![Alexander Krause BSc (Hons), MSc, PhD](https://profiles-cardiff.imgix.net/attachments/6642?w=200&h=200&auto=format&crop=faces&fit=crop&q=90")
Dr Alexander Krause
(e/fe)
BSc (Hons), MSc, PhD
- Ar gael fel goruchwyliwr ôl-raddedig
Timau a rolau for Alexander Krause
Darlithydd
Trosolwyg
Yn fras, mae gen i ddiddordeb yn esblygiad biogeocemegol system y Ddaear dros amrywiaeth o amserlenni a cheisio deall beth mae hyn yn ei olygu ac mae wedi ei olygu ar gyfer bywyd ar y Ddaear, ac a allwn gymhwyso'r wybodaeth hon ar gyfer dod o hyd i fywyd mewn mannau eraill yn y Bydysawd. Yn fy ymchwil rwy'n adeiladu modelau rhifiadol o system y Ddaear ac yn cymharu fy nghanlyniadau â data biogeocemegol.
Fi hefyd yw'r Arweinydd Llais Myfyrwyr Academaidd newydd ar gyfer yr ysgol.
Cyhoeddiad
2024
- Krause, A. J., Shields, G. A., Newton, R. J. and Mills, B. J. W. 2024. Modelling sulfate concentrations in the global ocean through Phanerozoic time. Journal of the Geological Society 181(4) (10.1144/jgs2023-184)
- Krause, A. J., Sluijs, A., van der Ploeg, R., Lenton, T. M. and Pogge von Strandmann, P. A. E. 2024. Publisher correction: enhanced clay formation key in sustaining the middle eocene climatic optimum. Nature Geoscience 17, article number: 104. (10.1038/s41561-023-01280-6)
2023
- Pogge von Strandmann, P. A. et al. 2023. Assessing hydrological controls on the lithium isotope weathering tracer. Chemical Geology 642, article number: 121801. (10.1016/j.chemgeo.2023.121801)
- Bowyer, F. T. et al. 2023. Biological diversification linked to environmental stabilization following the Sturtian Snowball glaciation. Science Advances 9(34), article number: eadf9999. (10.1126/sciadv.adf9999)
- Krause, A. J., Sluijs, A., van der Ploeg, R., Lenton, T. M. and Pogge von Strandmann, P. A. E. 2023. Enhanced clay formation key in sustaining the middle eocene climatic optimum. Nature Geoscience 16, pp. 730–738. (10.1038/s41561-023-01234-y)
- Mills, B. J., Krause, A. J., Jarvis, I. and Cramer, B. D. 2023. Evolution of atmospheric O2 through the Phanerozoic, revisited. Annual Review of Earth and Planetary Sciences 51(1), pp. 253-276. (10.1146/annurev-earth-032320-095425)
2022
- Krause, A. J., Mills, B. J. W., Merdith, A. S., Lenton, T. M. and Poulton, S. W. 2022. Extreme variability in atmospheric oxygen levels in the late Precambrian. Science Advances 8(41), article number: eabm8191. (10.1126/sciadv.abm8191)
- Shi, W. et al. 2022. Decoupled oxygenation of the Ediacaran ocean and atmosphere during the rise of early animals. Earth and Planetary Science Letters 591, article number: 117619. (10.1016/j.epsl.2022.117619)
- Pogge von Strandmann, P. A. et al. 2022. Lithium isotope behaviour during basalt weathering experiments amended with organic acids. Geochimica et Cosmochimica Acta 328, pp. 37-57. (10.1016/j.gca.2022.04.032)
2020
- Alcott, L. J. et al. 2020. Development of iron speciation reference materials for Palaeoredox analysis. Geostandards and Geoanalytical Research 44(3), pp. 581-591. (10.1111/ggr.12342)
2019
- Mills, B. J., Krause, A. J., Scotese, C. R., Hill, D. J., Shields, G. A. and Lenton, T. M. 2019. Modelling the long-term carbon cycle, atmospheric CO2, and Earth surface temperature from late Neoproterozoic to present day. Gondwana Research 67, pp. 172-186. (10.1016/j.gr.2018.12.001)
2018
- Krause, A. J., Mills, B. J. W., Zhang, S., Planavsky, N. J., Lenton, T. M. and Poulton, S. W. 2018. Stepwise oxygenation of the Paleozoic atmosphere. Nature Communications 9(1), article number: 4081. (10.1038/s41467-018-06383-y)
