C021
Integrating Observations and Models to Better Understand a Changing Arctic System
Session ID#: 72432
Session Description:
The Arctic environment is changing at an unprecedented rate. There is a significant need to understand ongoing Arctic system change and predict its future behavior. Model studies play a fundamental role in these tasks as a tool for experimentation and prediction. However, progress in model development often suffers from a disconnect with discoveries made in the observational community. In turn, observational activities could make better use of model guidance regarding the relative importance of various processes and improved sampling strategies. This session welcomes presentations that integrate in situ observations and remote sensing data with Arctic modeling activities to enhance the understanding of the changing Arctic system. Examples of this integration include methods to use observations in model validation and improvement, observational network design that use models to guide observations, and data assimilation activities which combine models and observations to enhance understanding and prediction of the Arctic system. Studies addressing the atmosphere, ocean, sea ice, terrestrial systems and the coupling among them, including physical, biological and biogeochemical interactions are welcome.
Index Terms:
1620 Climate dynamics [GLOBAL CHANGE]
1621 Cryospheric change [GLOBAL CHANGE]
1622 Earth system modeling [GLOBAL CHANGE]
1694 Instruments and techniques [GLOBAL CHANGE]
Primary Convener: Marika M Holland, National Center for Atmospheric Research, Boulder, CO, United States
Conveners: Donald K Perovich, Dartmouth College, Thayer School of Engineering, Hanover, NH, United States and Jennifer E Kay, Univeristy of Colorado at Boulder, Boulder, CO, United States
Primary Liaison: Marika M Holland, National Center for Atmospheric Research, Boulder, CO, United States
Exploring the Potential for ICESat-2 Observations to Advance Prediction of Arctic Sea Ice (Invited) (491937)
Sinéad Louise Farrell, University of Maryland College Park, College Park, MD, United States, Kyle Duncan, University of Maryland, Earth System Science Interdisciplinary Center, College Park, MD, United States, Ellen Buckley, University of Virginia Main Campus, Charlottesville, VA, United States, Christopher Jackson, NOAA Center for Satellite Applications and Reserch, SOCD, College Park, MD, United States and The ICESat-2 Science Team
Improved detailed Pan-Artcic snow climatology above 45° N (499267)
Céline Vargel, University of Sherbrooke - Centre d'Études Nordiques, Sherbrooke, QC, Canada, Alain Royer, University of Sherbrooke, Sherbrooke, QC, Canada, Ghislain Picard, UGA,CNRS, Institut des Geosciences de l’Environnement (IGE) UMR 5001, Grenoble, France, Isabelle Gouttevin, Météo-France -CNRS CNRM/CEN, Saint Martin d'Heres, France and Marie Dumont, Météo-France -CNRS CNRM/CEN, Saint Martin d'Hères, France
Simulation of Cloud, Radiation, and Surface Heat Flux in Svalbard Using Polar WRF with 3DVAR (504461)
Dae-Hui Kim, Yonsei University, Seoul, Korea, Republic of (South), Hyun Mee Kim, Yonsei Univ, Seoul, Korea, Republic of (South) and Jinkyu Hong, Yonsei University, Department of Atmospheric Sciences, Seoul, South Korea
Impact of thawing permafrost and frozen soils on Arctic freshwater runoff under changing climate (518732)
Ajay Ratna Bajracharya1,2, Tricia Anne Stadnyk1,2, Oyémonbadé Hervé Rodrigue Awoye2 and Masoud Asadzadeh2, (1)University of Calgary, Department of Geography, Calgary, AB, Canada, (2)University of Manitoba, Department of Civil Engineering, Winnipeg, MB, Canada
Sea Ice Albedo Feedback: Comparison of Model and Observational Based Estimates (525323)
Aaron Donohoe, Applied Physics Laboratory University of Washington, Seattle, WA, United States, Edward Blanchard-Wrigglesworth, University of Washington Seattle Campus, Department of Atmospheric Sciences, Seattle, WA, United States, Axel J B Schweiger, University of Washington Seattle Campus, Seattle, WA, United States and Phil Rasch, Pacific Northwest National Laboratory, Richland, WA, United States
Incorporation of Observations into Regional High-Resolution Permafrost Modeling and Mapping in Alaska (528873)
Dmitry Nicolsky1, Vladimir E Romanovsky1, Matvey Vladimirovich Debolskiy1 and Chris Bailey2, (1)University of Alaska Fairbanks, Fairbanks, AK, United States, (2)University of Alaska Fairbanks, Department of Computer Science, Fairbanks, AK, United States
Evaluating the Impact of CryoSat-2 Initialization on Seasonal Ice Prediction Using the Navy Earth System Prediction Capability (549571)
Richard Arthur Allard1, Neil P Barton2, Patrick J Hogan1, Nathan T Kurtz3, E. Joseph Metzger1, Clark David Rowley1, Ole Martin Smedstad4 and Michael Phelps4, (1)Naval Research Laboratory, Stennis Space Center, MS, United States, (2)Naval Research Laboratory, Monterey, CA, United States, (3)NASA Goddard, Greenbelt, MD, United States, (4)Perspecta, Inc., Stennis Space Center, MS, United States
