\begin{thebibliography}{21}
\providecommand{\natexlab}[1]{#1}
\expandafter\ifx\csname urlstyle\endcsname\relax
  \providecommand{\doi}[1]{doi: #1}\else
  \providecommand{\doi}{doi: \begingroup \urlstyle{rm}\Url}\fi

\bibitem[\protect\citename{pat, }????]{patran}
 (????) \emph{{Patran/Nastran, Version 2016/2018}}. MSC Software, Santa Ana,
  California

\bibitem[\protect\citename{uni, }????]{unigraphics_nx}
 (????) \emph{{Unigraphics NX, Version 12}}. Siemens, Munich, Germany

\bibitem[\protect\citename{BAS, }1994]{BAS_aircraft}
 (1994) \emph{{British Antarctic Survey: Natural Environment Research
  Council}}. Butterworth-Heinemann, Oxford, 3rd edition

\bibitem[\protect\citename{mil, }1998]{military_materials98}
 (1998) \emph{{Military Handbook Metallic Materials and Elements for Aerospace
  Vehicle Structures, MIL-HDBK-5H}}. Department of Defense

\bibitem[\protect\citename{FAA, }2018]{FAA_airworthiness}
 (2018) Part 25 airworthiness standards: Transport category airplanes: Subpart
  c – structures. \emph{Title 14: Aeronautics and Space, Electronic Code of
  Federal Regulations: e-CFR}, (8), 8

\bibitem[\protect\citename{Edwards and others, }2014]{Edwards14}
Edwards TL, Fettweis X, Gagliardini O, Gillet-Chaulet F, Goelzer H, Gregory JM,
  Hoffman M, Huybrechts P, Payne AJ, Perego M, Price S, Quiquet A and Ritz C
  (2014) Effects of uncertainty in surface mass balance-elevation feedback on
  projections of the future sea level contribution of the {G}reenland ice
  sheet. \emph{The Cryosphere}, \textbf{8}, 195--208 (\doi
  {10.5194/tc-8-195-2014})

\bibitem[\protect\citename{Gladstone and others, }2010]{gladstone_grl_10}
Gladstone RM, Lee V, Vieli A and Payne AJ (2010) {Grounding line migration in
  an adaptive mesh ice sheet model}. \emph{J. Geophys. Res.-Earth},
  \textbf{115}, F04014 (\doi {0.1029/2009JF001615})

\bibitem[\protect\citename{Goelzer and others, }2013]{Goelzer13}
Goelzer H, Huybrechts P, F\"{u}rst JJ, Nick FM, Andersen ML, Edwards TL,
  Fettweis X, Payne AJ and Shannon S (2013) Sensitivity of {G}reenland ice
  sheet projections to model formulations. \emph{J.~Glaciol.},
  \textbf{59}(216), 733--749 (\doi {10.3189/2013JoG12J182})

\bibitem[\protect\citename{Goldberg and Sergienko, }2011]{Goldberg11}
Goldberg DN and Sergienko OV (2011) Data assimilation using a hybrid ice flow
  model. \emph{The Cryosphere}, \textbf{5}, 315--327 (\doi
  {10.5194/tc-5-315-2011})

\bibitem[\protect\citename{Hanna and others, }2013]{Hanna13}
Hanna E, Navarro FJ, Pattyn F, Domingues CM, Fettweis X, Ivins ER, Nicholls RJ,
  Ritz C, Smith B, Tulaczyk S, Whitehouse PL and Zwally HJ (2013) Ice-sheet
  mass balance and climate change. \emph{Nature}, \textbf{498}, 51--59 (\doi
  {10.1038/nature12238})

\bibitem[\protect\citename{Lucas-Picher and others, }2012]{Lucas12}
Lucas-Picher P, Wulff-Nielsen M, Christensen JH, Adalgeirsd\'ottir G, Mottram
  RH and Simonsen SB (2012) Very high resolution regional climate model
  simulations over {G}reenland: identifying added value. \emph{J.~Geophys.
  Res.}, \textbf{117}, D02108 (\doi {10.1029/2011JD016267})

