Christoph Kull

Organisation de Coopération et de Développement Economiques

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Heinz Veit

University of Bern

Keith Alverson

Technology Centre

Roland Zech

Friedrich Schiller University Jena

Patrick Ginot

Université Grenoble Alpes

Peter W. Kubik

ETH Zurich

Keith R. Briffa

University of East Anglia

Thorsten Kiefer

Sorbonne Université

U. Schotterer

University of Bern

P. D. Jones

The University of Texas MD Anderson Cancer Center

Heinz Wanner

University of Bern

Cooperative Institutions

University of Bern

Organisation de Coopération et de Développement Economiques

Swiss Academy of Sciences

ETH Zurich

Australian Communications and Media Authority

Centre National de la Recherche Scientifique

Oeschger Centre for Climate Change Research

Past Global Changes

University of Helsinki

Laboratoire de Glaciologie et Géophysique de l’Environnement

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The EPICA challenge to the Earth system modeling community

Eos (2004)

Erick W. Wolff Jerome Chappella Hubertus Fischer Christoph Kull Heinrich Miller

One of our major aims as Earth systems scientists is to predict how the Earth will behave in the future, particularly in the face of changes imposed upon it as a result of human activities. These predictions are made using models and concepts that are in part derived from observation of how the system has behaved in the past. However, these observations, which come from paleo‐records, are also one important tool for validating the models. The imminent appearance of a new ice core data set presents a unique opportunity for a test of our understanding, particularly of the climate/carbon system.

Earth system science

Ice core

10.1029/2004eo380003

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Citations (26)

PAGES news (2002)

T. W. D. Edwards Christoph Kull Keith Alverson Georg Kaser Henry Osmaston

View from the Gross Fiescherhorn (4048 m) in the Swiss Alps towards the Fiescherhorn plateau (3950 m) in 1994.Two ice cores were drilled at this site in 1987 and 2000 (see page 6).The high peak

10.22498/pages.10.2

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Past millennia climate variability

Eos (2006)

Michael Mann Keith R. Briffa P. D. Jones Thorsten Kiefer Christoph Kull

Human influences on climate operate against a background of long‐term natural climate variability. Our ability to characterize this long‐term variability and to distinguish it from climate change due to human activities is limited by the relative shortness of the instrumental record. Thus, investigators turn to a combination of indirect paleoclimate proxy evidence and theoretical climate models to ascertain the nature and causes of climate changes on centennial and longer timescales. Particularly relevant in this context is the time frame of the last few millennia, which is termed the ‘Late Holocene.’ During this period, the fundamental external boundary conditions on the climate, such as the configuration of the continents, the size and locations of the major ice sheets, and the mean radiative forcing due to changes in Earth‐orbital geometry, are similar to those today. Study of this interval thus allows insights into the natural variability that might be expected today in the absence of human influences.

Paleoclimatology

Climate oscillation

Climatic variability

Proxy (statistics)

Forcing (mathematics)

10.1029/2006eo470005

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Citations (9)

Climatic Change (2002)

Christoph Kull Martín Grosjean Heinz Veit

Westerlies

Last Glacial Maximum

Paleoclimatology

Glacier mass balance

10.1023/a:1013746917257

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Citations (90)

Pages

Encyclopedia of earth sciences series/Encyclopedia of earth sciences (2009)

Keith Alverson Christoph Kull

10.1007/978-1-4020-4411-3_164

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Citations (1)

Book Review: Earth palaeoenvironments: records preserved in mid- and low- latitude glaciers

The Holocene (2005)

Christoph Kull

Low latitude

10.1177/095968360501500514

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Effects of postdepositional processes on snow composition of a subtropical glacier (Cerro Tapado, Chilean Andes)

Journal of Geophysical Research Atmospheres (2001)

Patrick Ginot Christoph Kull Margit Schwikowski U. Schotterer H. W. Gäggeler

In order to study the effects of postdepositional processes on snow chemistry a surface snow experiment was performed on the Cerro Tapado summit glacier in northern Chile, a subtropical glacier site presumably influenced by strong sublimation. Chemical species irreversibly trapped in the snow were significantly enriched in the surface layer by sublimation of the water matrix (Cl − , SO 4 2− , and K + ) and by sublimation and dry deposition (Ca 2+ , Mg 2+ , Na + , CH 3 SO 3 − , and C 2 O 4 2− ). Species present in a volatile form, such as HCOOH, CH 3 COOH, and HNO 3 , were released from the snow. This indicates that not only particular meteorological conditions influence the modification of snow composition but so does the chemical form of the studied species (salts or volatile). From the enrichment in concentrations of irreversibly deposited chemical species the sublimation rate was quantified as 1.9 mm weq d −1 , which agrees with the sublimation rates determined by lysimeters and by mass balance modeling.

Sublimation

Lysimeter

Meltwater

Firn

Ice core

10.1029/2000jd000071

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Citations (67)

Quarternary environmental and climate changes in the Central Andes

Jan-Hendrik May Roland Zech Andreas Schellenberger Christoph Kull Heinz Veit

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