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8 results on '"Solomina, Olga N"'

1. Reply to 'Limited Late Antique cooling'

Author

Büntgen, Ulf, Myglan, Vladimir S., Charpentier Ljungqvist, Fredrik, McCormick, Michael, Di Cosmo, Nicola, Sigl, Michael, Jungclaus, Johann, Wagner, Sebastian, Krusic, Paul J., Esper, Jan, Kaplan, Jed O., de Vaan, Michiel A. C., Luterbacher, Jürg, Wacker, Lukas, Tegel, Willy, Solomina, Olga N., Nicolussi, Kurt, Oppenheimer, Clive, Reinig, Frederick, Kirdyanov, Alexander V., Büntgen, Ulf, Myglan, Vladimir S., Charpentier Ljungqvist, Fredrik, McCormick, Michael, Di Cosmo, Nicola, Sigl, Michael, Jungclaus, Johann, Wagner, Sebastian, Krusic, Paul J., Esper, Jan, Kaplan, Jed O., de Vaan, Michiel A. C., Luterbacher, Jürg, Wacker, Lukas, Tegel, Willy, Solomina, Olga N., Nicolussi, Kurt, Oppenheimer, Clive, Reinig, Frederick, and Kirdyanov, Alexander V.

Published
2017
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2. Holocene glacier fluctuations

Author

Solomina, Olga N., Bradley, Raymond S., Hodgson, Dominic A., Ivy-Ochs, Susan, Jomelli, Vincent, Mackintosh, Andrew N., Nesje, Atle, Owen, Lewis A., Wanner, Heinz, Wiles, Gregory C., Young, Nicolas E., Solomina, Olga N., Bradley, Raymond S., Hodgson, Dominic A., Ivy-Ochs, Susan, Jomelli, Vincent, Mackintosh, Andrew N., Nesje, Atle, Owen, Lewis A., Wanner, Heinz, Wiles, Gregory C., and Young, Nicolas E.

Abstract

A global overview of glacier advances and retreats (grouped by regions and by millennia) for the Holocene is compiled from previous studies. The reconstructions of glacier fluctuations are based on 1) mapping and dating moraines defined by 14C, TCN, OSL, lichenometry and tree rings (discontinuous records/time series), and 2) sediments from proglacial lakes and speleothems (continuous records/time series). Using 189 continuous and discontinuous time series, the long-term trends and centennial fluctuations of glaciers were compared to trends in the recession of Northern and mountain tree lines, and with orbital, solar and volcanic studies to examine the likely forcing factors that drove the changes recorded. A general trend of increasing glacier size from the early–mid Holocene, to the late Holocene in the extra-tropical areas of the Northern Hemisphere (NH) is related to overall summer temperature, forced by orbitally-controlled insolation. The glaciers in New Zealand and in the tropical Andes also appear to follow the orbital trend, i.e., they were decreasing from the early Holocene to the present. In contrast, glacier fluctuations in some monsoonal areas of Asia and southern South America generally did not follow the orbital trends, but fluctuated at a higher frequency possibly triggered by distinct teleconnections patterns. During the Neoglacial, advances clustered at 4.4–4.2 ka, 3.8–3.4 ka, 3.3–2.8 ka, 2.6 ka, 2.3–2.1 ka, 1.5–1.4 ka, 1.2–1.0 ka, 0.7–0.5 ka, corresponding to general cooling periods in the North Atlantic. Some of these episodes coincide with multidecadal periods of low solar activity, but it is unclear what mechanism might link small changes in irradiance to widespread glacier fluctuations. Explosive volcanism may have played a role in some periods of glacier advances, such as around 1.7–1.6 ka (coinciding with the Taupo volcanic eruption at 232 ± 5 CE) but the record of explosive volcanism is poorly known through the Holocene. The compilation of a

Published
2015

3. Holocene glacier fluctuations

Author

Solomina, Olga N., Bradley, Raymond S., Hodgson, Dominic A., Ivy-Ochs, Susan, Jomelli, Vincent, Mackintosh, Andrew N., Nesje, Atle, Owen, Lewis A., Wanner, Heinz, Wiles, Gregory C., Young, Nicolas E., Solomina, Olga N., Bradley, Raymond S., Hodgson, Dominic A., Ivy-Ochs, Susan, Jomelli, Vincent, Mackintosh, Andrew N., Nesje, Atle, Owen, Lewis A., Wanner, Heinz, Wiles, Gregory C., and Young, Nicolas E.

