Successfully reported this slideshow.
Your SlideShare is downloading. ×

The Pan-Arctic Impacts of Thinning Sea Ice

Ad
Ad
Ad
Ad
Ad
Ad
Ad
Ad
Ad
Ad
Ad

Check these out next

1 of 72 Ad

The Pan-Arctic Impacts of Thinning Sea Ice

Download to read offline

The Arctic is rapidly changing. However, long-term observations of trends in Arctic sea-ice thickness are still quite limited. In this presentation, Zachary will discuss the different methods (satellite instruments and climate model simulations) of observing sea-ice thickness in order to understand changes in the recent Arctic amplification era. He will also highlight the far-reaching environmental and societal impacts from a thinning Arctic sea-ice cover.

The Arctic is rapidly changing. However, long-term observations of trends in Arctic sea-ice thickness are still quite limited. In this presentation, Zachary will discuss the different methods (satellite instruments and climate model simulations) of observing sea-ice thickness in order to understand changes in the recent Arctic amplification era. He will also highlight the far-reaching environmental and societal impacts from a thinning Arctic sea-ice cover.

Advertisement
Advertisement

More Related Content

Slideshows for you (20)

Similar to The Pan-Arctic Impacts of Thinning Sea Ice (20)

Advertisement

More from Zachary Labe (20)

