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Atmospheric Chemistry and Physics (ACP)
Other literature type . Article . 2017 . Peer-reviewed
License: CC BY
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Atmospheric Chemistry and Physics (ACP)
Article . Preprint . 2017
License: CC BY
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https://doi.org/10.5194/acp-20...
Preprint . 2017
License: CC BY
Data sources: Crossref
Hal-Diderot
Article . 2017
Data sources: Hal-Diderot
Hyper Article en Ligne; Hal-Diderot
Other literature type . Conference object . 2017
Hyper Article en Ligne; Hal-Diderot
Other literature type . Conference object . 2017
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Cross-polar transport and scavenging of Siberian aerosols containing black carbon during the 2012 ACCESS summer campaign

Authors: Jean-Christophe Raut; Louis Marelle; Jerome D. Fast; Jennie L. Thomas; Bernadett Weinzierl; Katharine S. Law; Larry K. Berg; +6 Authors

Cross-polar transport and scavenging of Siberian aerosols containing black carbon during the 2012 ACCESS summer campaign

Abstract

During the ACCESS airborne campaign in July 2012, extensive boreal forest fires resulted in significant aerosol transport to the Arctic. A 10-day episode combining intense biomass burning over Siberia and low-pressure systems over the Arctic Ocean resulted in efficient transport of plumes containing black carbon (BC) towards the Arctic, mostly in the upper troposphere (6–8 km). A combination of in situ observations (DLR Falcon aircraft), satellite analysis and WRF-Chem simulations is used to understand the vertical and horizontal transport mechanisms of BC with a focus on the role of wet removal. Between the northwestern Norwegian coast and the Svalbard archipelago, the Falcon aircraft sampled plumes with enhanced CO concentrations up to 200 ppbv and BC mixing ratios up to 25 ng kg−1. During transport to the Arctic region, a large fraction of BC particles are scavenged by two wet deposition processes, namely wet removal by large-scale precipitation and removal in wet convective updrafts, with both processes contributing almost equally to the total accumulated deposition of BC. Our results underline that applying a finer horizontal resolution (40 instead of 100 km) improves the model performance, as it significantly reduces the overestimation of BC levels observed at a coarser resolution in the mid-troposphere. According to the simulations at 40 km, the transport efficiency of BC (TEBC) in biomass burning plumes was larger (60 %), because it was impacted by small accumulated precipitation along trajectory (1 mm). In contrast TEBC was small (< 30 %) and accumulated precipitation amounts were larger (5–10 mm) in plumes influenced by urban anthropogenic sources and flaring activities in northern Russia, resulting in transport to lower altitudes. TEBC due to large-scale precipitation is responsible for a sharp meridional gradient in the distribution of BC concentrations. Wet removal in cumulus clouds is the cause of modeled vertical gradient of TEBC, especially in the mid-latitudes, reflecting the distribution of convective precipitation, but is dominated in the Arctic region by the large-scale wet removal associated with the formation of stratocumulus clouds in the planetary boundary layer (PBL) that produce frequent drizzle.

Countries
Austria, France
Subjects by Vocabulary

Microsoft Academic Graph classification: Convection Taiga Atmospheric sciences Aerosol Troposphere Deposition (aerosol physics) Climatology Environmental science Polar Precipitation Scavenging

Library of Congress Subject Headings: lcsh:QC1-999 lcsh:Chemistry lcsh:QD1-999 lcsh:Physics

Keywords

[SDE] Environmental Sciences, [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], Atmospheric Science, [PHYS.PHYS.PHYS-AO-PH] Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], [SDE]Environmental Sciences

  • BIP!
    Impact byBIP!
    citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    23
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Top 10%
  • citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    23
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Top 10%
    Powered byBIP!BIP!
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
23
Top 10%
Average
Top 10%
Green
gold
Funded by
EC| ERA-PLANET
Project
ERA-PLANET
The European network for observing our changing planet
  • Funder: European Commission (EC)
  • Project Code: 689443
  • Funding stream: H2020 | ERA-NET-Cofund
Validated by funder
,
EC| ACCESS
Project
ACCESS
Arctic Climate Change, Economy and Society
  • Funder: European Commission (EC)
  • Project Code: 265863
  • Funding stream: FP7 | SP1 | TPT
iis
,
EC| A-LIFE
Project
A-LIFE
Absorbing aerosol layers in a changing climate: aging, lifetime and dynamics
  • Funder: European Commission (EC)
  • Project Code: 640458
  • Funding stream: H2020 | ERC | ERC-STG
Validated by funder | iis
Related to Research communities
Sustainable Development Solutions Network - Greece
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