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SUMMARY:Taking the &quot\;absolute&quot\; temperature in ice cores: anothe
 r of those dreaded Physics lectures - Professor Hubertus Fischer (Universi
 ty of Bern)
DTSTART:20141201T170000Z
DTEND:20141201T180000Z
UID:TALK54364@talks.cam.ac.uk
CONTACT:Jack Wright
DESCRIPTION:Temperature reconstructions derived from natural climate archi
 ves are in most cases based on „proxy“ information\; for instance some
  property of an organism or ecosystem indirectly influenced by temperature
 . However\, often other processes than temperature also impact the proxy i
 nformation in archives such as growth and seasonality effects\, species-sp
 ecific fractionations\, modern analogue problems or diagenetic alterations
 . Also the classical ice core temperature reconstruction using stable wate
 r isotopes (although being not based on biological information) can be suf
 fering severely from such proxy effects.\n\nIn my talk I will discuss the 
 problems with the classical stable water isotope proxy and will present ne
 w avenues for temperature reconstructions on ice cores based on stringent 
 physical processes. These allow not only the calibration of the classical 
 local temperature records from ice cores\, but also provide information of
  temperature changes in the entire ocean based on a single ice core measur
 ement.
LOCATION:Harker Room 1\, Department of Earth Sciences
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