Elisabeth Isaksson

Seniorforsker, seksjonsleder Geologi og geofysikk
Elisabeth Isaksson
E-post
Telefon77 75 05 15
ArbeidsstedTromsø
Tilknytning

Aktuelle aktiviteter

Glaciologist with main interests in recent climate history in both the Arctic and Antarctic using ice cores. Also involved in organic contaminant pollution studies in snow and ice from Svalbard. Partner in EPICA (European Project for Ice Coring in Antarctica) 1996-2004 and EPICA-MIS 2004-2007.

Norwegian Research Council:

  • Svalbard ice cores and climate variability
  • Holocene Antarctic climate variability from ice and marine sediment cores
  • Characterisation of nuclear weapons fallout over Norwegian Territories (Together with Norwegian University of Life Sciences (UMB))
  • Norwegian-United States IPY Scientific Traverse: Climate Variability and Glaciology in East Antarctica

EU projects:

  • 2004-2007 EPICA-MIS
  • 2006-2009 Millennium

Karriere

  • Research position as Glaciologist at The Norwegian Polar Institute February 1995-
  • Research assistant, Stockholm University, Antarctic projects, Oct. 1988-feb. 1995
  • Ph.D., Stockholm University, September 1994. Titel: Climate records from shallow firn cores, Dronning Maud Land, Antarctica.
  • M. of Sc., University of Maine, USA, 1991.
  • Fil. Lic. Stockholm University, Sweden, 1991.
  • B. Sc. Geovetarlinjen, Umeå University, Sweden, 1986.

Referanser

Scientific Refereed Journals

1.    Isaksson, E. 1992. The western Barents Sea and the Svalbard archipelago 18,000 years ago: A finite difference computer model reconstruction. Journal of Glaciology 38 (129), 295-301.

2.    Isaksson, E., and Karlén, W. 1994. High resolution climatic information obtained from short firn cores, Western Dronning Maud Land, Antarctica. Climatic Change 26, 421-434.

3.    Isaksson, E., and Karlén, W. 1994. Spatial and temporal patterns in snow accumulation and oxygen isotopes, Western Dronning Maud Land, Antarctica. Journal of Glaciology 40 (135), 399-409.

4.    Isaksson, E., Karlén, W., Gundestrup, N., Mayewski, P., Whitlow, S., and Twickler, M. 1996. A century of accumulation and temperature changes in Dronning Maud Land, Antarctica.  Journal of Geophysical Research 101 (D3), 7085-7094.

5.    Richardsson, C., Aarholt, E., Hamran, S-E., Holmlund, P.,and Isaksson, E. 1997. Spatial distribution of snow in western Dronning Maud Land, East Antarctica, mapped by a ground based snow radar. Journal of Geophysical Research 102 (B9), 20343-20353.

6.    AlDahan, A.A., Possnert, G., Johnsen, S.J., Clausen, H.B., Isaksson, E., Karlén, W., and Hansson, M. 1998. 60 year long 10Be records from Greenland and Antarctica. Earth and Planetary Sciences 107 (2), 139-147.

7.    Stenberg, M., Isaksson, E., Karlén, W., Hansson, M., Gundestrup, N., Mayewski, P.A.,Twickler, M., and Whitlow, S.E. 1998. Spatial and Seasonal Variability of Snow Chemistry in Western Dronning Maud Land, Antarctica. Annals of Glaciology 27, 378-384.

8.    Van den Broeke, M., Winther, J-G., Isaksson, E., Pinglot, J-F., Eiken, T., and Karlöf, L. 1999. Climate variables along a traverse line in Dronning Maud Land, East Antarctica. Journal of Glaciology 45 (150), 295-302 .

9.    Hagen, J. O., Melvold, K., Eiken, T., Isaksson, E.,  and Lefauconnier, B. 1999. Mass balance methods on Kongsvegen, Svalbard. Geografiska Annaler 81 A(4), 593-601.

10.     Moore, J.C., Pälli, A., Ludwig, F., Blatter, H., Jania, J., Gadek, B., Glowacki, P., Mochnacki, D., and Isaksson, E. 1999. High-resolution hydrothermal Structure of Hansbreen, Spitsbergen mapped by ground-penetrating radar. Journal of Glaciology 45(151), 524-532.

