Session OSM 12
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Image credit: Glynn Gorick for IGBP |
Climate change: Physical forcings and biogeochemical feedbacks
Convenors
Jennifer Marlon, James Levine, Jérôme Chappellaz, Bärbel Hönisch
Description
Our understanding of past and future climate- and biogeochemical changes rests on modern observations, paleo-proxies and models. Modern and paleo data, however, are limited and uncertain, as is our understanding of the science manifested in the models. As a result, reproducing past climate changes and the underlying feedbacks between the atmosphere, ocean, biosphere and lithosphere remains a great challenge.
This session seeks new and evolving insights into the history and strength of key forcings on the Earth energy balance (greenhouse gases, solar irradiance, aerosols and volcanic activity, surface albedo notably associated with land use, vegetation and cryospheric changes) and biogeochemical feedbacks (based on observations and modelling) in relation to: greenhouse gases, the carbon cycle, dust, fire and ocean acidification.
Talks and Posters
Talks
Thursday, 14 February 11:00 - 12:30
Chair: James Levine, Jérôme Chappellaz
11:00 - 11:15
Continental-scale temperature variability over the Common Era
Chris Turney, Members PAGES 2K
11:15 - 11:30
The role of dust in glacial-interglacial cycles
Rotem Bar-Or, Hezi Gildor, Caryn Erlick
11:30 - 11:45
New CO2 and δ13CO2 ice core records on carbon cycle changes during the last glacial cycle
Hubertus Fischer, Jochen Schmitt, Robert Schneider, Bernhard Bereiter, Fortunat Joos, Markus Leuenberger, Thomas Stocker, Peter Köhler, Jerome Chappellaz
11:45 - 12:00
High resolution characterization of the Indian monsoon over the last glacial period from Bitoo Cave, northern India
Gayatri Kathayat, Hai Cheng, Ashish Sinha, R. L. Edwards
12:00 - 12:15
Were glacial-interglacial changes in the biological pump driven primarily by the marine ecosystem response to ocean temperature and iron fertilization?
Eric Galbraith
12:15 - 12:30
Silicon and carbon isotope reconstructions of Holocene productivity of the sea ice zone of the Southern Ocean (east Antarctica)
Virginia Panizzo, Julien Crespin, Damien Cardinal, Aldo Shemesh, Xavier Crosta, Nadine Mattielli
Posters
Display: Wednesday, 13 February and Thursday, 14 February
Author attendance: Thursday 16:00 - 18:00
Chair: James Levine, Jérôme Chappellaz
A multidisciplinary laboratory study using iron oxide 'markers' from modern drylands dust towards adapting this methodology for characterizing Quaternary dust, their source areas and transport paths
Subir Banerjee, Kimberly Yauk, Richard Reynolds, Harland Goldstein, Thelma Berquo, Bruce Moskowitz
A multiproxy examination of the toarcian oceanic anoxic event, Arroyo Lapa (north and south) Neuquen Basin, Argentina
Aisha Al Suwaidi, François Baudin, Susana Damborenea, Stephen Hesselbo, Hugh Jenkyns, Miguel Manceñido, Richard Pancost, Alberto Riccardi, Chris Siebert
Accelerator Mass Spectrometry: revealing subtle signals in ice sheets
Andrew Smith
Biogeochemical constraints from carbon monoxide measured in firn air and ice cores
Xavier Faïn, Jérôme Chappellaz, Daniele Romanini, Zhihui Wang, Thomas Blunier, Christopher Stowasser, John Mak, Rachel Rhodes, Vas Petrenko, Ed Brook, Joe McConnell, Jeff Severinghaus, Matthias Bigler
Diatom based sea-ice reconstruction over the past 95,000 years in the Indian Ocean sector of Southern Ocean
Abhilash Nair, Rahul Mohan, M.C Manoj, Meloth Thamban
Effect of climate change on agriculture and health in India
Rabindra Kumar, J. Nagendra Babu
First results of the paleolimnological research in Tundra polygons (The project POLYGON)
Viktor Sitalo, Dmitry Subetto, Lutz Schirrmeister, Sebastian Wetterich, Andrea Schneider
High-resolution multi-proxy climatic reconstruction off Myanmar suggestive of climatic modulations due to solar forcing during the past ~ 489 years
Rajani Panchang, Rajiv Nigam
Holocene carbon fluxes in the tropical peatlands of Southeast Asia: the contrasting roles of changing sea-level and climate
René Dommain, Hans Joosten, Paul H. Glaser
How can ice cores constrain our knowledge of the likelihood of damaging solar flare events?
Eric Wolff, Juerg Beer, Matthias Bigler, Mark Curran, Jack Dibb, Markus Frey,, Michel Legrand, Joe McConnell
Late Glacial-Holocene Elemental and Stable Isotope Records from the Southeastern Arabian Sea
Yoganandan Veeran, Selvaraj Kandasamy, S.J Kao, Ravi Prasad G. V, Koushik Dutta, Krishnaiah C, Gangadhara Bhat H
Plio-Pleistocene evolution of nutrient cycling in the Benguela upwelling system: A chlorin-specific δ15N approach
Guillaume Leduc, Hisami Suga, Nana Ogawa, Johan Etourneau, Ralph Schneider, Nao Ohkouchi
Precession forcing of fire activity in subtropical southern Africa over the past 170,000 years
Anne-Laure Daniau, Maria Fernanda Sánchez Goñi, Philippe Martinez, Dunia H. Urrego,, Viviane Bout-Roumazeilles, Stéphanie Desprat, Jennifer R. Marlon
Reconstruction of the Late Quaternary climatic change from glaciogenic varve deposits in Lahaul and Spiti, N-W Himalaya
Archna Bohra
Seasonal variability of atmospheric aerosol over the North Indian region during 2010
Sarvan Kumar, Abhay Kumar Singh
Synchronous variations in terrigenous flux to the Bay of Bengal and solar insolation: Implications to solar forcing on monsoon system
Ravi Bhushan, Sunil K Singh
The late Pleistocene-Holocene climatic transition record in the alluvial sequences of central Argentina (33-38°S)
Mehl Adriana, Zárate Marcelo
The lightning-biota climatic feedback
Hezi Gildor, Alon Shepon
Tracking carbon dynamics and climate forcing through Holocene peatland development by combining palaeoecological information and modern carbon flux measurements
Paul Mathijssen, Minna Väliranta, Eerika Niemelä, Annalea Lohila, Juha-Pekka Tuovinen
Variations in planktonic foraminifera shell calcification in the Eastern Arabian Sea during the Holocene
Sushant Naik, Shijo Matthews, Shital Godad, Pothuri Divakar Naidu
