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@INPROCEEDINGS{Betancourt:877351,
      author       = {Betancourt, Clara and Küppers, Christoph and Sager, U. and
                      Hoyer, A. B. and Kaminski, H. and Rapp, G. and Quass, U. and
                      John, A. C. and Küpper, Miriam and Kuhlbusch and
                      Kiendler-Scharr, Astrid and Gensch, Iulia},
      title        = {{F}irewood residential heating - local versus regional
                      influence on the aerosol burden},
      reportid     = {FZJ-2020-02158},
      year         = {2020},
      abstract     = {As a particular form of biomass burning (BB),
                      domesticheating with firewood is a major source of fine dust
                      inthe cold season. Understanding its impact on air
                      qualityrequires reliable aerosol source apportionment
                      andassessment of prevailing loss processes. Further, to
                      establisheffective mitigation policies, it is necessary
                      toaccurately quantify the contribution of local vs.
                      remotesources to the aerosol burden. To this end,
                      source-receptormodelling is employed, such as chemical
                      massbalance or Lagrangian techniques, to calculate
                      concentrationsof the BB specific tracer in aerosol,
                      levoglucosan(Fine et al. 2002, Chunmao et al. 2019). In the
                      lastdecades, it has been shown that combining stable
                      isotoperatios with concentration measurements allows
                      forseparating the impact of chemical degradation fromchanges
                      linked to source strength or atmospherictransport. Based on
                      that, Gensch et al. (2018) developeda numerical approach,
                      comparing stable carbonisotopic ratio and concentration
                      measurements withback trajectory analyses by the Lagrangian
                      particle dispersionmodel FLEXPART (https://www.flexpart.eu/)
                      toinvestigate chemical aging processes in BB aerosol.In the
                      present study, stable carbon isotopes were implementedin the
                      full dispersed output of FLEXPART byexplicitly tracking of
                      the levoglucosan fraction containing13C. Further,
                      sensitivity studies were carried out toexamine the
                      simulation responses to the uncertaintiesof the governing
                      atmospheric processes described inFLEXPART and thus, to
                      determine the model performancefor given conditions.
                      Finally, the set of selectedmodelling routines were applied
                      in a case study with thegoal to assess the contribution of
                      local vs. remotesources of biomass burning emissions from
                      residentialheating to the particulate matter sampled at
                      twomeasurement stations of the North
                      Rhine-WestphaliaEnvironmental Agency, LANUV. Thereby, the
                      measuredlevoglucosan concentration and isotopic composition
                      in50 selected aerosol samples taken at an urbanbackground
                      station in Mülheim-Styrum and at a ruralbackground station
                      in the Eifel, in the cold seasons of2015 - 2017 were
                      compared with the model results.The simulations indicate
                      that the biggest fraction of thesampled aerosol is 1 to 2
                      days old. Chemical aging, alsolimited by low mean OH
                      concentrations in the cold season,has thus a minor influence
                      on the observedlevoglucosan concentration and δ13C (Fig.
                      1). Theexperimental data, interpreted as a two
                      end-membermixing series between
                      low-concentration/isotopicallyheavyback-ground and
                      high-concentration/isotopicallylightfresh emissions, support
                      the model outcome,showing similar isotopic ratios for the
                      two constituents.The high variability in the observed δ13C
                      implies that thelocal levoglucosan emissions are
                      characterized by verydifferent isotopic ratios in the range
                      of -25.3 to -21.4 $\%(Fig.$ 1 in Pdf). These values are in
                      good agreement withprevious studies on levoglucosan source
                      specificisotopic composition in BB aerosol (Sang et al.
                      2012).These findings demonstrate that the aerosol burdenfrom
                      residential heating in living areas is of local originand
                      thus, mitigation is possible through reduction oflocal
                      emissions. In this work we show that combiningLagrangian
                      modelling with isotope ratios is valuable toobtain
                      additional insight in source apportionment.There is, though,
                      a need for a better isotopic descriptionof sources.
                      Moreover, studies investigating long rangetransport of BB
                      aerosol from large-scale fires in the dryseason are
                      essential to examine the role of aging amongother loss
                      processes.Fine, P.M., Cass, G.R. and Simoneit, B.R.T. (2002)
                      J. Geophys.Res., [Atmos.], doi 10.1029/2001jd000661Chunmao,
                      Z., Yugo, K., et al. (2019) Environ. Pollut.,
                      doi10.1016/j.envpol.2019.01.003Gensch, I., Sang, X.F., et
                      al. (2018) Environ. $Sci.\&Tech.,doi$
                      10.1021/acs.est.8b03054Sang, X.F., Gensch, I., et al. (2012)
                      Environ. $Sci.\&Tech.,doi$ 10.1021/ es204094v},
      month         = {Aug},
      date          = {2020-08-30},
      organization  = {European Aerosol Conference 2020,
                       Aachen (Germany), 30 Aug 2020 - 4 Sep
                       2020},
      cin          = {IEK-8 / JSC},
      cid          = {I:(DE-Juel1)IEK-8-20101013 / I:(DE-Juel1)JSC-20090406},
      pnm          = {243 - Tropospheric trace substances and their
                      transformation processes (POF3-243) / 512 - Data-Intensive
                      Science and Federated Computing (POF3-512) / PhD no Grant -
                      Doktorand ohne besondere Förderung (PHD-NO-GRANT-20170405)
                      / Earth System Data Exploration (ESDE)},
      pid          = {G:(DE-HGF)POF3-243 / G:(DE-HGF)POF3-512 /
                      G:(DE-Juel1)PHD-NO-GRANT-20170405 / G:(DE-Juel-1)ESDE},
      typ          = {PUB:(DE-HGF)1},
      url          = {https://juser.fz-juelich.de/record/877351},
}