11.     Lefauconnier, B., Hagen, J-O, Ørbæk, J.B., Melvold, K., and Isaksson E. 1999. Glacier balance trends in the Kongsfjord area, western Spitsbergen, Svalbard, in relation to the climate. Polar Research 18(2), 307-313.

12.     Pinglot, J-F., Pourchet, M., Lefauconnier, B., Hagen, J.O., Isaksson, E., Vaikmäe, R., and Kamiyama, K. 1999. Accumulation in Svalbard glaciers deduced from ice cores with nuclear tests and Chernobyl reference layer. Polar Research 18(2), 315-321.

13.     Isaksson, E., Van den Broeke, M., Winther, J-G., Karlöf, L.,  Pinglot, J-F., and Gundestrup, N. 1999. Accumulation and proxy-temperature variability in Dronning Maud Land, Antarctica, determined from shallow firn cores. Annals of Glaciology 29, 17-22.

14.     O’Dwyer, J., Isaksson, E., Vinje, T., Jauhiainen, T., Moore, J., Pohjola, V.,Vaikmäe, R., and van de Wal, R. 2000. Methanesulfonic acid from a Svalbard ice core as an indicator of ocean climate. Geophysical Research Letters 27 (8), 1159-1162.

15.    Washington, R., Hodson, A., Isaksson, E.,  and Macdonald, O. 2000. Northern Hemisphere Teleconnection Indices and the  Mass Balance of Svalbard Glaciers. International Journal of Climatology 20,  473-487.

16.     Holmlund, P., Gjerde, K., Gundestrup, N., Hansson, M., Isaksson, E., Karlöf, L., Nyman, M., Petterson, R., Pinglot, J.F., Reijmer, C., Stenberg, M., Thomassen, M.P.A., van der Veen, C., van de Wal, R.S.W., Wilhelms, F. and Winther, J-G. 2000. Spatial gradients in snow layering and ten metre temperatures at potential EPICA-DML drill sites. Annals of Glaciology 30, 13-19.

17.    Rolstad, C, Whillans, I.M., Hagen, J.O., and Isaksson, E. 2000. Large-scale force budget of an outlet-glacier; Jutulstraumen, Dronning Maud Land. Annals of Glaciology 30, 123-128.

18.     Karlöf, L., Winther, J-G.,  Isaksson, E., Kohler, J., Stenberg, M., Thomassen, M.P.A., Wilhelms, F., Pinglot, J.F., Pettersson, R., v.d. Veen, C., Hansson, M., Holmlund, P., van de Wal, R.S.W. 2000. A 1500 years record of accumulation at Amundsenisen Western Dronning Maud Land, Antarctica, derived from electrical and radioactive measurements on an 120 m ice core. Journal of Geophysical Research 105 (D10), 12,471-12,483.

19.     König, M., Winther, J-G., Isaksson, E. 2001. Measuring Snow and Glacier Ice Properties from Satellite. Reviews of Geophysics 39 (1), 1-27.

20.     Isaksson, E., Pohjola, V., Jauhiainen, T.,  Moore, J., Pinglot, J-F., Vaikmäe, R., van de Wal, R.S.W., Hagen, J-O., Ivask, J., Karlöf, L., Martma, T., Meijer, H.A.J., Mulvaney, R.,Thomassen, M.P.A. Van den Broeke, M. 2001. A new ice core record from Lomonosovfonna, Svalbard: viewing the data between 1920-1997 in relation to present climate and environmental conditions. Journal of Glaciology 47 (157), 335-345.

21.    Isaksson, E., Karlén, W., Mayewski, P., Twickler, M., and Whitlow, S. 2001. A high-altitude snow chemistry record from Amundsenisen, Dronning Maud Land, Antarctica. Journal of Glaciology 47 (158), 489-496.

22.    Pohjola, V., Moore, J., Isaksson, E., Jauhiainen, T, van de Wal, R.S.W., Martma, T., Meijer, H.A.J.,Vaikmäe, R. 2002.  Effects of periodic melting on geochemical and isotopic signals in an ice core from Lomonsovfonna, Svalbard. Journal of Geophysical Research 107 http://dx.doi.org/10.1029/2000JD000149 2002.

23.     Isaksson, E., and Melvold, K. 2002. Trends and patterns in the recent accumulation and proxy-temperature in coastal Dronnning Maud Land, Antarctica  -  interpretations from shallow ice cores. Annals of Glaciology 35, 175-180.

