Articles | Volume 15, issue 5
https://doi.org/10.5194/tc-15-2383-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-15-2383-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
21 May 2021
Research article |
| 21 May 2021
| 21 May 2021
Record summer rains in 2019 led to massive loss of surface and cave ice in SE Europe
Emil Racoviţă Institute of Speleology, Romanian Academy, Cluj-Napoca, 400006, Romania
Stable Isotope Laboratory, Ştefan cel Mare University, Suceava, 720229, Romania
Romanian Institute of Science and Technology, Cluj-Napoca, 400022, Romania
Nenad Buzjak
Department of Geography, Faculty of Science, University of Zagreb, Zagreb, 10000, Croatia
Alexandru Onaca
Department of Geography, West University, Timişoara, 300223, Romania
Christos Pennos
Department of Earth Science, University of Bergen, Bergen, 5020, Norway
Yorgos Sotiriadis
Department of Geography, Aegean University, Mytilene, 81100, Greece
Monica Ionita
Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, Bremerhaven, 27515, Germany
Stavros Zachariadis
Department of History and Archeology, Aristotle University of Thessaloniki, Thessaloniki, 54636, Greece
Michael Styllas
École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland
Jure Kosutnik
University of Nova Gorica, Nova Gorica, 5000, Slovenia
Alexandru Hegyi
Department of Geography, West University, Timişoara, 300223, Romania
Department of History and Archaeology, University of Cyprus, Nicosia, 1678, Cyprus
Valerija Butorac
Department of Geography, Faculty of Science, University of Zagreb, Zagreb, 10000, Croatia
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Here we have assessed the variability and trends of hot and dry summers in Romania. The length, spatial extent, and frequency of heat waves in Romania have increased significantly over the last 70 years, while no significant changes have been observed in the drought conditions. The increased frequency of heat waves, especially after the 1990s, could be partially explained by an increase in the geopotential height over the eastern part of Europe.
Daniel Balting, Simon Michel, Viorica Nagavciuc, Gerhard Helle, Mandy Freund, Gerhard H. Schleser, David Steger, Gerrit Lohmann, and Monica Ionita
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2022-47, https://doi.org/10.5194/essd-2022-47, 2022
Preprint withdrawn
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Vapor pressure deficit is a key component of vegetation dynamics, soil science, meteorology, and soil science. In this study, we reconstruct the variability of the vapor pressure deficit in the past and examine the changes in future scenarios using climate models. In this way, past, present and future changes of the vapor pressure deficit can be detected locally, regionally, and continentally with higher statistical significance.
Petru Cosmin Vaideanu, Mihai Dima, Monica Ionita, and Mirela Voiculescu
Earth Syst. Dynam. Discuss., https://doi.org/10.5194/esd-2021-75, https://doi.org/10.5194/esd-2021-75, 2021
Revised manuscript not accepted
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Monica Ionita and Viorica Nagavciuc
Nat. Hazards Earth Syst. Sci., 21, 1685–1701, https://doi.org/10.5194/nhess-21-1685-2021, https://doi.org/10.5194/nhess-21-1685-2021, 2021
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Daniel F. Balting, Monica Ionita, Martin Wegmann, Gerhard Helle, Gerhard H. Schleser, Norel Rimbu, Mandy B. Freund, Ingo Heinrich, Diana Caldarescu, and Gerrit Lohmann
Clim. Past, 17, 1005–1023, https://doi.org/10.5194/cp-17-1005-2021, https://doi.org/10.5194/cp-17-1005-2021, 2021
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Carmen-Andreea Bădăluţă, Aurel Perșoiu, Monica Ionita, and Natalia Piotrowska
Clim. Past, 16, 2445–2458, https://doi.org/10.5194/cp-16-2445-2020, https://doi.org/10.5194/cp-16-2445-2020, 2020
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Sigrid J. Bakke, Monica Ionita, and Lena M. Tallaksen
Hydrol. Earth Syst. Sci., 24, 5621–5653, https://doi.org/10.5194/hess-24-5621-2020, https://doi.org/10.5194/hess-24-5621-2020, 2020
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Monica Ionita, Viorica Nagavciuc, and Bin Guan
Hydrol. Earth Syst. Sci., 24, 5125–5147, https://doi.org/10.5194/hess-24-5125-2020, https://doi.org/10.5194/hess-24-5125-2020, 2020
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Cited articles
Bădăluţă, C.-A., Perşoiu, A., Ionita, M., and Piotrowska, N.: Stable isotopes in cave ice suggest summer temperatures in east-central Europe are linked to Atlantic Multidecadal Oscillation variability, Clim. Past, 16, 2445–2458, https://doi.org/10.5194/cp-16-2445-2020, 2020.
