PARTICULATE MATTER AND BLACK CARBON DURING THE BIOMASS BURNING SEASON IN THE LLANOS SAVANNAS Juliana Hernández, Luis Morales, Rodrigo Jiménez Air Quality Research Group Department of Chemical and Environmental Engineering Universidad Nacional de Colombia
16
Embed
PARTICULATE MATTER AND BLACK CARBON DURING THE BIOMASS BURNING … › polopoly_fs › 1.143283! › Session2_4_PM... · 2019-01-02 · PARTICULATE MATTER AND BLACK CARBON DURING
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
PARTICULATE MATTER AND BLACK CARBON DURING THE
BIOMASS BURNING SEASON IN THE LLANOS SAVANNAS
Juliana Hernández, Luis Morales, Rodrigo Jiménez
Air Quality Research GroupDepartment of Chemical and Environmental Engineering
Universidad Nacional de Colombia
Grupo de Investigación en Calidad del Aire Facultad de ingeniería –Sede Bogotá
Biomass burning in the Llanos Region
• Periodic biomass burning (natural and
anthropogenic)
• Biomass burning emitted particles: Genotoxic
effects on human alveolar cells (de Oliveira Alves
et al., 2014)
• Burned area, just Colombian Llanos: 2.75
Mha/year
(Romero-Ruiz et al., 2010)
WHAT IS THE AIR QUALITY IMPACT OF EMISSIONS FROM BIOMASS
BURNING IN THE COLOMBIAN ORINOCO SAVANNAS?
Active fires during 2016-2017 dry season and back
trajectories (Hysplit model) for January 5, 2017 from Yopal,
Arauca and Villavicencio
Grupo de Investigación en Calidad del Aire Facultad de ingeniería –Sede Bogotá
• Two measurement campaigns
• Chemical composition of PM
• Analysis of PM and O3 measurements in Arauca and Yopal
Evidences of the impact of fire emission in the Orinoco region’s air quality
• Development of a methodologyappropiate for biomass burningemissions for atmosphericmodeling
Emission inventory
• Meteorological simulations usingWRF
• Backward Lagrangian modeling
Contribution of fire emissions to atmospheric PM levels
Methodology
Grupo de Investigación en Calidad del Aire Facultad de ingeniería – Sede Bogotá
Active fires during measurement campaigns
MC1 MC3
MC2
MC1 MC2 MC3 Moderate biomass burning Intense biomass burning Effect of biomass burning in Venezuela
Baseline
Grupo de Investigación en Calidad del Aire Facultad de ingeniería – Sede Bogotá
Measurement campaign #1� Beginning of the dry season
Grupo de Investigación en Calidad del Aire Facultad de ingeniería – Sede Bogotá
0
0.2
0.4
0.6
0.8
ma
r-2
3 0
7
ma
r-2
3 1
0
ma
r-2
3 1
1
ma
r-2
3 1
4
ma
r-2
3 1
6
ma
r-2
4 0
9
ma
r-2
4 1
0
ma
r-2
4 1
2
ma
r-2
4 1
4
ma
r-2
4 1
5
ma
r-2
4 1
6Ae
roso
l op
tica
l d
ep
th
AOD Total_500nm AOD Fine mode_500nm AOD coarse mode _500 nm
0
0.2
0.4
0.6
0.8
ma
y-2
6 0
8
ma
y-2
6 1
5
ma
y-2
6 1
6
ma
y-2
9 1
5
jun
-01
12
jun
-06
16
jun
-10
14
jun
-12
15
jun
-12
16
jun
-19
07
jun
-20
09
jun
-23
16
jun
-24
07
jun
-24
16
jun
-30
16
jul-
01
15
jul-
02
15
jul-
03
14
jul-
08
06
jul-
08
13
jul-
08
16
jul-
09
06
jul-
09
14Ae
roso
l op
tica
l d
ep
th
Simultaneous measurements of Aerosol Optical Depth and PM10
PM10: 27.4 µg/m³
• Photometer – AERONET station (UNC-Gaitan)
• PM10 sampler – Taluma station - March 21st – March
24th
Bogotá-2013
0.3
UNC-Gaitan
Grupo de Investigación en Calidad del Aire Facultad de ingeniería – Sede Bogotá
Measurement campaign #2: intense biomass burning period
Taluma
18.1 ± 2.9 µg/m³
43.6± 9.9 µg/m³
34.2± 6.5 µg/m³
Feb. 3rd
Libertad Taluma
42.7 µg/m³ 68.8 µg/m³
Enhancement: 21 µg/m³
Enhancement: 26 µg/m³
Maximum
concentrations
December: Low biomass burning activity
Grupo de Investigación en Calidad del Aire Facultad de ingeniería – Sede Bogotá
Chemical composition of PM10: biomass burning tracers
High correlation between PM10, BC and K + constitutes a strong evidence of the influence ofbiomass burning emissions in PM10 levels
CONCENTRATIONS IN THE LLANOS VS. BOGOTA
Group Period
Libertad_ECALB1a1 December 12-18, 2014
Low impact of fire and soil dust
emissions
Taluma_ECALB2a1 December 15-19, 2015
Low impact of fire and soil dust
emissions
Taluma_ECALB2a December 14-15, December 19-21,
2015
Low impact of fire emissions. Some
impact of soil dust emissions.
Libertad_ECALB1 January 20 – February 16, 2015
BB & Soil dust
Libertad_ECALB2 January 25- February 13, 2016
BB & Soil dust
Taluma_ECALB2 BB & Soil dust
Bog_DS
Bogotá – Universidad Libre
(Ramírez et al., 2018)
Urban background site.Dry season
Bog_DS2
(Suba)(Vargas et al., 2012)
Commercial activities and paved and
unpaved roads
Bog_RS
Bogotá (Ramírez et al., 2018)
Urban background site.Rainy seaon
Grupo de Investigación en Calidad del Aire Facultad de ingeniería – Sede Bogotá
Fire and dust emissions
Fire-driven emissions of mineral dust
(Wagner et al., 2018)
Taluma
ECALB2
Libertad
ECALB1
Grupo de Investigación en Calidad del Aire Facultad de ingeniería – Sede Bogotá
CONCLUSIONS
• Air quality in the Llanos region significantly deteriorates during the biomass burning period.
• PM10 levels are substantially increased during the biomass burning period. Concentrations with little fire activity range between 11-17 µg/m³. During intense biomass burning there were concentrations up to 68 µg/m³, and enhancements on average concentrations that range from 23 – 26 µg/m³.
• PM10 enhancements were closely related enhancements of biomass burning tracers (BC, K+) and dust tracers.
Grupo de Investigación en Calidad del Aire Facultad de ingeniería – Sede Bogotá
AKCNOWLEDGEMENTS
• This research was funded by Colciencias (Grant number1101-569-35161) and Universidad Nacional de Colombia
• Corpoica and Grupo ALIAR for their logistic supportduring the measurement campaigns.
THANKS FOR YOUR ATTENTION
Grupo de Investigación en Calidad del Aire Facultad de ingeniería – Sede Bogotá