Stefanie Falk

Bilde av Stefanie Falk
English version of this page
Telefon +47 22855816
Rom 2426
Treffetider 9-16
Brukernavn
Besøksadresse Blindernveien 31 Kristine Bonnevies hus 0371 OSLO
Postadresse Postboks 1022 Blindern 0315 OSLO

Faglige interesser

  • Kjemi/klima modelleringer
    • OsloCTM3
    • WRF-chem
    • EMAC
  • Stratosfærisk/troposfærisk ozon
    • Vegetasjon-ozon interaksjon ved klimaendringer
    • Ozon tørr avsetning
    • Very short-lived ozone depleting substances (VSLS)
    • Arktik grenselag: brom utbrudd og reduksjon av ozon

Bakgrunn

  • Jan 2018 – nåværende: Postdoktor, Institutt for geofag, Universitetet i Oslo
    • Modellering av ozon påført skade på vegetasjon i Nord-Skandinavia ved klimaendringer i OsloCTM3, WRF, Do3SE.
  • 2015 – 2017: PostDoc, Karlsruhe Institute of Technology
    • Simuleringer av interaksjon av klimaprosesser og atmosfærisk kjemi ved bruk av klimamodellen (kjemi) EMAC (ECHAM/MESSy).
    • Analyser av aspekter av fremtidig påvirkning av bromerte VSLS på reduksjon av ozon.
    • Modellering av brom utbrudd i Arktis innenfor rammeverket av EMAC og sammenlikning av in-situ ozon og BrO målt fra satellitter.
  • 2014: Ph.d. i Astropartikkel fysikk, Karlsruhe Institute of Technology
  • 2011: Diplom i fysikk, Karlsruhe

Annet tillitsverv

  • Nestleder i UiODoc, forening for stipendiater og postdoktorander på Universitet i Oslo (Mai 2018 - dag i dag)

Finn meg på LinkedIn

Emneord: Atmosfærekjemi, Modellering, Klimaeffekt, Ozon

Publikasjoner

Update and evaluation of the ozone dry deposition in Oslo CTM3 v1.0

Publication date Nov 08 2019 Geosci. Model Dev.

Abstract High concentrations of ozone in ambient air are hazardous to the whole ecosystem. The impact of ozone-induced damage on vegetation and agricultural plants in combination with advancing climate change may affect food security in the future. The process of dry deposition is important for predicting and understanding the observed surface ozone concentrations. We have updated the dry deposition scheme in Oslo CTM3 to a more process-based parameterization and assess the effect on modeled ozone.

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Polar boundary layer bromine explosion and ozone depletion events in the chemistry–climate model EMAC v2.52: implementation and evaluation of AirSnow algorithm

Publication date Mar 28 2018 Geosci. Model Dev.

Abstract Ozone depletion events (ODE) in the polar boundary layer are observed frequently in spring. ODE serve as source of tropospheric BrO at high latitudes. A treatment of bromine release and recycling on sea ice and snow covered surfaces has been implemented in global chemistry-climate model EMAC based on scheme of Toyota et al. (2011). Many aspects of bromine enhancement and associated ODE are reproduced in both polar regions. Further bromine release mechanisms can now be tested in a global model.

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Brominated VSLS and their influence on ozone under a changing climate

Publication date Sep 25 2017 Atmospheric Chemistry and Physics

Abstract Brominated very short-lived source gases (VSLS) contribute significantly to the tropospheric and stratospheric bromine loading. We find an increase of future ocean-atmosphere flux of brominated VSLS of 8–10 % compared to present day. A decrease in the tropospheric mixing ratios of VSLS and an increase in the lower stratosphere are attributed to changes in atmospheric chemistry and transport. Bromine impact on stratospheric ozone at the end of the 21st century is reduced compared to present day.

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  • Falk, Stefanie & Søvde, Ole Amund (2019). Update and evaluation of the ozone dry deposition in Oslo CTM3 v1.0. Geoscientific Model Development.  ISSN 1991-959X.  12(11), s 4705- 4728 . doi: 10.5194/gmd-12-4705-2019 Fulltekst i vitenarkiv. Vis sammendrag
  • Falk, Stefanie (2020). Ongoing work in Double Punch Ozone Damage – OzoneLUNA – Crowberry PFT.
  • Falk, Stefanie & Vollsnes, Ane Victoria (2020). Introduction of a new plant functional type in CLM/FATES: Arctic Evergreen (dwarf-)shrub.
  • Falk, Stefanie; Vollsnes, Ane Victoria; Stordal, Frode; Eriksen, Aud Else Berglen & Berntsen, Terje Koren (2020). Surface Ozone in Northern Scandinavia and Implications on Local Vegetation - A Case Study. Vis sammendrag
  • Vollsnes, Ane Victoria; Falk, Stefanie; Eriksen, Aud Berglen; Kapperud, Åshild Fandango; Kauserud, Håvard; Stordal, Frode & Berntsen, Terje Koren (2020). Responses to experimental ozone exposure in some native plant species from Northern Scandinavia.
  • Vollsnes, Ane Victoria; Falk, Stefanie; Eriksen, Aud Else Berglen; Stordal, Frode; Kauserud, Håvard; Berntsen, Terje Koren; Emberson, Lisa D.; O’Neill, Connie & Lombardozzi, Danica (2020). The double punch: ozone and climate stresses on vegetation.
  • Byre, Hanne Eline; Falk, Stefanie; Stordal, Frode & Berntsen, Terje Koren (2019). An Investigation of Source Regions Contributing to the Deposition of Reactive Nitrogen in Arctic and Boreal Areas. Vis sammendrag
  • Falk, Stefanie; Stordal, Frode & Vollsnes, Ane Victoria (2019). Ozon und seine Auswirkungen auf die Vegetation in Nordskandinavien. Vis sammendrag
  • Stordal, Frode; Berntsen, Terje Koren; Büker, Patrick; Falk, Stefanie; Rydsaa, Johanne Hope; Gillies, David & Vollsnes, Ane Victoria (2018). Ozone and climate stresses on sub-ARctic tundra vegetation: Modelling of stomatal fluxes in midnight sun.
  • Vollsnes, Ane Victoria; Eriksen, Aud Berglen; Büker, Patrick; Kauserud, Håvard; Falk, Stefanie & Stordal, Frode (2018). Ozone stress on sub-Arctic tundra vegetation: ozone exposure experiments with daylength manipulation..
  • Vollsnes, Ane Victoria; Eriksen, Aud Berglen; Falk, Stefanie; Berntsen, Terje Koren; Kauserud, Håvard; Emberson, Lisa D. & Stordal, Frode (2018). Project The double punch: ozone and climate stresses on vegetation.
  • Vollsnes, Ane Victoria; Eriksen, Aud Berglen; Falk, Stefanie; Bryn, Anders; Viken, Jeanette & Stordal, Frode (2018). Ozonforurensning. Klima, vegetasjon og matproduksjon.
Publisert 10. jan. 2018 16:10 - Sist endret 29. juni 2020 10:53