干旱气象
榦旱氣象
간한기상
GANSU METEOROLOGY
2014年
2期
233-238
,共6页
周黎明%陈跃%牛生杰%孟蕾
週黎明%陳躍%牛生傑%孟蕾
주려명%진약%우생걸%맹뢰
祁连山地区%气溶胶粒子%日变化%谱分布
祁連山地區%氣溶膠粒子%日變化%譜分佈
기련산지구%기용효입자%일변화%보분포
Qilian Mountain%aerosol particle%daily variation%spectral distribution
利用2007年7月祁连山区民乐县何庄进行的晴空观测所获得的PMS资料,对祁连山区大气气溶胶粒子的数浓度分布及日变化特征进行了统计分析,并结合相对湿度、风速和风向等气象资料,讨论了气溶胶粒子浓度与气象因子的关系。结果表明,该地区PCASP探测的气溶胶平均数浓度为102~103个·cm-3,FSSP-100探测的粒子平均数浓度为10-2~101个·cm-3,日变化特征表现为早晚大,中午小;FSSP和PCASP探测的气溶胶粒子谱分别呈负指数型和单峰型分布特点,其Junge幂指数谱分布和Deirmendjian广义Γ谱分布的分段拟合,能够更好地显示当地粒子的演变特征;此外,气溶胶粒子不仅与相对湿度、气温之间存在相关性,而且与风向风速亦有明显关系。
利用2007年7月祁連山區民樂縣何莊進行的晴空觀測所穫得的PMS資料,對祁連山區大氣氣溶膠粒子的數濃度分佈及日變化特徵進行瞭統計分析,併結閤相對濕度、風速和風嚮等氣象資料,討論瞭氣溶膠粒子濃度與氣象因子的關繫。結果錶明,該地區PCASP探測的氣溶膠平均數濃度為102~103箇·cm-3,FSSP-100探測的粒子平均數濃度為10-2~101箇·cm-3,日變化特徵錶現為早晚大,中午小;FSSP和PCASP探測的氣溶膠粒子譜分彆呈負指數型和單峰型分佈特點,其Junge冪指數譜分佈和Deirmendjian廣義Γ譜分佈的分段擬閤,能夠更好地顯示噹地粒子的縯變特徵;此外,氣溶膠粒子不僅與相對濕度、氣溫之間存在相關性,而且與風嚮風速亦有明顯關繫。
이용2007년7월기련산구민악현하장진행적청공관측소획득적PMS자료,대기련산구대기기용효입자적수농도분포급일변화특정진행료통계분석,병결합상대습도、풍속화풍향등기상자료,토론료기용효입자농도여기상인자적관계。결과표명,해지구PCASP탐측적기용효평균수농도위102~103개·cm-3,FSSP-100탐측적입자평균수농도위10-2~101개·cm-3,일변화특정표현위조만대,중오소;FSSP화PCASP탐측적기용효입자보분별정부지수형화단봉형분포특점,기Junge멱지수보분포화Deirmendjian엄의Γ보분포적분단의합,능구경호지현시당지입자적연변특정;차외,기용효입자불부여상대습도、기온지간존재상관성,이차여풍향풍속역유명현관계。
Based on the PMS (Particle Measuring System)observational data under clear sky condition in July 2007 in Hejiazhuang vil-lage of Gansu Province located in the foot of the Qilian Mountain,the distribution and diurnal variation of aerosol particles number con-centration were analyzed,firstly. Then,combined with the relative moisture,wind speed and wind direction from Niangniang hill of the Qilian Mountain,the relationship between the concentration of aerosol particles and meteorological factors was discussed. The results showed that the mean concentration of aerosol particles probed by PCASP and FSSP-100 was 102 ~103个·cm-3 and 10 -2 ~101个·cm-3 respectively,and the diurnal variation of aerosol was big in the morning and evening,while that was small at noon. The spec-tral distributions of aerosol particles observed by FSSP and PCASP appeared the feature of power and negative exponent functions,re-spectively and were well fitted by Junge spectral distribution and Deirmendjian-Γ spectral distribution,which could perfectly reflect the evolution characteristics of the particle. In addition,the concentration of aerosol particles was not only consistent with the relative humidity and temperature,but also correlative with wind speed and wind direction.