Reanalysis surface mass balance of the Greenland ice sheet along K-transect (2000-2014)
Navari, M.; Margulis, S.A.; Tedesco, M.; Fettweis, X.; van de Wal, R.S.W. (2021). Reanalysis surface mass balance of the Greenland ice sheet along K-transect (2000-2014). Geophys. Res. Lett. 48(17): e2021GL094602. https://dx.doi.org/10.1029/2021GL094602 In: Geophysical Research Letters. American Geophysical Union: Washington. ISSN 0094-8276; e-ISSN 1944-8007, more |  |
| Author keywords | Greenland ice sheet; surface mass balance; data assimilation; particle batch smoother; K-transect stations |
| Authors | | Top | - Navari, M.
- Margulis, S.A.
- Tedesco, M.
| - Fettweis, X., more
- van de Wal, R.S.W.
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| Abstract | Accurate estimates of surface mass balance over the Greenland ice sheet (GrIS) would contribute to understanding the cause of recent changes and would help to better estimate the future contribution of the GrIS to sea-level rise. Given the limitations of in-situ measurements, modeling, and remote sensing, it is critical to explore the opportunity to merge the available data to better characterize the spatial and temporal variation of the GrIS surface mass balance (SMB). This work utilizes a particle batch smoother data assimilation technique that yields SMB estimates that benefit from the snow model Crocus and a 16-day albedo product derived from satellite remote sensing data. Comparison of the results against in-situ SMB measurements shows that the assimilation of the albedo product reduces the root mean square error of the posterior estimates of SMB by 51% and reduces bias by 95%. |
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