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Towards an Operational System for Estimating Greenland Ice Sheet Thickness Change from Altimetry

General

Organisation
Project start
01.01.2014
Project end
31.12.2018
Type of project
ARMAP/NSF
Project theme
Cryosphere
Project topic
Cryosphere

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 69.0753, -45.6708

Fieldwork start
28.04.2015
Fieldwork end
28.04.2015

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 69.2166667, -51.1

Fieldwork start
25.04.2015
Fieldwork end
02.05.2015

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 69.258888888889, -48.435

Fieldwork start
26.04.2015
Fieldwork end
26.04.2015

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 69.0951, -46.4566

Fieldwork start
27.04.2015
Fieldwork end
27.04.2015

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 69.301555555556, -47.0775

Fieldwork start
29.04.2015
Fieldwork end
29.04.2015

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 69.333722222, -46.023166666666

Fieldwork start
30.04.2015
Fieldwork end
30.04.2015

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 67.0179977417, -50.69400024414

Fieldwork start
24.04.2015
Fieldwork end
05.05.2015

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 69.2166667, -51.1

Fieldwork start
26.04.2016
Fieldwork end
03.05.2016

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 69.258888888889, -48.435

Fieldwork start
27.04.2016
Fieldwork end
27.04.2016

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 69.0951, -46.4566

Fieldwork start
30.04.2016
Fieldwork end
30.04.2016

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 69.301555555556, -47.0775

Fieldwork start
28.04.2016
Fieldwork end
28.04.2016

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 69.333722222, -46.023166666666

Fieldwork start
29.04.2016
Fieldwork end
29.04.2016

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 67.0179977417, -50.69400024414

Fieldwork start
25.04.2016
Fieldwork end
05.05.2016

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland Ice Sheet
Fieldwork location

Geolocation is 72.57, -38.48

Fieldwork start
01.05.2016
Fieldwork end
01.05.2016

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 69.095, -46.445

Fieldwork start
02.05.2017
Fieldwork end
02.05.2017

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 69.075833, -45.660833

Fieldwork start
02.05.2017
Fieldwork end
02.05.2017

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 69.053056, -44.428056

Fieldwork start
02.05.2017
Fieldwork end
02.05.2017

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 67.0179977417, -50.69400024414

Fieldwork start
01.05.2017
Fieldwork end
05.05.2017

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 69.095, -46.445

Fieldwork start
26.04.2018
Fieldwork end
29.04.2018

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 69.075833, -45.660833

Fieldwork start
26.04.2018
Fieldwork end
29.04.2018

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 69.053056, -44.428056

Fieldwork start
26.04.2018
Fieldwork end
29.04.2018

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland Ice Sheet
Fieldwork location

Geolocation is 66.480556, -46.283056

Fieldwork start
25.04.2018
Fieldwork end
25.04.2018

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork region
Greenland, Mid-West
Fieldwork location

Geolocation is 67.0179977417, -50.69400024414

Fieldwork start
24.04.2018
Fieldwork end
03.05.2018

SAR information

Project details

27.09.2018
Science / project plan

.

Science / project summary
NASA and other agencies are invested in obtaining measurements of Greenland Ice Sheet surface elevation with the objective of constraining the ice sheet’s contribution to present and future sea level rise. Air and space-based altimetry provides the only direct means for observing changes in ice thickness at high spatial resolution. A major limitation of repeat altimetry measurements, however, is that variations in the density of surface accumulation and the firn layer must be constrained in order to extract ice thickness and mass change. As thinning initiated at the margin of the ice sheet propagates inland this limitation is becoming more problematic for two reasons: first, as thinning propagates and diffuses, the rate of thinning decreases relative to variations in accumulation and compaction, becoming more difficult to observe. Second, substantial thinning is now occurring in the wet snow and percolation zones of the ice sheet where variations in density are particularly unconstrained and models perform poorly. Additionally, recent warming and historically extreme melt events may be substantially changing the density of the firn, effecting altimeter measurements. Researchers on this project aim to develop and test deploy in situ sensor packages that will aid the deconvolution of surface change observations. Each sensor package will consist of a device for measuring deep-firn compaction, a snow pillow for measuring accumulation mass, and an echo sounder for measuring accumulation thickness. The sensors will broadcast their data daily via iridium uplink and will be designed to withstand at least 2 years of accumulation, depending on location, reducing the revisit time. The sensor data will be used to calibrate meteorological reanalysis model output that will drive a surface accumulation and firn compaction model. The goal of this project will be to provide a foundation for a more extensive operational system in concert with the launch of ICESat-2 planned for 2018.
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