Abstract

A global overview of glacier advances and retreats (grouped by regions and by millennia) for the Holocene is compiled from previous studies. The reconstructions of glacier fluctuations are based on 1) mapping and dating moraines defined by 14C, TCN, OSL, lichenometry and tree rings (discontinuous records/time series), and 2) sediments from proglacial lakes and speleothems (continuous records/time series). Using 189 continuous and discontinuous time series, the long-term trends and centennial fluctuations of glaciers were compared to trends in the recession of Northern and mountain tree lines, and with orbital, solar and volcanic studies to examine the likely forcing factors that drove the changes recorded. A general trend of increasing glacier size from the early–mid Holocene, to the late Holocene in the extra-tropical areas of the Northern Hemisphere (NH) is related to overall summer temperature, forced by orbitally-controlled insolation. The glaciers in New Zealand and in the tropical Andes also appear to follow the orbital trend, i.e., they were decreasing from the early Holocene to the present. In contrast, glacier fluctuations in some monsoonal areas of Asia and southern South America generally did not follow the orbital trends, but fluctuated at a higher frequency possibly triggered by distinct teleconnections patterns. During the Neoglacial, advances clustered at 4.4–4.2 ka, 3.8–3.4 ka, 3.3–2.8 ka, 2.6 ka, 2.3–2.1 ka, 1.5–1.4 ka, 1.2–1.0 ka, 0.7–0.5 ka, corresponding to general cooling periods in the North Atlantic. Some of these episodes coincide with multidecadal periods of low solar activity, but it is unclear what mechanism might link small changes in irradiance to widespread glacier fluctuations. Explosive volcanism may have played a role in some periods of glacier advances, such as around 1.7–1.6 ka (coinciding with the Taupo volcanic eruption at 232 ± 5 CE) but the record of explosive volcanism is poorly known through the Holocene. The compilation of a

