Browsing Geophysical Institute by Issue Date

Now showing items 61-80 of 1191

    • Enhancing Seasonal Forecast Skills by Optimally Weighting the Ensemble from Fresh Data 

      Brajard, Julien; Counillon, Francois Stephane; Wang, Yiguo; Kimmritz, Madlen (Journal article; Peer reviewed, 2023)
      Dynamical climate predictions are produced by assimilating observations and running ensemble simulations of Earth system models. This process is time consuming and by the time the forecast is delivered, new observations ...

    • Future Projections of EURO-CORDEX Raw and Bias-Corrected Daily Maximum Wind Speeds Over Scandinavia 

      Michel, Clio; Sorteberg, Asgeir (Journal article; Peer reviewed, 2023)
      Twenty historical and future Coordinated Regional Climate Downscaling Experiment ensemble for Europe simulations are bias corrected to investigate the future changes in the daily maximum wind speed over Scandinavia. We use ...

    • Role of Atmosphere-ocean-ice Interaction in the Linkage between December Bering Sea Ice and Subsequent February Surface Air Temperature Over North America 

      Zhao, Jiazhen; He, Shengping; Huijun, Wang (Journal article; Peer reviewed, 2023)
      This study revealed that the interannual variations of December Bering Sea ice and subsequent February surface air temperature (SAT) over North America are significantly correlated during 2000/01-2020/21, which is not the ...

    • Norwegian offshore wind power—Spatial planning using multi-criteria decision analysis 

      Solbrekke, Ida Marie; Sorteberg, Asgeir (Journal article; Peer reviewed, 2023)
      The Norwegian government recently agreed on the goal 30by40, which involves opening Norwegian offshore areas to host 30 GW of installed wind power by 2040. We address this goal by presenting a first mapping of wind power ...

    • A Regime View of ENSO Flavors Through Clustering in CMIP6 Models 

      Ayar, Pradeebane Vaittinada; Battisti, David Stephen; Li, Camille; King, Martin; Vrac, Mathieu; Tjiputra, Jerry (Journal article; Peer reviewed, 2023)
      El Niño-Southern Oscillation (ENSO) flavors in the tropical Pacific are studied from a regime perspective. Five recurring spatial patterns or regimes characterizing the diversity of ENSO are established using a clustering ...

    • Forced and internal components of observed Arctic sea-ice changes 

      Dörr, Jakob Simon; Bonan, David; Årthun, Marius; Svendsen, Lea; Wills, Robert C.J. (Journal article; Peer reviewed, 2023)
      The Arctic sea-ice cover is strongly influenced by internal variability on decadal timescales, affecting both short-term trends and the timing of the first ice-free summer. Several mechanisms of variability have been ...

    • Impacts of the extratropical North Pacific on boreal summer Arctic circulation 

      He, Shengping; Furevik, Tore; Wang, Huijun; Li, Fei; Duan, Mingkeng (Journal article; Peer reviewed, 2023)
      A distinct characteristic of the Arctic summer atmospheric circulation is the anomalous anticyclonic circulation centered over the Arctic Ocean associated with significant Arctic warming. Previous studies have related the ...

    • Thin and transient meltwater layers and false bottoms in the Arctic sea ice pack-Recent insights on these historically overlooked features 

      Smith, Madison M.; Muilwijk, Morven; Chierici, Melissa; Fer, Ilker; Fransson, Agneta; Gardner, Jessie; Granskog, Mats; Müller, Oliver; Salganik, Evgenii (Journal article; Peer reviewed, 2023)
      The rapid melt of snow and sea ice during the Arctic summer provides a significant source of low-salinity meltwater to the surface ocean on the local scale. The accumulation of this meltwater on, under, and around sea ice ...

    • Supermodeling Improving Predictions with an Ensemble of Interacting Models 

      Schevenhoven, Francine Janneke; Keenlyside, Noel Sebastian; Counillon, Francois Stephane; Gupta, Alok Kumar; Koseki, Shunya; Shen, Mao-Lin (Journal article; Peer reviewed, 2023)
      The modeling of weather and climate has been a success story. The skill of forecasts continues to improve and model biases continue to decrease. Combining the output of multiple models has further improved forecast skill ...

    • Snow-Atmosphere Humidity Exchange at the Ice Sheet Surface Alters Annual Mean Climate Signals in Ice Core Records 

      Dietrich, Laura Jasmin; Steen-Larsen, Hans Christian; Wahl, Sonja; Jones, Tyler R.; Town, Michel Stephen; Werner, Martin (Journal article; Peer reviewed, 2023)
      Surface processes alter the water stable isotope signal of the surface snow after deposition. However, it remains an open question to which extent surface post-depositional processes should be considered when inferring ...

    • Identifying quasi-periodic variability using multivariate empirical mode decomposition: a case of the tropical Pacific 

      Boljka, Lina; Omrani, Nour-Eddine; Keenlyside, Noel Sebastian (Journal article; Peer reviewed, 2023)
      A variety of statistical tools have been used in climate science to gain a better understanding of the climate system's variability on various temporal and spatial scales. However, these tools are mostly linear, stationary, ...

    • Effects of negative shear on loads for a 15 MW offshore wind turbine during low-level jet events 

      Ahmed, Fahim Masud; Bakhoday Paskyabi, Mostafa (Journal article; Peer reviewed, 2023)
      Wind turbines are more often interacting with the negative shear region of a low-level jet due to increasing turbine sizes. However, the effects of negative shear on wind turbines are not sufficiently studied, particularly ...

