Transport of biomass burning smoke to the upper troposphere by deep convection in the equatorial region

M. O. Andreae; P. Artaxo; H. Fischer; S. R. Freitas; J.-M. Grégoire; A. Hansel; P. Hoor; R. Kormann; R. Krejci; L. Lange; J. Lelieveld; W. Lindinger; K. Longo; W. Peters; M. de Reus; B. Scheeren; M. A. F. Silva Dias; J. Ström; P. F. J. van Velthoven; J. Williams

doi:10.1029/2000GL012391

Transport of biomass burning smoke to the upper troposphere by deep convection in the equatorial region

M. O. Andreae, P. Artaxo, H. Fischer, S. R. Freitas, J.-M. Grégoire, A. Hansel, P. Hoor, R. Kormann, R. Krejci, L. Lange, J. Lelieveld, W. Lindinger, K. Longo, W. Peters, M. de Reus, B. Scheeren, M. A. F. Silva Dias, J. Ström, P. F. J. van Velthoven, J. Williams

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Abstract

During LBA-CLAIRE-98, we found atmospheric layers with aged biomass smoke at altitudes >10 km over Suriname. CO, CO2, acetonitrile, methyl chloride, hydrocarbons, NO, O3, and aerosols were strongly enhanced in these layers. We estimate that 80-95% of accumulation mode aerosols had been removed during convective transport. Trajectories show that the plumes originated from large fires near the Brazil/Venezuela border during March 1998. This smoke was entrained into deep convection over the northern Amazon, transported out over the Pacific, and then returned to South America by the circulation around a large upper-level anticyclone. Our observations provide evidence for the importance of deep convection in the equatorial region as a mechanism to transport large amounts of pyrogenic pollutants into the upper troposphere. The entrainment of biomass smoke into tropical convective clouds may have significant effects on cloud microphysics and climate dynamics.

Original language	English
Pages (from-to)	951-954
Journal	Geophysical research letters
Volume	28
Issue number	6
DOIs	https://doi.org/10.1029/2000GL012391
Publication status	Published - 15-Mar-2001
Externally published	Yes

Keywords

Atmospheric Composition and Structure
Atmospheric Composition and Structure: Troposphere-constituent transport and chemistry
TROPICAL SOUTH-ATLANTIC
ATMOSPHERIC CHEMISTRY
SAVANNA FIRES
EMISSIONS
OZONE
AIRBORNE
AFRICA
PLUMES
BASIN
co

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Andreae, M. O., Artaxo, P., Fischer, H., Freitas, S. R., Grégoire, J.-M., Hansel, A., Hoor, P., Kormann, R., Krejci, R., Lange, L., Lelieveld, J., Lindinger, W., Longo, K., Peters, W., de Reus, M., Scheeren, B., Silva Dias, M. A. F., Ström, J., van Velthoven, P. F. J., & Williams, J. (2001). Transport of biomass burning smoke to the upper troposphere by deep convection in the equatorial region. Geophysical research letters, 28(6), 951-954. https://doi.org/10.1029/2000GL012391

@article{a1c9910b00144f0d88e040cd3d9786c4,

title = "Transport of biomass burning smoke to the upper troposphere by deep convection in the equatorial region",

abstract = "During LBA-CLAIRE-98, we found atmospheric layers with aged biomass smoke at altitudes >10 km over Suriname. CO, CO2, acetonitrile, methyl chloride, hydrocarbons, NO, O3, and aerosols were strongly enhanced in these layers. We estimate that 80-95% of accumulation mode aerosols had been removed during convective transport. Trajectories show that the plumes originated from large fires near the Brazil/Venezuela border during March 1998. This smoke was entrained into deep convection over the northern Amazon, transported out over the Pacific, and then returned to South America by the circulation around a large upper-level anticyclone. Our observations provide evidence for the importance of deep convection in the equatorial region as a mechanism to transport large amounts of pyrogenic pollutants into the upper troposphere. The entrainment of biomass smoke into tropical convective clouds may have significant effects on cloud microphysics and climate dynamics.",

keywords = "Atmospheric Composition and Structure, Atmospheric Composition and Structure: Troposphere-constituent transport and chemistry, TROPICAL SOUTH-ATLANTIC, ATMOSPHERIC CHEMISTRY, SAVANNA FIRES, EMISSIONS, OZONE, AIRBORNE, AFRICA, PLUMES, BASIN, co",