Published
2015

4. Continental-scale temperature variability during the past two millennia

Author

UCL - SST/ELI/ELIC - Earth & Climate, Ahmed, Moinuddin, Anchukaitis, Kevin J., Asrat, Asfawossen, Borgaonkar, Hemant P., Braida, Martina, Buckley, Brendan M., Büntgen, Ulf, Chase, Brian M., Christie, Duncan A., Cook, Edward R., Curran, Mark A. J., Diaz, Henry F., Esper, Jan, Fan, Ze-Xin, Gaire, Narayan P., Ge, Quansheng, Gergis, Joëlle, González-Rouco, J Fidel, Goosse, Hugues, Grab, Stefan W., Graham, Nicholas, Graham, Rochelle, Grosjean, Martin, Hanhijärvi, Sami T., Kaufman, Darrell S., Kiefer, Thorsten, Kimura, Katsuhiko, Korhola, Atte A., Krusic, Paul J., Lara, Antonio, Lézine, Anne-Marie, Ljungqvist, Fredrik C., Lorrey, Andrew M., Luterbacher, Jürg, Masson-Delmotte, Valérie, McCarroll, Danny, McConnell, Joseph R., McKay, Nicholas P., Morales, Mariano S., Moy, Andrew D., Mulvaney, Robert, Mundo, Ignacio A., Nakatsuka, Takeshi, Nash, David J., Neukom, Raphael, Nicholson, Sharon E., Oerter, Hans, Palmer, Jonathan G., Phipps, Steven J., Prieto, Maria R., Rivera, Andres, Sano, Masaki, Severi, Mirko, Shanahan, Timothy M., Shao, Xuemei, Shi, Feng, Sigl, Michael, Smerdon, Jason E., Solomina, Olga N., Steig, Eric J., Stenni, Barbara, Thamban, Meloth, Trouet, Valerie, Turney, Chris S.M., Umer, Mohammed, van Ommen, Tas, Verschuren, Dirk, Viau, Andre E., Villalba, Ricardo, Vinther, Bo M., von Gunten, Lucien, Wagner, Sebastian, Wahl, Eugene R., Wanner, Heinz, Werner, Johannes P., White, James W.C., Yasue, Koh, Zorita, Eduardo, UCL - SST/ELI/ELIC - Earth & Climate, Ahmed, Moinuddin, Anchukaitis, Kevin J., Asrat, Asfawossen, Borgaonkar, Hemant P., Braida, Martina, Buckley, Brendan M., Büntgen, Ulf, Chase, Brian M., Christie, Duncan A., Cook, Edward R., Curran, Mark A. J., Diaz, Henry F., Esper, Jan, Fan, Ze-Xin, Gaire, Narayan P., Ge, Quansheng, Gergis, Joëlle, González-Rouco, J Fidel, Goosse, Hugues, Grab, Stefan W., Graham, Nicholas, Graham, Rochelle, Grosjean, Martin, Hanhijärvi, Sami T., Kaufman, Darrell S., Kiefer, Thorsten, Kimura, Katsuhiko, Korhola, Atte A., Krusic, Paul J., Lara, Antonio, Lézine, Anne-Marie, Ljungqvist, Fredrik C., Lorrey, Andrew M., Luterbacher, Jürg, Masson-Delmotte, Valérie, McCarroll, Danny, McConnell, Joseph R., McKay, Nicholas P., Morales, Mariano S., Moy, Andrew D., Mulvaney, Robert, Mundo, Ignacio A., Nakatsuka, Takeshi, Nash, David J., Neukom, Raphael, Nicholson, Sharon E., Oerter, Hans, Palmer, Jonathan G., Phipps, Steven J., Prieto, Maria R., Rivera, Andres, Sano, Masaki, Severi, Mirko, Shanahan, Timothy M., Shao, Xuemei, Shi, Feng, Sigl, Michael, Smerdon, Jason E., Solomina, Olga N., Steig, Eric J., Stenni, Barbara, Thamban, Meloth, Trouet, Valerie, Turney, Chris S.M., Umer, Mohammed, van Ommen, Tas, Verschuren, Dirk, Viau, Andre E., Villalba, Ricardo, Vinther, Bo M., von Gunten, Lucien, Wagner, Sebastian, Wahl, Eugene R., Wanner, Heinz, Werner, Johannes P., White, James W.C., Yasue, Koh, and Zorita, Eduardo

Abstract

Past global climate changes had strong regional expression. To elucidate their spatio-temporal pattern, we reconstructed past temperatures for seven continental-scale regions during the past one to two millennia. The most coherent feature in nearly all of the regional temperature reconstructions is a long-term cooling trend, which ended late in the nineteenth century. At multi-decadal to centennial scales, temperature variability shows distinctly different regional patterns, with more similarity within each hemisphere than between them. There were no globally synchronous multi-decadal warm or cold intervals that define a worldwide Medieval Warm Period or Little Ice Age, but all reconstructions show generally cold conditions between ad 1580 and 1880, punctuated in some regions by warm decades during the eighteenth century. The transition to these colder conditions occurred earlier in the Arctic, Europe and Asia than in North America or the Southern Hemisphere regions. Recent warming reversed the long-term cooling; during the period ad 1971–2000, the area-weighted average reconstructed temperature was higher than any other time in nearly 1,400 years.