Brad, T., Itcus, C., Pascu, M.-D., Perşoiu, A., Hillebrand-Voiculescu, A., Iancu, L., and Purcarea, C.: Fungi in perennial ice from Scărişoara Ice Cave (Romania), Sci. Rep., 8, 10096, https://doi.org/10.1038/s41598-018-28401-1, 2018.
Braithwaite, R. J. and Raper, S. C. B.: Glaciological conditions in seven contrasting regions estimated with the degree-day model, Ann. Glaciol., 46, 296–302, https://doi.org/10.3189/172756407782871206, 2007.
Brown, J., Harper, J., and Humphrey, N.: Cirque glacier sensitivity to 21st century warming: Sperry Glacier, Rocky Mountains, USA, Glob. Planet. Change 74, 91–98, https://doi.org/10.1016/j.gloplacha.2010.09.001, 2010.
Buzjak, N., Bočić, N., Paar, D., Bakšić, D., and Dubovečak, V.: Ice caves in Croatia, in: Ice caves, edited by: Perşoiu, A. and Lauritzen, S. E., Elsevier, Amsterdam, the Netherlands, 335–369, https://doi.org/10.1016/B978-0-12-811739-2.00016-4, 2018.
Cohen, J., Zhang, X., Francis, J., Jung, T., Kwok, R., Overland, J., Ballinger, T. J., Bhatt, U. S., Chen, H. W., Coumou, D., Feldstein, S., Gu, H., Handorf, D., Henderson, G., Ionita, M., Kretschmer, M., Laliberte, F., Lee, S., Linderholm, H. W., Maslowski, W., Peings, Y., Pfeiffer, K., Rigor, I., Semmler, T., Stroeve, S., Taylor, P. C., Vavrus, S., Vihma, T., Wang, S., Wendisch, M., Wu, Y., and Yoonet, J.: Divergent consensuses on Arctic amplification influence on midlatitude severe winter weather, Nat. Clim. Change, 10, 20–29, https://doi.org/10.1038/s41558-019-0662-y, 2020.
Colucci, R. R. and Guglielmin, M.: Precipitation-temperature changes and evolution of a small glacier in the southeastern European Alps during the last 90 years, Int. J. Climatol., 35, 2783–2797, https://doi.org/10.1002/joc.4172, 2015.
Colucci, R. R., Fontana, D., Forte, E., Potleca, M., and Guglielmin, M.: Response of ice caves to weather extremes in the southeastern Alps, Europe, Geomorphology, 261, 1–11, https://doi.org/10.1016/j.geomorph.2016.02.017, 2016.
Cornes, R., Van der Schrier, G., Van den Besselaar, E. J. M., and Jones, P. D.: An Ensemble Version of the E-OBS Temperature and Precipitation Datasets, J. Geophys. Res., 123, 9391–9409, https://doi.org/10.1029/2017JD028200, 2018.
Deutscher Wetterdienst: Maps of snow – WMO-region RA VI, available at: https://www.dwd.de, last access: 23 March 2021.
European State of the Climate: 2019 summary, Copernicus Climate Change Service, https://doi.org/10.24381/zw9t-hx58, 2019.
Feurdean, A., Perşoiu, A., Pazdur, A., and Onac, B. P.: Evaluating the palaeoecological potential of pollen recovered from ice in caves: a case study from Scarisoara Ice Cave, Romania, Rev. Palaeobot. Palyno., 165, 1–10, https://doi.org/10.1016/j.revpalbo.2011.01.007, 2011.
Francis, J. A. and Vavrus, S. J.: Evidence linking Arctic amplification to extreme weather in mid-latitudes, Geophys. Res. Lett., 39, L06801, https://doi.org/10.1029/2012GL051000, 2012.