- Zhang, S., Planavsky, N. J., Krause, A. J., Bolton, E. W. and Mills, B. J. W. 2018. Model based Paleozoic atmospheric oxygen estimates: a revisit to GEOCARBSULF. American Journal of Science 318(5), pp. 557–589. (10.2475/05.2018.05)
Erthyglau
- Krause, A. J., Shields, G. A., Newton, R. J. and Mills, B. J. W. 2024. Modelling sulfate concentrations in the global ocean through Phanerozoic time. Journal of the Geological Society 181(4) (10.1144/jgs2023-184)
- Krause, A. J., Sluijs, A., van der Ploeg, R., Lenton, T. M. and Pogge von Strandmann, P. A. E. 2024. Publisher correction: enhanced clay formation key in sustaining the middle eocene climatic optimum. Nature Geoscience 17, article number: 104. (10.1038/s41561-023-01280-6)
- Pogge von Strandmann, P. A. et al. 2023. Assessing hydrological controls on the lithium isotope weathering tracer. Chemical Geology 642, article number: 121801. (10.1016/j.chemgeo.2023.121801)
- Bowyer, F. T. et al. 2023. Biological diversification linked to environmental stabilization following the Sturtian Snowball glaciation. Science Advances 9(34), article number: eadf9999. (10.1126/sciadv.adf9999)
- Krause, A. J., Sluijs, A., van der Ploeg, R., Lenton, T. M. and Pogge von Strandmann, P. A. E. 2023. Enhanced clay formation key in sustaining the middle eocene climatic optimum. Nature Geoscience 16, pp. 730–738. (10.1038/s41561-023-01234-y)
- Mills, B. J., Krause, A. J., Jarvis, I. and Cramer, B. D. 2023. Evolution of atmospheric O2 through the Phanerozoic, revisited. Annual Review of Earth and Planetary Sciences 51(1), pp. 253-276. (10.1146/annurev-earth-032320-095425)
- Krause, A. J., Mills, B. J. W., Merdith, A. S., Lenton, T. M. and Poulton, S. W. 2022. Extreme variability in atmospheric oxygen levels in the late Precambrian. Science Advances 8(41), article number: eabm8191. (10.1126/sciadv.abm8191)
- Shi, W. et al. 2022. Decoupled oxygenation of the Ediacaran ocean and atmosphere during the rise of early animals. Earth and Planetary Science Letters 591, article number: 117619. (10.1016/j.epsl.2022.117619)
- Pogge von Strandmann, P. A. et al. 2022. Lithium isotope behaviour during basalt weathering experiments amended with organic acids. Geochimica et Cosmochimica Acta 328, pp. 37-57. (10.1016/j.gca.2022.04.032)
- Alcott, L. J. et al. 2020. Development of iron speciation reference materials for Palaeoredox analysis. Geostandards and Geoanalytical Research 44(3), pp. 581-591. (10.1111/ggr.12342)
- Mills, B. J., Krause, A. J., Scotese, C. R., Hill, D. J., Shields, G. A. and Lenton, T. M. 2019. Modelling the long-term carbon cycle, atmospheric CO2, and Earth surface temperature from late Neoproterozoic to present day. Gondwana Research 67, pp. 172-186. (10.1016/j.gr.2018.12.001)
- Krause, A. J., Mills, B. J. W., Zhang, S., Planavsky, N. J., Lenton, T. M. and Poulton, S. W. 2018. Stepwise oxygenation of the Paleozoic atmosphere. Nature Communications 9(1), article number: 4081. (10.1038/s41467-018-06383-y)
- Zhang, S., Planavsky, N. J., Krause, A. J., Bolton, E. W. and Mills, B. J. W. 2018. Model based Paleozoic atmospheric oxygen estimates: a revisit to GEOCARBSULF. American Journal of Science 318(5), pp. 557–589. (10.2475/05.2018.05)
Ymchwil
Rwy'n fiogeocemegydd ac mae fy mhrif ddiddordeb yw ceisio deall cyd-esblygiad bywyd a'r Ddaear trwy amser daearegol.