Published
2013

5. Continental-scale temperature variability during the past two millennia

Author

PAGES-2k-Network, Ahmed, Moinuddin, Anchukaitis, Kevin J., Asrat, Asfawossen, Borgaonkar, Hemant, Braida, Martina, Buckley, Brendan M., Büntgen, Ulf, Chase, Brian M., Christie, Duncan A., Cook, Edward R., Curran, Mark A. J., Diaz, Henry F., Esper, Jan, Fan, Ze-Xin, Gaire, Narayan P., Ge, Quansheng, Gergis, Joëlle, González-Rouco, J Fidel, Goosse, Hueghes, Grab, Stefan W., Graham, Nicholas, Graham, Rochelle, Grosjean, Martin, Hanhijärvi, Sami T., Kaufman, Darrell S., Kiefer, Thorsten, Kimura, Katsuhiko, Korhola, Atte A., Krusic, Paul J., Lara, Antonio, Lézine, Anne-Marie, Ljungqvist, Fredrik C., Lorrey, Andrew M., Luterbacher, Jürg, Masson-Delmotte, Valerie, McCarroll, Danny, McConnell, Joseph R., McKay, Nicholas P., Morales, Mariano S., Moy, Andrew D., Mulvaney, Robert, Mundo, Ignacio A., Nakatsuka, Takeshi, Nash, David J., Neukom, Raphael, Nicholson, Sharon E., Oerter, Hans, Palmer, Jonathan G., Phipps, Steven J., Prieto, Maria R., Rivera, Andres, Sano, Masaki, Severi, Mirko, Shanahan, Timothy M., Shao, Xuemei, Shi, Feng, Sigl, Michael, Smerdon, Jason E., Solomina, Olga N., Steig, Eric J., Stenni, Barbara, Thamban, Meloth, Trouet, Valerie, Turney, Chris S.M., Umer, Mohammed, Van Ommen, Tas, Verschuren, Dirk, Viau, Andre E., Villalba, Ricardo, Vinther, Bo M., von Gunten, Lucien, Wagner, Sebastian, Wahl, Eugene R., Wanner, Heinz, Werner, Johannes P., White, James W.C., Yasue, Koh, Zorita, Eduardo, PAGES-2k-Network, Ahmed, Moinuddin, Anchukaitis, Kevin J., Asrat, Asfawossen, Borgaonkar, Hemant, Braida, Martina, Buckley, Brendan M., Büntgen, Ulf, Chase, Brian M., Christie, Duncan A., Cook, Edward R., Curran, Mark A. J., Diaz, Henry F., Esper, Jan, Fan, Ze-Xin, Gaire, Narayan P., Ge, Quansheng, Gergis, Joëlle, González-Rouco, J Fidel, Goosse, Hueghes, Grab, Stefan W., Graham, Nicholas, Graham, Rochelle, Grosjean, Martin, Hanhijärvi, Sami T., Kaufman, Darrell S., Kiefer, Thorsten, Kimura, Katsuhiko, Korhola, Atte A., Krusic, Paul J., Lara, Antonio, Lézine, Anne-Marie, Ljungqvist, Fredrik C., Lorrey, Andrew M., Luterbacher, Jürg, Masson-Delmotte, Valerie, McCarroll, Danny, McConnell, Joseph R., McKay, Nicholas P., Morales, Mariano S., Moy, Andrew D., Mulvaney, Robert, Mundo, Ignacio A., Nakatsuka, Takeshi, Nash, David J., Neukom, Raphael, Nicholson, Sharon E., Oerter, Hans, Palmer, Jonathan G., Phipps, Steven J., Prieto, Maria R., Rivera, Andres, Sano, Masaki, Severi, Mirko, Shanahan, Timothy M., Shao, Xuemei, Shi, Feng, Sigl, Michael, Smerdon, Jason E., Solomina, Olga N., Steig, Eric J., Stenni, Barbara, Thamban, Meloth, Trouet, Valerie, Turney, Chris S.M., Umer, Mohammed, Van Ommen, Tas, Verschuren, Dirk, Viau, Andre E., Villalba, Ricardo, Vinther, Bo M., von Gunten, Lucien, Wagner, Sebastian, Wahl, Eugene R., Wanner, Heinz, Werner, Johannes P., White, James W.C., Yasue, Koh, and Zorita, Eduardo

Abstract

Past global climate changes had strong regional expression. To elucidate their spatio-temporal pattern, we reconstructed past temperatures for seven continental-scale regions during the past one to two millennia. The most coherent feature in nearly all of the regional temperature reconstructions is a long-term cooling trend, which ended late in the nineteenth century. At multi-decadal to centennial scales, temperature variability shows distinctly different regional patterns, with more similarity within each hemisphere than between them. There were no globally synchronous multi-decadal warm or cold intervals that define a worldwide Medieval Warm Period or Little Ice Age, but all reconstructions show generally cold conditions between ad 1580 and 1880, punctuated in some regions by warm decades during the eighteenth century. The transition to these colder conditions occurred earlier in the Arctic, Europe and Asia than in North America or the Southern Hemisphere regions. Recent warming reversed the long-term cooling; during the period ad 1971–2000, the area-weighted average reconstructed temperature was higher than any other time in nearly 1,400 years.

