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Dr. Fredrik Charpentier Ljungqvist

Fredrik Charpentier Ljungqvist

Researcher
Department of History & Bolin Centre for Climate Research
Stockholm University
SE-10691 Stockholm
Sweden

Expertise & Interests

  ...
  +46706620728
  www.bolin.su.se/
  www.medeltid.su.se/fredrik

PAGES interests        2k Network, Arctic2k, Asia2k, Euro-Med2k, LandCover6k, Solar Forcing
 
Topics        Climate dynamics, Climate variability, Human impacts & interactions, Interannual-decadal varaibility, Proxy development, Statistical analysis, Volcanoes
Timescales        Holocene, Last millennia
Regions        Arctic, Europe, Global
Archives        Archeology, Documentary records, Tree rings
Sector        Academia / Education, Outreach/Communication, Research
Discipline        Dendrochronology, Historian, Hydrology, (Paleo)climatology

 

Publications

Ljungqvist, F.C. 2017: Human and societal dimensions of past climate change. in C. Crumley, T. Lennarsson, and A. Westin (eds.), Issues and Concepts in Historical Ecology: If the Past Teaches, What Does the Future Learn?. Cambridge: Cambridge University Press: in press.

Hartl-Meier, C. T. M., Büntgen, U., Smerdon J. E., Zorita, E., Krusic, P. J., Ljungqvist, F.C., Schneider, L., and Esper, J. 2017: Temperature covariance in tree-ring reconstructions and model simulations over the past millennium. Geophysical Research Letters: doi:10.1002/2017GL073239.

Büntgen, U., Eggertsson, Ó., Wacker, L., Sigl, M., Ljungqvist, F.C., Di Cosmo, N., Plunkett, G., Krusic, P.J., Esper, J., Lane, C., Reinig, F., and Oppenheimer, C. 2017: Multi-proxy dating of Iceland's major pre-settlement Katla eruption to 822–823 CE, Geology 45: 783–786.

Wang, J., Yang, B., Ljungqvist, F.C., Luterbacher, J., Osborn, T.J., Briffa, K.R., and Zorita, E. 2017: Internal and external forcing of multidecadal Atlantic climate variability over the past 1,200 years. Nature Geoscience, 10, 512–517.

Yang, B., He, M., Shishov, V., Tychkov, I., Vaganov, E., Rossi, S., Ljungqvist, F.C., Bräuning, A., and Grießinger, J. 2017: New perspective on spring vegetation phenology and global climate change based on Tibetan Plateau tree-ring data. Proceedings of the National Academy of Sciences of the United States of America, 114: 6966–6971.

Büntgen, U., Krusic, P.J., Verstege, A., Barreda, G.S., Wagner, S., Camarero, J.J., Ljungqvist, F.C., Zorita, E., Oppenheimer, C., Konter, O., Tegel, W., Gärtner, H., Cherubini, P., Reinig, F., and Esper, J. 2017: New tree-ring evidence from the Pyrenees reveals western Mediterranean climate variability since medieval times. Journal of Climate, 30: 5295–5318.

Christiansen, B., and Ljungqvist, F.C. 2017: Challenges and perspectives for large-scale temperature reconstructions of the past two millennia. Reviews of Geophysics, 55: 40–96.

Büntgen, U., Myglan, V.S., Ljungqvist, F.C., McCormick, M., Di Cosmo, N., Sigl, M., Jungclaus, J., Wagner, S., Krusic, P.J., Esper, J., Kaplan, J.O., de Vaan, M.A.C., Luterbacher, J., Tegel, W., Solomina, O.N., Nicolussi, K., Oppenheimer, C., Reinig, F., Wacker, L., Kirdyanov, A.V. 2017: Reply to ‘Limited Late Antique cooling’. Nature Geoscience, 10: 243, doi:10.1038/ngeo2927.

Hellmann, L., Nikolaev, A., Ljungqvist, F.C., Churakova, O., Düthorn, E., Esper, J., Hülsmann, L., Kirdyanov, A.V., Moiseev, P., Myglan, V.S., Nikolaev, A.N., Reinig, F., Schweingruber, F., Solomina, O., Tegel, W., and Büntgen, U. 2016: Diverse growth trends and climate responses across Eurasia’s boreal forest. Environmental Research Letters: 11: 074021, doi:10.1088/1748-9326/11/7/074021.

Esper, J., Krusic, P.J., Ljungqvist, F.C., Luterbacher, J., Carrer, M., Cook, E., Kirdyanov, A., Salzer, M., Myglan, V., Timonen, M., Treydte, K., Trouet, V., Villalba, R., Wilson, R.S., Yang, B., and Büntgen, U. 2016: Ranking of tree-ring based temperature reconstructions of the past millennium. Quaternary Science Reviews 145: 134–151.

