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![Page 1: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/1.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign. RMI December 6 th 2006.
• Validation of the method to retrieve the Aerosol Optical Depth from the Brewer Ozone measurements
• First preliminary results of the aerosol measurements campaign at Uccle
![Page 2: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/2.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Validation of the method to retrieve the Aerosol Optical
Depth from the Brewer Ozone measurements
Anne Cheymol, Hugo De Backer, Weine Josefsson and René Stübi
Cheymol et al., jgr, 2006
![Page 3: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/3.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Overview1. Introduction
2. The Brewer spectrophotometer instrument
3. Description of the method
4. Results
Impact of the neutral density filter on AOD and Validation of the AOD between a Brewer and a sunphotometer
Comparisons between different Brewer at the same place
5. Conclusions and perspectives
![Page 4: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/4.jpg)
Role of aerosol particles
• Most aerosol particles’s knowledge is in VIS and IR and not in UV
• Important role in climate forcing UV-B irradiance reduction by about 5-35% Indirect effect on clouds• Impact on Human health
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
![Page 5: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/5.jpg)
Anthropogenic origin
Polluted day on January 28th 2006
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Photo by A. Delcloo and A. Mangold
smoke
Clear day on November 9th 2006
![Page 6: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/6.jpg)
Natural origin
Sea salt ejected from the sea in the air
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Photo by Plisson
![Page 7: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/7.jpg)
Natural origin
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Clean roof
Photo from the web
Pollen
![Page 8: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/8.jpg)
Seasonal cycle of AOD at Uccle
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
![Page 9: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/9.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Overview1. Introduction
2. The Brewer spectrophotometer instrument
3. Description of the method
4. Results
Impact of the neutral density filter on AOD and Validation of the AOD between a Brewer and a sunphotometer
Comparisons between Brewer at the same place
5. Conclusions and perspectives
![Page 10: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/10.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006
Over 100 Brewer stations (blue points)
![Page 11: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/11.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006
280-363 nm
306-320 nm
![Page 12: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/12.jpg)
Validation of the method to retrieve the AOD. RMI December 6th 2006
Royal Meteorological Institute of Belgium
Zenith angle = za
sunset
Rotation of the instrument during the day
12H
AfternoonMorning
![Page 13: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/13.jpg)
Royal Meteorological Institute of Belgium
Summary of the Brewer measurements
• 5 Direct Sun measurements/3mns every 30mns
• Automatic rotation during the day to follow the sun
• No cloud direct sun measurement
• 25° za 70 ° for one day at Uccle
Validation of the method to retrieve the AOD. RMI December 6th 2006
![Page 14: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/14.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Aerosol Optical Depth = attenuation of solar radiation by aerosol particles
Direct Sun radiation at 306, 310, 313, 316 and 320 nm
![Page 15: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/15.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Overview1. Introduction
2. The Brewer spectrophotometer instrument
3. Description of the method
4. Results
Impact of the neutral density filter on AOD and Validation of the AOD between a Brewer and a sunphotometer
Comparisons between Brewer at the same place
5. Conclusions and perspectives
![Page 16: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/16.jpg)
Attenuation of solar radiation
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
![Page 17: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/17.jpg)
Royal Meteorological Institute of Belgium
Beer’s law equation
S() = K() Io() exp[ Do3 () + Dray () + Daer (sec(za)) ]
Validation of the method to retrieve the AOD. RMI December 6th 2006
Aerosol particlesMoleculeOzone
Signal received by the Brewer
Brewer’s sensitivity to Io()
![Page 18: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/18.jpg)
Royal Meteorological Institute of Belgium
ln[ S() ]-Do3- Dray= ln[ K() Io () ]- () * sec(za) +
Y = A * X + B
Langley plot method
Validation of the method to retrieve the AOD. RMI December 6th 2006
Y axis X axisSlope Intercept
![Page 19: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/19.jpg)
Royal Meteorological Institute of Belgium
Langley plot method 19/06/05 for 320 nm
Y = ln[S()] - Do3 - Dray
A = -() *X = sec(za)+B = ln[K()Io ()]
Validation of the method to retrieve the AOD. RMI December 6th 2006
![Page 20: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/20.jpg)
Selection of clear days for the Langley Plot Method
1. Ozone stdev for individual DS measurements < 2.5 DU
2. za per day 20°
3. Number of good data per day 50
4. Distance between each point and the regression line < 4 (Y unit)
5. Daily mean absolute deviation from the regression line < 0.055 (Y units)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006
![Page 21: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/21.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Calibration factor
Average of these 65 calibration factors with error of about 0.2%
65 Calibration factors at Uccle
![Page 22: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/22.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
A O D = ave rag e o f th e 5 ind iv id u a l A O D
A O D = -((Y -B )/X ) fo r ea ch D S m e a sure m e nt
5 m ea n ca lib ra tio n fa cto rs = 5 B
L in e ar re g re ss ion
B e e r law
Summary of the method
![Page 23: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/23.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Overview1. Introduction
2. The Brewer spectrophotometer instrument
3. Description of the method
4. Results
Impact of the neutral density filter on AOD and Validation of the AOD between a Brewer and a sunphotometer
Comparisons between Brewer at the same place
5. Conclusions and perspectives
![Page 24: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/24.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Where?
