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IMBIE at the GlaMBIE Workshop in Edinburgh (30/08/2023):

IMBIE is a stakeholder in the Glacier Mass Balance Intercomparison Exercise (GlaMBIE) funded by ESA and Inès Otosaka, IMBIE project scientist, gave a talk on potential collaboration between the two projects to address the ambiguous inclusion of peripheral glaciers and ice caps in ice sheet mass balance assessments.

IMBIE at the 28th IUGG General Assembly in Berlin (16/07/2023):

A joint session with GlaMBIE was organised at IUGG on  ‘Mass Changes of the Cryosphere – The Need for and Lessons Learned From Intercomparison Exercises’, which included exciting talks from several international initiatives, including IMBIE and ISMIP and presentations of new mass balance estimates for mountain glaciers, polar ice sheets, as well as recommendations for snow water equivalent products.

IMBIE contributes to the World Meterological Organisation’s State of the Climate in Europe 2022 report (19/06/2023):

The IMBIE latest dataset continues to be widely used by the international scientific community and was featured in the World Meteorological Organisation’s State of the European Climate 2022 report. The report is available at

New IMBIE assessment published in Earth System Science Data (20/04/2023):

We are delighted to announce that a new IMBIE assessment has been published in Earth System Science Data. This new assessment of ice sheet mass balance shows that Melting of the polar ice sheets has caused a 21 mm rise in global sea level since 1992, almost two thirds (13.5 mm) of which is due to Greenland and one third (7.4 mm) to Antarctica. In the early 1990s, ice sheet melting accounted for only a small fraction (5.6 %) of sea level rise. However, there has been a fivefold increase in melting since then, and they are now responsible for more than a quarter (25.6 %) of all sea level rise.

IMBIE at SCAR RINGs workshop (30/06/2022)

we joined the RINGs workshop ( in Tromsø, Norway to discuss future airborne surveys around Antarctica to collect more accurate and complete reference bed topography data for robust assessments of ice discharge and mass balance

IMBIE at ESA Living Planet Symposium (26/05/2022)

we presented the recent progress and upcoming activities of IMBIE-3 at ESA Living Planet Symposium in Bonn in session ‘Mass Balance of the Cryosphere’ (

IMBIE contributes to the European State of the Climate 2021 (22/04/2022)

Greenland and Antarctica’s mass balance estimates from the latest IMBIE assessment are featured in the European State of the Climate 2021, in both the climate indicators section ( and the cryosphere thematic section (

IMBIE Executive Committee welcomes new members (12/04/2022)

We are very happy to welcome Charles Amory (Université Grenoble Alpes), Louise Sandberg Sørensen (DTU Space), , Michalea King (University of Washington), Martin Horwath (TU Dresden) and Karen Simon (TU Delft) on the IMBIE Executive Committee. They will help us steer the IMBIE activities and will contribute to discussions on topics of high importance for ice sheet mass balance assessments.

Extended deadline for IMBIE 2022 assessment, new deadline 30th April (24/03/2022)

We have decided to extend the deadline for data submissions for the IMBIE 2022 mass balance
assessment to 30 th  April.
If you are able to contribute a unique data set of ice sheet mass change over Antarctica and/or
Greenland, please consider using this extra month to submit your estimate to our 2022 IMBIE
assessment. You can submit your ice sheet mass balance estimates at:

Call for data for IMBIE 2022 assessment (06/01/2022)

We are pleased to announce that we are now opening the 2022 Ice Sheet Mass Balance Inter-
Comparison Exercise (IMBIE). Data submissions are welcomed during the three-month period from
January 1 st 2022 to until March 31 st 2022.
If you are able to contribute a unique data set of ice sheet mass change, please consider submitting
your estimate to our 2022 IMBIE assessment. Details on how to format and submit your data set can
be found at
We will be repeating this exercise every year, so there will be further opportunities to get involved if
your contribution is not ready in time.

IMBIE contribution to the IPCC Sixth Assessment Report (AR6) (10/08/2021)

IMBIE has provided an updated mass balance assessment for IPCC and this was widely used in AR6. It
is used as their primary numerical assessment of ice sheet mass balance and is in total referenced 62
times including in the Summary for Policymakers. A special acknowledgement of thanks to the
project is included in Chapter 9 of the report: “We acknowledge the contribution of invited expert
reviewers and the IMBIE Team. Their valuable input and advice have significantly improved the

Launch of IMBIE-3 (01/07/2021)

We kicked off the third phase of IMBIE in June 2021. In this new phase, we are planning on (i)
delivering annual mass balance assessments, (ii) including data from new satellite missions, (iii)
partitioning mass trends into their surface mass balance and dynamical imbalance components and
(iv) performing regional assessments.