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  • E-mailnil.irvali@uib.no
  • Phone+47 55 58 81 16
  • Visitor Address
    Allégaten 41
    Realfagbygget
    5007 Bergen
    Room 
    3A13d - 3113d
  • Postal Address
    Postboks 7803
    5020 Bergen

My research focuses on improving our understanding of past changes in properties and intensity of Nordic Seas overflows and their relationship to climate and surface ocean hydrography on decadal-centennial timescales during warm and warmer-than-present climate states. I work with an array of proxy methodologies including stable isotopes (planktonic and benthic d18O and d13C), ice-rafted debris (IRD) counts, tephra counts, foraminiferal assemblages, sea surface temperature reconstructions using both the Mg/Ca paleothermomery and transfer function techniques (e.g., MAT), applied on a variety of IMAGES, Ocean Drilling Program (ODP) and International Ocean Discovery Program (IODP) cores, particularly from the North Atlantic sedimentary drift sites (e.g., Eirik and Gardar Drifts).

Academic article
  • Show author(s) (2022). Revised ΔR values for the Barents Sea and its archipelagos as a pre-requisite for accurate and robust marine-based 14C chronologies. Quaternary Geochronology. 17 pages.
  • Show author(s) (2022). Deep submarine infiltration of altered geothermal groundwater on the south Chilean Margin. Communications Earth & Environment.
  • Show author(s) (2020). Interglacial instability of North Atlantic Deep Water ventilation. Science. 1485-1489.
  • Show author(s) (2020). A low climate threshold for south Greenland Ice Sheet demise during the Late Pleistocene. Proceedings of the National Academy of Sciences of the United States of America. 190-195.
  • Show author(s) (2019). Asynchronous Antarctic and Greenland ice-volume contributions to the last interglacial sea-level highstand. Nature Communications.
  • Show author(s) (2017). Environmental Controls on Mg/Ca in Neogloboquadrina incompta: A Core-Top Study From the Subpolar North Atlantic. Geochemistry Geophysics Geosystems. 4276-4298.
  • Show author(s) (2016). Evidence for regional cooling, frontal advances, and East Greenland Ice Sheet changes during the demise of the last interglacial. Quaternary Science Reviews. 184-199.
  • Show author(s) (2015). Deep Atlantic variability during the last interglacial period. Past Global Changes Magazine. 20-21.
  • Show author(s) (2014). Rapid reductions in North Atlantic Deep Water during the peak of the last Interglacial period. Science. 1129-1132.
  • Show author(s) (2012). Rapid switches in subpolar North Atlantic hydrography and climate during the Last Interglacial (MIS 5e). Paleoceanography. 16 pages.
Academic lecture
  • Show author(s) (2022). Reconstructing natural variability of Atlantic Water inflow through the Holocene .
  • Show author(s) (2022). Labrador Sea paleoceanography and paleodiversity across the Last Interglacial.
  • Show author(s) (2022). Climate thresholds for south Greenland Ice Sheet demise: lessons from late Pleistocene interglacials .
  • Show author(s) (2021). Reconstructing natural variability of Atlantic Water inflow through the Holocene.
  • Show author(s) (2019). Variability in ocean ventilation during recent interglacial periods.
  • Show author(s) (2019). Variability in North Atlantic Deep Water Ventilation During Late Pleistocene Interglacials.
  • Show author(s) (2019). East Greenland Ice Sheet variability and thresholds through late Pleistocene interglacials .
  • Show author(s) (2018). North Atlantic Deep Water reductions a persistent feature of the last five interglacial periods.
  • Show author(s) (2018). East Greenland Ice Sheet variability and thresholds through late Pleistocene interglacials .
  • Show author(s) (2017). Resolving the phasing and forcing dynamics between North Atlantic climate and deep ocean circulation changes .
  • Show author(s) (2016). Natural variability in Nordic Seas overflows: Toward a mechanistic understanding of proxy records.
  • Show author(s) (2015). Subpolar gyre changes from the penultimate glaciation to glacial inception and their relationship to Nordic Seas exchanges.
  • Show author(s) (2015). Nordic Seas Overflows and Climate Variability Trough the Holocene.
  • Show author(s) (2015). Multiproxy evidence for Climate and North Atlantic Deep Water variability spanning the last two millennia.
  • Show author(s) (2015). Deep Atlantic circulation during the last interglacial period.
  • Show author(s) (2014). Rapid reductions in North Atlantic Deep Water during the last interglacial period.
  • Show author(s) (2014). North Atlantic Deep Water variability during the last two interglacial periods.
  • Show author(s) (2013). Rapid switches in subpolar North Atlantic hydrography and climate during the Last Interglacial (MIS 5e).
  • Show author(s) (2012). Reductions in North Atlantic Deep Water in a warmer climate—lessons from the last interglacial.