Gachev, E., Stoyanov, K., and Gikov, A.: Small glaciers on the Balkan Peninsula: state and changes in the last several years, Quatern. Int., 415, 33–54, https://doi.org/10.1016/j.quaint.2015.10.042, 2016.
Giorgi, F., Im, E. S., Coppola, E., Diffenbaugh, N. S., Gao, X. J., Mariotti, L., and Shi, Y.: Higher Hydroclimatic Intensity with Global Warming, J. Climate, 24, 5309–5324, https://doi.org/10.1175/2011JCLI3979.1, 2011.
Giorgi, F., Torma, C., Coppola, E., Ban, N., Schär, C., and Somot, S.: Enhanced summer convective rainfall at Alpine high elevations in response to climate warming, Nat. Geosci., 9, 584–589, https://doi.org/10.1038/ngeo2761, 2016.
Grunewald, K. and Scheithauer, J.: Europe's southernmost glaciers: response and adaptation to climate change, J. Glaciol., 56, 129–142, https://doi.org/10.3189/002214310791190947, 2010.
Hall, D. K. and Riggs, G. A.: MODIS/Terra Snow Cover Monthly L3 Global 0.05Deg CMG; Version 6; NASA National Snow and Ice Data Center Distributed Active Archive Center: Boulder, CO, USA, 2006.
Hughes, P. D.: Response of a Montenegro glacier to extreme summer heatwaves in 2003 and 2007, Geogr. Ann., 90A, 259–267, https://doi.org/10.1111/j.1468-0459.2008.00344.x, 2008.
Hughes, P. D.: Little Ice Age glaciers in the Balkans: low altitude glaciation enabled by cooler temperatures and local topoclimatic controls, Earth Surf. Proc. Land., 35, 229–241, https://doi.org/10.1002/esp.1916, 2009.
Hughes, P. D.: Little Ice Age glaciers and climate in the Mediterranean mountains: a new analysis, Cuadern. Investig. Geográfica, 44, 15–45, https://doi.org/10.18172/cig.3362, 2018.
HBSD: Crna ledenica – HR00366, Ministry of Environmental Protection and Energy: Information System for Nature Conservation – Cadastre of Speleological Objects of the Republic of Croatia, http://natura2000.dzzp.hr/speleo/, last access: 22 May 2020.
IPCC: Summary for Policymakers, in: IPCC special report on the ocean and cryosphere in a changing climate, edited by: Pörtner, H.-O., Roberts, D. C., Masson-Delmotte, V., Zhai, P., Tignor, M., Poloczanska, E., Mintenbeck, K., Nicolai, M., Okem, A., Petzold, J., Rama, B., and Weyer, N., 2019.
Itcus, C., Pascu, M. D., Lavin, P., Perşoiu, A., Iancu, L., and Purcarea, C.: Bacterial and archaeal community structures in perennial cave ice, Sci. Rep., 8, 15671, https://doi.org/10.1038/s41598-018-34106-2, 2018.
Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., Iredell, M., Saha, S., White, G.,Woollen, J., Zhu, Y., Leetmaa, A., Reynolds, R., Chelliah, M., Ebisuzaki,W., Higgins, W., Janowiak, J., Mo, K. C., Ropelewski, C.,Wang, J., Jenne, R., and Joseph, D.: The NCEP/NCAR 40 year reanalysis project, B. Am. Meteorol. Soc., 77, 437–470, https://doi.org/10.1175/1520-0477(1996)077<0437:TNYRP>2.0.CO;2, 1996.
Kern, Z. and Perşoiu, A.: Cave ice - the imminent loss of untapped mid-latitude cryospheric palaeoenvironmental archives, Quaternary Sci. Rev., 67, 1–7, https://doi.org/10.1016/j.quascirev.2013.01.008, 2013.
Kern, Z. and Thomas, S.: Ice level changes from seasonal to decadal time-scales observed in lava tubes, Lava Beds National Monument, NE California, USA, Geogr. Fis. Din. Quat., 37, 151–162, 2014.
Kern, Z., Molnár. M., Svingor, É., Perşoiu, A., and Nagy, B.: High-resolution, well-preserved tritium record in the ice of Borţig Ice Cave (Bihor Mts., Romania), Holocene, 19, 729–736, https://doi.org/10.1177/0959683609105296, 2009.