author = "Andreae, {M. O.} and P. Artaxo and H. Fischer and Freitas, {S. R.} and J.-M. Gr{\'e}goire and A. Hansel and P. Hoor and R. Kormann and R. Krejci and L. Lange and J. Lelieveld and W. Lindinger and K. Longo and W. Peters and {de Reus}, M. and B. Scheeren and {Silva Dias}, {M. A. F.} and J. Str{\"o}m and {van Velthoven}, {P. F. J.} and J. Williams",

year = "2001",

month = mar,

day = "15",

doi = "10.1029/2000GL012391",

language = "English",

volume = "28",

pages = "951--954",

journal = "Geophysical research letters",

issn = "0094-8276",

publisher = "AMER GEOPHYSICAL UNION",

number = "6",

}

Andreae, MO, Artaxo, P, Fischer, H, Freitas, SR, Grégoire, J-M, Hansel, A, Hoor, P, Kormann, R, Krejci, R, Lange, L, Lelieveld, J, Lindinger, W, Longo, K, Peters, W, de Reus, M, Scheeren, B, Silva Dias, MAF, Ström, J, van Velthoven, PFJ & Williams, J 2001, 'Transport of biomass burning smoke to the upper troposphere by deep convection in the equatorial region', Geophysical research letters, vol. 28, no. 6, pp. 951-954. https://doi.org/10.1029/2000GL012391

TY - JOUR

T1 - Transport of biomass burning smoke to the upper troposphere by deep convection in the equatorial region

AU - Andreae, M. O.

AU - Artaxo, P.

AU - Fischer, H.

AU - Freitas, S. R.

AU - Grégoire, J.-M.

AU - Hansel, A.

AU - Hoor, P.

AU - Kormann, R.

AU - Krejci, R.

AU - Lange, L.

AU - Lelieveld, J.

AU - Lindinger, W.

AU - Longo, K.

AU - Peters, W.

AU - de Reus, M.

AU - Scheeren, B.

AU - Silva Dias, M. A. F.

AU - Ström, J.

AU - van Velthoven, P. F. J.

AU - Williams, J.

PY - 2001/3/15

Y1 - 2001/3/15

N2 - During LBA-CLAIRE-98, we found atmospheric layers with aged biomass smoke at altitudes >10 km over Suriname. CO, CO2, acetonitrile, methyl chloride, hydrocarbons, NO, O3, and aerosols were strongly enhanced in these layers. We estimate that 80-95% of accumulation mode aerosols had been removed during convective transport. Trajectories show that the plumes originated from large fires near the Brazil/Venezuela border during March 1998. This smoke was entrained into deep convection over the northern Amazon, transported out over the Pacific, and then returned to South America by the circulation around a large upper-level anticyclone. Our observations provide evidence for the importance of deep convection in the equatorial region as a mechanism to transport large amounts of pyrogenic pollutants into the upper troposphere. The entrainment of biomass smoke into tropical convective clouds may have significant effects on cloud microphysics and climate dynamics.

AB - During LBA-CLAIRE-98, we found atmospheric layers with aged biomass smoke at altitudes >10 km over Suriname. CO, CO2, acetonitrile, methyl chloride, hydrocarbons, NO, O3, and aerosols were strongly enhanced in these layers. We estimate that 80-95% of accumulation mode aerosols had been removed during convective transport. Trajectories show that the plumes originated from large fires near the Brazil/Venezuela border during March 1998. This smoke was entrained into deep convection over the northern Amazon, transported out over the Pacific, and then returned to South America by the circulation around a large upper-level anticyclone. Our observations provide evidence for the importance of deep convection in the equatorial region as a mechanism to transport large amounts of pyrogenic pollutants into the upper troposphere. The entrainment of biomass smoke into tropical convective clouds may have significant effects on cloud microphysics and climate dynamics.

KW - Atmospheric Composition and Structure

KW - Atmospheric Composition and Structure: Troposphere-constituent transport and chemistry

KW - TROPICAL SOUTH-ATLANTIC

KW - ATMOSPHERIC CHEMISTRY

KW - SAVANNA FIRES

KW - EMISSIONS

KW - OZONE

KW - AIRBORNE

KW - AFRICA

KW - PLUMES

KW - BASIN

KW - co

U2 - 10.1029/2000GL012391

DO - 10.1029/2000GL012391

M3 - Article

SN - 0094-8276

VL - 28

SP - 951

EP - 954

JO - Geophysical research letters

JF - Geophysical research letters

IS - 6

ER -

Transport of biomass burning smoke to the upper troposphere by deep convection in the equatorial region

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Keywords

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