24.     Vehviläinen,  J., Isaksson, E., and Moore, J. 2002. The record  of polyaromatic hydrocarbons (PAH) in an ice core from Svalbard. Annals of Glaciology 35, 257-260.

25.     Kekonen, T., Moore, J., Mulvaney, R.,  Isaksson, E., Pohjola,  V., van de Wal, R.S.W. 2002. A 800 year record of nitrate from the Lomonosovfonna ice core, Svalbard. Annals of Glaciology 35, 261-265.

26.     Pohjola, V., Martma, T., Meijer, H.A.J.,  Moore, J., Isaksson., E., Vaikmäe,. R., and  van de Wal, R.S.W. 2002 Reconstruction of three centuries of annual accumulation rates based on the record of stable isotopes of water from Lomonosovfonna, Svalbard. Annals of Glaciology 35, 57-62.

27.     Wal, v.d. R.S.W., Mulvaney, R., Isaksson, E., Moore, J., Pohjola, V., and Thomassen, M.P.A. 2002. Historical temperature reconstructions from temperature measurements in a medium-length bore hole on the Lomonosovfonna plateau, Svalbard. Annals of Glaciology 35, 371-378.

28.    Pälli, A., Kohler, J., Isaksson, E., Moore, J., Pinglot, J-F., Pohjola, V., Samuelsson, H. 2002. Resolving the spatial variability of snow using ground penetrating radar and shallow ice cores. Journal of Glaciology 48 (162), 417-424.

29.    Pinglot, F., Vaikmae, R., Kamiyama, K. Igarashi, M., Fritzsche, D., Wilhelms, F,. Koerner, R., Henderson, M., Isaksson, E., Winther, J-G., van de Wal, R.S.W., Fournier, M., Bouisset, P., Meijer, H. 2003.  Ice cores from Arctic subpolar glaciers:chronology and post depositional processes deduced from radioactivity measurements. Journal of Glaciology 49 (164), 149 – 158.

30.    Kohler, J, Moore, J., and  Isaksson, E. 2003. Ground-Penetrating radar used to find last year's summer surface in mass balance measurements. Annals of Glaciology 37, 293-297.

31.    Eldhuset, K., Andersen, P.H., Hauge, S., Isaksson, E., Weydahl., D.J. 2003.  ERS tandem INSAR processing for DEM generation, glacier motion estimation and coherence analysis on Svalbard. International Journal of Remote Sensing 24 (7), 1415-1437.

32.    Isaksson, E., Hermanson, M., Hicks, S., Igarashi, M, Kamiyama, K., Moore, J., Motoyama, H., Muir, D., Pohjola, V., Vaikmäe, R., van de Wal, R.S.W., Watanabe, O. 2003. Ice cores from Svalbard - useful archives of past climate and pollution history. Physics and Chemistry of the Earth 28, 1217-1228.

33.    Kaczmarska, M., Isaksson, E., Karlöf, K., Winther, J-G, Kohler, J., Godtliebsen, F., Ringstad Olsen, L., Hofstede, C M.,  van den Broeke, M.R., Van De Wal, R. S.W., and Gundestrup, N. 2004. Accumulation variability derived from an ice core from coastal Dronning Maud Land, Antarctica. Annals of Glaciology 39, 339-345.

34.    Hofstede, C.M., R. S. W. van de Wal, K. Kaspers, M. R. van den Broeke, L. Karlöf, J.-G. Winther, E. Isaksson, G. Lappegard, R. Mulvaney, H. Oerter and F. Wilhelms. 2004. Firn accumulation records for the past 1000 years on the basis of dielectric profiling of six cores from Dronning Maud Land, Antarctica. Journal of Glaciology 50 (169), 279-291.