Kern, Z., Széles, E., Horvatinčić, N., Fórizs, I., Bočić, N., and Nagy, B.: Glaciochemical investigations of the ice deposit of Vukušić Ice Cave, Velebit Mountain, Croatia, The Cryosphere, 5, 485–494, https://doi.org/10.5194/tc-5-485-2011, 2011.
Kern, Z., Palcsu, L., Pavuza, R., and Molnár, M.: Age estimates on the deposition of the Cave ice block in the Saarhalle Dachstein-Mammoth Cave (Mammuthöhle, Austria) based on 3H and 14C, Radiocarbon, 60, 1379–1389, https://doi.org/10.1017/RDC.2018.96, 2018a.
Kern, Z., Bočić, N., and Sipos, G.: Radiocarbon-Dated vegetal remains from the cave ice deposits of Velebit Mountain, Croatia, Radiocarbon, 60, 1391–1402, https://doi.org/10.1017/RDC.2018.108, 2018b.
Kumar, R.: Glacieret, in: Encyclopedia of Snow, Ice and Glaciers, edited by: Singh, V. P., Singh, P., and Haritashya, U. K., Springer, the Netherlands, Dordrecht, 436–436, https://doi.org/10.1007/978-90-481-2642-2_203, 2011.
Lauritzen, S.-E., Baastad, L., and Engelien, J.: Ice Caves in Norway, Fennoscandia and the Arctic, in: Ice caves, edited by: Perşoiu, A. and Lauritzen, S. E., Elsevier, Amsterdam, the Netherlands, 479–492, https://doi.org/10.1016/B978-0-12-811739-2.00023-1, 2018.
Leunda, M., González-Sampériz, P., Gil-Romera, G., Bartolomé, M., Belmonte-Ribas, Á., Gómez-García, D., Kaltenrieder, P., Rubiales, J. M., Schwörer, C., Tinner, W., Morales-Molino, C., and Sancho, C.: Ice cave reveals environmental forcing of long-term Pyrenean tree line dynamics, J. Ecol., 107, 814–828, https://doi.org/10.1111/1365-2745.13077, 2019.
Liu, J., Curry, J., and Wang, H.: Impact of declining Arctic sea ice on winter snowfall, P. Natl. Acad. Sci. USA, 109, 4074–4079, https://doi.org/10.1073/pnas.1114910109, 2012.
Luetscher, M., Jeannin, P.-Y., and Haeberli, W.: Ice caves as an indicator of winter climate evolution: a case study from the Jura Mountains, Holocene, 15, 982–993, https://doi.org/10.1191/0959683605hl872ra, 2005.
Marks, D., Kimball, J., Tingey, D., and Link, T.: The sensitivity of snowmelt processes to climate conditions and forest cover during rain-on-snow: a case study of the 1996 Pacific Northwest flood, Hydrol. Proc., 12, 1569–1587, https://doi.org/10.1002/(SICI)1099-1085(199808/09)12:10/11<1569::AID-HYP682>3.0.CO;2-L, 1998.
Marzeion, B., Jarosch, A. H., and Gregory, J. M.: Feedbacks and mechanisms affecting the global sensitivity of glaciers to climate change, The Cryosphere, 8, 59–71, https://doi.org/10.5194/tc-8-59-2014, 2014.
Mihevc, A.: Ice caves in Slovenia, in: Ice caves, edited by: Perşoiu, A. and Lauritzen, S. E., Elsevier, Amsterdam, the Netherlands, 691–703, https://doi.org/10.1016/B978-0-12-811739-2.00030-9, 2018.
Mondini, A., Donhauser, J., Itcus, C., Marin, C., Perşoiu, A., Lavin, P., Frey, B., and Purcarea, C.: High-throughput sequencing of fungal communities across the perennial ice block of Scărişoara Ice Cave, Ann. Glaciol., 59, 134–146, https://doi.org/10.1017/aog.2019.6, 2019.