Published
2013

6. Continental-scale temperature variability during the past two millennia

Author

Ahmed, Moinuddin, Anchukaitis, Kevin J., Asrat, Asfawossen, Borgaonkar, Hemant P., Braida, Martina, Buckley, Brendan M., Büntgen, Ulf, Chase, Brian M., Christie, Duncan A., Cook, Edward R., Curran, Mark A.J., Diaz, Henry F., Esper, Jan, Fan, Ze-Xin, Gaire, Narayan P., Ge, Quansheng, Gergis, Joëlle, González-Rouco, J. Fidel, Goosse, Hugues, Grab, Stefan W., Graham, Nicholas, Graham, Rochelle, Grosjean, Martin, Hanhijärvi, Sami T., Kaufman, Darrell S., Kiefer, Thorsten, Kimura, Katsuhiko, Korhola, Atte A., Krusic, Paul J., Lara, Antonio, Lézine, Anne-Marie, Ljungqvist, Fredrik C., Lorrey, Andrew M., Luterbacher, Jürg, Masson-Delmotte, Valérie, McCarroll, Danny, McConnell, Joseph R., McKay, Nicholas P., Morales, Mariano S., Moy, Andrew D., Mulvaney, Robert, Mundo, Ignacio A., Nakatsuka, Takeshi, Nash, David J., Neukom, Raphael, Nicholson, Sharon E., Oerter, Hans, Palmer, Jonathan G., Phipps, Steven J., Prieto, Maria R., Rivera, Andres, Sano, Masaki, Severi, Mirko, Shanahan, Timothy M., Shao, Xuemei, Shi, Feng, Sigl, Michael, Smerdon, Jason E., Solomina, Olga N., Steig, Eric J., Stenni, Barbara, Thamban, Meloth, Trouet, Valerie, Turney, Chris S.M., Umer, Mohammed, van Ommen, Tas, Verschuren, Dirk, Viau, Andre E., Villalba, Ricardo, Vinther, Bo M., von Gunten, Lucien, Wagner, Sebastian, Wahl, Eugene R., Wanner, Heinz, Werner, Johannes P., White, James W.C., Yasue, Koh, Zorita, Eduardo, Ahmed, Moinuddin, Anchukaitis, Kevin J., Asrat, Asfawossen, Borgaonkar, Hemant P., Braida, Martina, Buckley, Brendan M., Büntgen, Ulf, Chase, Brian M., Christie, Duncan A., Cook, Edward R., Curran, Mark A.J., Diaz, Henry F., Esper, Jan, Fan, Ze-Xin, Gaire, Narayan P., Ge, Quansheng, Gergis, Joëlle, González-Rouco, J. Fidel, Goosse, Hugues, Grab, Stefan W., Graham, Nicholas, Graham, Rochelle, Grosjean, Martin, Hanhijärvi, Sami T., Kaufman, Darrell S., Kiefer, Thorsten, Kimura, Katsuhiko, Korhola, Atte A., Krusic, Paul J., Lara, Antonio, Lézine, Anne-Marie, Ljungqvist, Fredrik C., Lorrey, Andrew M., Luterbacher, Jürg, Masson-Delmotte, Valérie, McCarroll, Danny, McConnell, Joseph R., McKay, Nicholas P., Morales, Mariano S., Moy, Andrew D., Mulvaney, Robert, Mundo, Ignacio A., Nakatsuka, Takeshi, Nash, David J., Neukom, Raphael, Nicholson, Sharon E., Oerter, Hans, Palmer, Jonathan G., Phipps, Steven J., Prieto, Maria R., Rivera, Andres, Sano, Masaki, Severi, Mirko, Shanahan, Timothy M., Shao, Xuemei, Shi, Feng, Sigl, Michael, Smerdon, Jason E., Solomina, Olga N., Steig, Eric J., Stenni, Barbara, Thamban, Meloth, Trouet, Valerie, Turney, Chris S.M., Umer, Mohammed, van Ommen, Tas, Verschuren, Dirk, Viau, Andre E., Villalba, Ricardo, Vinther, Bo M., von Gunten, Lucien, Wagner, Sebastian, Wahl, Eugene R., Wanner, Heinz, Werner, Johannes P., White, James W.C., Yasue, Koh, and Zorita, Eduardo