    • Interdecadal Changes in the Linkage Between North Pacific Oscillation During May and Northeast China Precipitation During Mid-Summer: The Influence of North Atlantic Oscillation 

      Han, Tingting; He, Shengping; Zhou, Botao; Li, Shangfeng; Hao, Xin (Journal article; Peer reviewed, 2023)
      Many previous studies have documented the relationship between the North Pacific Oscillation (NPO) and the weather/climate of upstream and downstream regions. However, the stability of NPO precursor signals of East Asian ...

    • Initialization shock in the ocean circulation reduces skill in decadal predictions of the North Atlantic subpolar gyre 

      Polkova, Iuliia; Swingedouw, Didier; Hermanson, Leon; Köhl, Armin; Stammer, Detlef; Smith, Doug; Kröger, Jürgen; Bethke, Ingo; Yang, Xiaosong; Zhang, Liping; Nicolì, Dario; Athanasiadis, Panos J.; Karami, Mehdi Pasha; Pankatz, Klaus; Pohlmann, Holger; Wu, Bo; Bilbao, Roberto; Ortega, Pablo; Yang, Shuting; Sospedra-Alfonso, Reinel; Merryfield, William; Kataoka, Takahito; Tatebe, Hiroaki; Imada, Yukiko; Ishii, Masayoshi; Matear, Richard J. (Journal article; Peer reviewed, 2023)
      Due to large northward heat transport, the Atlantic meridional overturning circulation (AMOC) strongly affects the climate of various regions. Its internal variability has been shown to be predictable decades ahead within ...

    • Observing Antarctic Bottom Water in the Southern Ocean 

      Silvano, Alessandro; Purkey, Sarah; Gordon, Arnold L.; Castagno, Pasquale; Stewart, Andrew L.; Rintoul, Stephen R.; Foppert, Annie; Gunn, Kathryn L.; Herraiz-Borreguero, Laura; Aoki, Shigeru; Nakayama, Yoshihiro; Naveira Garabato, Alberto C.; Spingys, Carl; Akhoudas, Camille Hayatte; Sallée, Jean-Baptiste; de Lavergne, Casimir; Abrahamsen, E. Povl; Meijers, Andrew J. S.; Meredith, Michael P.; Zhou, Shenjie; Tamura, Takeshi; Yamazaki, Kaihe; Ohshima, Kay I.; Falco, Pierpaolo; Budillon, Giorgio; Hattermann, Tore; Janout, Markus A.; Llanillo, Pedro; Bowen, Melissa M.; Darelius, Elin Maria K.; Østerhus, Svein; Nicholls, Keith W.; Stevens, Craig; Fernandez, Denise; Cimoli, Laura; Jacobs, Stanley S.; Morrison, Adele K.; Hogg, Andrew McC.; Haumann, F. Alexander; Mashayek, Ali; Wang, Zhaomin; Kerr, Rodrigo; Williams, Guy D.; Lee, Won Sang (Journal article; Peer reviewed, 2023)
      Dense, cold waters formed on Antarctic continental shelves descend along the Antarctic continental margin, where they mix with other Southern Ocean waters to form Antarctic Bottom Water (AABW). AABW then spreads into the ...

    • Student guides: supporting learning from laboratory experiments through across-course collaboration 

      Daae, Kjersti; Darelius, Elin Maria K.; Årvik, Anne Digranes; Glessmer, Mirjam Sophia (Journal article; Peer reviewed, 2023)
      We have observed that students often struggle with laboratory experiments. There is a high threshold to getting involved hands-on for fear of ruining an experiment, losing time, or breaking the equipment. More importantly, ...

    • On the Origins of Open Ocean Oxygen Minimum Zones 

      Davila, Xabier; Olsen, Are; Lauvset, Siv Kari; McDonagh, Elaine Louise; Brakstad, Ailin; Gebbie, Geoffrey (Journal article; Peer reviewed, 2023)
      Recent work suggests that Oxygen Minimum Zones (OMZs) are sustained by the supply of oxygen-poor waters rather than the export of organic matter from the local surface layer and its subsequent remineralization inside OMZs. ...

    • FLIIMP - a community software for the processing, calibration, and reporting of liquid water isotope measurements on cavity-ring down spectrometers 

      Sodemann, Harald; Mørkved, Pål Tore; Wahl, Sonja (Journal article; Peer reviewed, 2023)
      Precise and accurate measurements of the stable isotope composition from precipitation, land ice, runoff, and oceans provide critical information on Earth's water cycle. The analysis, post-processing, and calibration of ...

    • Decadal Trends in the Oceanic Storage of Anthropogenic Carbon From 1994 to 2014 

      Müller, Jens Daniel; Gruber, N.; Carter, B.; Feely, R.; Ishii, M.; Lange, N.; Lauvset, Siv Kari; Murata, A.; Olsen, Are; Pérez, F.F.; Sabine, C.; Tanhua, T.; Wanninkhof, R.; Zhu, D. (Journal article; Peer reviewed, 2023)
      The oceanic uptake and resulting storage of the anthropogenic CO2 (Cant) that humans have emitted into the atmosphere moderates climate change. Yet our knowledge about how this uptake and storage has progressed in time ...

    • Deconstructing Future AMOC Decline at 26.5°N 

      Asbjørnsen, Helene; Årthun, Marius (Journal article; Peer reviewed, 2023)
      The Atlantic Meridional Overturning Circulation (AMOC) is frequently used to diagnose the state of the North Atlantic circulation, but as an integrated quantity the AMOC strength does not necessarily mirror changes in the ...