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Preußer, Andreas; Heinemann, Günther; Willmes, Sascha; Paul, Stephan (2015): Daily polynya area and ice production in the North Water polynya region. PANGAEA, https://doi.org/10.1594/PANGAEA.854921, Supplement to: Preußer, A et al. (2015): Multi-Decadal variability of polynya characteristics and ice production in the North Water Polynya by means of passive microwave and thermal infrared satellite imagery. Remote Sensing, 7(12), 15844-15867, https://doi.org/10.3390/rs71215807

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Abstract:
The North Water (NOW) Polynya is a regularly-forming area of open-water and thin-ice, located between northwestern Greenland and Ellesmere Island (Canada) at the northern tip of Baffin Bay. Due to its large spatial extent, it is of high importance for a variety of physical and biological processes, especially in wintertime. Here, we present a long-term remote sensing study for the winter seasons 1978/1979 to 2014/2015. Polynya characteristics are inferred from (1) sea ice concentrations and brightness temperatures from passive microwave satellite sensors (Advanced Microwave Scanning Radiometer (AMSR-E and AMSR2), Scanning Multichannel Microwave Radiometer (SMMR), Special Sensor Microwave Imager/Sounder (SSM/I-SSMIS)) and (2) thin-ice thickness distributions, which are calculated using MODIS ice-surface temperatures and European Center for Medium-Range Weather Forecasts (ECMWF) atmospheric reanalysis data in a 1D thermodynamic energy-balance model. Daily ice production rates are retrieved for each winter season from 2002/2003 to 2014/2015, assuming that all heat loss at the ice surface is balanced by ice growth. Two different cloud-cover correction schemes are applied on daily polynya area and ice production values to account for cloud gaps in the MODIS composites. Our results indicate that the NOW polynya experienced significant seasonal changes over the last three decades considering the overall frequency of polynya occurrences, as well as their spatial extent. In the 1980s, there were prolonged periods of a more or less closed ice cover in northern Baffin Bay in winter. This changed towards an average opening on more than 85% of the days between November and March during the last decade. Noticeably, the sea ice cover in the NOW polynya region shows signs of a later-appearing fall freeze-up, starting in the late 1990s. Different methods to obtain daily polynya area using passive microwave AMSR-E/AMSR2 data and SSM/I-SSMIS data were applied. A comparison with MODIS data (thin-ice thickness < 20 cm) shows that the wintertime polynya area estimates derived by MODIS are about 30 to 40% higher than those derived using the polynya signature simulation method (PSSM) with AMSR-E data. In turn, the difference in polynya area between PSSM and a sea ice concentration (SIC) threshold of 70% is fairly low (approximately 10%) when applied to AMSR-E data. For the coarse-resolution SSM/I-SSMIS data, this difference is much larger, particularly in November and December. Instead of a sea ice concentration threshold, the PSSM method should be used for SSM/I-SSMIS data. Depending on the type of cloud-cover correction, the calculated ice production based on MODIS data reaches an average value of 264.4 ± 65.1 km**3 to 275.7 ± 67.4 km**3 (2002/2003 to 2014/2015) and shows a high interannual variability. Our achieved long-term results underline the major importance of the NOW polynya considering its influence on Arctic ice production and associated atmosphere/ocean processes.
Coverage:
Median Latitude: 76.750000 * Median Longitude: -74.000000 * South-bound Latitude: 74.000000 * West-bound Longitude: -86.000000 * North-bound Latitude: 79.500000 * East-bound Longitude: -62.000000
Date/Time Start: 1978-11-01T00:00:00 * Date/Time End: 2015-03-31T00:00:00
Comment:
Ice production data is only available for the MODIS period (2002/2003-2014/2015). Polynya area and ice production derived from MODIS is corrected for the influence of cloud cover (coverage-correction (CC); spatial feature reconstruction (SFR)). For details on the different procedures and a definition of the reference area (i.e. polynya mask), please consult the given reference (open access).
This work was funded by the Federal Ministry of Education and Research (BMBF) under grant 03G0833D.
