Blar i HVL Open på forfatter "Mernild, Jacob Sebastian Haugaard"
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Annual River Runoff Variations and Trends for the Andes Cordillera
Mernild, Jacob Sebastian Haugaard; Liston, Glen E.; Hiemstra, Christopher A.; Yde, Jacob Clement; Casassa, Gino (Journal article; Peer reviewed, 2018)We analyzed modeled river runoff variations west of the Andes Cordillera’s continental divide for 1979/80–2013/14 (35 years). Our foci were annual runoff conditions, runoff origins (rain, snowmelt, and glacier ice), and ... -
Arctic climate shifts drive rapid ecosystem responses across the West Greenland landscape
Saros, Jasmine E.; Anderson, Nicholas John; Juggins, Stephen; McGowan, Suzanne; Yde, Jacob C.; Bullard, Joanna E.; Yallop, Marian L.; Heathcote, Adam J.; Burpee, Benjamin T.; Fowler, Rachel A.; Barry, Christopher D.; Northington, Robert M.; Osburn, Christopher L.; Pla-Rabes, Sergi; Mernild, Jacob Sebastian Haugaard; Whiteford, Erika J.; Andrews, Grace; Kerby, Jeffrey T.; Post, Eric (Journal article; Peer reviewed, 2019)Prediction of high latitude response to climate change is hampered by poor understanding of the role of nonlinear changes in ecosystem forcing and response. While the effects of nonlinear climate change are often delayed ... -
Arctic terrestrial hydrology: A synthesis of processes, regional effects, and research challenges
Bring, Arvid; Fedorova, Irina V.; Dibike, Yonas B.; Hinzman, Larry; Mård, Johanna; Mernild, Jacob Sebastian Haugaard; Prowse, Terry D.; Semenova, Olga M.; Stuefer, Svetlana L.; Woo, Ming-ko (Journal article; Peer reviewed, 2016)Terrestrial hydrology is central to the Arctic system and its freshwater circulation. Water transport and water constituents vary, however, across a very diverse geography. In this paper, which is a component of the Arctic ... -
Glacier area changes in the central Chilean and Argentinean Andes 1955 – 2013/2014
Malmros, Jeppe K.; Mernild, Jacob Sebastian Haugaard; Wilson, Ryan; Yde, Jacob Clement; Fensholt, Rasmus (Journal article; Peer reviewed, 2016)To improve our knowledge of glacier area changes in the central Chilean and Argentinean Andes (32°9′S–33°4′S), two new glacier inventories from 1989 to 2013/14 are compared with a reinterpreted inventory from 1955. Comparisons ... -
Global sea-level contribution from Arctic land ice: 1971 to 2017.
Box, Jason E.; Colgan, William T.; Wouters, Bert; Burgess, David O.; O'Neel, Shad; Thomson, Laura I; Mernild, Jacob Sebastian Haugaard (Journal article; Peer reviewed, 2018)The Arctic Monitoring and Assessment Program (AMAP 2017) report identifies the Arctic as the largest regional source of land ice to global sea-level rise in the 2003–2014 period. Yet, this contextualization ignores the ... -
Greenland surface air temperature changes from 1981 to 2019 and implications for ice-sheet melt and mass-balance change
Hanna, Edward; Cappelen, John; Fettweis, Xavier; Mernild, Jacob Sebastian Haugaard; Mote, Thomas L.; Mottram, Ruth; Steffen, Konrad; Ballinger, Thomas J.; Hall, Richard J. (Peer reviewed; Journal article, 2020)We provide an updated analysis of instrumental Greenland monthly temperature data to 2019, focusing mainly on coastal stations but also analysing ice‐sheet records from Swiss Camp and Summit. Significant summer (winter) ... -
Greenland surface mass-balancee observations from the ice- sheet ablation area and local glaciers
