Non-Cognitive Predictors of

(1)

Non-Cognitive Predictors of

Student

Success:

A Predictive Validity

Comparison Between

Domestic and International

Students

Non-Cognitive Predictors of

Student

Success:

A Predictive Validity

Comparison Between

Domestic and International

Students

INTRO

•  In recent years, the outlet glaciers of the

Northeast Greenland Ice Stream (NEGIS) have undergone major changes leading to increased mass flux from the ice sheet into the ocean.

•  Glacier thinning & retreat has been attributed to increasing ocean temperatures.

•  This study shows first ocean temperatures measured at Zachariæ Isstrøm and time series of heat flux below the 79 North

Glacier.

Observing the oceanic heat flux toward retreating outlet glaciers in NE-Greenland

Janin Schaffer, Torsten Kanzow, Wilken-Jon von Appen, Luisa von Albedyll, Gereon Budéus, Jan Erik Arndt, and Andreas Münchow

RESULTS

•  1°C-warm waters of Atlantic origin at 300 to 600-m depth are in direct contact with the

calving front of Zachariæ Isstrøm.

16. Oktober 2014 1

Proposal for establishing a DFG Priority Program (SPP)

SeaLevel:

Regional Sea Level Change and Society

Coordinator:

Prof. Dr. Detlef Stammer (Professor am Institut für Meereskunde/ Direktor Centrum für Erdsystemwis- senschaften und Nachhaltigkeit, Universität Hamburg; Oceanography and Climate Science)

Writing committee:

Prof. Dr. Claus Boening (Professor für Theoretische Ozeanographie, Universität Kiel, GEOMAR, Helmholtz-Zentrum für Ozeanforschung, Kiel; Ocean Dynamics and Modeling)

Prof. Dr. Anita Engels (Professorin am Institut für Soziologie, Universität Hamburg; Social Sciences) Dr. Jochen Hinkel (Leiter Forschungsstelle Adaptation and Social Learning, Global Climate Forum, Berlin; Coastal Adaption)

Prof. Dr. Martin Horwath (Lehrstuhlinhaber Geodätische Erdsystemforschung, Technische Universität Dresden Geodesy; Cryosphere)

Prof. Dr. Angelika Humbert (Leiterin der Forschergruppe Glaziologie, Alfred Wegener Institut, Univer- sität Bremen; Cryosphere)

Prof. Dr.-Ing. Jürgen Jensen (Leiter Forschungsinstitut Wasser und Umwelt, Universität Siegen;

Coastal Engineering)

Dr. Birgit Klein (Bundesamt für Seeschifffahrt und Hydrographie, Hamburg; Shelf Sea Oceanography) Dr. Volker Klemann (Geoforschungszentrum Potsdam; Solid Earth Physics)

Prof. Dr. Jürgen Kusche (Professor für Astronomische, Physikalische und Mathematische Geodäsie, Institut für Geodäsie und Geoinformation, Universität Bonn; Geodesy)

Prof. Dr. Anders Levermann (Potsdam Institut für Klimafolgeforschung; Cryosphere)

Prof. Dr. Roland Pail (Lehrstuhlinhaber Astronomische und Physikalische Geodäsie, Technische Uni- versität München; Geodesy)

Prof. Dr. Beate Ratter (Institut für Geographie, Universität Hamburg; Abteilungsleiterin Human Dimen- sions of Coastal Areas, Institut für Küstenforschung, Helmholtz-Zentrum Geesthacht, Social Sciences) Prof. Dr. Monika Rhein (Prof. für Physische Ozeanographie, Universität Bremen, Oceanography) Prof. Dr. Jürgen Scheffran (Institut für Geographie, Universität Hamburg, Social Sciences)

•  Topography-control implies that the heat

supply below the 79 North Glacier is critically determined by large-scale hydrographic

variations on the continental shelf.

•  Variability on weekly timescales can be

explained by topographic Rossby waves propagating towards the coast.

Overturning below the 79 North Glacier

•  Atlantic waters flush the cavity below the 79 North Glacier (residence time of 150 days) causing high basal melt rates.

DATA

•  Bathymetry from multi-beam surveys

•  Hydrography from ship-lowered, helicopter- based and moored CTDs

•  Velocities from moored ADCPs

Ekman Pumping

•  Dispersive topographic Rossby waves with a period near 20 days propagate along

Norske Trough to the coast.

•  The wave is generated by Ekman pump- ing over the shelf break.

•  Annual mean overturn- ing rate: 42 ± 12 mSv

•  Annual mean heat

transport: 166 ± 64 GW

•  Mean basal melt rate:

10 ± 4 m/yr

•  Outgoing glacially modified waters are 0.9°C cooler than

ingoing Atlantic waters.