Moreno, A., Bartolomé, M., López-Moreno, J. I., Pey, J., Corella, J. P., García-Orellana, J., Sancho, C., Leunda, M., Gil-Romera, G., González-Sampériz, P., Pérez-Mejías, C., Navarro, F., Otero-García, J., Lapazaran, J., Alonso-González, E., Cid, C., López-Martínez, J., Oliva-Urcia, B., Faria, S. H., Sierra, M. J., Millán, R., Querol, X., Alastuey, A., and García-Ruíz, J. M.: The case of a southern European glacier which survived Roman and medieval warm periods but is disappearing under recent warming, The Cryosphere, 15, 1157–1172, https://doi.org/10.5194/tc-15-1157-2021, 2021.
Munroe, J. S.: First investigation of perennial ice in Winter Wonderland Cave, Uinta Mountains, Utah, USA, The Cryosphere, 15, 863–881, https://doi.org/10.5194/tc-15-863-2021, 2021.
Myhre, G., Alterskjær, K., Stjern, C. W., Hodnebrog, Ø., Marelle, L., Samset, B. H., Sillmann, J., Schaller, N., Fischer, E., Schulz, M., and Stohl, A.: Frequency of extreme precipitation increases extensively with event rareness under global warming, Sci. Rep., 9, 16063, https://doi.org/10.1038/s41598-019-52277-4, 2019.
Oerlemans, J.: Extracting a climate signal from 169 glacier records, Science, 308, 675–677, https://doi.org/10.1126/science.1107046, 2005.
Onaca, A., Ardelean, A., Ardelean, F., Gachev, E., Magori, B., and Sîrbu, F.: Ice thickness and internal structure of two small glaciers in the Pirin Mountains (Bulgaria) assessed by geophysical investigations, in: Proceedings of the 20th Congress of the International Union for Quaternary Research (INQUA), Dublin, 25–31 July, P-2845, 2019.
Ødegård, R. S., Nesje, A., Isaksen, K., Andreassen, L. M., Eiken, T., Schwikowski, M., and Uglietti, C.: Climate change threatens archaeologically significant ice patches: insights into their age, internal structure, mass balance and climate sensitivity, The Cryosphere, 11, 17–32, https://doi.org/10.5194/tc-11-17-2017, 2017.
Paul, F., Kääb, A., Maisch, M., Kellenberger, T., and Haeberli, W.: Rapid disintegration of Alpine glaciers observed with satellite data, Geophys. Res. Lett., 31, L21401, https://doi.org/10.1029/2004GL020816, 2004.
Paul, F., Rastner, P., Azzoni, R. S., Diolaiuti, G., Fugazza, D., Le Bris, R., Nemec, J., Rabatel, A., Ramusovic, M., Schwaizer, G., and Smiraglia, C.: Glacier shrinkage in the Alps continues unabated as revealed by a new glacier inventory from Sentinel-2, Earth Syst. Sci. Data, 12, 1805–1821, https://doi.org/10.5194/essd-12-1805-2020, 2020.
Paun, V. I., Icaza, G., Lavin, P., Marin, C., Tudorache, A., Perşoiu, A., Dorador, C., and Purcarea, C.: Total and Potentially Active Bacterial Communities Entrapped in a Late Glacial Through Holocene Ice Core From Scarisoara Ice Cave, Romania, Front. Microbiol., 10, 1193, https://doi.org/10.3389/fmicb.2019.01193, 2019.
Pennos, C., Styllas, M., Sotiriadis, Y., and Vaxevanopoulos, M.: Ice caves in Greece, in: Ice caves, edited by: Perşoiu, A. and Lauritzen, S. E., Elsevier, Amsterdam, the Netherlands, 385–397, https://doi.org/10.1016/B978-0-12-811739-2.00018-8, 2018.
Perşoiu, A.: Evidence of basal melting of the ice block from Scărişoara Ice Cave, in: Glacier Caves and Glacial Karst in High Mountains and Polar Regions, edited by: Mavlyudov, B. R., Institute of Geography of the Russian Academy of Sciences, Moscow, 109–112, 2005.
Perşoiu, A.: Ice dynamics in caves, in Ice caves, edited by: Perşoiu, A. and Lauritzen, S. E., Elsevier, Amsterdam, the Netherlands, 97–108, https://doi.org/10.1016/B978-0-12-811739-2.00034-6, 2018.
Perşoiu, A. and Lauritzen, S. E. (Eds.): Ice caves, Elsevier, Amsterdam, the Netherlands, 2018.