Advertisement

The Pan-Arctic Impacts of Thinning Sea Ice

  1. 1. The Pan-Arctic Impacts of Thinning Sea Ice Zachary Labe Colorado State University 26 January 2021 Alaska Native Tribal Health Consortium (ANTHC) Alaska LEO Network Webinar
  2. 2. Warmer Colder NOW Start of satellite-era
  3. 3. 1. Compare satellite, submarine, and simulated (“reanalysis”) sea-ice thickness products 2. Analyze changes in the variability of sea-ice thickness using a reanalysis product and a global climate model 3. Quantify future projections (21st century) of Arctic sea-ice thickness and volume using a regional approach Explore changes in the temporal and spatial variability of Arctic sea-ice thickness over the satellite-era and 21st century
  4. 4. The Arctic.
  5. 5. [ SIT ] Sea Ice Thickness Depth between sea surface and ice/snow layer [ SIC ] Sea Ice Concentration Fraction (%) of seawater covered by ice Snow Ice [ SIE ] Sea Ice Extent Area of seawater covered by any amount of ice (>15%)
  6. 6. [ SIT ] Sea Ice Thickness Depth between sea surface and ice/snow layer [ SIC ] Sea Ice Concentration Fraction (%) of seawater covered by ice Snow Ice [ SIE ] Sea Ice Extent Area of seawater covered by any amount of ice (>15%)
  7. 7. [ SIT ] Sea Ice Thickness Depth between sea surface and ice/snow layer [ SIC ] Sea Ice Concentration Fraction (%) of seawater covered by ice Snow Ice [ SIE ] Sea Ice Extent Area of seawater covered by any amount of ice (>15%)
  8. 8. Observing ice.
  9. 9. SEA-ICE EXTENT 2 km
  10. 10. SEA-ICE THICKNESS 1.5 m
  11. 11. 1978 2020 1850 HadISST1 NSIDC 2010 2003 CryoSat-2 ICESat JAXA Walsh et al. Submarine Sea Ice Concentration ICESat-2 Sea Ice Thickness The sea-ice concentration record
  12. 12. 1978 2020 1850 HadISST1 NSIDC 2010 2003 CryoSat-2 ICESat JAXA Walsh et al. Submarine Sea Ice Concentration ICESat-2 Sea Ice Thickness The missing sea-ice thickness (SIT) record
  13. 13. 1978 2020 1850 HadISST1 NSIDC 2010 2003 CryoSat-2 ICESat JAXA Walsh et al. Sea Ice Concentration ICESat-2 Sea Ice Thickness ? The missing sea-ice thickness (SIT) record
  14. 14. 1978 2020 1850 HadISST1 NSIDC 2010 2003 CryoSat-2 ICESat PIOMAS JAXA Walsh et al. Sea Ice Concentration ICESat-2 Sea Ice Thickness Modeled sea-ice thickness Satellite sea-ice thickness
  15. 15. LINDSAY 2010, EOS CHANGING DATA
  16. 16. TIME SPATIAL DOMAIN PIOMAS 1979 - present pan-Arctic Submarine 1986 - 1993 upward looking sonar (narrow) ICESat 2004 - 2009 ICESat domain CryoSat-2 2011 - present pan-Arctic ICESat-2 2018 - present pan-Arctic SEA ICE DATA SETS
  17. 17. TIME SPATIAL DOMAIN PIOMAS 1979 - present pan-Arctic Submarine 1986 - 1993 upward looking sonar (narrow) ICESat 2004 - 2009 ICESat domain CryoSat-2 2011 - present pan-Arctic ICESat-2 2018 - present Pan-Arctic SEA ICE DATA SETS https://climatedataguide.ucar.edu/climate-data/sea-ice-thickness-data-sets-overview-comparison-table
  18. 18. DATA COMPARISON LABE ET AL. 2018, JCLI
  19. 19. DATA COMPARISON LABE ET AL. 2018, JCLI
  20. 20. DATA COMPARISON LABE ET AL. 2018, JCLI
  21. 21. Trends & Variability.
  22. 22. Trends Variability LABE ET AL. 2018, JCLI Less ice More ice More variability
  23. 23. Trends Variability LABE ET AL. 2018, JCLI Less ice More ice More variability
  24. 24. DECEMBER
  25. 25. 1920-1962 1980-1997 1998-2015 2006-2042 1963-2005 2043-2080 LENS LABE ET AL. 2018, JCLI
  26. 26. 1920-1962 1980-1997 1998-2015 2006-2042 1963-2005 2043-2080 LENS LABE ET AL. 2018, JCLI
  27. 27. EOF1 EOF2 1920-2005 1979-2015 PIOMAS -1 0 1 41.4% 26.3% 35.1% 13.6% 16.5% 17.3% LABE ET AL. 2018, JCLI Patterns of sea-ice variability Transpolar Drift
  28. 28. EOF1 EOF2 1920-2005 1979-2015 PIOMAS -1 0 1 41.4% 26.3% 35.1% 13.6% 16.5% 17.3% LABE ET AL. 2018, JCLI Patterns of sea-ice variability West-East Anomaly
  29. 29. Future projections.
  30. 30. Climate model projection of summer sea ice through 2100
  31. 31. LABE ET AL. 2018, JCLI
  32. 32. LABE ET AL. 2018, JCLI
  33. 33. LABE ET AL. 2018, JCLI
  34. 34. LABE ET AL. 2018, JCLI
  35. 35. LABE ET AL. 2018, JCLI
  36. 36. LABE ET AL. 2018, JCLI
  37. 37. Regional impacts.
  38. 38. THOMAN ET AL. 2020
  39. 39. Russia Alaska MODIS (Terra) Satellite on 20 February 2018
  40. 40. Changing Sea Ice Thickness MELIA ET AL., 2016 “Sea ice Decline and 21st century trans-Arctic shipping routes” PIZZOLATO ET AL., 2016 “The influence of declining sea ice on shipping activity in the Canadian Arctic” POST ET AL., 2013 “Ecological consequences of sea-ice decline” LANG ET AL., 2016 “Sea ice thickness and recent Arctic warming”
  41. 41. Visualization by Paul Arthur Berkman and Greg Fiske
  42. 42. Visualization by The New York Times
  43. 43. Visualization by The New York Times
  44. 44. Changes to weather.
  45. 45. R/V Lance – Greenland Sea – May 2017
  46. 46. R/V Lance – Greenland Sea – May 2017 Turbulent heat fluxes [ SIC ]
  47. 47. R/V Lance – Greenland Sea – May 2017 Turbulent heat fluxes [ SIC + SIT ]
  48. 48. Future Arctic How does sea-ice thickness decline influence the large- scale atmospheric response? Significant warming response over Arctic Ocean Weakening of jet stream LABE ET AL. 2018, GRL Warmer Colder Surface Air Temperature “Contributions of Ice Thickness to the Atmospheric Response From Projected Arctic Sea Ice Loss”
  49. 49. LABE ET AL. 2018, GRL High Pressure Low Pressure Sea Level Pressure (SLP)
  50. 50. Loss of sea-ice thickness reinforces large-scale atmospheric response LABE ET AL. 2018, GRL + = Sea Level Pressure (SLP)
  51. 51. Longer records.
  52. 52. “The Bear spent its most illustrious years in the treacherous waters of the Arctic in the U.S. Revenue Cutter Service. Photo courtesy of the Alaska and Polar Regions Collections, Elmer E. Rasmuson Library, University of Alaska Fairbanks.” https://www.reuters.com/investigates/special-report/climate-change-ice-shiplogs/
  53. 53. https://www.oldweather.org/
  54. 54. DECEMBER – PIOMAS-20C
  55. 55. Zachary Labe zmlabe@rams.colostate.edu @ZLabe Large regional and internal variability of sea-ice thickness Need for longer (“consistent”) satellite record Atmosphere sensitive to changes in Arctic sea-ice thickness
  56. 56. Zachary Labe zmlabe@rams.colostate.edu @ZLabe QUESTIONS… Large regional and internal variability of sea-ice thickness Need for longer (“consistent”) satellite record Atmosphere sensitive to changes in Arctic sea-ice thickness

×