![Page 25: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/25.jpg)
Validation of the method to retrieve the AOD. RMI December 6th 2006
Royal Meteorological Institute of Belgium
If solar intensity too high
Brewer instrument
FilterI1
I2
If not Brewer instrument
I1
I2< I1
What is a Brewer’s filter?
![Page 26: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/26.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
320 nm36
8 nm
sunphotometerTime difference max = 3 min
![Page 27: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/27.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Filters impact on AOD
c = 0.87
b = 0.80 ± 0.011
a = -0.08 ± 0.004
c = 0.98
b= 0.85 ± 0.004
a= 0.02 ± 0.0014
N = 1718
Standard filters
N = 1934
Real filters
Errors
![Page 28: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/28.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Where?
![Page 29: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/29.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Arosa
![Page 30: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/30.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
320 nm36
8 nm
Hourly mean AOD compared for 2002
Brewer spectrophotometer
Sunphotometer
![Page 31: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/31.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Comparison Arosa/Davos
c = 0.62
b = 0.56 ± 0.04
a = 0.02 ± 0.0006
N = 335
![Page 32: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/32.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Overview1. Introduction
2. The Brewer instrument
3. Description of the method
Physical equation
Langley plot method
4. Results
Impact of the neutral density filter on AOD and Validation of the AOD between a Brewer and a sunphotometer
Comparisons between different Brewer at the same place
5. Conclusions and perspectives
![Page 33: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/33.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Where?
![Page 34: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/34.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Uccle 2002-2005
N = 5781
c = 0.98
b= 1.02 ± 0.003
a= 0.06 ± 0.001
![Page 35: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/35.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Arosa 2004
N = 2771
c = 0.94
b= 0.98 ± 0.006
a= 0.03 ± 0.002
![Page 36: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/36.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Summary of the comparisons
Brewer 016 040 072
178 0.98
1.02 0.06
156 0.94
0.98 0.03
0.98
0.98 -0.04
072 0.99
0.98 -0.02
![Page 37: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/37.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Overview1. Introduction
2. The Brewer spectrophotometer instrument
3. Description of the method
Physical equation
Langley plot method
4. Results
Impact of the neutral density filter on AOD and Validation of the AOD between a Brewer and a sunphotometer
Comparisons between Brewer at the same place
5. Conclusions and perspectives
![Page 38: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/38.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Conclusions1. Important role of the filter values of the Brewer
spectrophotometer on the accuracy of AOD
2. High level of confidence of the method used to retrieve the AOD:
correlation coefficient > 0.94
slope ~ 1
Intercept is negligible
3. Validation of the Langley plot method with a comparison between Brewer spectrophotometer and a sunphotometer
![Page 39: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/39.jpg)
Royal Meteorological Institute of Belgium
Validation of the method to retrieve the AOD. RMI December 6th 2006.
Perspectives
1. Application of the method at different Brewer stations
2. Determination of relation between different aerosol parameters: AOD, ssa, type, size and air mass origin
![Page 40: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/40.jpg)
Royal Meteorological Institute of Belgium
Aerosol Measurements Campaign at Uccle. RMI December 6th 2006.
First preliminary results of the aerosol measurements
campaign at Uccle
RMI team: Anne Cheymol , Alexander Mangold, Hugo De
Backer, Andy Delcloo, René Lemoine and Roeland Van MalderenGhent university team:
Pr. Willy Maenhaut, Wan Wang, Nico Raes, Xuguang Chi and Jan Cafmeyer
Thanks to the weather forecasters of RMI
![Page 41: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/41.jpg)
Royal Meteorological Institute of Belgium
Aerosol Measurements Campaign at Uccle. RMI December 6th 2006.