  • Show author(s) (2012). Rapid reductions in North Atlantic Deep Water during the last interglacial period and their relationship to Greenland Ice Sheet variability.
  • Show author(s) (2012). Nordic Seas overflows—the last two millennia.
  • Show author(s) (2012). 8.2 kyr-like deep ocean circulation changes during the last interglacial.
  • Show author(s) (2011). Rapid centennial scale reductions in North Atlantic Deep Water during the peak of the last interglacial period.
  • Show author(s) (2011). Rapid centennial scale reductions in North Atlantic Deep Water during the peak of the last interglacial period.
  • Show author(s) (2011). Rapid centennial scale reductions in North Atlantic Deep Water during the peak of the last interglacial period.
  • Show author(s) (2011). Rapid centennial scale reductions in North Atlantic Deep Water during the peak of the last interglacial period.
  • Show author(s) (2011). Abrupt changes in North Atlantic climate and hydrography and their relationship to Greenland Ice Sheet variability during the penultimate interglacial (MIS 5e).
  • Show author(s) (2011). Abrupt changes in North Atlantic climate and hydrography and their relationship to Greenaldn ice sheet variability during the penultimate interglacial (MIS 5e).
  • Show author(s) (2010). RG 1 Past warm climate.
  • Show author(s) (2010). Abrupt Changes in North Atlantic Climate and Hydrography and Their Relationship to Deep Ocean Ventilation During the Penultimate Interglacial (MIS 5e).
Doctoral dissertation
  • Show author(s) (2012). The relationship between climate, the Greenland Ice Sheet and Iceland-Scotland Overflow Water during the Penultimate Interglacial (MIS 5e).
Poster
  • Show author(s) (2022). Holocene natural variability in Atlantic Water inflow properties to the Arctic.
  • Show author(s) (2022). Abrupt deglacial variations in the properties and vigor of the Atlantic Water inflow to the Arctic.
  • Show author(s) (2021). Variability in Atlantic Water inflow into the Arctic Ocean since the deglaciation.
  • Show author(s) (2021). Natural variability in the Atlantic Water inflow to the Arctic during the last deglaciation.
  • Show author(s) (2019). Asynchronous Antarctic and Greenland ice-volume contributions to the last interglacial sea-level highstand.
  • Show author(s) (2019). A low climate threshold for south Greenland Ice Sheet demise during the late Pleistocene.
  • Show author(s) (2017). Centennial-millennial scale variations in Western Antarctic Ice Sheet discharge and their relationship to climate and ocean changes during the late Holocene.
  • Show author(s) (2017). Assessing linkages between ice sheet calving, subpolar gyre density and deep water ventilation during the last glaciation .
  • Show author(s) (2016). Thresholds for destabilizing thermohaline circulation and ocean carbon cycling in a warmer world (THRESHOLDS).
  • Show author(s) (2016). Resolving the phasing and forcing dynamics between North Atlantic climate and deep ocean circulation changes .
  • Show author(s) (2014). Ocean Drilling Program (ODP) Site 1233, SE Pacific Ocean: paleoclimatic reconstructions over Antarctic warming event 1.
  • Show author(s) (2013). Multi-proxy evidence for changes in subpolar North Atlantic surface ocean hydrography and climate during the last interglacial.
  • Show author(s) (2013). Interglacial deep ocean instability.
  • Show author(s) (2012). Rapid reductions in North Atlantic Deep Water during the last interglacial and their relationship to the Greenland ice sheet.
  • Show author(s) (2012). Rapid reductions in North Atlantic Deep Water during the last interglacial and their relationship to the Greenland ice sheet.
  • Show author(s) (2012). New sedimentary constraints for changes in Iceland-Scotland Overflow Water linked to North Atlantic climate variability during the last interglacial period.
  • Show author(s) (2012). New sedimentary constraints for changes in Iceland-Scotland Overflow Water linked to North Atlantic climate variability during the last interglacial period.
  • Show author(s) (2012). Large centennial-scale North Atlantic Deep Water reductions during the peak of the last interglacial period.
  • Show author(s) (2011). Abrupt changes in North Atlantic Climate and hydrography and their relationship to deep ocean ventilation during the penultimate interglacial (MIS 5e).
  • Show author(s) (2010). The relationship between North Atlantic Deep Water (NADW), climate, and the Greenland Ice Sheet during the Penultimate Interglacial (MIS 5e).
  • Show author(s) (2010). Rapid Centennial Scale Reductions in North Atlantic Deep Water During the Peak of the Last Interglacial Period.
  • Show author(s) (2009). The Relationship between North Atlantic Deep Water (NADW), climate and the Greenland Ice Sheet during the Penultimate Interglacial (MIS 5e).