Rwy'n adeiladu modelau rhifiadol o system y Ddaear, gan ymgorffori ystod eang o ddata daearegol, er mwyn archwilio'r newidiadau i'r amgylchedd arwyneb (cefnforoedd-atmosffer-crwst uchaf) dros amrywiaeth o amserlenni ac ymchwilio i ba brosesau allai fod wedi gyrru'r newidiadau hyn.
Yn benodol, mae llawer o'm gwaith yn canolbwyntio ar: dehongli'r crynodiadau ocsigen yn yr atmosffer a'r cefnforoedd yng ngorffennol y Ddaear; penderfynu pryd a pham roedd crynodiadau yn amrywio; a sut y gallem ddefnyddio'r wybodaeth hon ar gyfer y Ddaear bresennol a'r dyfodol, yn ogystal ag wrth chwilio am fywyd mewn mannau eraill yn y Bydysawd. Mae gen i ddiddordeb hefyd mewn defnyddio proxies geocemegol, gan gynnwys cymarebau isotop, i helpu i ail-greu paleohinsoddau a hindreuliad daearol yn y gorffennol, i ddeall sut mae'r Ddaear yn mynd i mewn ac allan o eithafion hinsawdd (bydoedd tŷ poeth a digwyddiadau Snowball Earth).
Bywgraffiad
Medi 2024 - Yn bresennol: Darlithydd mewn Cylchoedd Biogeocemegol Byd-eang, Prifysgol Caerdydd, UK
Ionawr 2024 - Awst 2024: Cymrawd Ymchwil mewn Modelu Biogeocemegol, Prifysgol Leeds, UK
Ionawr 2020 - Rhagfyr 2023: Cymrawd Ymchwil ym Modelu'r System Ddaear, UCL, DU
Hydref 2016 - Jul 2020: PhD mewn Gwyddorau Daear, Esblygiad planed y gellir byw ynddi: Astudiaeth modelu biogeocemegol o gynnydd ocsigen i lefelau modern, Prifysgol Leeds, UK
Medi 2014 - Awst 2016: MSc mewn Gwyddor yr Amgylchedd, Prifysgol East Anglia, UK
Medi 2013 - Jul 2014: Tystysgrif i Raddedigion mewn Daeareg, Birbeck, Coleg Prifysgol Llundain, UK
Hydref 2002 - Jul 2005: BSc mewn Ffiseg a Meteoroleg, Prifysgol Reading, UK
Aelodaethau proffesiynol
- Cymdeithas Ewropeaidd Geocemeg
- Rwy'n aelod cyfetholedig o grŵp diddordeb arbennig Gwyddor System Ddaear Cymdeithas Ddaearegol Llundain.
Pwyllgorau ac adolygu
Rydw i ar bwyllgor trefnu cynhadledd flynyddol, Bywyd a Phlanws grŵp Gwyddorau'r System Ddaear.
Rwyf wedi darparu adolygiadau cymheiriaid ar gyfer y cyfnodolion canlynol:
- Geowyddoniaeth Natur
- Cyfathrebu Natur
- Ymchwil Gondwana
- Journal of the Geological Society of London
- Geochimica et Cosmochimica Acta
- Newid Byd-eang a Planedol
Contact Details
+44 29 2251 5354
Y Prif Adeilad, Ystafell 0.16A, Plas y Parc, Caerdydd, CF10 3AT
Themâu ymchwil
Arbenigeddau
- Biogeocemeg
- Modelu System Ddaear
- Cyd-esblygiad y Ddaear a Bywyd
- Paleoclimates a Weathering
- Geocemeg isotopau