Visit the poster EGU2019-14346 presented by Andreas Münchow on Thursday 16:15!

Temperature Timeseries

•  Temperatures increased simultaneously over the entire shelf in winter 2016/17.

Zachariæ Isstrøm 79 North Glacier

Trough

Norske Øer 79 North

Glacier

Zachariæ Isstrøm

Heat flux (GW) Over-

turning

(mSv) Depth of

1.2°C iso- therm (m)

2016 2017

2016

mid-shelf

inner shelf

sill at 79 North Glacier

ADDITIONAL INFORMATION

Local topography controls the

ocean heat supply to retreating outlet glaciers in NE-Greenland, namely

Zachariæ Isstrøm and the

79 North Glacier .

Non-Cognitive Predictors of

Non-Cognitive Predictors of

Student

Success:

A Predictive Validity

Comparison Between

Domestic and International

Students

Non-Cognitive Predictors of

Student

Success:

A Predictive Validity

Comparison Between

Domestic and International

Students

INTRO

• In recent years, the outlet glaciers of the

Northeast Greenland Ice Stream (NEGIS) have undergone major changes leading to increased mass flux from the ice sheet into the ocean.

• Glacier thinning & retreat has been attributed to increasing ocean temperatures.

• This study shows first ocean temperatures measured at Zachariæ Isstrøm and time series of heat flux below the 79 North

Glacier.

Observing the oceanic heat flux toward retreating outlet glaciers in NE-Greenland

Janin Schaffer, Torsten Kanzow, Wilken-Jon von Appen, Luisa von Albedyll, Gereon Budéus, Jan Erik Arndt, and Andreas Münchow

RESULTS

• 1°C-warm waters of Atlantic origin at 300 to 600-m depth are in direct contact with the

calving front of Zachariæ Isstrøm.

SeaLevel:

Regional Sea Level Change and Society

• Topography-control implies that the heat

supply below the 79 North Glacier is critically determined by large-scale hydrographic

variations on the continental shelf.

• Variability on weekly timescales can be

explained by topographic Rossby waves propagating towards the coast.

Overturning below the 79 North Glacier

• Atlantic waters flush the cavity below the 79 North Glacier (residence time of 150 days) causing high basal melt rates.

DATA

• Bathymetry from multi-beam surveys

• Hydrography from ship-lowered, helicopter- based and moored CTDs

• Velocities from moored ADCPs

Ekman Pumping

• Dispersive topographic Rossby waves with a period near 20 days propagate along

Norske Trough to the coast.

• The wave is generated by Ekman pump- ing over the shelf break.

• Annual mean overturn- ing rate: 42 ± 12 mSv

• Annual mean heat

transport: 166 ± 64 GW

• Mean basal melt rate:

10 ± 4 m/yr

• Outgoing glacially modified waters are 0.9°C cooler than

ingoing Atlantic waters.

Visit the poster EGU2019-14346 presented by Andreas Münchow on Thursday 16:15!

Temperature Timeseries

• Temperatures increased simultaneously over the entire shelf in winter 2016/17.

Zachariæ Isstrøm 79 North Glacier

Trough

Norske Øer 79 North

Glacier

Zachariæ Isstrøm

Heat flux (GW) Over-

turning

(mSv) Depth of

1.2°C iso- therm (m)

2016 2017

2016 2017

2016

mid-shelf

inner shelf

sill at 79 North Glacier

ADDITIONAL INFORMATION

Local topography controls the

ocean heat supply to retreating outlet glaciers in NE-Greenland, namely

Zachariæ Isstrøm and the

79 North Glacier .

•  In recent years, the outlet glaciers of the

•  Glacier thinning & retreat has been attributed to increasing ocean temperatures.

•  This study shows first ocean temperatures measured at Zachariæ Isstrøm and time series of heat flux below the 79 North

•  1°C-warm waters of Atlantic origin at 300 to 600-m depth are in direct contact with the

•  Topography-control implies that the heat

•  Variability on weekly timescales can be

•  Atlantic waters flush the cavity below the 79 North Glacier (residence time of 150 days) causing high basal melt rates.

•  Bathymetry from multi-beam surveys

•  Hydrography from ship-lowered, helicopter- based and moored CTDs

•  Velocities from moored ADCPs

•  Dispersive topographic Rossby waves with a period near 20 days propagate along

•  The wave is generated by Ekman pump- ing over the shelf break.

•  Annual mean overturn- ing rate: 42 ± 12 mSv

•  Annual mean heat

•  Mean basal melt rate:

•  Outgoing glacially modified waters are 0.9°C cooler than

•  Temperatures increased simultaneously over the entire shelf in winter 2016/17.