cc: ms@gpi.uni-kiel.de, laurent.labeyrie@cfr.cnrs-gif.fr, Frank Oldfield date: Tue, 11 Jan 2000 10:12:39 +0100 from: Keith Alverson subject: TRINS Workshop to: Dominique Raynaud , vera.markgraf@pages.unibe.ch, Bruno Messerli , k.briffa@uea.ac.uk, Tom Pedersen To: PAGES EXCOM CC: M. Sarnthein, L. Labeyrie, F. Oldfield Dear Excom, Below find a request for 7k US dollars from M. Sarnthein and J. Kennet for their upcoming workshop "Terminal Millennial Synthesis of Decadal-to-Millennial-Scale Climatic Records of the Last 80 ky." Because their workshop is held only two weeks after our SSC meeting it is impractical to wait until SSC to decide on PAGES funding. For reference, PAGES SSC aloted 10k for IMAGES workshops in 1999, of which 5354 was spent, leaving a surplus of just under 5k. For 2000, 8k has been alocated, and none has yet been spent. Frank and I have discussed this in some detail in the office and recommend that the workshop be supported as requested. However, this clearly requires an excom decision. Please send me a return email by Friday January 14th with your opinion. If I do not hear back from you I will assume you are in favor of funding the full 7k (I will email you again on this topic only if your return emails have conflicting opinions which require another round of thinking) Keith December 20, 1999 Keith Alverson, Science Officer PAGES International Project Office Bärenplatz 2, CH-3011 Bern, Switzerland Dear Keith, We wish to request financial support from PAGES for the meeting we have organized at Trins, Austria (February 16-19, 2000) on "Terminal Millennial Synthesis of Decadal-to-Millennial-Scale Climatic Records of the Last 80 ky." *Objectives of Meeting* The scientific objectives of the workshop will be: o Establish the Record: To create a common master time series of short-term and abrupt climatic events documented in marine and terrestrial records: 1) on a regional scale; 2) on a global scale to determine links between different realms. Records will be correlated and stacked. Geomagnetic events will be used to expedite correlations. o Chronology and Correlation: To tie the ultrahigh-resolution marine climate records to ice core and other varved records of climate change, measured on the calendar-year time scale. Geomagnetic events, and Ar/Ar dating in ashes in ice core to be employed. o Radiocarbon Variability and Chronology: To constrain the temporal and spatial variability of both the oceanic C14-reservoir effect and the cosmogenic C14 production to develop C14 as a high-precision tracer in paleoceanography and to improve chronological resolution in sediment records. Land/sea links to be determined using ash layers, dating of charcoal and pollen sequence correlation. o Origin and Transfer of Signals and Time Dependent Climate Modeling: To better understand telecommunication processes in global transfer of climatic change. Analyses to include frequency analysis of robust cyclicities, used for determination of leads and lags; study of the crucial role of the tropical and/or high-latitude regions. o Pattern Emergence: To evaluate the variability in climate change including rate of variation, spatial vs. temporal evolution, sapropels, and inter- relations with Milankovitch orbital forcing. o Unique Events: To establish the chronology of aperiodic events (e.g. volcanic ash layers, etc.) Meeting Date and Location The meeting will take place at Trins, Tirol, Austria, 30 km south of Innsbruck near the Brenner Pass. The venue (accommodations and sessions) will be at the Hotel Trinserhof between Wednesday, February 16 (noon), and 19th (evening), 2000. The meeting location is ideal since it is easily accessible from Innsbruck airport, the accommodation costs are modest, and the environment conducive for creative and productive thinking. *Chairpersons and Organizing Committee* The meeting will be under the auspices of the SCOR-IMAGES Working Group on "Terminal Millennial Synthesis of Decadal-to-Millennial- Scale Climatic Records of the Last 80 ky". Chairpersons of this working group are: M. Sarnthein, Institut fuer Geowissenschaften, University of Kiel, and J. P. Kennett, Department of Geological Sciences, University of California, Santa Barbara. The Executive Committee for this SCOR-IMAGES Working Group is as follows: M. Sarnthein, Chair J. P. Kennett, Co-Chair E. Boyle, Department