Skip to main content
Article thumbnail
Location of Repository

Evaluation of a polynya flux model by means of thermal infrared satellite estimates

By Thomas Krumpen, Sascha Willmes, Miguel Angel Morales Maqueda, Christian Hass, Jens Hoelemann, Gerdes Ruediger and David Schroeder

Abstract

We test the ability of a two-dimensional flux model to simulate polynya events with narrow open-water zones by comparing model results to ice-thickness and ice-production estimates derived from thermal infrared Moderate Resolution Imaging Spectroradiometer (MODIS) observations in\ud conjunction with an atmospheric dataset. Given a polynya boundary and an atmospheric dataset, the model correctly reproduces the shape of an 11 day long event, using only a few simple conservation laws. Ice production is slightly overestimated by the model, owing to an underestimated ice thickness. We achieved best model results with the consolidation thickness parameterization developed by Biggs\ud and others (2000). Observed regional discrepancies between model and satellite estimates might be a consequence of the missing representation of the dynamic of the thin-ice thickening (e.g. rafting). We conclude that this simplified polynya model is a valuable tool for studying polynya dynamics and estimating associated fluxes of single polynya event

Topics: Glaciology, Earth Sciences
Publisher: International Glaciological Society
Year: 2011
OAI identifier: oai:nora.nerc.ac.uk:13290

Suggested articles

Citations

  1. (1995). A method to estimate sub-pixelscale coastal polynyas with satellite passive microwave data.
  2. (1990). American Geophysical Union, 73–88.
  3. (2003). Comparison of thin ice distributions derived from RADARSAT Geophysical Processor System and advanced very high resolution radiometer data sets. doi
  4. (2002). Costal polynyas in the southern Weddell Sea: variability of the surface energy budget.
  5. (2010). Cross-validation of polynya monitoring methods from multisensor satellite and airborne data: a case study for the Laptev Sea. doi
  6. (2001). Encyclopedia of ocean sciences.
  7. (2007). Estimation of thin ice thickness and detection of fast ice from SSM/I data in the Antarctic Ocean.
  8. (2009). Growth, structure and properties of sea ice.
  9. (1997). In press. Spatiotemporal variability of polynya dynamics and ice production in the Laptev Sea between the winters of 1979/80 and 2007/ 08. Polar Res. [[AUTHOR: still in press? Only accepted papers can be referenced.
  10. (2003). MODIS sea ice products user guide.
  11. (1994). Nonlinear steadystate model of the North Water polynya, Baffin Bay.
  12. (2003). Observations of ice thickness and frazil ice in the St. Lawrence Island polynya from satellite imagery, upward looking sonar, and salinity/temperature moorings.
  13. Oceanic Technol., doi
  14. (1995). On the influence of coastline orientation on the steady state width of a latent heat polynya.
  15. (2004). Polynya dynamics: a review of observations and modeling.
  16. (2000). Polynya flux model solutions incorporating a parameterization for the collection thickness of consolidated new ice.
  17. (2007). Polynya modelling. doi
  18. (2000). Polynyas: windows to the world.
  19. (2008). Reduced ice thickness in Arctic Transpolar Drift favors rapid ice retreat.
  20. (1991). Review of intrinsic thermophysical properties of
  21. (1994). The contribution of Alaskan, Siberian, and Canadian coastal polynyas to the cold halocline layer of the Arctic Ocean.
  22. (2005). The drift of sea ice.
  23. (2002). The operational global icosahedral-hexagonal gridpoint model GME: description and high-resolution tests.
  24. (2002). The role of rafting in the mechanical redistribution of sea ice thickness.
  25. (1987). The size of wind-driven coastal polynyas.
  26. (1986). The surface heat and mass balance.
  27. (1996). The thickness distribution of sea ice and snow cover during late winter in the Bellingshausen and Amundsen Seas, doi

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.