35.    Bertler, N., Mayewski, P., Aristarain, A., Barrett, P., Becagli, S., Bernardo, R. T., Bo, S., Cunde, X., Curran, M., Dahe, Q., Dixon, D., Ferron, F. A., Fischer, H., Frey, M., Frezzotti, M., Fundel, F., Genthon, C., Gragani, R., Hamilton, G., Handley, M., Hong, S., Isaksson, E., Jiancheng, K., Jiawen, R., Kamiyama, K., Kanamori, S., Kärkäs, E., Karlöf, L., Kaspari, S., Kreutz, K., Kurbatov, A., Meyerson, E., Ming, Y., Mingjun, Z., Motoyama, H., Mulvaney, R., Oerter, H., Osterberg, E., Proposito, M., Pyne, A., Ruth, U., Simoes, J. C., Smith, B., Sneed, S., Teinlä, K., Traufetter, F., Udisti, R., Virkkula, A., Watanabe, O., Williamson, B., Winther, J. -G., Yuansheng, L., Wolff, E., Zhongqin, L., Zielinski, A.(2004). Snow chemistry across Antarctica, Annals of Glaciology 41, 167-179.

36.    Isaksson, E., Kohler, J., Pohjola, V.,  Moore, J., Igarashi, M., Karlöf, L., Martma, T., Meijer, H.A.J,. Motoyama, H.,.Vaikmäe, R., and van de Wal, R.S.W. 2005. Two ice core  δ18O records from Svalbard illustrating climate and sea ice variability over the last 400 years. The Holocene 15 (4), 501-509.

37.    Isaksson, E., Divine, D., Kohler, J., Martma, T., Pohjola, V.,  Motoyama, H., Watanabe, O. 2005. Climate oscillations as recorded in Svalbard ice core δ18O records between 1200-1997 AD. Geografiska Annaler 87A(1), 203-214.

38.    Kekonen, T., J. Moore, P. Perämäki,, R. Mulvaney, E. Isaksson, V. Pohjola and R. van de Wal. 2005.  The 800 year long ion record from the Lomonosovfonna (Svalbard) ice core. Journal of Geophysical Research 110, No. D7, D07304.

39.    Karlöf, L., Isaksson, E., Winther, J-G., Gundestrup, N.,  Meijer, H., A.J., Mulvaney, R., Pourchet, M., Hofstede, C., Lappegard, G.,  Pettersson, R., van den Broeke, M., van de Wal, .R.S.W.. 2005. Accumulation variability over a small area in east Dronning Maud Land, Antarctica, as determined from shallow firn cores and snow pits: some implications for ice-core records. Journal of Glaciology 51 (174), 343-352.

40.    Hermanson, M., Isaksson, E., Teixeira, C., Muir, D.C.G., Compher, K.M., Li, Y-L., Igarashi, M., and Kamiyama, K. 2005. Current-use and legacy pesticide history in the Austfonna ice cap, Svalbard, Norway. Environmental Science & Technology 39, 8163-8169.

41.    Isaksson, E., Kekonen, T., Moore, J., and Mulvaney, R. 2005. The methanesulphonic acid (MSA) record in a Svalbard ice core. Annals of Glaciology 42, 345-351.

42.    Hicks, S., and E. Isaksson. 2006. Assessing source areas of pollutants from studies of fly ash, charcoal, and pollen from Svalbard snow and ice, Journal of Geophysical Research, Vol. 111, No. D2, D02113. http://dx.doi.org/10.1029/2005JD006167

43.    Grinsted, A.,  J. Moore, V. Pohjola, T. Martma, and E. Isaksson. 2006. Svalbard summer melting, continentality, and sea ice extent from the Lomonosovfonna ice core, Journal of Geophysical Research, 111, D07110. http://dx.doi.org/10.1029/2005JD006494

44.    Kaczmarska, M., E. Isaksson, L. Karlöf, O.Brandt, J-G., Winther, R. S.W. van de Wal, M. van den Broeke, S. J. Johnsen. 2006. Antarctic coastal climate interpreted from light transmittance in and ice core record. Antarctic Science 18 (2),  271-278. http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=441687

45.    Moore, J.,Kekonen, T., Grinsted, A.,  Isaksson, E. 2006. Sulphur source inventories from a Svalbard ice core record spanning the industrial revolution. Journal of Geophysical Research 111, D15307. http://dx.doi.org/10.1029/2005JD006453 2006.

46.    Monaghan,A.J., D. H. Bromwich, R. L. Fogt, S-H. Wang, P. A. Mayewski, D. A. Dixon, A. Ekaykin, M. Frezzotti, I. Goodwin, E. Isaksson, S. D. Kaspari, V. I. Morgan, H. Oerter, T. D. Van Ommen, C. J. Van der Veen, & J. Wen.. 2006. Insignificant change in Antarctic snowfall since the International Geophysical Year. Science 313, 827-831.