Perşoiu, A. and Onac, B. P.: Ice caves in Romania, in: Cave and Karst Systems of Romania, edited by: Ponta, G. M. L. and Onac, B. P., 455–465, https://doi.org/10.1007/978-3-319-90747-5_52, 2019.
Perşoiu, A. and Pazdur, A.: Ice genesis and its long-term mass balance and dynamics in Scărişoara Ice Cave, Romania, The Cryosphere, 5, 45–53, https://doi.org/10.5194/tc-5-45-2011, 2011.
Perşoiu, A., Onac, B. P., and Perşoiu, I.: The interplay between air temperature and ice dynamics in Scărişoara Ice Cave, Romania, Acta Carsologica, 40, 445–456, https://doi.org/10.3986/ac.v40i3.4, 2011a.
Perşoiu, A., Onac, B. P., Wynn, J., Bojar, A.-V., and Holmgren K: Stable isotopes behavior during cave ice formation by water freezing in Scărişoara Ice Cave, J. Geophys. Res.-Atmos., 116, D02111, https://doi.org/10.1029/2010JD014477, 2011b.
Perşoiu, A., Onac, B. P., Wynn, J. G., Blaauw, M., Ionita, M., and Hansson, M.: Holocene winter climate variability in Central and Eastern Europe, Sci. Rep., 7, 1196, https://doi.org/10.1038/s41598-017-01397-w, 2017.
Planton, S., Lionello, P., Artale, V., Aznar, R., Carrillo, A., Colin, J., Congedi, L., Dubois, C., Elizalde, A., Gualdi, S., Hertig, E., Jacobeit, J., Jordà, G., Li, L., Mariotti, A., Piani, C., Ruti, P., Sanchez-Gomez, E., Sannino, G., Sevault, F., Somot, S., and Tsimplis, M.: 8 - The Climate of the Mediterranean Region in Future Climate Projections, in: The Climate of the Mediterranean Region, Elsevier, Oxford, 449–502, 2012.
Pomeroy, J. W., Fang, X., and Marks, D. G.: The cold rain-on-snow event of June 2013 in the Canadian Rockies – characteristics and diagnosis, Hydrol. Proc., 30, 2899–2914, https://doi.org/10.1002/hyp.10905, 2016.
Púčik, T., Groenemeijer, P., Rädler, A. T., Tijssen, L., Nikulin, G., Prein, A. F., van Meijgaard, E., Fealy, R., Jacob, D., and Teichmann, C.: Future changes in European severe convection environments in a regional climate model ensemble, J. Climate, 30, 6771–6794, https://doi.org/10.1175/JCLI-D-16-0777.1, 2017.
Racoviţǎ, G.: Bilan climatique de la grotte glacière de Scǎrişoara, dresse sur dix années d'observations, Trav. Inst. Spéol. “E. Racovitza”, XXXIII, 107–158, 1994.
Rädler, A. T., Groenemeijer, P. H., Faust, E., Sausen, R., and Púčik, T.: Frequency of severe thunderstorms across Europe expected to increase in the 21st century due to rising instability, npj Climate and Atmospheric Science, 2, 30, https://doi.org/10.1038/s41612-019-0083-7, 2019.
Rottler, E., Kormann, C., Francke, T., and Bronstert, A.: Elevation-dependent warming in the Swiss Alps 1981–2017: Features, forcings and feedbacks, Int. J. Climatol., 39, 2556–2568, https://doi.org/10.1002/joc.5970, 2019.
Rubel, F., Brugger, K., Haslinger, K., and Auer, I.: The climate of the European Alps: Shift of very high resolution Koppen-Geiger climate zones 1800–2100, Meteorol. Z., 26, 115–125, https://doi.org/10.1127/metz/2016/0816, 2017.
Rusu, T., Racoviţǎ, G., and Coman, D.: Contribution à l'étude du complexe karstique de Scǎrişoara, Ann. Spéléol., 25, 383–408, 1970.
Sancho, C., Belmonte, Á., Bartolomé, M., Moreno, A., Leunda, M., and López-Martínez, J.: Middle-to-late Holocene palaeoenvironmental reconstruction from the A294 ice-cave record (Central Pyrenees, northern Spain), Earth Planet. Sc. Lett., 484, 135–144, https://doi.org/10.1016/j.epsl.2017.12.027, 2018.
