Trends and Persistence in the Greenland Ice Sheet Mass

Guglielmo Maria Caporale, Luis Gil-Alana and Laura Sauci

No 10556, CESifo Working Paper Series from CESifo

Abstract: This paper examines trends and persistence in the Greenland ice sheet mass by applying fractional integration methods to a dataset constructed by Mankoff et al. (2020) on ice discharge for seven different regions of Greenland. The adopted empirical framework encompasses a wide range of stochastic processes and is informative about their dynamic and long-run properties. The main finding is that significant changes have occurred in the behaviour of the series of interest in recent years; more specifically, although a deterministic trend is not present, ice discharge in the various regions of Greenland has become a non-stationary, explosive process, with shocks having permanent effects. It appears that, as a result of global warming, the ice mass loss in Greenland has already reached a tipping point and become an irreversible process.

Keywords: Greenland ice sheet mass; long memory; fractional integration; persistence; trends (search for similar items in EconPapers)
JEL-codes: C22 Q54 (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:ces:ceswps:_10556

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