本文選題：霧霾　切入點：空氣質(zhì)量指數(shù)　出處：《武漢大學學報(信息科學版)》2017年05期

【摘要】：利用國際GNSS服務(International GNSS Service,IGS)提供的對流層天頂延遲(zenith path delay,ZPD)產(chǎn)品,研究其與霧霾的相關性,并探究了造成霧霾的"元兇"——懸浮顆粒物與氣壓、溫度和濕度的變化關系。首先,研究了中國境內(nèi)4個IGS站30d的日平均ZPD與量化評定霧霾的空氣質(zhì)量指數(shù)(air quality index,AQI)的變化趨勢,發(fā)現(xiàn)二者基本同步增大(減小)。內(nèi)陸3個站點的相關系數(shù)絕對值均大于0.5,說明ZPD與表征霧霾的AQI有著較強的相關關系,霧霾對對流層延遲產(chǎn)生影響。其次,對1h采樣率的北京房山空氣質(zhì)量分指數(shù)(individual air quality index,IAQI)與ZPD進行分析,二者的變化趨勢基本一致,其中PM2.5、PM10、AQI與ZPD的相關系數(shù)分別為0.504 2、0.539 1和0.555 4。同時,當AQI達到300以上重度污染時,會對ZPD產(chǎn)生5cm以上差值的顯著影響。最后,利用IGS的M文件探究了北京房山各IAQI與氣壓、溫度、濕度24h變化,一天中IAQI、氣壓、濕度均呈"U"變化趨勢,而溫度則呈現(xiàn)倒"U"變化,說明霧霾的形成與氣壓、溫度、濕度相關,并利用逐步線性回歸給出了概略模型。
[Abstract]:Using the tropospheric zenith path delay-ZPDs offered by the International GNSS Service, to study its correlation with haze, and to explore the relationship between suspended particulates and air pressure, temperature and humidity, which are the "culprits" that cause haze. The variation trend of daily average ZPD of four IGS stations in China for 30 days and the air quality index (haze) of air quality index (quality) for quantitative evaluation of haze have been studied. It is found that the correlation coefficients of the three stations in the interior are all greater than 0.5, indicating that ZPD has a strong correlation with the AQI representing haze, and haze has an effect on tropospheric delay. The air quality index of Beijing Fangshan at 1 h sampling rate was analyzed by individual air quality index IAQI and ZPD. The variation trend of the two indexes was basically the same. The correlation coefficients between PM2.5 and ZPD were 0.504 ~ 0.539 1 and 0.555 4 respectively. At the same time, when the AQI reached more than 300 heavy pollution, Finally, using the M document of IGS, we explored the changes of IAQI and air pressure, temperature and humidity in Fangshan, Beijing for 24 hours. During the day, IAQI, air pressure and humidity all showed a "U" trend, while the temperature showed a reverse "U" change. The formation of haze is related to air pressure, temperature and humidity, and a general model is given by stepwise linear regression.
【作者單位】： 信息工程大學導航與空天目標工程學院;95956部隊;
【分類號】：P228.4
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本文編號：1688098