47.    EPICA community members (E. Isaksson one of 86). 2006. One-to-one coupling of glacial climate variability in Greenland and Antarctica. Nature 444, 9. nov., 195-198.

48.    Rotschky, G., P. Holmlund., E. Isaksson, R. Mulvaney, H. Oerter, M.R. Van den Broeke, J-G., Winther. 2007. A new surface accumulation map for western Dronning Maud Land, Antarctica, from interpolation of point measurements. Journal of Glaciology 53 (182), 385–398

49.    Sjögren, B. Brandt, O., Nuth C., Isaksson, E., Pohjola, V.A., Kohler, J., van de Wal, R.S.W. 2007. Determination of firn density in ice cores using image analysis. Journal of Glaciology 53 (182), 413–419

50.    Virkkunen, K., J. C. Moore, E. Isaksson, V. Pohjola, P. Perämäki, T. Kekonen. 2007. Warm summers and ion concentrations in snow: comparison with present day and Medieval Warm Epoch from snowpits and an ice core from Lomonosovfonna, Svalbard. Journal of Glaciology 53 (183), 623-634.

51.    Eisen, O., M. Frezzotti, C. Genthon, E. Isaksson, O. Magand, M. R. van den Broeke, D. A. Dixon, A. Ekaykin, P. Holmlund, T. Kameda, L. Karlöf, S. Kaspari, V. Y. Lipenkov, H. Oerter, S. Takahashi, and D. G. Vaughan , 2008.  Ground-based measurements of spatial and temporal variability of snow accumulation in East Antarctica, Rev. Geophys. 46, RG2001, http://dx.doi.org/10.1029/2006RG000218 11 April 2008

52.    V. Masson-Delmotte, S. Hou, A. Ekaykin, J. Jouzel, A. Aristarain, R.T. Bernardo, D. Bromwich, O. Cattani, M. Delmotte, S. Falourd, M. Frezzotti, H. Galee, L. Genoni, E. Isaksson, A. Landais, M.M. Helsen, G. Hoffmann, J. Lopez, V. Morgan, H. Motoyama, D. Noone, H. Oerter, J.R.
Petit, A. Royer, R. Uemura, G.A. Schmidt, E. Schlosser, J.C. Simoes, E.J. Steig, B. Stenni, M. Stievenard, M.R. Van den Broeke, R.S.W. Van de Wal, W.J. Vande Berg, F. Vimeux, J.W.C. White. 2008. A Review of Antarctic Surface Snow Isotopic Composition: Observations, Atmospheric Circulation, and Isotopic Modeling. Journal of Climate  21(13), 3359-3387.

53.    Divine, D., Isaksson, E., Pohjola V.A., Meijer, H., van de Wal, R.S.W., Martma , T., Moore, J, Godliebsen. F., and Sjögren, B. 2008. Deuterium excess from a small Arctic ice cap. Journal of Geophysical Research 2008JD010076R.

54.    Divine, D. V.; Isaksson, E.; Kaczmarska, M.; Godtliebsen, F.; Oerter, H.; Schlosser, E.; Johnsen, S. J.; van den Broeke, M.; van de Wal, R. S. W. 2009. Tropical Pacific-high latitude south Atlantic teleconnections as seen in δ18O variability in Antarctic coastal ice cores. Journal of Geophysical Research Vol. 114, No. D11, D11112  http://dx.doi.org/10.1029/2008JD010475

55.    Fauria, M., A. Grinsted, S. Helama, J. Moore, M. Timonen, T. Martma, E. Isaksson, M. Eronen. Unprecedented low twentieth century winter sea ice extent in the Western Nordic Seas since A.D. 1200.2009. Climate Dynamics http://dx.doi.org/10.1007/s00382-009-0610-z

56.    Forsström, S., J. Ström, C. A. Pedersen, E. Isaksson, and S. Gerland (2009), Elemental carbon distribution in Svalbard snow,  Journal of Geophysical Research 114, D19112 http://dx.doi.org/10.1029/2008JD011480

57.    Anschütz, H.; Müller, K.; Isaksson, E.; McConnell, J. R.; Fischer, H.; Miller, H.; Albert, M.; Winther, J.-G. 2009. Revisiting sites of the South Pole Queen Maud Land Traverses in East Antarctica: Accumulation data from shallow firn cores. Journal of Geophysical Research Vol. 114, No. D24, D24106. http://dx.doi.org/10.1029/2009JD012204

58.    D.V. Divine, N. Koç, E. Isaksson, S. Nielsen, X. Crosta, F. Godtliebsen. 2010. Holocene Antarctic climate variability from ice and marine sediment cores: Insights on ocean–atmosphere interaction. Quaternary Science Reviews Volume 29, Issues 1-2, Pages 1-366 (January 2010), 303-312.