Abstract

Past global climate changes had strong regional expression. To elucidate their spatio-temporal pattern, we reconstructed past temperatures for seven continental-scale regions during the past one to two millennia. The most coherent feature in nearly all of the regional temperature reconstructions is a long-term cooling trend, which ended late in the nineteenth century. At multi-decadal to centennial scales, temperature variability shows distinctly different regional patterns, with more similarity within each hemisphere than between them. There were no globally synchronous multi-decadal warm or cold intervals that define a worldwide Medieval Warm Period or Little Ice Age, but all reconstructions show generally cold conditions between ad 1580 and 1880, punctuated in some regions by warm decades during the eighteenth century. The transition to these colder conditions occurred earlier in the Arctic, Europe and Asia than in North America or the Southern Hemisphere regions. Recent warming reversed the long-term cooling; during the period ad 1971–2000, the area-weighted average reconstructed temperature was higher than any other time in nearly 1,400 years.

Published
2013

7. Continental-scale temperature variability during the past two millennia

Author

PAGES-2k-Network, Ahmed, Moinuddin, Anchukaitis, Kevin J., Asrat, Asfawossen, Borgaonkar, Hemant, Braida, Martina, Buckley, Brendan M., Büntgen, Ulf, Chase, Brian M., Christie, Duncan A., Cook, Edward R., Curran, Mark A. J., Diaz, Henry F., Esper, Jan, Fan, Ze-Xin, Gaire, Narayan P., Ge, Quansheng, Gergis, Joëlle, González-Rouco, J Fidel, Goosse, Hueghes, Grab, Stefan W., Graham, Nicholas, Graham, Rochelle, Grosjean, Martin, Hanhijärvi, Sami T., Kaufman, Darrell S., Kiefer, Thorsten, Kimura, Katsuhiko, Korhola, Atte A., Krusic, Paul J., Lara, Antonio, Lézine, Anne-Marie, Ljungqvist, Fredrik C., Lorrey, Andrew M., Luterbacher, Jürg, Masson-Delmotte, Valerie, McCarroll, Danny, McConnell, Joseph R., McKay, Nicholas P., Morales, Mariano S., Moy, Andrew D., Mulvaney, Robert, Mundo, Ignacio A., Nakatsuka, Takeshi, Nash, David J., Neukom, Raphael, Nicholson, Sharon E., Oerter, Hans, Palmer, Jonathan G., Phipps, Steven J., Prieto, Maria R., Rivera, Andres, Sano, Masaki, Severi, Mirko, Shanahan, Timothy M., Shao, Xuemei, Shi, Feng, Sigl, Michael, Smerdon, Jason E., Solomina, Olga N., Steig, Eric J., Stenni, Barbara, Thamban, Meloth, Trouet, Valerie, Turney, Chris S.M., Umer, Mohammed, Van Ommen, Tas, Verschuren, Dirk, Viau, Andre E., Villalba, Ricardo, Vinther, Bo M., von Gunten, Lucien, Wagner, Sebastian, Wahl, Eugene R., Wanner, Heinz, Werner, Johannes P., White, James W.C., Yasue, Koh, Zorita, Eduardo, PAGES-2k-Network, Ahmed, Moinuddin, Anchukaitis, Kevin J., Asrat, Asfawossen, Borgaonkar, Hemant, Braida, Martina, Buckley, Brendan M., Büntgen, Ulf, Chase, Brian M., Christie, Duncan A., Cook, Edward R., Curran, Mark A. J., Diaz, Henry F., Esper, Jan, Fan, Ze-Xin, Gaire, Narayan P., Ge, Quansheng, Gergis, Joëlle, González-Rouco, J Fidel, Goosse, Hueghes, Grab, Stefan W., Graham, Nicholas, Graham, Rochelle, Grosjean, Martin, Hanhijärvi, Sami T., Kaufman, Darrell S., Kiefer, Thorsten, Kimura, Katsuhiko, Korhola, Atte A., Krusic, Paul J., Lara, Antonio, Lézine, Anne-Marie, Ljungqvist, Fredrik C., Lorrey, Andrew M., Luterbacher, Jürg, Masson-Delmotte, Valerie, McCarroll, Danny, McConnell, Joseph R., McKay, Nicholas P., Morales, Mariano S., Moy, Andrew D., Mulvaney, Robert, Mundo, Ignacio A., Nakatsuka, Takeshi, Nash, David J., Neukom, Raphael, Nicholson, Sharon E., Oerter, Hans, Palmer, Jonathan G., Phipps, Steven J., Prieto, Maria R., Rivera, Andres, Sano, Masaki, Severi, Mirko, Shanahan, Timothy M., Shao, Xuemei, Shi, Feng, Sigl, Michael, Smerdon, Jason E., Solomina, Olga N., Steig, Eric J., Stenni, Barbara, Thamban, Meloth, Trouet, Valerie, Turney, Chris S.M., Umer, Mohammed, Van Ommen, Tas, Verschuren, Dirk, Viau, Andre E., Villalba, Ricardo, Vinther, Bo M., von Gunten, Lucien, Wagner, Sebastian, Wahl, Eugene R., Wanner, Heinz, Werner, Johannes P., White, James W.C., Yasue, Koh, and Zorita, Eduardo

