Full Record - Antarctic and Greenland Ice Sheet mass balance 1992-2020 for IPCC AR6

Antarctic and Greenland Ice Sheet mass balance 1992-2020 for IPCC AR6

GB/NERC/BAS/PDC/01477

Abstract:
This dataset contains rates of mass change and cumulative mass change and their associated uncertainty for the Antarctic Ice Sheet (in its entirety and split into West Antarctica, East Antarctica and the Antarctic Peninsula), the Greenland Ice Sheet, and their sum between 1992 and 2020. The data are reconciled estimates of mass balance from three independent satellite-based techniques: altimetry, gravimetry and input-output method. This dataset is part of the Ice Sheet Mass Balance Intercomparison Exercise (IMBIE).

This work is an outcome of the Ice Sheet Mass Balance Inter-Comparison Exercise IMBIE) supported by the ESA Climate Change Initiative and the NASA Cryosphere Program. Andrew Shepherd was additionally supported by a Royal Society Wolfson Research Merit Award and the UK Natural Environment Research Council Centre for Polar Observation and Modelling (cpom30001).

Citation:
Shepherd, A., Ivins, E., Rignot, E., Smith, B., van den Broeke, M., Velicogna, I., Whitehouse, P., Briggs, K., Joughin, I., Krinner, G., Nowicki, S., Payne, A., Scambos, T., Schlegel, N., A, G., Agosta, C., Ahlstrøm, A., Babonis, G., Barletta, V., ... Wuite, J. (2021). Antarctic and Greenland Ice Sheet mass balance 1992-2020 for IPCC AR6 (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/77b64c55-7166-4a06-9def-2e400398e452

Access Data

GET DATA

https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=77b64c55-7166-4a06-9def-2e400398e452

PROJECT HOME PAGE

http://imbie.org/

REFERENCE MATERIALS

SOFTWARE PACKAGES

https://github.com/IMBIE

License

Access:	No restrictions apply.
Use:	Data supplied under Open Government Licence v3.0 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/.

Authors

Name	UK Polar Data Centre
Role(s)	Metadata Author
Organisation	British Antarctic Survey

Name	Andrew Shepherd
Role(s)	Investigator, Technical Contact
Organisation	University of Leeds

Name	Greg Babonis
Role(s)	Investigator
Organisation	State University of New York at Buffalo

Name	Beata Csatho
Role(s)	Investigator
Organisation	State University of New York at Buffalo

Name	Andreas Groh
Role(s)	Investigator
Organisation	Technische Universität Dresden

Name	Edward Hanna
Role(s)	Investigator
Organisation	University of Lincoln

Name	Sebastian Mernild
Role(s)	Investigator
Organisation	University of Bergen

Name	Himanshu Save
Role(s)	Investigator
Organisation	University of Texas

Name	Lev Tarasov
Role(s)	Investigator
Organisation	Memorial University of Newfoundland

Name	David Wiese
Role(s)	Investigator
Organisation	NASA Jet Propulsion Laboratory

Name	Pippa Whitehouse
Role(s)	Investigator
Organisation	Durham University

Name	Andreas Ahlstrøm
Role(s)	Investigator
Organisation	Geological Survey of Denmark and Greenland

Name	Jennifer Bonin
Role(s)	Investigator
Organisation	University of South Florida

Name	Richard Cullather
Role(s)	Investigator
Organisation	NASA Goddard Space Flight Center

Name	Ernst Schrama
Role(s)	Investigator
Organisation	Delft University of Technology

Name	Ludwig Schröder
Role(s)	Investigator
Organisation	Technische Universität Dresden

Name	Ki-Weon Seo
Role(s)	Investigator
Organisation	Seoul National University

Name	Sebastian B Simonsen
Role(s)	Investigator
Organisation	Technical University of Denmark

Name	Giorgio Spada
Role(s)	Investigator
Organisation	Università di Urbino Carlo Bo

Name	Tyler Sutterley
Role(s)	Investigator
Organisation	NASA Jet Propulsion Laboratory

Name	Thomas Slater
Role(s)	Investigator
Organisation	University of Leeds

Name	Kate Briggs
Role(s)	Investigator
Organisation	University of Leeds

Name	Ian Joughin
Role(s)	Investigator
Organisation	University of Washington

Name	Nicole Schlegel
Role(s)	Investigator
Organisation	NASA Jet Propulsion Laboratory

Name	Geruo A
Role(s)	Investigator
Organisation	University of California

Name	Martin Horwath
Role(s)	Investigator
Organisation	Technische Universität Dresden

Name	Peter L Langen
Role(s)	Investigator
Organisation	Danish Meteorological Institute

Name	Matthieu Talpe
Role(s)	Investigator
Organisation	NASA Jet Propulsion Laboratory

