陇东黄土高原城市酸雨特征监测统计分析  

Statistic Analysis of Arid Rain Character in Loess Plateau City of Longdong

作　　者：王位泰[1] 黄斌 姚玉璧 蒲金涌 张天锋 

机构地区：[1]中国气象局兰州干旱气象研究所,甘肃兰州730020 [2]庆阳市气象局,甘肃庆阳745000 [3]定西市气象局,甘肃定西743000 [4]天水市北道区气象局,甘肃天水741020

出　　处：《干旱气象》2005年第2期44-49,共6页Journal of Arid Meteorology

基　　金：甘肃省气象局科研基金项目(2002-08)资助.

摘　　要：根据西峰国家基准气候站11a酸雨监测与庆阳市北部主要污染源资料样本,按照中国气象局确定的酸雨标准统计分析发现:不计风场平流影响条件下,1992～2000年庆阳市酸雨度在波动中减弱,2001～2002年有所增强,年酸雨频率为逐年减弱趋势,月酸雨度3月和11月最强,PH值≤4.80,8～11月酸雨频率最大达24%～35%;在雨前和雨中考虑风场平流因子作用,北部污染源对庆阳市年酸雨度强度平流影响不明显,对酸雨年频率有增大影响,对月酸雨度影响10月最显著,PH值减小0.3,在月酸雨频率增大影响上主要是盛夏6～8月.初步揭示了陇东黄土高原城市存在酸雨的基本事实,对于防治酸雨危害和保护生态环境具有积极意义.Based on acid rain monitoring data of 11 years in Xifeng climatological station, and main pollutant source data samples in north of Qingyang city, according to acid rain monitoring standard made by China Meteorological Administration, acid rain characteristics were analyzed statistically. Results show that acid rain degree weakened with fluctuation during 1992~2000 in Qingyang city and boosted up during 2001~2002 without considering influence of wind advection, the frequency occurring acid rain in a year declined yearly, the monthly acid rain degree is maximum in March and November, PH≤0.48, the frequency occurring acid rain is maximum of 24%~35% from August to November. Considering the influence of wind advection in or before rain, the influence of pollutant source in the north on yearly acid rain intensity isn't obvious, but it can make the frequency occurring acid rain increase in a year, the influence on acid rain degree is marked in October, PH reduced 0.3, the influence on monthly acid rain occurring is mainly in summer. The study revealed the fact that acid rain exists over Longdong loess plateau, it has an active meaning to cure acid rain harm and to protect ecology environment.

关 键 词：黄土高原 城市 酸雨 统计分析 

分 类 号：P426.6[天文地球—大气科学及气象学]