The SUMup dataset: compiled measurements of surface mass balance components over ice sheets and sea ice with analysis over Greenland
2018
Abstract. Increasing atmospheric temperatures over ice cover affect surface processes,
including melt, snowfall, and snow density. Here, we present the Surface Mass
Balance and Snow on Sea Ice Working Group
(SUMup) dataset, a standardized dataset of Arctic and Antarctic observations
of surface mass balance components. The July 2018 SUMup dataset consists of
three subdatasets, snow/firn density
( https://doi.org/10.18739/A2JH3D23R ), at least near-annually resolved
snow accumulation on land ice ( https://doi.org/10.18739/A2DR2P790 ), and
snow depth on sea ice ( https://doi.org/10.18739/A2WS8HK6X ), to monitor
change and improve estimates of surface mass balance. The measurements in
this dataset were compiled from field notes, papers, technical reports, and
digital files. SUMup is a compiled, community-based dataset that can be and
has been used to evaluate modeling efforts and remote sensing retrievals.
Active submission of new or past measurements is encouraged. Analysis of the
dataset shows that Greenland Ice Sheet density measurements in the top 1 m
do not show a strong relationship with annual temperature. At Summit Station,
Greenland, accumulation and surface density measurements vary seasonally with
lower values during summer months. The SUMup dataset is a dynamic, living
dataset that will be updated and expanded for community use as new
measurements are taken and new processes are discovered and quantified.
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