Overview
1. Objectives of the campaign
2. The instruments and the first preliminary results
3. Perspectives
![Page 42: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/42.jpg)
Royal Meteorological Institute of Belgium
Aerosol Measurements Campaign at Uccle. RMI December 6th 2006.
Objectives
• Aerosol campaign from January 4th to 30th November 2006 at Uccle
• Determination of the relations between AOD, size and type of aerosol particles and air mass origin
Observations in parallel from Brewer spectrophotometer (AOD) and the other aerosol instruments (sampling and monitoring)
![Page 43: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/43.jpg)
Royal Meteorological Institute of Belgium
Aerosol Measurements Campaign at Uccle. RMI December 6th 2006.
Sampling
by Delcloo and Mangold
PM10
Mineral Aerosol
Organic Aerosol
PM2.5
Mineral Aerosol
Organic Aerosol
![Page 44: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/44.jpg)
Royal Meteorological Institute of Belgium
Aerosol Measurements Campaign at Uccle. RMI December 6th 2006.
Sampling
Filter
by Delcloo and Mangold
by Delcloo and Mangold
by Delcloo and Mangold
Inlet
PM10
PM2.5
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Royal Meteorological Institute of Belgium
Aerosol Measurements Campaign at Uccle. RMI December 6th 2006.
Ratio PM2.5/PM10
![Page 46: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/46.jpg)
Royal Meteorological Institute of Belgium
Aerosol Measurements Campaign at Uccle. RMI December 6th 2006.
Coarse particle PM10-PM2.5
NO313%
Unexpl.12%
OC*1.416%
Crustal33%
EC1.6%
NH42.0%
Sea Salt17%
Sulphate5%
Elements0.5%
Fine particles PM2.5
OC*1.428%
NH417%
Crustal3.2%
Sea Salt3.0%
Sulphate18%
Elements0.5%
Unexpl.1%
NO326%
EC4%
20% anthropogenic source
61% anthropogenic source
![Page 47: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/47.jpg)
Royal Meteorological Institute of Belgium
Aerosol Measurements Campaign at Uccle. RMI December 6th 2006.
TEOMinlet
![Page 48: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/48.jpg)
Royal Meteorological Institute of Belgium
Aerosol Measurements Campaign at Uccle. RMI December 6th 2006.
Mass concentration of PM2.5
01/02
Mean = 15.4 ug/m3
03/01
![Page 49: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/49.jpg)
Royal Meteorological Institute of Belgium
Aerosol Measurements Campaign at Uccle. RMI December 6th 2006.
1 February 2006
03/0101/02
50 ug/m3
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Royal Meteorological Institute of Belgium
Aerosol Measurements Campaign at Uccle. RMI December 6th 2006.
Photo by A. Delcloo and A. Mangold
smoke
28/01 09/11
50 ug/m3
20 ug/m3
20 ug/m3
50 ug/m3
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Royal Meteorological Institute of Belgium
Aerosol Measurements Campaign at Uccle. RMI December 6th 2006.
Aethalometer
Mass of Black Carbon
![Page 52: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/52.jpg)
Royal Meteorological Institute of Belgium
Aerosol Measurements Campaign at Uccle. RMI December 6th 2006.
Perspectives 1
1. Determination of the relation between AOD, mass, size and type of the particles and the air mass origin
2. Aerosol studies is foreseen within the Antarctic project with BIRA and Ghent University
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Royal Meteorological Institute of Belgium
Aerosol Measurements Campaign at Uccle. RMI December 6th 2006.
Most important perspectives
snoepjes
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Royal Meteorological Institute of Belgium
Aerosol Measurements Campaign at Uccle. RMI December 6th 2006.
The END
![Page 55: Royal Meteorological Institute of Belgium Validation of the method to retrieve the AOD and first preliminary results of the aerosol measurements campaign.](https://reader035.fdocuments.us/reader035/viewer/2022070411/56649f2b5503460f94c45f13/html5/thumbnails/55.jpg)
Royal Meteorological Institute of Belgium
Antarctic project. RMI December 6th 2006.
The antarctic project
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Royal Meteorological Institute of Belgium
Antarctic project. RMI December 6th 2006.
RMI Ozone/UV/aerosol group
BIRA M. Van Roozendael, M. De Mazière , C. Hermans, D. Gillotay, C. Depiesse, C. Muller,D. Bolsee
Ugent W. Maenhaut and J. Cafmeyer
Members of the project