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中文摘要: 从天气情报服务的实际需要出发，研究并提出了考虑近期降水、土壤底墒（前期降水）和气温三种因素，利用实时天气资料来计算干旱指数的方案，5年历史资料和1997年北方春旱的检验表明，这对于实时监测和评估大范围旱情的变化和提供天气情报服务是有用的。
中文关键词: 实时监测评估，干旱指数，检验
Abstract:ased on the requirement of meteorological information service,the scheme of calculating drought index was designed in consideration of three conditions using real time weather information,that is :precipitation in recent time,moisture in the soil (precipitation in earlier stage) and air temperature.
The inspection of spring drought in North China in 5 years of historical data and in 1997 shows that it is quite helpful for real time monitoring and assessment of drought and ased on the requirement of meteorological information service,the scheme of calculating drought index was designed in consideration of three conditions using real time weather information,that is :precipitation in recent time,moisture in the soil (precipitation in earlier stage) and air temperature.
The inspection of spring drought in North China in 5 years of historical data and in 1997 shows that it is quite helpful for real time monitoring and assessment of drought and meteorological information service.
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引用文本：
李小泉,顾秋瑾,牛若芸,1998.用天气资料实时监测和评估北方的旱情变化[J].气象,24(1):13-19.
,1998.Real time Monitoring and Assessment of Drought in North China using Weather Information[J].Meteor Mon,24(1):13-19.
李小泉,顾秋瑾,牛若芸,1998.用天气资料实时监测和评估北方的旱情变化[J].气象,24(1):13-19.
,1998.Real time Monitoring and Assessment of Drought in North China using Weather Information[J].Meteor Mon,24(1):13-19.