Screen, J. A. and Simmonds, I.: Amplified mid-latitude planetary waves favour particular regional weather extremes, Nat. Clim. Change, 4, 704–709, https://doi.org/10.1038/nclimate2271, 2014.
Sommer, C., Malz, P., Seehaus, T. C., Lippl, S., Zemp, M., and Braun, M. H.: Rapid glacier retreat and downwasting throughout the European Alps in the early 21st century, Nat. Commun., 11, 3209, https://doi.org/10.1038/s41467-020-16818-0, 2020.
Spinoni, J., Lakatos, M., Szentimrey, T., Bihari, Z., Szalai, S., Vogt, J., and Antofie, T.: Heat and cold waves trends in the Carpathian Region from 1961 to 2010, Int. J. Climatol., 35, 4197–4209, https://doi.org/10.1002/joc.4279, 2015.
Spoötl, C., Reimer, P. J., and Luetscher, M.: Long-term mass balance of perennial firn and ice in an Alpine cave (Austria): constraints from radiocarbon-dated wood fragments, Holocene 24, 165–175, https://doi.org/10.1177/0959683613515729, 2014.
Stoffel, M., Luetscher, M., Bollschweiler, M., and Schlatter, F.: Evidence of NAO control on subsurface ice accumulation in a 1200 yr old cave-ice sequence, St. Livres ice cave, Switzerland, Quaternary Res., 72, 16–26, https://doi.org/10.1016/j.yqres.2009.03.002, 2009.
Styllas, M. N., Schimmelpfennig, I., Benedetti, L., Ghilardi, M., Aumaître, G., Bourlès, D., and Keddadouche, K.: Late-glacial and Holocene history of the northeast Mediterranean mountain glaciers – New insights from in situ-produced 36Cl-based cosmic ray exposure dating of paleo-glacier deposits on Mount Olympus, Greece, Quaternary Sci. Rev., 193, 244–265, https://doi.org/10.1016/j.quascirev.2018.06.020, 2018.
Topál, D., Hatvani, I. G., and Kern, Z.: Refining projected multidecadal hydroclimate uncertainty in East-Central Europe using CMIP5 and single-model large ensemble simulations, Theor. Appl. Climatol., 142, 1147–1167, https://doi.org/10.1007/s00704-020-03361-7, 2020.
Vaughan, D. G., Comiso, J. C., Allison, I., Carrasco, J., Kaser, G., Kwok, R., Mote, P., Murray, T., Paul, F., Ren, J., Rig- not, E., Solomina, O., Steffen, K., and Zhang, T.: Observations: Cryosphere, in: Climate Change 2013: Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Re- port of the Intergovernmental Panel on Climate Change, edited by: Stocker, T. F., Qin, D., Plattner, G.-K., Tignor, M., Allen, S. K., Boschung, J., Nauels, A., Xia, Y., Bex, V., and Midgley, P. M., Cambridge University Press, Cambridge, UK, and New York, NY, USA, 317–382, 2013.
Zekollari, H., Huss, M., and Farinotti, D.: On the Imbalance and Response Time of Glaciers in the European Alps, Geophys. Res. Lett., 47, e2019GL085578, https://doi.org/10.1029/2019GL085578, 2020.
Zemp, M., Huss, M., Thibert, E., Eckert, N., McNabb, R., Huber, J., Barandun, M., Machguth, H., Nussbaumer, S. U., Gärtner-Roer, I., Thomson, L., Paul, F., Maussion, F., Kutuzov, S., and Cogley, J. G.: Global glacier mass changes and their contributions to sea-level rise from 1961 to 2016, Nature, 568, 382–386, https://doi.org/10.1038/s41586-019-1071-0, 2019.
Short summary
Extreme precipitation events in summer 2019 led to catastrophic loss of cave and surface ice in SE Europe at levels unprecedented during the last century. The projected continuous warming and increase in precipitation extremes could pose an additional threat to glaciers in southern Europe, resulting in a potentially ice-free SE Europe by the middle of the next decade (2035 CE).
Extreme precipitation events in summer 2019 led to catastrophic loss of cave and surface ice in...