Abstract

Past global climate changes had strong regional expression. To elucidate their spatio-temporal pattern, we reconstructed past temperatures for seven continental-scale regions during the past one to two millennia. The most coherent feature in nearly all of the regional temperature reconstructions is a long-term cooling trend, which ended late in the nineteenth century. At multi-decadal to centennial scales, temperature variability shows distinctly different regional patterns, with more similarity within each hemisphere than between them. There were no globally synchronous multi-decadal warm or cold intervals that define a worldwide Medieval Warm Period or Little Ice Age, but all reconstructions show generally cold conditions between ad 1580 and 1880, punctuated in some regions by warm decades during the eighteenth century. The transition to these colder conditions occurred earlier in the Arctic, Europe and Asia than in North America or the Southern Hemisphere regions. Recent warming reversed the long-term cooling; during the period ad 1971–2000, the area-weighted average reconstructed temperature was higher than any other time in nearly 1,400 years.

Published
2013

8. Continental-scale temperature variability during the past two millennia

Author

Ahmed, Moinuddin, Anchukaitis, Kevin J., Asrat, Asfawossen, Borgaonkar, Hemant P., Braida, Martina, Buckley, Brendan M., Büntgen, Ulf, Chase, Brian M., Christie, Duncan A., Cook, Edward R., Curran, Mark A.J., Diaz, Henry F., Esper, Jan, Fan, Ze-Xin, Gaire, Narayan P., Ge, Quansheng, Gergis, Joëlle, González-Rouco, J. Fidel, Goosse, Hugues, Grab, Stefan W., Graham, Nicholas, Graham, Rochelle, Grosjean, Martin, Hanhijärvi, Sami T., Kaufman, Darrell S., Kiefer, Thorsten, Kimura, Katsuhiko, Korhola, Atte A., Krusic, Paul J., Lara, Antonio, Lézine, Anne-Marie, Ljungqvist, Fredrik C., Lorrey, Andrew M., Luterbacher, Jürg, Masson-Delmotte, Valérie, McCarroll, Danny, McConnell, Joseph R., McKay, Nicholas P., Morales, Mariano S., Moy, Andrew D., Mulvaney, Robert, Mundo, Ignacio A., Nakatsuka, Takeshi, Nash, David J., Neukom, Raphael, Nicholson, Sharon E., Oerter, Hans, Palmer, Jonathan G., Phipps, Steven J., Prieto, Maria R., Rivera, Andres, Sano, Masaki, Severi, Mirko, Shanahan, Timothy M., Shao, Xuemei, Shi, Feng, Sigl, Michael, Smerdon, Jason E., Solomina, Olga N., Steig, Eric J., Stenni, Barbara, Thamban, Meloth, Trouet, Valerie, Turney, Chris S.M., Umer, Mohammed, van Ommen, Tas, Verschuren, Dirk, Viau, Andre E., Villalba, Ricardo, Vinther, Bo M., von Gunten, Lucien, Wagner, Sebastian, Wahl, Eugene R., Wanner, Heinz, Werner, Johannes P., White, James