中国近30a臭氧气候场特征

利用1979—2005年TOMS（total ozone mapping spectrometer）和2006—2007年OMI（ozone mo-nitoring instrument）的卫星观测资料,分析中国地区对流层臭氧含量（tropospheric ozone residue,TOR）、整层臭氧含量（total ozone,TO）的空间分布和季节变化特征,利用二项式加权平均法、Mann-Kendall突变检验法以及小波分析法分析南方典型地区广州臭氧序列的趋势、突变以及周期特征。结果表明,中国地区多年平均对流层臭氧柱含量为35.89DU,东中部地区高于西部,四川东部和重庆西部存在极高值区,青藏高原为极低值区;对流层臭氧夏季平均值最高,冬季最低,春季高于秋季。中国地区多年平均臭氧总量为298.61DU。臭氧总量随着纬度增大而增大,成带状分布,青藏高原为极低值区;臭氧总量春季平均值最大,秋季为最低。南方广州地区的对流层臭氧在1979—2007年之间存在明显的上升趋势,时间变率为0.38DU/（10a）;TOR时间序列在1997年发生突变,存在显著的1a及2a的周期。臭氧总量在1979—2007年之间存在明显的下降趋势,变化率为-2.1DU/（10a）;TO在1993年发生突变,存在显著的2a周期

Characteristics of ozone in China in recent thirty years

Based on the observational data of total ozone mapping spectrometer from 1979—2005 and ozone monitoring instrument from 2006—2007,the regional and seasonal distribution of tropospheric ozone residue and total ozone were analyzed.The abrupt change and period characteristics of ozone in Guangzhou were analyzed by such methods as binomial weighted average,Mann-Kandall abrupt change verification and wavelet analysis.The results show that the average tropospheric ozone residue is 35.89 DU in China and that the distribution of TOR is higher in east area than in west area.The highest value appears in eastern Sichuan and western Chongqing while the lowest value appears in Tibetan Plateau.TOR reaches the peak in summer,the second peak in spring,and the value of TOR is the minimum in winter.The average total ozone is 298.61 DU in China.The TO grows with the latitude,but Tibetan Plateau is the region with the lowest TO value.TO presents the highest value in spring and the lowest value in autumn.TOR in Guangzhou took on the trend of rising during 1979 and 2007.The increase of the annual mean TOR in Guangzhou was 0.38 DU/（10 a）.The abrupt change happened in 1997.TOR in Guangzhou presented obvious period of one and two years.TO in Guangzhou took on the trend of reducing during 1979 and 2007.The decrease of the annual mean TO was 2.1 DU/（10 a）.The abrupt change happened in 1993.TO in Guangzhou presented obvious period of two years