\bibitem[\protect\citename{Morlighem and others, }2010]{Morlighem10}
Morlighem M, Rignot E, Seroussi H, Larour E, Dhia HB and Aubry D (2010) Spatial
  patterns of basal drag inferred using control methods from a full-{S}tokes
  and simpler models for {P}ine {I}sland {G}lacier, {W}est {A}ntarctica.
  \emph{Geophys. Res. Lett.}, \textbf{37}, L14502 (\doi {10.1029/2010GL043853})

\bibitem[\protect\citename{Morlighem and others, }2011]{Morlighem11}
Morlighem M, Rignot E, Seroussi H, Larour E, Dhia HB and Aubry D (2011) A mass
  conservation approach for mapping glacier ice thickness. \emph{Geophys. Res.
  Lett.}, \textbf{38}, L19503 (\doi {10.1029/2011GL048659})

\bibitem[\protect\citename{Morlighem and others, }2013]{Morlighem13}
Morlighem M, Seroussi H, Larour E and Rignot E (2013) Inversion of basal
  friction in {A}ntartica using exact and incomplete adjoints of a higher-order
  model. \emph{J.~Geophys. Res.}, \textbf{118}, 1746--1753 (\doi
  {10.1002/jgrf.20125})

\bibitem[\protect\citename{Motyka and others, }2011]{Motyka11}
Motyka RJ, Truffer M, Fahnestock M, Mortensen J, Rysgaard S and Howat I (2011)
  Submarine melting of the 1985 {J}akobshavn {I}sbrae floating tongue and the
  triggering of the current retreat. \emph{J.~Geophys. Res.}, \textbf{116},
  F01007 (\doi {10.1029/2009JF001632})

\bibitem[\protect\citename{Paterson, }1994]{paterson94}
Paterson WSB (1994) \emph{{The physics of glaciers}}. Butterworth-Heinemann,
  Oxford, 3rd edition

\bibitem[\protect\citename{Rignot and Steffen, }2008]{Rignot08}
Rignot E and Steffen K (2008) Channelized bottom melting and stability of
  floating ice shelves. \emph{Geophys. Res. Lett.}, \textbf{35}, L02503 (\doi
  {10.1029/2007GL031765})

\bibitem[\protect\citename{Rignot and others, }2008]{Rignot08_2}
Rignot E, Box JE, Burgess E and Hanna E (2008) Mass balance of the {G}reenland
  ice sheet from 1958 to 2007. \emph{Geophys. Res. Lett.}, \textbf{35}, L02502
  (\doi {10.1029/2008GL035417})

\bibitem[\protect\citename{Rogozhina and others, }2012]{Rogozhina12}
Rogozhina I, Hagedoorn JM, Martinec Z, Fleming K, Soucek O, Greve R and Thomas
  M (2012) Effects of uncertainties in the geothermal heat flux distribution on
  the {G}reenland ice sheet: an assessment of existing heat flow models.
  \emph{J.~Geophys. Res.}, \textbf{117}, F02025 (\doi {10.1029/2011JF002098})

\bibitem[\protect\citename{Seroussi and others, }2011]{Seroussi11}
Seroussi H, Morlighem M, Rignot E, Larour E, Aubry D, Dhia HB and Kristensen SS
  (2011) Ice flux divergence anomalies on 79north glacier, {G}reenland.
  \emph{Geophys. Res. Lett.}, \textbf{38}, L09501 (\doi {10.1029/2011GL047338})

\bibitem[\protect\citename{Yan and others, }2013]{Yan13}
Yan Q, Zhang Z, Gao Y, Wang H and Johannessan OM (2013) Sensitivity of the
  modeled present-day {G}reenland ice sheet to climatic forcing and spin-up
  methods and its influence on future sea level projections. \emph{J. Geophys.
  Res. Earth Surf.}, \textbf{118}, 2174--2189 (\doi {10.1002/jgrf.20156})

\end{thebibliography}
