Based on the initial field temperature data of ECMWF 850 hPa from Jan- uary 2012 to December 2015, linear interpolation method of ECMWF was employed to calculate the 850 hPa temperature values at 8:00 and 20:00 of 7...Based on the initial field temperature data of ECMWF 850 hPa from Jan- uary 2012 to December 2015, linear interpolation method of ECMWF was employed to calculate the 850 hPa temperature values at 8:00 and 20:00 of 7 stations (Jiamusi, Tangyuan, Huachuan, Huanan, Fujin, Tongjiang, Fuyuan). Combined with the observed daily minimum and maximum air temperatures at the same time of the 7 stations, the correlations of the 850 hPa temperature values at 8:00 and 20:00 with the daily maximum or minimum air temperature of the ground meteorological obser- vation stations were established, and the ground observation data in accordance with the relevant analysis and correlation test principle of the prediction equation for factor were primarily selected. Regression method was used to establish forecast e- quation dividing into counties, month by month. The results showed that the 850 hPa temperature values at 8:00 and 20:00 were significantly correlated with the daily maximum or minimum air temperature, and the established temperature fore- cast equation was of certain guiding significance for the forecast of daily minimum and maximum temperature, which could help to improve the forecast accuracy.展开更多
利用达日地区近30年(1986—2015年)探空资料(7:00、19:00)和地面观测资料,运用气候统计诊断分析方法,对地面、高空500 h Pa温度进行分析。结果表明:1近30年来,地面和500 h Pa气温在每个时段的增温率是不同的,地面气温增温率高于500 h Pa...利用达日地区近30年(1986—2015年)探空资料(7:00、19:00)和地面观测资料,运用气候统计诊断分析方法,对地面、高空500 h Pa温度进行分析。结果表明:1近30年来,地面和500 h Pa气温在每个时段的增温率是不同的,地面气温增温率高于500 h Pa,19:00的增温率又高于7:00,各时段的增温率分别为7:00地面0.35℃/10年、19:00地面0.48℃/10年、7:00 500 h Pa 0.16℃/10年、19:00 500 h Pa0.17℃/10年。2地面、500 h Pa在2个时间段均有共变现象,为正相关,关系密切。在7:00,地面平均气温在四季均呈现上升趋势,夏季增温最显著,春季增温最小;500 h Pa的增温则主要集中在冬季,春季亦最小。月平均气温线性趋势分析中,地面气温2月的增温率最大,4月最小;500 h Pa气温9月的增温率最大,且高于同月份的地面气温倾向率。3在19:00,地面与500 h Pa的气温变化曲线幅度大致相同,为高度正相关。地面气温在春季的增温率最大,夏季最小;500 h Pa的增温主要是夏季,秋季最小。地面和500 h Pa每月的气温变化倾向率也不相同,2月的地面月平均气温增温率最大,6月最小;500 h Pa层的月平均气温增温率在2月最大,6月最小。4在进一步细致分析地面气温与500 h Pa气温相关性的基础上,可利用地面气温场和500 h Pa气温场互相进行插补。展开更多
文摘Based on the initial field temperature data of ECMWF 850 hPa from Jan- uary 2012 to December 2015, linear interpolation method of ECMWF was employed to calculate the 850 hPa temperature values at 8:00 and 20:00 of 7 stations (Jiamusi, Tangyuan, Huachuan, Huanan, Fujin, Tongjiang, Fuyuan). Combined with the observed daily minimum and maximum air temperatures at the same time of the 7 stations, the correlations of the 850 hPa temperature values at 8:00 and 20:00 with the daily maximum or minimum air temperature of the ground meteorological obser- vation stations were established, and the ground observation data in accordance with the relevant analysis and correlation test principle of the prediction equation for factor were primarily selected. Regression method was used to establish forecast e- quation dividing into counties, month by month. The results showed that the 850 hPa temperature values at 8:00 and 20:00 were significantly correlated with the daily maximum or minimum air temperature, and the established temperature fore- cast equation was of certain guiding significance for the forecast of daily minimum and maximum temperature, which could help to improve the forecast accuracy.
文摘利用达日地区近30年(1986—2015年)探空资料(7:00、19:00)和地面观测资料,运用气候统计诊断分析方法,对地面、高空500 h Pa温度进行分析。结果表明:1近30年来,地面和500 h Pa气温在每个时段的增温率是不同的,地面气温增温率高于500 h Pa,19:00的增温率又高于7:00,各时段的增温率分别为7:00地面0.35℃/10年、19:00地面0.48℃/10年、7:00 500 h Pa 0.16℃/10年、19:00 500 h Pa0.17℃/10年。2地面、500 h Pa在2个时间段均有共变现象,为正相关,关系密切。在7:00,地面平均气温在四季均呈现上升趋势,夏季增温最显著,春季增温最小;500 h Pa的增温则主要集中在冬季,春季亦最小。月平均气温线性趋势分析中,地面气温2月的增温率最大,4月最小;500 h Pa气温9月的增温率最大,且高于同月份的地面气温倾向率。3在19:00,地面与500 h Pa的气温变化曲线幅度大致相同,为高度正相关。地面气温在春季的增温率最大,夏季最小;500 h Pa的增温主要是夏季,秋季最小。地面和500 h Pa每月的气温变化倾向率也不相同,2月的地面月平均气温增温率最大,6月最小;500 h Pa层的月平均气温增温率在2月最大,6月最小。4在进一步细致分析地面气温与500 h Pa气温相关性的基础上,可利用地面气温场和500 h Pa气温场互相进行插补。