Greenland Ice Sheets CCI Rene Forsberg, DTU Space and the Greenland CCI team Greenland Ice Sheet CCI time series

5 ECV • IV: Ice velocity (ERS, Envisat, S-1) Time series • SEC: Surface elevation changes (ERS/Envisat/CryoSat/S-3) 1991 to • GLL: Grounding lines from SAR (ERS/Envisat/S-1) present • CFL: Calving front locations (ERS/Envisat, S-2) • GMB: Gravimetric mass balance (GRACE)

ECV grid/line data SEC IV GLL CFL GMB - Horizontal resolution 5 km 500 m 200 m 200 m 50 km - Temporal resolution 1 yr 1 yr (S1) 5 yr 1 yr 1 month - Accuracy 0.1 m/yr 20 m/yr 1 km 200 m 20 GT

Jakobshavn Glacier front Calving Front Locations – Jakobshavn Glacier retreat

CCI: 30+ outlet glacier time series Elevation change ECV example: 5-year running means of ERS/Envisat altimetry CryoSat Height chages

2010-15 + 2010-11 2011-12 2012-13 2013-14 2014-15 (DTU) Ice Velocities – Sentinel-1 data (Enveo/CryoPortal)

m/yr

Kangerlussuaq glacier zoom-in 2002

S1-A/-B monitoring 2014- Early IV data (Upernavik – GEUS/DTU)

1992

2007

12 day repeat (S1A) 6 day repeat (S1A+B) Greenland-wide 3-4/yr

Greenland-wide time series Petermann glacier – Grounding line from S1A/B

IV m/yr Total mass balance – from GRACE 2002- ..

Mass loss

Sea level change (relative to IMBIE-2012)

-264±20 GT/yr

mm w.eq./yr

Airborne cryosphere measurements … NASA

• NASA-GSFC IceBridge 2010-17: 50 mio USD+ • NASA-JPL OMG (Oceans Melting Greenland) • ESA/DTU-Space airborne surveys - CryoVEx • National monitoring programs (PROMICE)

DTU ESA CryoVEx 2011-2016 (CryoSat/AltiKa validation experiments)

- Scanning lidar, GPS, INS - Ku-band radar + Ka-band next .. Ilulissat Climate Days 2015

• Ice sheet and sea ice changes, and impact on society • Ph.d. course and workshops – SVALI Nordic initiative

• ESA Climate Change Initiative workshop Malo Høj Kuko, govt minister

Support: ESA, Danish Ministry of Environment, Nordic Council, NASA/NSF. June 2-5, 2015 … 180 participants from 15 countries Arrangements: DTU, Greenland Climate Centre, ASIAQ, Iceland Met Service, DMI, GEUS

Qaanaaq iniut hunter feedback

Venue: Hotel Arctic, 4* - conference facility for 180 participants Thanks for your attention