Presentation is loading. Please wait.

Presentation is loading. Please wait.

REGINA status update, 21 May 2015 Page 1 Regional glacial isostatic adjustment and CryoSat elevation rate corrections in Antarctica (REGINA) – Supplementary.

Published byGladys Banks Modified over 9 years ago

Similar presentations

Presentation on theme: "REGINA status update, 21 May 2015 Page 1 Regional glacial isostatic adjustment and CryoSat elevation rate corrections in Antarctica (REGINA) – Supplementary."— Presentation transcript:

1 REGINA status update, 21 May 2015 Page 1 Regional glacial isostatic adjustment and CryoSat elevation rate corrections in Antarctica (REGINA) – Supplementary Study Contract-Nr.: 4000107393/12/I-NB REGINA Status Update 22 May 2015 STSE: CryoSat + Cryosphere

2 REGINA status update, 21 May 2015 Page 2 Outline Characteristic of new data sets (altimetry & GPS) 1 st order GIA estimate (difference phase 1 and 2) Impact of altimetry on GIA estimate

3 REGINA status update, 21 May 2015 Page 3 Altimetry annual rates

4 REGINA status update, 21 May 2015 Page 4 Cluster analysis of GPS Raw data shown here → Symbol area inversely proportional to error. Discrepant sites in a region are often lower quality. Weighted average of nearby sites will be minimally affected by low-quality data.

5 REGINA status update, 21 May 2015 Page 5 Clustered GPS data Iterative clustering of sites up to 200 km separation. No threshold for velocity diff. Weighted mean of velocities, simple mean of site coords in each cluster. Far fewer regional discrepancies.

6 REGINA status update, 21 May 2015 Page 6 GIA estimate (du/dt) 2003-2009 2003-2013

7 REGINA status update, 21 May 2015 Page 7 GIA estimate (de/dt) 2003-20092003-2013

8 REGINA status update, 21 May 2015 Page 8 Comparison: Phase 1 and Phase 2 Phase 1Phase 2 2003-2009 GRACEAltimetry

9 REGINA status update, 21 May 2015 Page 9 dh/dt Amundsen Sea Embayment (ASE) Phase 1Phase 2 2003-2009 Phase 2 2003-2013

10 REGINA status update, 21 May 2015 Page 10 Comparison: Phase 1 and Phase 2 Uniform errors of annual rates Uniform density: 910 kg/m³ 1 st order GIA estimate: “GRACE minus altimetry” 2003-2009

11 REGINA status update, 21 May 2015 Page 11 Comparison: Phase 1 and Phase 2 1 st order GIA estimate: “GRACE minus altimetry” Non-uniform errors of dh/dt annual rates Uniform density: 910 kg/m³ 2003-2009

12 REGINA status update, 21 May 2015 Page 12 Comparison: Phase 1 and Phase 2 1 st order GIA estimate: “GRACE minus altimetry” Uniform errors of dh/dt annual rates Firn & density model applied 2003-2009

13 REGINA status update, 21 May 2015 Page 13 Comparison: Phase 1 and Phase 2 1 st order GIA estimate: “GRACE minus altimetry” Uniform errors of dh/dt annual rates Firn & density model applied 2003-2013

14 REGINA status update, 21 May 2015 Page 14 Fully coupled 3D simulation Ice model: Pollard & DeConto (2009)

15 REGINA status update, 21 May 2015 Page 15 Discussion Where do dh/dt differences come from? How can density model for Amundsen Sea Embayment be improved? What could be best way to constrain GIA estimate: Introduction of a priori constraint on GIA / past loading Force smoothness of recovered field? A posteriori limitation of spectral range? Should 2010-2013 be included (CS2)?

Download ppt "REGINA status update, 21 May 2015 Page 1 Regional glacial isostatic adjustment and CryoSat elevation rate corrections in Antarctica (REGINA) – Supplementary."

Similar presentations

Evaluating the Effects of Business Register Updates on Monthly Survey Estimates Daniel Lewis.

Evaluating the Effects of Business Register Updates on Monthly Survey Estimates Daniel Lewis.
Spatial point patterns and Geostatistics an introduction

Spatial point patterns and Geostatistics an introduction
Robin Hogan A variational scheme for retrieving rainfall rate and hail intensity.

Robin Hogan A variational scheme for retrieving rainfall rate and hail intensity.
Geodetic monitoring of crustal deformation in Dronning Maud Land, Antarctica Hannu Koivula, Jaakko Mäkinen, Joel Ahola and Markku Poutanen Finnish Geodetic.

Geodetic monitoring of crustal deformation in Dronning Maud Land, Antarctica Hannu Koivula, Jaakko Mäkinen, Joel Ahola and Markku Poutanen Finnish Geodetic.
1 Low-Dose Dual-Energy CT for PET Attenuation Correction with Statistical Sinogram Restoration Joonki Noh, Jeffrey A. Fessler EECS Department, The University.

