大气科学学报
大氣科學學報
대기과학학보
JOURNAL OF NANJING INSTITUTE OF METEOROLOGY
2012年
3期
372-379
,共8页
金敏%张其林%安兴琴%王郁%侯青
金敏%張其林%安興琴%王鬱%侯青
금민%장기림%안흥금%왕욱%후청
闪电%氮氧化物(NOx)%时空分布
閃電%氮氧化物(NOx)%時空分佈
섬전%담양화물(NOx)%시공분포
lightning%NOx%temporal and spatial distribution
利用中国2008-2010年的闪电定位数据,分析了闪电次数的空间分布和时间变化,结合Price理论,估算了闪电产生的氮氧化物(LNOx)量,初步分析了LNOx的时空分布特征。结果表明:闪电的高发期为7、8月,广州、武汉为闪电高发区;LNOx主要分布在(105~125°E,25~40°N)地区,其中武汉、广州、成都、重庆、长沙、南京和南昌地区量值较大;7月和8月LNOx的产量明显高于其他几个月,8月产量最高;此外,LNOx的分布具有明显的季节特征,春夏秋冬四季产量分别占总产量的4.8%、89.4%、5.3%以及0.5%,春季的LNOx主要出现在广州地区,夏季LNOx高值区分布北移,分布范围较广;秋季分布范围减小,最大值出现在广州地区,冬季产量明显变小,最大值出现在武汉的西南方向。
利用中國2008-2010年的閃電定位數據,分析瞭閃電次數的空間分佈和時間變化,結閤Price理論,估算瞭閃電產生的氮氧化物(LNOx)量,初步分析瞭LNOx的時空分佈特徵。結果錶明:閃電的高髮期為7、8月,廣州、武漢為閃電高髮區;LNOx主要分佈在(105~125°E,25~40°N)地區,其中武漢、廣州、成都、重慶、長沙、南京和南昌地區量值較大;7月和8月LNOx的產量明顯高于其他幾箇月,8月產量最高;此外,LNOx的分佈具有明顯的季節特徵,春夏鞦鼕四季產量分彆佔總產量的4.8%、89.4%、5.3%以及0.5%,春季的LNOx主要齣現在廣州地區,夏季LNOx高值區分佈北移,分佈範圍較廣;鞦季分佈範圍減小,最大值齣現在廣州地區,鼕季產量明顯變小,最大值齣現在武漢的西南方嚮。
이용중국2008-2010년적섬전정위수거,분석료섬전차수적공간분포화시간변화,결합Price이론,고산료섬전산생적담양화물(LNOx)량,초보분석료LNOx적시공분포특정。결과표명:섬전적고발기위7、8월,엄주、무한위섬전고발구;LNOx주요분포재(105~125°E,25~40°N)지구,기중무한、엄주、성도、중경、장사、남경화남창지구량치교대;7월화8월LNOx적산량명현고우기타궤개월,8월산량최고;차외,LNOx적분포구유명현적계절특정,춘하추동사계산량분별점총산량적4.8%、89.4%、5.3%이급0.5%,춘계적LNOx주요출현재엄주지구,하계LNOx고치구분포북이,분포범위교엄;추계분포범위감소,최대치출현재엄주지구,동계산량명현변소,최대치출현재무한적서남방향。
In this paper, we analyzed the spatial distribution and temporal variance of lightning frequen-cy by using lightning positioning data in China during 2008 and 2010. Based on Price's theory, we esti-mated the quantity of NOx emission produced by lightning (LNOx) and preliminarily analyzed the temporal and spatial distribution of LNOx. The results showed that lightning occurred more frequently in July and August and mainly in Guangzhou and Wuhan. LNOx was mainly distributed in the area of 25-40°N and 105-125°E. The quantity of LNOx in Wuhan, Guangzhou, Chengdu, Chongqing, Chan- gsha,Nanjing and Nanchang are higher than that in other regions, and the maximum could reach up to 1.23 × 10^7g each grid. August saw the highest yield while the second highest was July. Furthermore, the seasonal characteristics of LNOx distribution were obviously, and the percentages in spring, summer, au-tumn and winter were 4. 8% ,89.4% ,5.3% and 0. 5% respectively. LNOx mainly appeared in Guang-zhou area in spring while in summer it moved northward and became wide and strong. The distribution area decreased in autumn and the maximum occurred in Guangzhou. In winter, the quantity of LNOx decreased significantly with its maximum appearing in the southwest of Wuhan.