W.C., Yasue, Koh, Zorita, Eduardo, Ahmed, Moinuddin, Anchukaitis, Kevin J., Asrat, Asfawossen, Borgaonkar, Hemant P., Braida, Martina, Buckley, Brendan M., Büntgen, Ulf, Chase, Brian M., Christie, Duncan A., Cook, Edward R., Curran, Mark A.J., Diaz, Henry F., Esper, Jan, Fan, Ze-Xin, Gaire, Narayan P., Ge, Quansheng, Gergis, Joëlle, González-Rouco, J. Fidel, Goosse, Hugues, Grab, Stefan W., Graham, Nicholas, Graham, Rochelle, Grosjean, Martin, Hanhijärvi, Sami T., Kaufman, Darrell S., Kiefer, Thorsten, Kimura, Katsuhiko, Korhola, Atte A., Krusic, Paul J., Lara, Antonio, Lézine, Anne-Marie, Ljungqvist, Fredrik C., Lorrey, Andrew M., Luterbacher, Jürg, Masson-Delmotte, Valérie, McCarroll, Danny, McConnell, Joseph R., McKay, Nicholas P., Morales, Mariano S., Moy, Andrew D., Mulvaney, Robert, Mundo, Ignacio A., Nakatsuka, Takeshi, Nash, David J., Neukom, Raphael, Nicholson, Sharon E., Oerter, Hans, Palmer, Jonathan G., Phipps, Steven J., Prieto, Maria R., Rivera, Andres, Sano, Masaki, Severi, Mirko, Shanahan, Timothy M., Shao, Xuemei, Shi, Feng, Sigl, Michael, Smerdon, Jason E., Solomina, Olga N., Steig, Eric J., Stenni, Barbara, Thamban, Meloth, Trouet, Valerie, Turney, Chris S.M., Umer, Mohammed, van Ommen, Tas, Verschuren, Dirk, Viau, Andre E., Villalba, Ricardo, Vinther, Bo M., von Gunten, Lucien, Wagner, Sebastian, Wahl, Eugene R., Wanner, Heinz, Werner, Johannes P., White, James W.C., Yasue, Koh, and Zorita, Eduardo

Abstract

Past global climate changes had strong regional expression. To elucidate their spatio-temporal pattern, we reconstructed past temperatures for seven continental-scale regions during the past one to two millennia. The most coherent feature in nearly all of the regional temperature reconstructions is a long-term cooling trend, which ended late in the nineteenth century. At multi-decadal to centennial scales, temperature variability shows distinctly different regional patterns, with more similarity within each hemisphere than between them. There were no globally synchronous multi-decadal warm or cold intervals that define a worldwide Medieval Warm Period or Little Ice Age, but all reconstructions show generally cold conditions between ad 1580 and 1880, punctuated in some regions by warm decades during the eighteenth century. The transition to these colder conditions occurred earlier in the Arctic, Europe and Asia than in North America or the Southern Hemisphere regions. Recent warming reversed the long-term cooling; during the period ad 1971–2000, the area-weighted average reconstructed temperature was higher than any other time in nearly 1,400 years.

Published
2013

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