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Datasets listed in this Collection

  1. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area and sea ice production from thermal infrared satellite sensor MODIS in the North Water polynya region in 2002/2003. https://doi.org/10.1594/PANGAEA.854871
  2. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area and sea ice production from thermal infrared satellite sensor MODIS in the North Water polynya region in 2003/2004. https://doi.org/10.1594/PANGAEA.854872
  3. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area and sea ice production from thermal infrared satellite sensor MODIS in the North Water polynya region in 2004/2005. https://doi.org/10.1594/PANGAEA.854873
  4. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area and sea ice production from thermal infrared satellite sensor MODIS in the North Water polynya region in 2005/2006. https://doi.org/10.1594/PANGAEA.854874
  5. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area and sea ice production from thermal infrared satellite sensor MODIS in the North Water polynya region in 2006/2007. https://doi.org/10.1594/PANGAEA.854875
  6. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area and sea ice production from thermal infrared satellite sensor MODIS in the North Water polynya region in 2007/2008. https://doi.org/10.1594/PANGAEA.854876
  7. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area and sea ice production from thermal infrared satellite sensor MODIS in the North Water polynya region in 2008/2009. https://doi.org/10.1594/PANGAEA.854877
  8. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area and sea ice production from thermal infrared satellite sensor MODIS in the North Water polynya region in 2009/2010. https://doi.org/10.1594/PANGAEA.854878
  9. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area and sea ice production from thermal infrared satellite sensor MODIS in the North Water polynya region in 2010/2011. https://doi.org/10.1594/PANGAEA.854879
  10. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area and sea ice production from thermal infrared satellite sensor MODIS in the North Water polynya region in 2011/2012. https://doi.org/10.1594/PANGAEA.854880
  11. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area and sea ice production from thermal infrared satellite sensor MODIS in the North Water polynya region in 2012/2013. https://doi.org/10.1594/PANGAEA.854881
  12. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area and sea ice production from thermal infrared satellite sensor MODIS in the North Water polynya region in 2013/2014. https://doi.org/10.1594/PANGAEA.854882
  13. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area and sea ice production from thermal infrared satellite sensor MODIS in the North Water polynya region in 2014/2015. https://doi.org/10.1594/PANGAEA.854883
  14. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors AMSR-E and AMSR2 in the North Water polynya region in 2002/2003. https://doi.org/10.1594/PANGAEA.854859
  15. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors AMSR-E and AMSR2 in the North Water polynya region in 2003/2004. https://doi.org/10.1594/PANGAEA.854860
  16. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors AMSR-E and AMSR2 in the North Water polynya region in 2004/2005. https://doi.org/10.1594/PANGAEA.854861
  17. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors AMSR-E and AMSR2 in the North Water polynya region in 2005/2006. https://doi.org/10.1594/PANGAEA.854862
  18. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors AMSR-E and AMSR2 in the North Water polynya region in 2006/2007. https://doi.org/10.1594/PANGAEA.854863
  19. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors AMSR-E and AMSR2 in the North Water polynya region in 2007/2008. https://doi.org/10.1594/PANGAEA.854864
  20. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors AMSR-E and AMSR2 in the North Water polynya region in 2008/2009. https://doi.org/10.1594/PANGAEA.854865
  21. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors AMSR-E and AMSR2 in the North Water polynya region in 2009/2010. https://doi.org/10.1594/PANGAEA.854866
  22. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors AMSR-E and AMSR2 in the North Water polynya region in 2010/2011. https://doi.org/10.1594/PANGAEA.854867
  23. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors AMSR-E and AMSR2 in the North Water polynya region in 2012/2013. https://doi.org/10.1594/PANGAEA.854868
  24. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors AMSR-E and AMSR2 in the North Water polynya region in 2013/2014. https://doi.org/10.1594/PANGAEA.854869
  25. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors AMSR-E and AMSR2 in the North Water polynya region in 2014/2015. https://doi.org/10.1594/PANGAEA.854870
  26. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1978/1979. https://doi.org/10.1594/PANGAEA.854884
  27. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1979/1980. https://doi.org/10.1594/PANGAEA.854885
  28. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1980/1981. https://doi.org/10.1594/PANGAEA.854886
  29. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1981/1982. https://doi.org/10.1594/PANGAEA.854887
  30. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1982/1983. https://doi.org/10.1594/PANGAEA.854888
  31. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1983/1984. https://doi.org/10.1594/PANGAEA.854889
  32. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1984/1985. https://doi.org/10.1594/PANGAEA.854890
  33. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1985/1986. https://doi.org/10.1594/PANGAEA.854891
  34. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1986/1987. https://doi.org/10.1594/PANGAEA.854892
  35. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1987/1988. https://doi.org/10.1594/PANGAEA.854893
  36. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1988/1989. https://doi.org/10.1594/PANGAEA.854894
  37. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1989/1990. https://doi.org/10.1594/PANGAEA.854895
  38. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1990/1991. https://doi.org/10.1594/PANGAEA.854896
  39. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1991/1992. https://doi.org/10.1594/PANGAEA.854897
  40. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1992/1993. https://doi.org/10.1594/PANGAEA.854898
  41. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1993/1994. https://doi.org/10.1594/PANGAEA.854899
  42. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1994/1995. https://doi.org/10.1594/PANGAEA.854900
  43. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1995/1996. https://doi.org/10.1594/PANGAEA.854901
  44. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1996/1997. https://doi.org/10.1594/PANGAEA.854902
  45. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1997/1998. https://doi.org/10.1594/PANGAEA.854903
  46. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1998/1999. https://doi.org/10.1594/PANGAEA.854904
  47. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 1999/2000. https://doi.org/10.1594/PANGAEA.854905
  48. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 2000/2001. https://doi.org/10.1594/PANGAEA.854906
  49. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 2001/2002. https://doi.org/10.1594/PANGAEA.854907
  50. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 2002/2003. https://doi.org/10.1594/PANGAEA.854908
  51. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 2003/2004. https://doi.org/10.1594/PANGAEA.854909
  52. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 2004/2005. https://doi.org/10.1594/PANGAEA.854910
  53. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 2005/2006. https://doi.org/10.1594/PANGAEA.854911
  54. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 2006/2007. https://doi.org/10.1594/PANGAEA.854912
  55. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 2007/2008. https://doi.org/10.1594/PANGAEA.854913
  56. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 2008/2009. https://doi.org/10.1594/PANGAEA.854914
  57. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 2009/2010. https://doi.org/10.1594/PANGAEA.854915
  58. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 2010/2011. https://doi.org/10.1594/PANGAEA.854916
  59. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 2011/2012. https://doi.org/10.1594/PANGAEA.854917
  60. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 2012/2013. https://doi.org/10.1594/PANGAEA.854918
  61. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 2013/2014. https://doi.org/10.1594/PANGAEA.854919
  62. Preußer, A; Heinemann, G; Willmes, S et al. (2015): Daily polynya area from passive microwave satellite sensors SMMR, SSMI, and SSMIS in the North Water polynya region in 2014/2015. https://doi.org/10.1594/PANGAEA.854920