1 Low-Dose Dual-Energy CT for PET Attenuation Correction with Statistical Sinogram Restoration Joonki Noh, Jeffrey A. Fessler EECS Department, The University.
Clima en España: Pasado, presente y futuro Madrid, Spain, 11 – 13 February 1 IMEDEA (UIB - CSIC), Mallorca, SPAIN. 2 National Oceanography Centre, Southampton,

Clima en España: Pasado, presente y futuro Madrid, Spain, 11 – 13 February 1 IMEDEA (UIB - CSIC), Mallorca, SPAIN. 2 National Oceanography Centre, Southampton,
Glacial Isostatic Adjustment Contributions to Tide Gauge, Altimetry and GRACE Observations Glenn Milne Dept of Earth Sciences University of Durham, UK.

Glacial Isostatic Adjustment Contributions to Tide Gauge, Altimetry and GRACE Observations Glenn Milne Dept of Earth Sciences University of Durham, UK.
Vertical Crustal Motion in the North Pacific and Implications for Tide Gauge Records and Sea Level Rise Jeff Freymueller and Christopher F. Larsen Geophysical.

Vertical Crustal Motion in the North Pacific and Implications for Tide Gauge Records and Sea Level Rise Jeff Freymueller and Christopher F. Larsen Geophysical.
A Preliminary Calibrated Deglaciation Chronology for the Eurasian Ice Complex Lev Tarasov¹, W.R. Peltier², R. Gyllencreutz³, O. Lohne³, J. Mangerud³, and.

A Preliminary Calibrated Deglaciation Chronology for the Eurasian Ice Complex Lev Tarasov¹, W.R. Peltier², R. Gyllencreutz³, O. Lohne³, J. Mangerud³, and.
Seasonal Position Variations and Regional Reference Frame Realization Jeff Freymueller Geophysical Institute University of Alaska Fairbanks.

Seasonal Position Variations and Regional Reference Frame Realization Jeff Freymueller Geophysical Institute University of Alaska Fairbanks.
Some Hydrological and Cryospheric Applications of GRACE John Wahr (U of Colorado), Sean Swenson (NCAR), Isabella Velicogna (U of California at Irvine)

Some Hydrological and Cryospheric Applications of GRACE John Wahr (U of Colorado), Sean Swenson (NCAR), Isabella Velicogna (U of California at Irvine)
The adjustment of the observations

The adjustment of the observations
111 1. SEAT Traverse The Satellite Era Accumulation Traverse (SEAT) collected near-surface firn cores and Ultra High Frequency (UHF) Frequency Modulated.

SEAT Traverse The Satellite Era Accumulation Traverse (SEAT) collected near-surface firn cores and Ultra High Frequency (UHF) Frequency Modulated.
The Four Candidate Earth Explorer Core Missions Consultative Workshop 12-14 October 1999, Granada, Spain, Revised 2006-01-05 by CCT GOCE S 43 Science and.

The Four Candidate Earth Explorer Core Missions Consultative Workshop October 1999, Granada, Spain, Revised by CCT GOCE S 43 Science and.
IceBridge Program Overview Tom Wagner IceBridge Program Scientist.

IceBridge Program Overview Tom Wagner IceBridge Program Scientist.
Comparison and Evaluation of Scatterometer (SCR) observed wind data with buoy wind data Xinzhong Zhang Remote Sensing December 8 th, 2009.

Comparison and Evaluation of Scatterometer (SCR) observed wind data with buoy wind data Xinzhong Zhang Remote Sensing December 8 th, 2009.
Reliable and Smooth Fine Granular Scalable Video Streaming Zhibo Chen Yun He 2002 IEEE Region 10 Conference on Computer, Communications, Control and Power.

Reliable and Smooth Fine Granular Scalable Video Streaming Zhibo Chen Yun He 2002 IEEE Region 10 Conference on Computer, Communications, Control and Power.
Fast integration using quasi-random numbers J.Bossert, M.Feindt, U.Kerzel University of Karlsruhe ACAT 05.

Fast integration using quasi-random numbers J.Bossert, M.Feindt, U.Kerzel University of Karlsruhe ACAT 05.
1 A New Technique for Deriving Electric Fields from Sequences of Vector Magnetograms George H. Fisher Brian T. Welsch William P. Abbett David J. Bercik.

1 A New Technique for Deriving Electric Fields from Sequences of Vector Magnetograms George H. Fisher Brian T. Welsch William P. Abbett David J. Bercik.
Time-depending validation of ocean mass anomalies from GRACE by means of satellite altimetry and numerical models Henryk Dobslaw and Maik Thomas GeoForschungsZentrum.

Time-depending validation of ocean mass anomalies from GRACE by means of satellite altimetry and numerical models Henryk Dobslaw and Maik Thomas GeoForschungsZentrum.

Similar presentations

Ads by Google