Ljungqvist, F.C., Krusic, P.J., Sundqvist, H.S., Zorita, E., Brattström, G. & Frank, D. 2016: Northern Hemisphere hydroclimatic variability over the past twelve centuries. Nature 532: 94–98.

Büntgen, U., Myglan, V., Ljungqvist, F.C., McCormick, M., Di Cosmo, N., Sigl, M., Jungclaus, J., Wagner, S., Krusic, P.J., Esper, J., Kaplan, J.O., de Vaan, M.A.C., Luterbacher, J., Wacker, L., Tegel, W. & Kirdyanov, A. 2016: Cooling and societal change during the Late Antique Little Ice Age from 536 to around 660 AD. Nature Geoscience, 9: 231–236.

Luterbacher, J., Werner J.P., Smerdon, J.E., Barriopedro, D., Fernández-Donado, L., González-Rouco, F.J., Ljungqvist, F.C., Büntgen, U., Zorita, E., Wagner, S., Esper J., Frank, D., Barriendos, M., Bertolin, C., Bothe, O., Brázdil, R., Camuffo, D., Dobrovolný, P., Gagen, M., García-Bustamante, E., Ge, Q., Gómez-Navarro, J.J., Guiot, J., Hao, Z., Hegerl, G., Holmgren, K., Jungclaus, J.H., Klimenko, V.V., Martín-Chivelet, J., McCarroll, D., Pfister, C., Roberts, N., Schindler, A., Schurer, A., Solomina, O., Toreti, A., von Gunten, L., Wahl, E., Wanner, H., Wetter, O., Xoplaki, E., Yuan, N., Zanchettin, D., Zhang, H. & Zerefos, C. 2016: European summer temperatures since Roman times. Environmental Research Letters, 11: 024001, doi:10.1088/1748-9326/11/1/024001.

Yang, F., Wang, N., Shi, F., and Ljungqvist, F.C., Zhao, S. & Liu, T. 2016: The spatial distribution of precipitation over the West Qinling region, China, AD 1470–2000. Palaeogeography, Palaeoclimatology, Palaeoecology, 443: 278–285.

Ljungqvist, F.C. 2015: Hydroclimate and Temperature Co-variability – Past, Present and Future. in M. Trnka & M. Hayes (eds.), Evaluation of drought and drought impacts through interdisciplinary methods. Brno: Global Change Research Centre AS CR v.v.i.: 6–10.

Xu, C., Chen, B.J.W., Abades, S., Luís, R., Teng, S., Ljungqvist, F.C., Huang, Z. Y.X. & Liu, M. 2015: Macroecological factors explain large-scale spatial population patterns of ancient agriculturalists. Global Ecology and Biogeography, 24: 1030–1039.

Shi, F., Ge, Q., Yang, B., Li, J., Yang, F., Ljungqvist, F.C., Solomina, O., Nakatsuka, T., Wang, N., Zhao, S., Xu, C., Fang, K., Sano, M., Chu, G., Fan, Z., Gaire, N.P. & Zafar, M.U. 2015: A multi-proxy reconstruction of spatial and temporal variations in Asian summer temperatures over the last millennium. Climatic Change, 131: 663–676.

Büntgen, U., Trnka, M., Krusic, P.J., Kyncl, T., Kyncl, J., Luterbacher, J., Zorita, E., Ljungqvist, F.C., Auer, I., Konter, O., Schneider, L., Tegel, W., Stepánek, P., Brönnimann, S., Hellmann, L., Nievergelt, D. & Esper, J. 2015: Tree-Ring Amplification of the Early Nineteenth-Century Summer Cooling in Central Europe. Journal of Climate, 28: 5272–5288.

Wang, J., Yang, B. & Ljungqvist, F.C. 2015: A Millennial Summer Temperature Reconstruction for the Eastern Tibetan Plateau from Tree Ring Width. Journal of Climate, 28: 5289–5304.

Taricco, C., Alessio, S., Ljungqvist, F.C., Mancuso, S., and Ghil, M. Multispectral analysis of Northern Hemisphere temperature records over the last five millennia. 2015: Climate Dynamics, 45: 83–104.

Sundqvist, H.S., Kaufman, D.S., McKay, N.P., Balascio, N.L., Briner, J.P., Cwynar, L.C., Sejrup, H.P., Seppä, H., Subetto, D.A., Andrews, J.T., Axford, Y., Bakke, J., Birks, H.J.B., Brooks, S.J., de Vernal, A., Jennings, A.E., Ljungqvist, F.C., Rühland, K.M., Saenger, C., Smol, J.P. & Viau, A.E. 2014: Arctic Holocene proxy climate database – New approaches to assessing geochronological accuracy and encoding climate variables. Climate of the Past, 10: 1605–1631.

