页码:
32-37
栏目:
研究论文
出版日期:
2020-09-30

文章信息/Info

Title:
Variation characteristics of precipitable water volume observed by GPS in Dali
作者:
李育12 徐安伦12 董保举12
1. 大理国家气候观象台, 云南 大理 671003;
2. 大理市气象局, 云南 大理 671003
Author(s):
LI Yu12 Xu Anlun12 Dong Baoju12
1. Dali National Climate Observatory, Dali Yunnan, 671003;
2. Dali Meteorological Bureau, Dali Yunnan, 671003
关键词:
大气可降水量日变化季节变化大理
Keywords:
precipitable water volumediurnal variationseasonal variationDali
分类号:
P412.13
DOI:
10.19849/j.cnki.CN45-1356/P.2020.3.06
摘要:
利用中日JICA项目2010-2013年大理地基GPS探测的逐时大气可降水量PWV资料,分析PWV的日变化、月变化及季节变化特征,选取不同季节典型晴天、雨天进行分析对比,探讨有、无降水日PWV的差异特征,与大理国家基准气候站同期降水、气温、水汽压、相对湿度分析对比。结果表明,PWV晴天日变化特征与气温相似,呈单峰型分布,雨天时,PWV会在降雨前或降雨时出现峰值,通常呈现准双峰型日变化特征,其日变化特征湿季比干季更为显著,PWV季节变化特征与水汽压、气温、降水趋势接近,与大理地区干湿季分明的低纬高原季风气候吻合。
Abstract:
Based on the hourly PWV data of ground-based GPS in Dali from 2010 to 2013, the characteristics of daily, monthly and seasonal variations of precipitable water volume (PWV) were analyzed. The typical sunny and rainy days in different seasons are selected to explore the difference characteristics of PWV between days with and without precipitation, and compare with the analysis of precipitation, temperature, vapor pressure, and relative humidity in the same period of the Dali national reference climate station. The results show that the daily variation characteristics of PWV on sunny days are similar to the temperature, with a unimodal distribution. On rainy days, PWV will have a peak before or during rainfall, and usually presents a quasi-double-modal daily variation. The diurnal variation characteristics of the wet season are more significant than the dry season, and the seasonal variation characteristics of PWV are similar to water vapor pressure, temperature, and precipitation trends, which are consistent with the low-latitude plateau monsoon climate in Dali with distinct dry and wet seasons.

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备注/Memo

备注/Memo:
收稿日期:2020-03-15。
基金项目:云南省大理州气象局科研项目"云南地基GPS水汽反演系统评估及应用"
作者简介:李育(1979-),男,云南大理人,学士,工程师,主要从事中短期天气预报及GPS水汽探测研究。E-mail:870297873@qq.com
更新日期/Last Update: 1900-01-01