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@ARTICLE{Lampilahti:902290,
      author       = {Lampilahti, Janne and Manninen, Hanna E. and Nieminen,
                      Tuomo and Mirme, Sander and Ehn, Mikael and Pullinen, Iida
                      and Leino, Katri and Schobesberger, Siegfried and
                      Kangasluoma, Juha and Kontkanen, Jenni and Järvinen, Emma
                      and Väänänen, Riikka and Yli-Juuti, Taina and Krejci,
                      Radovan and Lehtipalo, Katrianne and Levula, Janne and
                      Mirme, Aadu and Decesari, Stefano and Tillmann, Ralf and
                      Worsnop, Douglas R. and Rohrer, Franz and Kiendler-Scharr,
                      Astrid and Petäjä, Tuukka and Kerminen, Veli-Matti and
                      Mentel, Thomas F. and Kulmala, Markku},
      title        = {{Z}eppelin-led study on the onset of new particle formation
                      in the planetary boundary layer},
      journal      = {Atmospheric chemistry and physics},
      volume       = {21},
      number       = {16},
      issn         = {1680-7324},
      address      = {Katlenburg-Lindau},
      publisher    = {EGU},
      reportid     = {FZJ-2021-04153},
      pages        = {12649 - 12663},
      year         = {2021},
      abstract     = {We compared observations of aerosol particle formation and
                      growth in different parts of the planetary boundary layer at
                      two different environments that have frequent new particle
                      formation (NPF) events. In summer 2012 we had a campaign in
                      Po Valley, Italy (urban background), and in spring 2013 a
                      similar campaign took place in Hyytiälä, Finland (rural
                      background). Our study consists of three case studies of
                      airborne and ground-based measurements of ion and particle
                      size distribution from ∼1 nm. The airborne measurements
                      were performed using a Zeppelin inside the boundary layer up
                      to 1000 m altitude. Our observations show the onset of
                      regional NPF and the subsequent growth of the aerosol
                      particles happening almost uniformly inside the mixed layer
                      (ML) in both locations. However, in Hyytiälä we noticed
                      local enhancement in the intensity of NPF caused by
                      mesoscale boundary layer (BL) dynamics. Additionally, our
                      observations indicate that in Hyytiälä NPF was probably
                      also taking place above the ML. In Po Valley we observed NPF
                      that was limited to a specific air mass.},
      cin          = {IEK-8},
      ddc          = {550},
      cid          = {I:(DE-Juel1)IEK-8-20101013},
      pnm          = {2111 - Air Quality (POF4-211)},
      pid          = {G:(DE-HGF)POF4-2111},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000691776500001},
      doi          = {10.5194/acp-21-12649-2021},
      url          = {https://juser.fz-juelich.de/record/902290},
}