Supplementary Material
Source appointment of fine particle number and volume concentration during severe haze pollution in Beijing in January 2013
Zirui Liu1, Yuesi Wang1*, Bo Hu1, Dongsheng Ji1, Junke Zhang1, Fangkun Wu1, Xin Wan2, Yonghong Wang3
1.State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;
2.Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences (CAS), Beijing 100085, China;
3. College of Atmospheric Science, Lanzhou University, Lanzhou, 730000, China
Corresponding to:
Table Legends
Table S1 Descriptive statistics of the measured number concentrations in different size ranges and the major chemical compositions in PM1 during the winter intensive observation period in Beijing.
TableS2 Description of the hourly average concentrations of gaseous pollutants and meteorological data measured during the winter intensive observation period in Beijing.
Table S3. Mass concentration (Mi ), median diameter (dva,i ) and geometric standard deviation (σi ) of the modes calculated by fitting lognormal functions to the AMS size distributions.
Figure Legends
Fig. S1 Diurnal variations of size-resolved particle number concentrations (a. nucleation mode; b. Aitken mode and c. accumulation mode) observed at the IAP site and the PKU site (Wu et al., 2008). Particle number concentrations data in summer of IAP was obtained in Liu et al. (2014). Note that the diameter ranges for the nucleation mode in PKU is 3-20 nm, and that in IAP is 14-20 nm.
Fig. S2 Wind profile during the study period.
Fig. S3 Diurnal pattern of gaseous pollutants during the study period
Fig. S4 Diurnal pattern of meteorological parameters (a. Temperature (T), b. Relative Humidity (RH), c. Wind Speed (WS), d. Pressure (P), e. Solar Radiation (SR)) during the study period.
Fig. S5 Diurnal pattern of particle chemical composition (a. Organics (Org.), b. NO3-, c. SO42-, d. NH4+, e. Cl-) during the study period.
Table 1 Descriptive statistics of the measured number concentrations in different size ranges and the major chemical compositions in PM1 during the winter intensive observation period in Beijing.
Species / N / Mean / Median / SD / Min / MaxPNC(14-20nm, cm-3) / 668 / 519 / 523 / 298 / 60 / 1553
PNC(20-100nm, cm-3) / 668 / 23561 / 22075 / 10676 / 4553 / 69214
PNC(100-500nm, cm-3) / 668 / 13252 / 13618 / 7464 / 1055 / 42310
PNC(500-1000nm, cm-3) / 668 / 115 / 42 / 147 / 1 / 840
PNC(1000-2500nm, cm-3) / 668 / 3 / 2 / 4 / 0 / 34
Organics(µg/m3) / 665 / 29.2 / 22.3 / 24.4 / 1.4 / 181.8
Nitrate(µg/m3) / 665 / 8.5 / 6.7 / 7.5 / 0.1 / 40.6
Sulfate(µg/m3) / 665 / 14.3 / 8.2 / 14.4 / 1.1 / 73.6
Ammonium(µg/m3) / 665 / 7.5 / 5.5 / 6.5 / 0.4 / 31.9
Chlorine(µg/m3) / 665 / 3.4 / 2.5 / 3.0 / 0.0 / 14.3
TableS2 Description of the hourly average concentrations of gaseous pollutants and meteorological data measured during the winter intensive observation period in Beijing.
Species / N / Mean / SD / Median / Min / MaxNO(µg/m3) / 672 / 65.9 / 53.4 / 347.5 / 62.0 / 0.6
NO2(µg/m3) / 672 / 85.5 / 81.8 / 256.8 / 38.3 / 13.5
SO2(µg/m3) / 672 / 52.2 / 44.5 / 31.9 / 9.1 / 168.1
O3(µg/m3) / 672 / 12.3 / 6.2 / 12.9 / 1.2 / 60.1
Temperature (℃) / 672 / -2.0 / -2.9 / 3.3 / -12.1 / 4.6
Relative Humidity (%) / 672 / 46.8 / 42.0 / 21.2 / 11.0 / 87.0
Pressure (mBar) / 672 / 1021.3 / 1021.4 / 5.6 / 1009.9 / 1039.4
Wind Speed (m/s) / 672 / 2.5 / 1.2 / 1.1 / 0.1 / 8.1
Solar radiation (w/m2) / 672 / 79.8 / -0.7 / 139.5 / -4.5 / 529.0
Table S3. Mass concentration (Mi ), median diameter (dva,i ) and geometric standard deviation (σi ) of the modes calculated by fitting lognormal functions to the AMS size distributions.
M0 / dva,0 / σ0 / M1 / dva,1 / σ1(µg m-3) / (nm) / (µg m-3) / (nm)
Organics / 31.3 / 491 / 1.4 / 4.1 / 181 / 0.8
Nitrate / 7.0 / 623 / 1.2 / 4.8 / 308 / 0.6
Sulfate / 13.3 / 671 / 1.0 / 4 / 431 / 0.5
Ammonium / 5.9 / 623 / 1.2 / 2.3 / 292 / 0.6
Chloride / 0.5 / 618 / 1.5
Fig. S1 Diurnal variations of size-resolved particle number concentrations (a. nucleation mode; b. Aitken mode and c. accumulation mode) observed at the IAP site and the PKU site (Wu et al., 2008). Particle number concentrations data in summer of IAP was obtained in Liu et al. (2014). Note that the diameter ranges for the nucleation mode in PKU is 3-20 nm, and that in IAP is 14-20 nm.
Fig. S2 Wind profile during the study period.
Fig. S3 Diurnal pattern of gaseous pollutants during the study period
Fig. S4 Diurnal pattern of meteorological parameters (a. Temperature (T), b. Relative Humidity (RH), c. Wind Speed (WS), d. Pressure (P), e. Solar Radiation (SR)) during the study period.
Fig. S5 Diurnal pattern of particle chemical composition (a. Organics (Org.), b. NO3-, c. SO42-, d. NH4+, e. Cl-) during the study period.
References
[1]. Liu ZR, Hu B, Liu Q, Sun Y, Wang YS. (2014) Source apportionment of urban fine particle number concentration during summertime in Beijing. Atmos Environ 96: 359-369.
[2]. Wu ZJ, Hu M, Lin P, Liu S, Wehner B, Wiedensohler A. (2008) Particle number size distribution in the urban atmosphere of Beijing, China. Atmos Environ 42: 7967-7980.