More information in national current research information system (CRIStin)

Current projects:

Dynamics of the North Atlantic surface and overturning circulation (DYNASOR) (PI: Andreas Born, GEO) (SKD Strategic project 2022-2025): https://bjerknes.uib.no/en/article/project/strategic-projects-2022-2025)

Proxy assimilation for reconstructing climate and improving model (PARCIM) (PI: Francois Counillon, NERSC) (SKD Strategic project 2022-2025): https://bjerknes.uib.no/en/article/project/strategic-projects-2022-2025

The Nansen Legacy (Arven etter Nansen, AeN) (PI: Marit Reigstad, UiT):  https://arvenetternansen.com/

Previous projects that I have been involved in/contributed to:

Thresholds for destabilizing thermohaline circulation and ocean carbon cycling in a warmer world (THRESHOLDS) (Research Council of Norway project; PI: Ulysses S. Ninnemann, GEO)

Subpolar North Atlantic Climate States (SNACS) (Research Council of Norway project; PI: Are Olsen, GFI)

North Atlantic Ocean-Climate Variability in a Warmer World (NOCWARM) (Research Council of Norway project; PI: Kikki Kleiven, GEO)

Atlantic Meridional Overturning Circulation During Interglacials (AMOCINT) (European Science Foundation, EuroMARC Program; PI: Eystein Jansen, GEO)

 

 

Short CV

Education

2012    PhD, Marine Geology & Geophysics, Department of Earth Science, University of Bergen, Bergen, Norway

2008    MSc, Climate and Marine Sciences, Eurasia Institute of Earth Sciences, Istanbul Technical University, Istanbul, Turkey

2006    Bachelor’s degree, Geological Engineering, Faculty of Mines, Istanbul Technical University, Istanbul, Turkey

Professional Experience

2014-: Researcher, Department of Earth Science, University of Bergen

2012-2014: Researcher, NORCE Norwegian Research Centre, Bergen, Norway

2008-2012: PhD Candidate, NORCE Norwegian Research Centre, Bergen, Norway

2006-2008: Research assistant, Eastern Mediterranean Centre for Oceanography & Limnology (EMCOL), Eurasia Institute of Earth Sciences, Istanbul Technical University, Turkey

2005: Intern, Bjerknes Centre for Climate Research, University of Bergen (IAESTE Trainee)

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