Correlation methods
; Satellite ground stations
; Shape memory effect
; Troposphere
; Haze
; Meteorological condition
; Particle number concentration
; Particle number size distribution
; Pearson correlation analysis
; Scanning mobility particle sizer
; Synchronous measurements
; Vertical profile
; Size distribution
; concentration (composition)
; haze
; megacity
; nitrogen dioxide
; particle size
; size distribution
; troposphere
; vertical distribution
; vertical profile
; air pollutant
; air quality
; altitude
; Article
; China
; controlled study
; correlation analysis
; haze
; meteorology
; particle number concentration
; particle number size distribution
; particle size
; pollutant
; priority journal
; troposphere
; wind
; China
; Shanghai
Scopus学科分类:
Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要:
A tethered balloon-based measurement campaign of particle number concentration (PNC) and particle number size distribution (PNSD) in the size range of 15.7–661.2 nm was conducted within the lower troposphere of 1000 m in Shanghai, a Chinese megacity, during December of 2015. The meteorological conditions, PNC, and PNSD were synchronously measured at the ground-based station as well as by the tethered balloon. On ground level, the 88.2 nm particles were found to have the highest PNC. The Pearson correlation analysis based on the ground level data showed NO2had a strong correlation with PNC. The synchronous measurement of PNC and PNSD at the ground station and on the tethered balloon showed that the 15.7–200 nm particles had higher PNC on ground level, but the PNC of 200–661.2 nm particles was higher at 400 m. One haze event (Dec 22nd-Dec 23rd) was selected for detailed discussion on the variation of vertical profiles of PNSD and PNC. The vertical distribution of characteristics of PNC and PNSD were observed and compared. Results indicated that the highest MaxDm (the diameter with the highest PNC) during those three launches all appeared at a high altitude, usually above 300 m. Compared to the clean days, the relatively bigger MaxDm at each height in the haze days also indicated regional transport of pollutants might contribute to more to that haze event. � 2017 Elsevier Ltd
State Environmental Protection Key Lab of Environmental Risk Assessment and Control on Chemical Processes, School of Resources & Environmental Engineering, East China University of Science and Technology, Shanghai, China; Shanghai Environmental Monitoring Center, Sanjiang Road, Shanghai, China; The 38th Insititute of China Electrics Technology Group CorporationAnhui, China
Recommended Citation:
Zhang K,, Wang D,, Bian Q,et al. Tethered balloon-based particle number concentration, and size distribution vertical profiles within the lower troposphere of Shanghai[J]. Atmospheric Environment,2017-01-01,154