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\begin{document}

\title{Mass~Balance of the Russian High Arctic Archipelago Between 2002 and
2017}



\author[1]{Enrico Ciraci}%
\author[2]{Isabella Velicogna}%
\affil[1]{University of California Irvine}%
\affil[2]{UCI}%


\vspace{-1em}



  
  \date{May 22, 2024}


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\begin{abstract}
We evaluate the mass balance of the Russia High Arctic Archipelago
between April 2002 and August 2016 employing independent estimates
obtained using time-variable gravity from the NASA/DLR GRACE mission and
satellite altimetry data from the NASA ICESat and the ESA CryoSat-2
missions. We present a new algorithm designed to derive ice elevation
change maps using altimetry data and we evaluate its performance over
the region of interest. Gravimetric and Altimetric observations provide
consistent results and show that over the period under analysis,
glaciers in the region have lost mass at a rate of 15 +/-7 Gt/yr
corresponding to a sea level contribution of 0.039 mm/yr. The mass loss
increased after 2010, reaching a maximum rate of 25 +/-7 Gt/yr between
2010 and 2016. The increased mass loss was associated with high thinning
rates at low elevations (below 500 m), with marine-terminating glaciers
thinning significantly faster than those terminating on land. The mass
loss process was associated to a shift in climatic conditions in the
region due to enhanced atmospheric and ocean temperatures and decreased
sea ice concentrations. These results indicate that glaciers in the
region are sensitive to variations of both climatic mass balance and ice
discharge.%
\end{abstract}%



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