Name	Thomas Wagner
Role(s)	Investigator
Organisation	NASA Headquarters

Name	Bert Wouters
Role(s)	Investigator
Organisation	Utrecht University

Name	Gorka Moyano
Role(s)	Investigator
Organisation	isardSAT

Name	Erik Ivins
Role(s)	Investigator
Organisation	NASA Jet Propulsion Laboratory

Name	Ben Smith
Role(s)	Investigator
Organisation	University of Washington

Name	Michiel R van den Broeke
Role(s)	Investigator
Organisation	Utrecht University

Name	Sophie Nowicki
Role(s)	Investigator
Organisation	NASA Goddard Space Flight Center

Name	Alex Gardner
Role(s)	Investigator
Organisation	NASA Jet Propulsion Laboratory

Name	Jan Wuite
Role(s)	Investigator
Organisation	ENVEO

Name	UK PDC
Role(s)	Investigator
Organisation	British Antarctic Survey

Name	Mark E Pattle
Role(s)	Investigator
Organisation	isardSAT

Name	Eric Rignot
Role(s)	Investigator
Organisation	University of California

Name	Isabella Velicogna
Role(s)	Investigator
Organisation	University of California

Name	Gerhard Krinner
Role(s)	Investigator
Organisation	Université Grenoble Alpes

Name	Ted Scambos
Role(s)	Investigator
Organisation	University of Colorado

Name	René Forsberg
Role(s)	Investigator
Organisation	Technical University of Denmark

Name	Anna E Hogg
Role(s)	Investigator
Organisation	University of Leeds

Name	Hubert Gallee
Role(s)	Investigator
Organisation	Université Grenoble Alpes

Name	Lin Gilbert
Role(s)	Investigator
Organisation	University College London

Name	Brian Gunter
Role(s)	Investigator
Organisation	Georgia Institute of Technology

Name	Shfaqat Khan
Role(s)	Investigator
Organisation	Technical University of Denmark

Name	Kristian K Kjeldsen
Role(s)	Investigator
Organisation	Geological Survey of Denmark and Greenland

Name	Hannes Konrad
Role(s)	Investigator
Organisation	Deutscher Wetterdienst

Name	Benoit Lecavalier
Role(s)	Investigator
Organisation	Memorial University of Newfoundland

Name	Bryant Loomis
Role(s)	Investigator
Organisation	NASA Goddard Space Flight Center

Name	Scott Luthcke
Role(s)	Investigator
Organisation	NASA Goddard Space Flight Center

Name	Malcolm McMillan
Role(s)	Investigator
Organisation	University of Lancaster

Name	Daniele Melini
Role(s)	Investigator
Organisation	Istituto Nazionale di Geofisica e Vulcanologia

Name	Yara Mohajerani
Role(s)	Investigator
Organisation	University of California

Name	Philip Moore
Role(s)	Investigator
Organisation	Newcastle University

Name	Ruth Mottram
Role(s)	Investigator
Organisation	Danish Meteorological Institute

Name	Jeremie Mouginot
Role(s)	Investigator
Organisation	Univeristy of California

Name	Alan Muir
Role(s)	Investigator
Organisation	University College London

Name	Thomas Nagler
Role(s)	Investigator
Organisation	ENVEO

Name	Johan Nilsson
Role(s)	Investigator
Organisation	NASA Jet Propulsion Laboratory

Name	Brice Noël
Role(s)	Investigator
Organisation	Utrecht University

Name	Inès Otosaka
Role(s)	Investigator
Organisation	University of Leeds

Name	W R Peltier
Role(s)	Investigator
Organisation	University of Toronto

Name	Roelof Rietbroek
Role(s)	Investigator
Organisation	University of Bonn

Name	Helmut Rott
Role(s)	Investigator
Organisation	ENVEO

Name	Willem Jan van de Berg
Role(s)	Investigator
Organisation	Utrecht University

Name	Antony Payne
Role(s)	Investigator
Organisation	University of Bristol

Name	Valentina R Barletta
Role(s)	Investigator
Organisation	Technical University of Denmark

Name	Anders A Bjørk
Role(s)	Investigator
Organisation	University of Copenhagen

Name	Alejandro Blazquez
Role(s)	Investigator
Organisation	Université de Toulouse

Name	Louise Sandberg Sørensen
Role(s)	Investigator
Organisation	Technical University of Denmark

Name	Ingo Sasgen
Role(s)	Investigator
Organisation	Alfred Wegener Institute

Name	Denis Felikson
Role(s)	Investigator
Organisation	NASA Goddard Space Flight Center

Name	Cécile Agosta
Role(s)	Investigator
Organisation	University of Liège

Name	William Colgan
Role(s)	Investigator
Organisation	Geological Survey of Denmark and Greenland