59.    Ruggirello, R. M., M. H. Hermanson, E. Isaksson, C. Teixeira, S. Forsström, D. C. G. Muir, V. Pohjola, R. van de Wal, and H. A. J. Meijer (2010), Current use and legacy pesticide deposition to ice caps on Svalbard, Norway. Journal of Geophysical Research 115, D18308 http://dx.doi.org/10.1029/2010JD014005

60.    M. H. Hermanson, E. Isaksson, Forsström, S., C. Teixeira, D.C. G. Muir, V. Pohjola, R. Van de Wal. 2010. Deposition history of brominated flame retardant compounds to an ice core from Holtedahlfonna, Svalbard, Norway. Environmental Science & Technology 44, 7405-7410.

61.    Rotschky, G., Schuler Vikhamar , T., Haarpainter, J., Kohler, J., and Isaksson, E. 2011. Spatio-temporal variability of snow melt on Svalbard during the period 2000-2008 derived from Quickscat/Seawinds scatterometry. Polar Research 2011, 30, 5963 http://dx.doi.org/10.3402/polar.v30i0.5963

62.    D. V. Divine, E. Isaksson, T. Martma , Meijer, J. Moore, V. Pohjola, R.S.W. van de Wal, F. Godtliebsen 2011. Thousand years of winter surface air temperature variations in Svalbard and northern Norway reconstructed from ice core data. Polar Research 2011, 30, 7379 http://dx.doi.org/10.3402/polar.v30i0.7379

63.    D. V. Divine, J. Sjolte, E. Isaksson, H. Meijer, R.S.W. van de Wal, T. Martma, V. Pohjola, F. Godtliebsen. 2011. Modeling the regional climate and isotopic composition of Svalbard precipitation using REMOiso model: a comparison with available GNIP and ice core data. Hydrological Processes accepted.

64.    Anschütz, H., A. Sinisalo, E. Isaksson, J. R. McConnell, S.-E. Hamran, M. M. Bisiaux, D. Pasteris, T. A. Neumann, and J.-G. Winther (2011), Variation of accumulation rates over the last eight centuries on the East Antarctic Plateau derived from volcanic signals in ice cores, J. Geophys. Res., 116, D20103, doi:10.1029/2011JD015753.

65.    van der Wel, L. G., Streurman, H. J., Isaksson, E., Helsen, M., van de Wal, R. S. W., Martma, T., Pohjola, V.A.., Moore, J.C., Meijer, H.A.J. 2011. Using high resolution tritium profiles to quantify the effects of melt on two Spitsbergen ice cores. Journal of Glaciology 57(206), 1087–1097.

66.    Kinnard, C., Zdanowicz, C.M., Fisher, D.A., Isaksson, E., de Vernal, A., and Thompson, L.G. 2011. Reconstructed Arctic sea ice changes over the past 1450 years. Nature Volume: 479,Pages:509–512 Date published: (24 November 2011)DOI: doi:10.1038/nature10581.

67.    Kuhnel, R. T. J. Roberts, M. P. Björkman, E. Isaksson, W. Aas, K. Holmén, J. Ström. 2011. 20 years climatology of NO3- and NH4+ wet deposition at Ny-Ålesund, Svalbard. Advances in Meteorology Volume 2011 (2011), Article ID 406508, 10 pages doi:10.1155/2011/406508.

68.    Schlosser, E., Anschütz, H., Isaksson, E., Martma, T., Divine, D., and Nøst, O-A. Surface mass balance and stable oxygen isotope ratios from shallow firn cores on Fimbulisen, East Antarctica. Annals of Glaciology, accepted. December 2011.

69.    J. Moore, E. Beaudon, Shichang Kang, D. Divine, E. Isaksson, V. Pohjola, R Van de Wal. Dating ice cores using statistical extraction of volcanic sulfate. Journal of Geophysical Research, accepted December 2011.