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Dr Rachael H. Rhodes

Dr Rachael H. Rhodes

Research Associate

Marie Curie Individual Fellow

College Research Associate, St John's College

Climate Change and Earth-Ocean-Atmosphere Systems

Downing Site
Downing Street
Cambridge

Room: N302

CB2 3EQ
Office Phone: +44 (0) 1223 764368

Biography:

01/10/2015–30/09/2017    Marie Curie Individual Fellowship:"Sea ice across Dansgaard-Oeschger events in Greenland”. Department of Earth Sciences, University of Cambridge, UK. Research focus: Improving estimates of Arctic sea ice conditions during abrupt climate changes using ice core chemistry and chemical transport modelling. Mentor: Prof. Eric Wolff

01/06/2015–31/09/2015   Ice Core Laboratory Analyst, British Antarctic Survey, Cambridge, UK. Responsibilities: Assisting with continuous flow analysis of i-STAR shallow cores from West Antarctica; development of analytical technique for halogen measurements on ice core samples.

07/2014–31/05/2015    Research Associate, College of Earth, Ocean and Atmospheric Sciences, Oregon State University, USA. Research focus: Abrupt, sub-millennial climate changes of Last Glacial; non-climatic artefacts in ice core methane records; centennial scale methane variability. Supervisor: Prof. Edward J. Brook

06/2011–06/2014    Postdoctoral Scholar, College of Earth, Ocean and Atmospheric Sciences, Oregon State University, USA. Research focus: Development and application of laser spectroscopy to continuous measurement of trace gas concentrations in ice cores. Supervisor: Prof. Edward J. Brook

2011                Ph.D. Geology, Victoria University of Wellington, New Zealand. Thesis title: Insights into Late Holocene climate of the Ross Sea Region, Antarctica, from high resolution ice core chemistry. Supervisors:  Dr. Nancy A.N. Bertler and Prof. Joel A. Baker

2007                MGeol (Hons) Environmental Geology (International) (1st class), University of Leeds, UK

 

Key Publications

McConnell, J. R., and 30 authors including R. H. Rhodes, 2017. Volcanic eruptions precisely coincident with abrupt climate change ~17.7k years ago plausibly linked by stratospheric ozone loss. Proceedings of the National Academy of Sciences, doi: 10.1073/pnas.1705595114

Rhodes, R. H., Yang, X., Wolff, E. W., McConnell, J. R., and Frey, M. M., 2017, Sea ice as a source of sea salt aerosol to Greenland ice cores: a model-based study, Atmospheric Chemistry & Physics, 17, 9417-9433, https://doi.org/10.5194/acp-17-9417-2017.

Rhodes, R. H., E. J. Brook, J. R. McConnell, T. Blunier, L. C. Sime, X. Faïn, R. Mulvaney, 2017. Atmospheric methane variability: Centennial scale signals in the Last Glacial Period.  Global Biogeochemical Cycles, 1, 575590, doi:10.1002/2016GB005570. http://onlinelibrary.wiley.com/doi/10.1002/2016GB005570/full

Maselli, O. J., Chellman, N. J., Grieman, M., Layman, L., McConnell, J. R., Pasteris, D., Rhodes, R. H., Saltzman, E., and Sigl, M., 2017. Sea ice and pollution-modulated changes in Greenland ice core methanesulfonate and bromine, Climate of the Past, 13, 39-59, doi:10.5194/cp-13-39-2017.  http://www.clim-past.net/13/39/2017/

Rhodes, R. H., X. Faïn, E. J. Brook, J. R. McConnell, M. Sigl, O. Maselli, J. Edwards, C. Buizert, T. Blunier, J. Chappellaz, J. Freitag, 2016. Local artifacts in ice core methane records caused by layered bubble trapping and in-situ production: a multi-site investigation. Climate of the Past, 12, 1061-1077, doi:10.5194/cp-12-1061-2016.  http://www.clim-past.net/12/1061/2016/

Sigl, M. and 26 authors including R. H. Rhodes, 2016. The WAIS Divide deep ice core WD2014 chronology – Part 2: Annual-layer counting (0-31 ka BP). Climate of the Past, 12, 769-786, doi:10.5194/cp-12-769-2016. http://www.clim-past.net/12/769/2016/

Rhodes, R. H., E. J. Brook, J. Chiang, T. Blunier, O. J. Maselli, J. R. McConnell, D. Romanini, J. P. Severinghaus,2015. Enhanced tropical methane production in response to iceberg discharge in the North Atlantic. Science, 1016-1019. 10.1126/science.1262005.

