Observation of Gravitational Waves from the Coalescence of a 2.5–4.5 M⊙ Compa...
2018 Machine Learning and Physical Sciences Symposium
1. @ZLabe
Zachary Labe
University of California, Irvine
Yannick Peings, Hal Stern, &
Gudrun Magnusdottir
30 May 2018
MAPS Symposium
Arctic sea ice thickness variability and
its influence on the atmospheric
response to projected sea ice loss
3. [ SIE ]
Sea Ice
Extent
Area of seawater
covered by any
amount of ice (>15%)
[ SIT ]
Sea Ice
Thickness
Depth between sea
surface and ice/snow
layer
[ SIC ]
Sea Ice
Concentration
Fraction (%) of seawater
covered by ice
Snow
Ice
4. [ SIE ]
Sea Ice
Extent
Area of seawater
covered by any
amount of ice (>15%)
[ SIT ]
Sea Ice
Thickness
Depth between sea
surface and ice/snow
layer
[ SIC ]
Sea Ice
Concentration
Fraction (%) of seawater
covered by ice
Snow
Ice
5. [ SIE ]
Sea Ice
Extent
Area of seawater
covered by any
amount of ice (>15%)
[ SIT ]
Sea Ice
Thickness
Depth between sea
surface and ice/snow
layer
[ SIC ]
Sea Ice
Concentration
Fraction (%) of seawater
covered by ice
Snow
Ice
6. 1978 20171850
HadISST1 - SIC
NSIDC - SIC
20102003
CryoSat-2
SIT
ICESat
SIT
PIOMAS - SIT
JAXA - SIC
Walsh et al. - SIC
Submarine - SIT
The missing
sea ice thickness
(SIT) record
SeaIceConcentration(SIC)
7. 1978 20171850
HadISST1 - SIC
NSIDC - SIC
20102003
CryoSat-2
SIT
ICESat
SIT
PIOMAS - SIT
JAXA - SIC
Walsh et al. - SIC
SeaIceConcentration(SIC)
Modeled sea ice thickness
Satellite sea ice thickness
8. 1978 20171850
HadISST1 - SIC
NSIDC - SIC
20102003
CryoSat-2
SIT
ICESat
SIT
PIOMAS - SIT
JAXA - SIC
Walsh et al. - SIC
SeaIceConcentration(SIC)
?
The missing
sea ice thickness
(SIT) record
13. Atmospheric General Circulation Model
NAME THICKNESS FORCING DURATION
HIC Constant 2-m SIT ONDJFM;
100 members
HIT Average 1976-2005 LENS SIT ONDJFM;
100 members
FIT Average 2051-2080 LENS SIT ONDJFM;
100 members
All experiments have average 1976-2005 LENS : SST and SIC
14. NAME THICKNESS FORCING DURATION
FIC Constant 2-m SIT
Future LENS SIC
ONDJFM;
100 members
FICT Future LENS SIT
Future LENS SIC
ONDJFM;
100 members
FPOL Future: >66.6◦N; 2-m elsewhere ONDJFM;
100 members
FSUB Future: <66.6◦N; 2-m elsewhere ONDJFM;
100 members
All experiments have SST prescribed following Screen et al, [2013]
Atmospheric General Circulation Model
15. !SIT = FIT – HIT
!SIC = FIC – HIC
!NET = FICT – HIT• Loss of sea ice
thickness and
concentration
• Loss of sea ice
thickness
• Loss of sea ice
concentration
18. Future Arctic
What happens to the
weather from a loss of sea
ice area and sea ice
thickness?
Significant warming over the
Arctic Ocean
Cooling over Eurasia
adapted from Labe et al. 2018, GRL
19. Future Arctic
Significant warming over the
Arctic Ocean
Cooling over Eurasia
What happens to the
weather from a loss of sea
ice area and sea ice
thickness?
adapted from Labe et al. 2018, GRL
20. Future Arctic
Increase in turbulent heat
fluxes exchanged from open
ocean and thinner ice
What happens to the
weather from a loss of sea
ice area and sea ice
thickness?
adapted from Labe et al. 2018, GRL