Machguth, H.; Thomsen, H.H.; Weidick, A.; Ahlstrøm, A.P.; Abermann, J.; Andersen, M.L.; Andersen, Signe B.; Bjørk, A.A.; Box, J.E.; Braithwaite, R.J.; Bøggild, C.E.; Citterio, M.; Clement, P.; Colgan, W.; Fausto, R.S.; Gleie, K.; Gubler, Stefanie; Hasholt, B.; Hynek, B.; Knudsen, N.T.; Larsen, S.H.; Mernild, Jacob Sebastian Haugaard; Oerlemans, J.; Oerter, H.; Olesen, O.B.; Smeets, C.J.P.P.; Steffen, K.; Stober, M.; Sugiyama, S.; Van As, D.; van den Broeke, M.R.; Van de Wal, R.S. (Journal article; Peer reviewed, 2016) -
GrSMBMIP: intercomparison of the modelled 1980-2012 surface mass balance over the Greenland Ice Sheet
Fettweis, Xavier; Hofer, Stefan; Krebs-Kanzow, Uta; Amory, Charles; Aoki, Teruo; Berends, Constantijn J.; Born, Andreas; Box, Jason E.; Delhasse, Alison; Fujita, Koji; Gierz, Paul; Goelzer, Heiko; Hanna, Edward; Hashimoto, Akihiro; Huybrechts, Philippe; Kapsch, Marie-Luise; King, Michaela D.; Kittel, Christoph; Lang, Charlotte; Langen, Peter L.; Lenaerts, Jan T.M.; Liston, Glen E.; Lohmann, Gerrit; Mernild, Jacob Sebastian Haugaard; Mikolajewicz, Uwe; Modali, Kameswarrao; Mottram, Ruth H.; Niwano, Masashi; Noël, Brice; Ryan, Jonathan C.; Smith, Amy; Streffing, Jan; Tedesco, Marco; Van de Berg, Willem Jan; Van den Broeke, Michiel; Van de Wal, Rodecrick S.; Von Kampenhout, Leo; Wilton, David; Wouters, Bert; Ziemen, Florian; Zolles, Tobias (Peer reviewed; Journal article, 2020)Observations and models agree that the Greenland Ice Sheet (GrIS) surface mass balance (SMB) has decreased since the end of the 1990s due to an increase in meltwater runoff and that this trend will accelerate in the future. ... -
High-resolution ice sheet surface mass-balance and spatiotemporal runoff simulations: Kangerlussaq, West Greenland
Mernild, Jacob Sebastian Haugaard; Liston, Glen E.; van As, Dirk; Hasholt, Bent; Yde, Jacob C. (Journal article; Peer reviewed, 2018)The spatiotemporal distribution of freshwater runoff from the Greenland Ice Sheet (GrIS) determines the hydrographic and circulation conditions in Greenlandic fjords. The distribution of GrIS first-order atmospheric forcings, ... -
Key indicators of Arctic climate change: 1971–2017
Box, Jason E.; Colgan, William T.; Christensen, Torben Røjle; Schmidt, Niels Martin; Lund, Magnus; Parmentier, Frans-Jan W.; Brown, Ross; Bhatt, Uma S.; Euskirchen, Eugénie S.; Romanovsky, Vladimir E.; Walsh, John E.; Overland, James E.; Wang, Muyin; Corell, Robert; Meier, Walter N.; Wouters, Bert; Mernild, Jacob Sebastian Haugaard; Mård, Johanna; Pawlak, Janet; Olsen, Morten Skovgård (Journal article; Peer reviewed, 2019)Key observational indicators of climate change in the Arctic, most spanning a 47 year period (1971–2017) demonstrate fundamental changes among nine key elements of the Arctic system. We find that, coherent with increasing ... -
Observed sediment and solute transport from the Kangerlussuaq sector of the Greenland Ice Sheet (2006–2016)
Hasholt, B.; van As, Dirk; Mikkelsen, Andreas B.; Mernild, Jacob Sebastian Haugaard; Yde, Jacob C. (Journal article; Peer reviewed, 2018)New measurements of Watson River sediment and solute concentrations and an extended river discharge record improved by acoustic Doppler current profiler (ADCP) measurements are used to calculate the total sediment and ... -
Reconstructing Greenland Ice Sheet meltwater discharge through the Watson River (1949–2017)
van As, Dirk; Hasholt, Bent; Ahlstrøm, Andreas P.; Box, Jason E.; Cappelen, John; Colgan, William; Fausto, Robert S.; Mernild, Jacob Sebastian Haugaard; Mikkelsen, Andreas Bech; Noël, Brice P.Y.; Petersen, Dorthe; Van Den Broeke, Michiel (Journal article; Peer reviewed, 2018) -