***WAIS Divide continuous methane data are available to download at USAP data centre: awardID 609628**

WAIS Divide Project Members including R. H. Rhodes, 2015. Precise interhemispheric phasing of the bipolar seesaw during abrupt Dansgaard-Oeschger events. Nature, 520, 661-665. http://www.nature.com/nature/journal/v520/n7549/full/nature14401.html

Mitchell, L. E., C. Buizert, E. J. Brook, D. Breton, J. Fegyveresi, D. Baggenstos, A. Orsi, J. Severinghaus, R. B. Alley, M. Albert, R. H. Rhodes, J. R. McConnell, M. Sigl, O. Maselli, S. Gregory, J. Ahn, 2015. Observing and modeling the influence of layering on bubble trapping in polar firn. Journal of Geophysical Research: Atmospheres, 120, doi:10.1002/2014JD022766. http://onlinelibrary.wiley.com/doi/10.1002/2014JD022766/abstract

Buizert, C., K. M. Cuffey, J. P. Severinghaus, D. Baggentos, T. J. Fudge, E. J. Steig, B. R. Markle, M. Winstrup, R. H. Rhodes et al., 2015. The WAIS-Divide deep ice core WD2014 chronology - Part 1: Methane synchronization (68–31 ka BP) and the gas age-ice age difference. Climate of the Past, 11, 153–173. http://www.clim-past.net/11/153/2015/cp-11-153-2015.html

Faïn, X., J. Chappellaz, R. H. Rhodes, C. Stowasser, T. Blunier, J. R. McConnell, E. J. Brook, M. Legrand, T. Debois, D. Romanini, 2014. High resolution measurements of carbon monoxide along a late Holocene Greenland ice core: evidence for in-situ production. Climate of the Past, 10, 987–1000. http://www.clim-past-discuss.net/9/2817/2013/cpd-9-2817-2013.pdf

Rhodes, R. H., X. Faïn, C. Stowasser, T. Blunier, J. Chappellaz, J. R. McConnell, D. Romanini, L. E. Mitchell, E. J. Brook, 2013.  Continuous methane measurements from a late-Holocene Greenland ice core: atmospheric and in-situ signals. Earth and Planetary Science Letters, 368, 9–19. http://www.sciencedirect.com/science/article/pii/S0012821X13001088

Rhodes, R. H., N. A. N. Bertler, J. A. Baker, H. C. Steen-Larsen, S. B. Sneed, U. Morgenstern, S. J. Johnsen, 2012.  Little Ice Age climate and oceanic conditions of the Ross Sea, Antarctica, from a coastal ice core record. Climate of the Past, 8, 1223–1238. [PDF]

Rhodes, R. H., J. A. Baker, M-A. Millet, N. A. N. Bertler, 2011. Experimental investigation of the effects of mineral dust on the reproducibility and accuracy of ice core trace element analyses. Chemical Geology, 286, 207222doi:10.1016/j.chemgeo.2011.05.006

Purdie, H., N. A. N. Bertler, A. Mackintosh, J. A. Baker, R. H. Rhodes, 2010. Isotopic and elemental changes in winter snow accumulation on glaciers in the Southern Alps of New Zealand. Journal of Climate 23, doi: 10.1175/2010JCLI3701.1

Rhodes, R. H., N. A. N. Bertler, J. A. Baker, S. B. Sneed, H. Oerter, K. R. Arrigo, 2009. Sea ice variability and primary productivity in the Ross Sea, Antarctica, from methylsulphonate snow record. Geophysical Research Letters 36, L10704, doi:10.1029/2009GL037311. http://onlinelibrary.wiley.com/doi/10.1029/2009GL037311/full

 

 

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