of Earth, Atmospheric & Planetary Science, Massachusetts Institute of Technology, Cambridge, MA A. deVernal, Universite du Quebec, Montreal, Canada S. Johnsen, GFY, Copenhagen University, Denmark L. Labeyrie, Centre des Faibles Radioactivites, Laboratoire mixle CNRS-CEA, Gif-sur-Yvette, France J. McManus, Woods Hole Oceanographic Institute, MA J. Negendank, Geoforschungszentrum, Potsdam, Germany N. Shackleton, Godwin Laboratory, Cambridge University, U. K. T. Stocker, University of Bern, Switzerland R. Ramesh, India A. Zhizheng, China *Need for the Meeting* Late Quaternary high-resolution paleoclimatic records of the North Atlantic show that superimposed on gradual, Milankovitch- band isolation cycles were several large, abrupt, multidecadal- scale warmings and coolings (Dansgaard-Oeschger [D-O] cycles) that lasted between 80 and 2500 yr (Dansgaard et al., 1993; Johnsen et al., 1992). The discovery of these events in the Greenland Ice Sheet record and subsequently in marine sediment sequences in different oceanicregions (e.g., Bond et al., 1993; Sarnthein et al., 1999; Hendy and Kennett, 1999) has revolutionized thinking about global climate change. Understanding of the causes of the abrupt millennial-scale oscillatory behavior of the late Quaternary climate system is a key towards better understanding of the feedbacks involved in global climate change and the relative sensitivity of the earth's environmental system in the face of potential anthropogenic forcing. Since the initial discovery a flood of papers has appeared dealing with abrupt climate change on the centennial-millennial time scale. Most of these contributions attempt correlation of the climate records during the last glacial cycle with the Greenland ice core records. However, conclusions about physical connections between these records and that of Greenland are often based on subjective comparisons (Crowley, 1999). However, the chronology of the far-field climate records is often inadequate and correlations highly subjective. An urgent need has arisen to create a standardized stratigraphy and improve the chronology in order to more objectively conduct global comparisons of millennial- scale climate oscillations during the late Quaternary. This, in turn, will represent a critical step toward understanding processes that created the centennial to millennial-scale climatic oscillations. Thus, a number of task groups will be formed during the conference for the following purposes: o to create stacked marine records; o to agree on a joint calendar time scale of annual-layer counted plus non C14 radiometric dated records; o to establish a better calibration scheme of C14 ages 15-55 ka; o to study frequency/periodicity spectra and phase relationships of the major climatic variables; o to constrain and model C14 as paleoceanographic tracer during climatic extremes. *List of Participants* Please see attached. *Workshop Schedule* Please see attached. *Budget Request* We request US $7000 from PAGES to support travel costs of participants. In earlier discussion we requested $5000. However, since then SCOR decided to provide funds for the working group's activities in the second year. They will provide travel funding for the meeting for only two participants from developing countries (China; India). As a result funding is extremely tight to support the meeting and, therefore, we request the additional $2000. We thank you for your assistance. We expect the meeting to be of considerable value toward advancement in this rapidly developing area. Sincerely, James P. Kennett and Michael Sarnthein ................................................................. James P. Kennett Professor of Oceanography Department of Geological Sciences University of California Santa Barbara, CA 93106 (805) 893-3103 (805) 893-2314 (fax) Attachment Converted: "c:\eudora\attach\SCOR-IMAGES_participants-6_2.doc" Attachment Converted: "c:\eudora\attach\SCOR-IMAGES-SCHEDULE-3.doc" ______________________________________________________________________________ Keith Alverson, Science Officer e-mail: alverson@pages.unibe.ch PAGES International Project Office Phone: +41 31 312 3133 Bärenplatz 2, CH-3011 Fax: +41 31 312 3168 Bern, Switzerland Internet: http://www.pages.unibe.ch/ ______________________________________________________________________________