Stable oxygen isotope variability in two contrasting glacier river catchments in Greenland
Yde, Jacob Clement; Knudsen, Niels Tvis; Steffensen, Jørgen Peder; Carrivick, Jonathan L.; Hasholt, Bent; Ingeman-Nielsen, Thomas; Kronborg, Christian; Larsen, Nicolaj Krog; Mernild, Jacob Sebastian Haugaard; Oerter, Hans; Roberts, David H.; Russell, Andy (Journal article; Peer reviewed, 2016)Analysis of stable oxygen isotope (δ 18O) characteristics is a useful tool to investigate water provenance in glacier river systems. In order to attain knowledge on the diversity of δ 18O variations in Greenlandic rivers, ... -
Surface Air Temperature Fluctuations and Lapse Rates on Olivares Gamma Glacier, Rio Olivares Basin, Central Chile, from a Novel Meteorological Sensor Network
Edward, Hanna; Mernild, Jacob Sebastian Haugaard; Yde, Jacob Clement; De Villiers, Simon Daniel (Journal article; Peer reviewed, 2017)Empirically based studies of glacier meteorology, especially for the Southern Hemisphere, are relatively sparse in the literature. Here, we use an innovative network of highly portable, low-cost thermometers to report on ... -
Surface air temperature fluctuations and lapse rates on Olivares Gamma Glacier, Rio Olivares basin, central Chile, from a novel meteorological sensor network
Hanna, Edward; Mernild, Jacob Sebastian Haugaard; Yde, Jacob Clement; De Villiers, Simon Daniel (Journal article; Peer reviewed, 2017)Empirically based studies of glacier meteorology, especially for the Southern Hemisphere, are relatively sparse in the literature. Here, we use an innovative network of highly portable, low-cost thermometers to report on ... -
Surface velocity fluctuations for Glaciar Universidad, Central Chile, between 1967 and 2015
Wilson, R.; Mernild, Jacob Sebastian Haugaard; Malmros, J.K.; Bravo, C.; Carrion, D. (Journal article; Peer reviewed, 2016)For the Andes Cordillera, where observed mass-balance records are sparse, long-term glacier velocity measurements potentially represent a useful tool for assessing glacier health. Utilising manual and automatic feature-tracking ... -
Twenty-three unsolved problems in hydrology (UPH) – a community perspective
Blöschl, Günter; Bierkens, Marc F.P.; Chambel, Antonio; Cudennec, Christophe; Destouni, Georgia; Fiori, Aldo; Kirchner, James W.; McDonnell, Jeff J.; Savenije, Hubert H.G.; Sivapalan, Murugesu; Stumpp, Christine; Toth, Elena; Volpi, Elena; Carr, Gemma; Lupton, Claire; Salinas, Josè; Széles, Borbála; Viglione, Alberto; Aksoy, Hafzullah; Allen, Scott T.; Amin, Anam; Andréassian, Vazken; Arheimer, Berit; Aryal, Santosh; Baker, Victor; Bardsley, Earl; Barendrecht, Marlies H.; Bartosova, Alena; Batelaan, Okke; Berghuijs, Wouter R.; Beven, Keith; Blume, Theresa; Bogaard, Thom; Borges, Pablo de Amorim; Böttcher, Michael E.; Boulet, Gilles; Breinl, Korbinian; Brilly, Mitja; Brocca, Luca; Buytaert, Wouter; Castellarin, Attilio; Castelletti, Andrea; Chen, Xiaohong; Chen, Yangbo; Chen, Yuanfang; Chifflard, Peter; Dathe, Annette; Lange, Holger; Mernild, Jacob Sebastian Haugaard; Steinsland, Ingelin (Journal article; Peer reviewed, 2019)This paper is the outcome of a community initiative to identify major unsolved scientific problems in hydrology motivated by a need for stronger harmonisation of research efforts. The procedure involved a public consultation ...