% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Yessimbet:917179,
      author       = {Yessimbet, Kamilya and Shepherd, Theodore G. and Ossó,
                      Albert C. and Steiner, Andrea K.},
      title        = {{P}athways of {I}nfluence {B}etween {N}orthern {H}emisphere
                      {B}locking and {S}tratospheric {P}olar {V}ortex
                      {V}ariability},
      journal      = {Geophysical research letters},
      volume       = {49},
      number       = {23},
      issn         = {0094-8276},
      address      = {Hoboken, NJ},
      publisher    = {Wiley},
      reportid     = {FZJ-2023-00411},
      pages        = {e2022GL100895},
      year         = {2022},
      abstract     = {We apply a causal inference-based framework to test and
                      quantify previously suggested causalrelationships between
                      Northern Hemisphere blocking, upward wave-activity fluxes
                      and stratospheric polarvortex (SPV) variability using
                      reanalysis data. We show that the influence of blocking on
                      the polar vortex isentirely mediated by upward wave-activity
                      fluxes, as the classical view would suggest. However, the
                      causalpathway is not completely straightforward. In contrast
                      to the vortex-weakening effect of European blocking,the
                      vortex-strengthening effect of west Pacific blocking on
                      lower stratospheric wave-activity fluxes is onlypartially
                      mediated by upper tropospheric wave-activity fluxes. In
                      addition, only two-thirds of the effectof upper tropospheric
                      wave-activity fluxes on polar vortex variability is mediated
                      by lower stratosphericwave-activity fluxes. We also show
                      that sudden stratospheric warmings are not entirely
                      explainable in terms ofupward wave-activity fluxes. These
                      findings help clarify the pathways of influence between
                      blocking and SPVvariability.},
      cin          = {JSC / IEK-7},
      ddc          = {550},
      cid          = {I:(DE-Juel1)JSC-20090406 / I:(DE-Juel1)IEK-7-20101013},
      pnm          = {5111 - Domain-Specific Simulation $\&$ Data Life Cycle Labs
                      (SDLs) and Research Groups (POF4-511) / 2112 - Climate
                      Feedbacks (POF4-211)},
      pid          = {G:(DE-HGF)POF4-5111 / G:(DE-HGF)POF4-2112},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000928052000028},
      doi          = {10.1029/2022GL100895},
      url          = {https://juser.fz-juelich.de/record/917179},
}