Large Arctic Warming from Ozone-Depleting Substances in the Latter Half of the 20th Century (551375)
Lorenzo M Polvani1,2, Michael J Previdi3, Mark Ross England4, Gabriel Chiodo4 and Karen Smith5, (1)Columbia University, Department of Applied Physics and Applied Mathematics, New York, NY, United States, (2)Lamont -Doherty Earth Observatory, Palisades, NY, United States, (3)Columbia University, Palisades, NY, United States, (4)Columbia University of New York, Palisades, NY, United States, (5)University of Toronto, Toronto, Canada
Using Satellite Snowfall Rate Observations to Constrain Arctic Snow-on-Sea-Ice and Ice Thickness (555351)
Alex Cabaj, University of Toronto, Department of Physics, Toronto, ON, Canada, Paul J Kushner, University of Toronto, Physics, Toronto, ON, Canada and Alek Petty, Earth System Science Interdisciplinary Center, COLLEGE PARK, MD, United States
Improved understanding of Arctic land ice loss by integrating observations and models (Invited) (557171)
Twila A Moon1, Helene L Seroussi2, Alex S Gardner2 and Andy Aschwanden3, (1)University of Colorado at Boulder, National Snow and Ice Data Center and Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States, (2)NASA Jet Propulsion Laboratory, Pasadena, CA, United States, (3)University of Alaska Fairbanks, Fairbanks, AK, United States
Arctic sea ice response to early 20th century warming (559065)
M. Kathleen Brennan, University of Washington, Atmospheric Sciences, Seattle, WA, United States, Gregory J. Hakim, University of Washington, Department of Atmospheric Sciences, Seattle, WA, United States and Edward Blanchard-Wrigglesworth, University of Washington Seattle Campus, Department of Atmospheric Sciences, Seattle, WA, United States
Changing Characteristics of Runoff and Freshwater Export From Watersheds Draining Northern Alaska (601217)
Michael A Rawlins1, Svetlana L. Stuefer2, Dmitry Nicolsky2, Lei Cai3 and Shahab Afshari4, (1)University of Massachusetts Amherst, Amherst, MA, United States, (2)University of Alaska Fairbanks, Fairbanks, AK, United States, (3)Norse Research, Bergen, Norway, (4)University of Massachusetts-Amherst, Amherst, NY, United States
Cloud-locking reveals no influence of cloud feedbacks on surface-based Arctic Amplification in CESM1 (602468)
Eleanor Middlemas, Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States, Elizabeth Maroon, University of Colorado, Boulder, Boulder, WA, United States, Jennifer E Kay, Univeristy of Colorado at Boulder, Boulder, CO, United States and Brian Medeiros, National Center for Atmospheric Research, Climate and Global Dynamics Laboratory, Boulder, CO, United States
Seasonal dynamics of North Greenland ice shelves (608819)
Shivani Ehrenfeucht1, Mathieu Morlighem2, Eric J Rignot3 and Jeremie Mouginot3, (1)University of California Irvine, Irvine, CA, United States, (2)University of California - Irvine, Irvine, CA, United States, (3)University of California Irvine, Department of Earth System Science, Irvine, CA, United States
Characterizing and Classifying the Spatial and Temporal Variability of Snow on Sea Ice to Improve Representations in Models (609744)
David Clemens-Sewall, Dartmouth College, Hanover, NH, United States, Christopher Mark Polashenski, US Army Cold Regions, Hanover, NH, United States and Donald K Perovich, USA CRREL, Hanover, NH, United States
Combining autonomous observations, reanalysis, and numerical modeling to paint a thermodynamic picture of sea ice mass balance in the Beaufort Sea. (610038)
Cameron Planck, Dartmouth College, Hanover, NH, United States, Bonnie Light, University of Washington, Seattle, WA, United States and Donald K Perovich, USA CRREL, Hanover, NH, United States
The Arctic Subpolar gyre sTate Estimate, Release 1: a nonlinear least-squares model-data synthesis for the period 2002-2017 (613809)
An T Nguyen1, Helen Pillar2, Arash Bigdeli1, Victor Ocaña2 and Patrick Heimbach1, (1)University of Texas at Austin, Oden Institute for Computational Engineering and Sciences, Austin, TX, United States, (2)University of Texas at Austin, Oden Institute for Computational Engineering and Sciences, Austin, United States
Assimilation of sea ice concentration observations within a coupled ice-ocean model (617017)
Yong-Fei Zhang1, Mitchell Bushuk2, Michael Winton2 and William J Hurlin2, (1)Princeton University, Princeton, NJ, United States, (2)Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States
A Spring Barrier for Regional Predictions of Summer Arctic Sea Ice (625304)
Mitchell Bushuk1, David B Bonan2, Michael Winton3 and Edward Blanchard-Wrigglesworth2, (1)Geophysical Fluid Dynamics Laboratory, Princeton, NJ, United States, (2)University of Washington Seattle Campus, Atmospheric Sciences, Seattle, WA, United States, (3)NOAA Geophys Fluid Dynamic, Princeton, NJ, United States
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