Yang, B., Kang, S., Ljungqvist, F.C., Zhao, Y., He, M. & Qin. C. 2014. Drought variability at the northern fringe of the Asian summer monsoon region over the past millennia. Climate Dynamics, 43: 845–859.

Wang, J., Yang, B., Ljungqvist, F.C. & Zhao, Y. 2013. The relationship between the Atlantic Multidecadal Oscillation and temperature variability in China during the last millennium. Journal of Quaternary Science, 28: 653–658.

PAGES 2k Consortium (Ahmed, M., Anchukaitis, K.J., Asrat, A., Borgaonkar, H.P. Braida, M., Buckley, B.M., Büntgen, U., Chase, B.M., Christie, D.A. Cook, E.R., Curran, M.A.J., Diaz, H.F., Esper, J., Fan, Z.-X, Gaire, N.P. Ge, Q., Gergis, J., González-Rouco, J.F., Goosse, H., Grab, S.W., Graham, R., Graham, N., Grosjean, M., Hanhijärvi, S.T., Kaufman, D.S., Kiefer, T., Kimura, K., Korhola, A.A., Krusic, P.J., Lara, A., Lézine, A.-M., Ljungqvist, F.C., Lorrey, A.M., Luterbacher, J., Masson-Delmotte, V., McCarroll, D., McConnell, J.R., McKay, N.P., Morales, M.S., Moy, A.D., Mulvaney, R., Mundo, I.A., Nakatsuka, T., Nash, D.J., Neukom, R., Nicholson, S.E., Oerter, H., Palmer, J.G., Phipps, S.J., Prieto, M.R., Rivera, A., Sano, M., Severi, M., Shanahan, T.M., Shao, X., Shi, F., Sigl, M., Smerdon, J.E., Solomina, O.N., Steig, E.J., Stenni, B., Thamban, M., Trouet, V., Turney, C.S.M., Umer, M., van Ommen, T., Verschuren, D., Viau, A.E., Villalba, R., Vinther, B.M., von Gunten, L., Wagner, S., Wahl, E.R., Wanner, H., Werner, J.P., White, J.W.C., Yasue, K. & Zorita, E.). 2013: Continental-scale temperature variability during the past two millennia. Nature Geoscience, 6: 339–346.

Matyasovszky, I. & Ljungqvist, F.C. 2013: Abrupt temperature changes during the last 1,500 years. Theoretical and Applied Climatology, 112: 215–225.

Yang, F., Wang, N., Shi, F., Ljungqvist, F.C., Wang, S., Fan, Z. & Lu, J. 2013: Multi-proxy temperature reconstruction from the West Qinling Mountains, China, for the past 500 years. PLoS ONE, 8: e57638, doi:10.1371/journal.pone.0057638.

Ljungqvist, F.C., Krusic, P.J., Brattström, G. & Sundqvist, H.S. 2012: Northern Hemisphere temperature patterns in the last 12 centuries. Climate of the Past, 8: 227–249.

Shi, F., Yang, B., Ljungqvist, F.C. & Yang, F. 2012: A new Arctic multi-proxy summer temperature reconstruction covering the past 1400 years with annual resolution. Climate Research, 54: 113–128.

Christiansen, B. & Ljungqvist, F.C. 2012: The extra-tropical Northern Hemisphere temperature in the last two millennia: Reconstructions of low-frequency variability. Climate of the Past, 8: 765–786.

Støve, B., Ljungqvist, F.C. & Thejll, P. 2012: A test for non-linearity in temperature proxy records. Journal of Climate, 25: 7173–7186.

Ljungqvist, F.C. 2011: The Spatio-Temporal Pattern of the Mid-Holocene Thermal Maximum. Geografie, 116: 91–110.

Christiansen, B. & Ljungqvist, F.C. 2011: Reconstruction of the extratropical NH mean temperature over the last millennium with a method that preserves low-frequency variability. Journal of Climate, 24: 6013–6034.

Ljungqvist, F.C. 2010: A new reconstruction of temperature variability in the extra-tropical Northern Hemisphere during the last two millennia. Geografiska Annaler: Physical Geography, 92A: 339–351.

Ljungqvist, F.C. 2010: A regional approach to the Medieval Warm Period and the Little Ice Age. in S.W. Simard & M.E. Austin (eds.), Climate change and variability. Rijeka: Sciyo: 1–26.

Ljungqvist, F.C. 2009: Global nedkylning: Klimatet och människan under 10 000 år. Stockholm: Norstedts: 336 pages [popular science book in Swedish].

Ljungqvist, F.C. 2009: Temperature proxy records covering the last two millennia: a tabular and visual overview. Geografiska Annaler: Physical Geography, 91A: 11–29.