publications

Submitted, in preparation

Timm, O. and H. F. Diaz (2008), Synoptic-Statistical Approaches to Regional Downscaling of IPCC 21st
Century Climate Projections: A Hawaiian Islands Study, submitted to J. Climate.
Timm. O., P. Koehler, A. Timmermann, L. Menviel (2008), Mechanisms for the onset of the African Humid Period, in preparation.
Tshushima, Y., E. Raschke, S. Kinne, A. Abe-Ouchi, S. Bakan, S. Emori, M. Giorgetta, G. Kopp, F. Saito, O. Timm, M. Wild (2008), Key Parameters for the Inconsistencies of the Incoming Solar Radiation Boundary Condition in Global Modeling, in preparation.

peer-reviewed

submitted

presentations

other publications

published data

Presentations at conferences

Timm, O. (2008), Statistical Projection of Global Climate Change Scenarios onto Hawaiian Rainfall,
oral presentation, Forum on Climate Change in Hawaii, Hawaii Conservation Alliance, Honolulu, Hawaii, USA. (ppt)
Timm, O., P. Koehler, A. Timmermann, L. Menviel (2008), Climate-Vegetation-Feedbacks as a Mechanism for Accelerated Climate Change: The onset of the African Humid Period, poster presentation, The Leverhulme Climate Symposium 2008, University of Cambridge and the Royal Society, London , United Kingdom. (pdf)
Timm, O., P. Koehler, A. Timmermann (2007), Climate-Vegetation-Feedbacks as a Mechanism for Accelerated Climate Change: The Greening Sahara Case, poster presentation, AGU Fall Meeting, San Francisco, California, USA. (pdf)
Timm, O. (2007), Adaption of Paleoclimate Reconstructions for Interdisciplinary Research,
Workshop on Climatic Changes in the Last 1500 Years: Their Impact on Pacific Islands, Honolulu, Hawaii, USA. (ppt)
Timm, O., A. Timmermann, A. Abe-Ouchi, T. Segawa,, F. Saito (2007), Orbital Control of Monsoon Circulation in an accelerated transient simulation over the last 130,000 years, oral presentation, EGU General Assembly, Vienna, Austria. (PowerPoint,OpenOffice)
Timm, O., A. Timmermann, L. Menviel, L. Stott (2006), Local orbital forcing as a jump-starter for the last glacial termination over Antarctica, poster presentation, AGU Fall Meeting, San Francisco, California, USA. (pdf)
Timm, O., and A. Timmermann (2005), Transient simulation of Holocene climate: Seasonal trend analysis and implications for proxy interpretations, oral presentation, AGU Fall Meeting, San Francisco, California, USA.
Timm, O. (2005), Are coral proxies capable of detecting climatic shifts in teleconnection pattern?, oral presentation, AGU Chapman Conferenene on "Tropical-Extratropical Climatic Teleconnections, A Long-Term Perspective", Honolulu, Hawaii, USA.
Timm, O., and E. Ruprecht (2003), Reconstructing the low frequency variance of the North Atlantic Oscillation index: Limits and error estimates, poster presentation, EGS-AGU-EUG Joint Assembly, Nice, France.
Timm, O., E. Ruprecht, M. Pfeiffer, and W. Dullo (2003), A method of separating local and large scale climate signals in coral proxies, poster presentation, EGS-AGU-EUG Joint Assembly, Nice, France.
Timm, O., and E. Ruprecht (2002), Scale-dependent reconstruction of a winter index for the North Atlantic Oscillation, oral presentation, XXVII General Assembly of the European Geophysical, Society, Nice, France.
Timm, O., and E. Ruprecht (2001), Rekonstruktionsmöglichkeiten des Nordatlantischen Oszillations Indexes anhand von Proxy-Daten, oral presentation, DACH Meteorologentagung, Wien, Österreich.
Timm, O., and E. Ruprecht (2000), Studies for the reconstruction of the North Atlantic Oscillation index from Greenland ice cores, poster presentation, AGU Chapman Conference, Ourense, Spain.