Name	Marcus E Engdahl
Role(s)	Investigator
Organisation	ESA-ESRIN

Name	Xavier Fettweis
Role(s)	Investigator
Organisation	University of Liège

Name	Noel Gourmelen
Role(s)	Investigator
Organisation	University of Edinburgh

Name	Christopher Harig
Role(s)	Investigator
Organisation	University of Arizona

Name	Veit Helm
Role(s)	Investigator
Organisation	Alfred Wegener Institute

Name	Alexander Horvath
Role(s)	Investigator
Organisation	Technical University Munich

Name	Grace Nield
Role(s)	Investigator
Organisation	Durham University

Name	Nadège Pie
Role(s)	Investigator
Organisation	University of Texas

Name	Bernd Scheuchl
Role(s)	Investigator
Organisation	University of California

Name	Wouter van der Wal
Role(s)	Investigator
Organisation	Delft University of Technology

Name	Melchior van Wessem
Role(s)	Investigator
Organisation	Utrecht University

Name	Bramha Dutt Vishwakarma
Role(s)	Investigator
Organisation	University of Stuttgart

Name	David Wilton
Role(s)	Investigator
Organisation	University of Sheffield

Basic Information

Creation Date:	2021-03-15
Dataset Progress:	Complete
Dataset Language:	English
ISO Topic Categories:	Climatology/Meteorology/Atmosphere Environment Geoscientific Information Oceans
Parameters:	Cryosphere > Glaciers/Ice Sheets Cryosphere > Glaciers/Ice Sheets > Glacier Mass Balance/Ice Sheet Mass Balance Hydrosphere > Glaciers/Ice Sheets Hydrosphere > Glaciers/Ice Sheets > Glacier Mass Balance/Ice Sheet Mass Balance Oceans > Coastal Processes > Sea Level Rise

Additional Information

Reference:	Shepherd, A., Ivins, E. et al. Mass balance of the Antarctic Ice Sheet from 1992 to 2017. Nature 558, 219-222 (2018) doi:10.1038/s41586-018-0179-y. Shepherd, A., Ivins, E., Rignot, E. et al. Mass balance of the Greenland Ice Sheet from 1992 to 2018. Nature (2019) doi:10.1038/s41586-019-1855-2.
Quality:	The data are reconciled estimates from 46 individual satellite-based surveys derived from the altimetry, gravimetry and input-output techniques. The respective one sigma uncertainties for each reconciled dataset are provided.
Lineage/Methodology:	The data used to produce this reconciled mass balance estimate were gathered in the framework of the IMBIE project. In total, 46 independent satellite estimates of mass change (21 Antarctica, 25 Greenland) were used to produce this final dataset. The methodology to aggregate these into a final estimate are described in both Shepherd et al (2018) and Shepherd et al (2019).

Extent

Temporal Coverage:
Start Date	1992-01-01
End Date	2020-12-31

Spatial Coverage:
Latitude
Southernmost	60
Northernmost	90
Longitude
Westernmost	-80
Easternmost	10
Altitude
Min Altitude	N/A
Max Altitude	N/A
Depth
Min Depth	N/A
Max Depth	N/A

Latitude
Southernmost	-90
Northernmost	-60
Longitude
Westernmost	-180
Easternmost	180
Altitude
Min Altitude	N/A
Max Altitude	N/A
Depth
Min Depth	N/A
Max Depth	N/A

Data Resolution:
Latitude Resolution	N/A
Longitude Resolution	N/A
Horizontal Resolution Range	N/A
Vertical Resolution	N/A
Vertical Resolution Range	N/A
Temporal Resolution	monthly
Temporal Resolution Range	N/A

Location:
Location	Greenland
Detailed Location	N/A
Location	Antarctica
Detailed Location	Antarctic Peninsula, East Antarctica, West Antarctica

Instrumentation

Data Collection:	Each dataset contributed to the IMBIE project was processed independently by their contributors and the methods and errors on their dataset have been documented in an international peer-reviewed journal. A dedicated processor was developed in Python to compute the reconciled mass balance estimate and its uncertainty, and the core code is freely available at https://github.com/IMBIE.

Storage

Distribution:
Distribution Media	Online Internet (HTTP)
Distribution Size	156 kB
Distribution Format	ASCII
Fees	N/A

Data Storage:	The data are provided in 12 CSV files, with 2 for each location. The first file "imbie_location_2021_Gt.csv" is the mass balance of the given location in Gigatonnes and the second file "imbie_location_2021_mm.csv" is the same data but converted to an equivalent sea level contribution in millimetres by assuming that 360 Gt of ice is equivalent to 1 mm sea level rise. The files contain the following variables: - Mass balance (Gt/yr or mm/yr) - Mass balance uncertainty (Gt/yr or mm/yr) - Cumulative mass balance (Gt or mm) - Cumulative mass balance uncertainty (Gt or mm) And the locations are the following: all - the sum of Antarctic and Greenland contributions antarctic_peninsula - Antarctic Peninsula antarctica - Antarctic Ice Sheet east_antarctica - East Antarctic Ice Sheet greenland - Greenland Ice Sheet west_antarctica - West Antarctic Ice Sheet