Tucked away at the Glencanisp Lodge (Lochinver, Scotland) at the base of the Suilven mountain, the recent PALSEA2 meeting focused on databases of sea-level indicators. The meeting brought together experts from the ‘data’ and ‘modelling’ communities. iGlass was well represented (the meeting was organised by iGlass members Natasha Barlow and Anthony Long) with presentations from André Dϋsterhus, Peter Clark, Roland Gehrels, Fiona Hibbert, Glenn Milne, Matt Whipple and Felicity Williams.
Two field days introduced us to the geology and glacial history of the area, as well as examples of salt marsh and isolation basin records of past sea level change. Two days of presentations brought together the latest work on sea-level change and ice sheet interactions with a focus on sea level database creation and their application. Discussions enabled participants to gain insights into the work of others: for some it was their first close encounter with glacial till or salt marsh records in the field, for others it provided useful primer on U-series and cosmogenic dating, as well as insights into data-model integration/comparison.
The relaxed setting allowed senior and junior scientists to interact within a friendly environment and enjoy the stunning Scottish scenery (posters outside, in Scotland, in September!).
The iGlass consortium was well represented at this years EGU conference in Vienna. Highlights included the co-organised session (CL5.11) “Sea level in interglacials and the last deglaciation” which included the “Milutin Milankovic Medal Lecture” given by Maureen Raymo. It thematised her career with a special focus on her work on the climate variability over the past four million years.
iGlass members gave talks on their current work: Roland Gehrels spoke on the variability of sea-level in the north atlantic during the last millennium; André Düsterhus on the uncertainties of sea-level during the last interglacial and; Fiona Hibbert on a global repository of coral and speleotherm records for past sea level change.
iGlass was also well represented at the poster sessions: Emelie Capron presented a high latitude temperature evaluation across the last interglacial (see current blog), Katy Pol summarised climate in older interglacials (MIS 7,9 and 11); Joy Singarayer presented insights into the modelling of the thermometric contribution to global and regional sea-level rise during the last interglacial; Margot Saher looked at the modes of interglacial sea-level change; Karine Wainer showcased new constraints for MIS 5 and 7 for the Bermuda sea level and; Felicity Williams presented two posters on the use of isostatic scenarios to access coherence between continuous and instantaneous sea level indicators during the last interglacial.
Furthermore, many more contributions of iGlass members were presented in other sessions during the conference week. All in all the conference was seen as a good showcase for our work, which showed the broad range and depth of this project to a wider scientific community!
Over the coming weeks we will introduce members of each team working on the iGlass consortium project. Today we will introduce the team from the National Oceanography Centre in Liverpool.
Dr Mark Tamisiea
Mark Tamisiea is a geophysicist that studies the motion of the Earth’s crust and variations of water depth in the oceans caused by past and present changes of the ice sheets. This collective response of the crust ond oceans is typically called glacial isostatic adjustment (GIA). His Ph.D. in physics from the University of Colorado at Boulder examined how solid-solid phase transitions in the Earth’s mantle might affect observations of GIA. Starting with his post-doc at the University of Toronto, his work has focused on the regional sea level changes caused by GIA. Understanding the regional differences is vital to interpreting the causes of past and present sea level change. Mark has been at the National Oceanography Centre (formally the Proudman Oceanographic Laboratory) since 2007 and prior to that was at the Smithsonian Astrophysical Observatory in Cambridge, Massachusetts.
Dr Svetlana Jevrejeva
Svetlana Jevrejeva is a physical oceanographer who works for NOC Liverpool since 2002. Her main research interests are in the variability of global and regional sea level change and development and application of advanced statistical methods. She had contributed to the development of the wavelet coherence method and is author of the unique sea level reconstruction since 1700. She has major publications in the field of time series analysis and the application of novel statistical methods to earth science problems. During the Fifth Assessment report of Intergovernmental Panel of Climate Change (IPCC) she was a Lead Author of the Working Group 1 chapter on Sea level changes. Recent work has focused on sea level projections by 2100, changes in extreme sea levels in the past and their link to climate change.
Dr André Düsterhus
André Düsterhus is a meteorologist specialised in statistical data analysis. He is part of iGlass since 2013 and is working on the connection between GIA modelling and observations of the sea-level variations in the past interglacials. This is done by using verification and data assimilation techniques with a focus on Bayesian statistics. Prior to his appointment at NOC Liverpool, André had received his diploma and PhD in meteorology at the University of Bonn and worked within the climate dynamics workgroup of Andreas Hense. His PhD thesis covered the development of quality assurance procedures within data publication processes. A focus was set therein on the development of statistical quality assurance tests on general data and data peer review schemes.