Erratum: Corrigendum: Calving fluxes and basal melt rates of Antarctic ice shelves

Depoorter, Mathieu; Bamber, Jonathan; Griggs, J. A.; Lenaerts, Jan T. M.; Ligtenberg, Stefan; Broeke, M. R. van den; Moholdt, Geir

doi:10.1038/nature12737

Cited by 4 publications

(6 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Total mass balance is determined for each drainage basin by computing the difference between SMB and GLF. Drainage basin delineation for calculating SMB is calculated from ice sheet interior velocity observations and modeling [Depoorter et al, 2013a]. SMB for the 2006-2008 epoch is calculated using the RACMO 2.3 climate model, run at 27 km resolution, and forced at its boundaries by European Centre for Medium-Range Weather Forecasts ERA interim reanalysis data [van Wessem et al, 2014].…”

Section: 1002/2017gl073087mentioning

confidence: 99%

“…SMB for the 2006-2008 epoch is calculated using the RACMO 2.3 climate model, run at 27 km resolution, and forced at its boundaries by European Centre for Medium-Range Weather Forecasts ERA interim reanalysis data [van Wessem et al, 2014]. While other studies have used SMB values from long temporal baselines to reduce interannual variability [Rignot et al, 2008;Depoorter et al, 2013a], this prevents direct comparison with other techniques which record mass change on shorter time scales. For the coastal regions of the WAIS, a conservative error estimate of 20% is used for SMB model uncertainty [van Wessem et al, 2014;Wouters et al, 2015].…”

Section: 1002/2017gl073087mentioning

confidence: 99%

“…The presence of a small bias toward thinner ice across this flight line suggests the true mass budget value lies toward the more negative end of our uncertainty bounds (which would provide closer agreement with the results from other studies). This highlights the need for improved firn air content estimates when determining grounding line discharge in regions with poor observational coverage (approximately 30% of the Antarctic grounding line) [Depoorter et al, 2013a]. Additionally, the 27 km resolution of the ice shelf thickness change correction applied to calculate mass balance for the 2006-2008 epoch may not fully capture localized enhanced basal melt occurring near the grounding line.…”

Section: 1002/2017gl073087mentioning

confidence: 99%

See 2 more Smart Citations

Mass balance reassessment of glaciers draining into the Abbot and Getz Ice Shelves of West Antarctica

Chuter

Martín-Español

Wouters

et al. 2017

Geophysical Research Letters

Self Cite

View full text Add to dashboard Cite

We present a reassessment of input‐output method ice mass budget estimates for the Abbot and Getz regions of West Antarctica using CryoSat‐2‐derived ice thickness estimates. The mass budget is 8 ± 6 Gt yr−1 and 5 ± 17 Gt yr−1 for the Abbot and Getz sectors, respectively, for the period 2006–2008. Over the Abbot region, our results resolve a previous discrepancy with elevation rates from altimetry, due to a previous 30% overestimation of ice thickness. For the Getz sector, our results are at the more positive bound of estimates from other techniques. Grounding line velocity increases up to 20% between 2007 and 2014 alongside mean elevation rates of −0.67 ± 0.13 m yr−1 between 2010 and 2013 indicate the onset of a dynamic thinning signal. Mean snowfall trends of −0.33 m yr−1 water equivalent since 2006 indicate recent mass trends are driven by both ice dynamics and surface processes.

show abstract

Section: 1002/2017gl073087mentioning

confidence: 99%

Section: 1002/2017gl073087mentioning

confidence: 99%

Section: 1002/2017gl073087mentioning

confidence: 99%

See 1 more Smart Citation

Mass balance reassessment of glaciers draining into the Abbot and Getz Ice Shelves of West Antarctica

Chuter

Martín-Español

Wouters

et al. 2017

Geophysical Research Letters

Self Cite

View full text Add to dashboard Cite

show abstract

“…One estimate of net ice loss from Antarctica, including ice shelves, is obtained by surveying and adding the mass flux from all ice shelves and comparing this freshwater mass loss with the freshwater mass gain from the continental surface mass budget. Rignot et al [70] and Depoorter et al [71] independently assessed the freshwater mass fluxes from Antarctic ice shelves. Their respective estimates for the basal melt are 1500 ±237 Gt/year and 1454 ±174 Gt/year.…”

Section: Advanced (Earlier) Freshwater Injectionmentioning

confidence: 99%

“…We add freshwater around Antarctica at coastal grid boxes (Figure S13) guided by the data of Rignot et al [70] and Depoorter et al [71]. Injection in the western hemisphere, especially from the Weddell Sea to the Ross Sea, is more than twice that in the other hemisphere (Figure 14).…”

Section: Advanced (Earlier) Freshwater Injectionmentioning

confidence: 99%

Ice Melt, Sea Level Rise and Superstorms: Evidence from Paleoclimate Data, Climate Modeling, and Modern Observations Implies that 2°C Global Warming Above the Preindustrial Level Would Be Dangerous

Hansen¹,

Sato²,

Hearty³

et al. 2020

Earth and Its Atmosphere

View full text Add to dashboard Cite

We use numerical climate simulations, paleoclimate data, and modern observations to study the effect of growing ice melt from Antarctica and Greenland. Meltwater tends to stabilize the ocean column, inducing amplifying feedbacks that increase subsurface ocean warming and ice shelf melting. Cold meltwater and induced dynamical effects cause ocean surface cooling in the Southern Ocean and North Atlantic, thus increasing Earth"s energy imbalance and heat flux into most of the global ocean"s surface. Southern Ocean surface cooling, while lower latitudes

show abstract

Antarctic ice shelf thickness from CryoSat‐2 radar altimetry

Chuter

Bamber

2015

Geophysical Research Letters

Self Cite

View full text Add to dashboard Cite

Ice shelf thickness for the whole of Antarctica is derived from 4 years (2011–2014) of CryoSat‐2 (CS2) radar altimetry measurements using the assumption that the shelves are in hydrostatic equilibrium. The satellite orbit and novel synthetic aperture radar interferometric mode of CS2 results in 92.3% data coverage over the ice shelves, with particular improvements around the grounding zone. When compared to ICESat data, surface elevations have a mean bias of less than 1 m and a fourfold reduction in standard deviation compared with the previous data set. Over the Amery Ice Shelf there is a mean thickness difference of 3.3% between radio echo sounding measurements and the CS2‐derived thicknesses, rising to 4.7% within 10 km of the grounding line. Our new data set provides key improvements in accuracy and coverage, especially in the grounding zone, allowing for reduced uncertainties in mass budget calculations, subshelf ocean and ice sheet‐shelf modeling.

show abstract

Erratum: Corrigendum: Calving fluxes and basal melt rates of Antarctic ice shelves

Cited by 4 publications

References 1 publication

Mass balance reassessment of glaciers draining into the Abbot and Getz Ice Shelves of West Antarctica

Mass balance reassessment of glaciers draining into the Abbot and Getz Ice Shelves of West Antarctica

Ice Melt, Sea Level Rise and Superstorms: Evidence from Paleoclimate Data, Climate Modeling, and Modern Observations Implies that 2°C Global Warming Above the Preindustrial Level Would Be Dangerous

Antarctic ice shelf thickness from CryoSat‐2 radar altimetry

Contact Info

Product

Resources

About