Co-Author:

Zinke, J. and O. Timm, M. Pfeiffer, W.-C. Dullo, Thomassin, B. (2007), ENSO and IOZM telelconnection in SST and the hydrologic balance between 1865-1994 revealed by coupled coral Sr/Ca and oxygen isotope record from Mayotte (N. Mozambique Channel), oral presentation, XVII INQUIA Congress, Cairns, Australia.
Zinke, J., M. Pfeiffer, O. Timm, T. Crueger, W.-C. Dullo (2007), Circum Indian Ocean marine
and terrestrial records of climate variability: Investigating land-ocean interaction since A.D. 1650, oral presentation, XVII INQUIA Congress, Cairns, Australia.
Lamy, F., J. Kaiser, H. W. Arz, D. Hebbeln, U. Ninnemann, O. Timm,
A. Timmermann, J. R. Toggweiler (2007), Modulation of the bipolar seesaw in the Southeast Pacific during Termination 1, oral presentation, EGU General Assembly, Vienna, Austria.
Zinke, J., M. Pfeiffer, O. Timm, W.-C. Dullo (2007), Circum Indian Ocean marine and terrestrial records of climate variability: investigating land-ocean interaction since A.D. 1650,
oral presentation, EGU General Assembly, Vienna, Austria.
Cahyarini, S., M. Pfeiffer, O. Timm, W.-C. Dullo (2006), Evaluation the methods of seawater δ18O reconstruction from paired coral δ18O and Sr/Ca ratios: examples from Tahiti (French Polynesia) and Timor (Indonesia) records, poster presentation, Ocean Science Meeting, Honolulu, Hawaii, USA.
Pfeiffer, M., O. Timm, W.-C. Dullo (2006), Sr/Ca and Oxygen Isotope Records of Modern Porites Corals From the Tropical Indian Ocean: 20th Century Warming Affects Rainfall Variability, poster presentation, Ocean Science Meeting, Honolulu, Hawaii, USA.
Zinke, J., O. Timm, W.-C. Dullo, G. R. Davies, D. A.Thomassin (2006), Decadal Variations in Seawater Oxygen Isotopes Derived from Corals from the Northern Mozambique Channel, W Indian Ocean, oral presentation, Ocean Science Meeting, Honolulu, Hawaii, USA.
Pfeiffer, M., O. Timm, and W.-C. Dullo (2005), Tropical Indian Ocean Temperatures from Sr/Ca Ratios of Modern Porites Corals: Assessing the Impact of 20th Century Warming on Tropical
Rainfall, oral presentation, AGU Fall Meeting, San Francisco, California, USA.
M. Pfeiffer, O. Timm, W.-C. Dullo, E. Ruprecht: ENSO and Precipitation in the Tropical Indian Ocean: Non-stationary Teleconnections?, Ocean Science Meeting, Portland, Oregon, USA, 2004.
Zinke, J., W.-C. Dullo, O. Timm, B. A. Thomassin (2004), ENSO variability in coral records from the Mozambique Channel (SW Indian Ocean), EGU General Assembly , Nice, France.

peer-reviewed

submitted

presentations

other publications

published data

Other publications/presentations

Dissertation:

Timm, O., 2003: Decadal and Interdecadal Variability of the North Atlantic Oscillation: A Paleoclimatic Index Reconstruction, Dissertation, Institut fuer Meereskunde an der Universitaet zu Kiel, Germany
PDF version available online from the University of Kiel, Germany

Diploma Thesis:

Timm, O., 1999: Über die Beziehung der Eiskerne Zentralgrönlands zu den dekadischen bis interdekadischen Klimaschwankungen des Nordatlantiks
(Central Greenland ice cores and their relation to the decadal and interdecadal variations of the North Atlantic climate), Diploma Thesis [in German], Institut fuer Meereskunde an der Universitaet zu Kiel, Germany.
A Postscript version is available from the IFM-GEOMAR Kiel, Germany

peer-reviewed

accepted/submitted

presentations

other publications

published data

Published Data

Decadal-scale NAO-index reconstruction 1700-1978 (see Timm et al.,2004)
available from WDC for Paleoclimatology
Transient simulation of the last 21,000 years with
orbital, ice-sheet, and greenhouse gas forcing:
atmospheric data available as annual and seasonal means (full 21,000 years),
oceanic data available every 10th year (annual mean),
data archived at the APDRC, (description of the simulation can be found here)
PLEASE CONTACT ME IF YOU WANT ACCESS TO THE DATA!!