Publications related to the GRACE Missions (no abstracts)

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Investigating the Influence of Climate Seasonality on Glacier Mass Changes in High Mountain Asia via GRACE Observations

Sherpa, Sonam Futi and Werth, Susanna, 2025. Investigating the Influence of Climate Seasonality on Glacier Mass Changes in High Mountain Asia via GRACE Observations. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 18:20545–20562, doi:10.1109/JSTARS.2025.3595165.

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@ARTICLE{2025IJSTA..1820545S,
       author = {{Sherpa}, Sonam Futi and {Werth}, Susanna},
        title = "{Investigating the Influence of Climate Seasonality on Glacier Mass Changes in High Mountain Asia via GRACE Observations}",
      journal = {IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing},
     keywords = {Gravimetry, gravity recovery and climate experiment/follow-on (GRACE/FO) mass change, precipitation seasonality, time-series analysis, wavelet signal processing},
         year = 2025,
        month = jan,
       volume = {18},
        pages = {20545-20562},
     abstract = "{Recent global warming has caused a rapid melting of high mountain Asia
        (HMA) glaciers. The impact of warming on glacier mass decline is
        undisputed. However, the influence of precipitation changes and
        their seasonal distribution on glacier mass remains uncertain.
        Here, using observations from satellite gravimetry complemented
        by hydrological data for seven glacier regions, we investigate
        the relationship between net glacier mass budget changes and
        seasonal precipitation patterns by applying time series and
        wavelet-based signal decomposition approaches. For a total HMA
        glacier mass loss of 22.23 8.61 Gt/yr during 20022016, the
        highest portions are contributed by the glacier regions Central
        Himalaya, Eastern Himalaya, and Tien Shan with 11.99 1.24 Gt/yr,
        8.62 0.99 Gt/yr, and 6.93 0.97 Gt/yr, respectively. We found a
        high association between glacier mass loss and increased
        rainfall during Western Himalayas monsoon season, decreased
        snowfall during postmonsoon months in Eastern Himalaya, and
        increased rainfall during the premonsoon season for Central
        Himalaya. These associations partly derive from frequency bands
        at 34.5-year and 58-year periods, which conform with typical
        repeat patterns of the South Asian Monsoon (SAM). Since
        precipitation seasonality of several HMA regions is strongly
        influenced by SAM, this raises the question of which role a
        climate change-induced SAM alteration would play in glacier
        melting. We conclude that especially summer-fed and SAM-
        dominated HMA glacier regions are vulnerable to accelerated
        melting from changes in precipitation seasonality driven by SAM
        alterations. We call for denser and more accurate spatial
        monitoring of meteorological variables to accurately predict the
        impact of monsoon alterations on future melting rates.}",
          doi = {10.1109/JSTARS.2025.3595165},
       adsurl = {https://ui.adsabs.harvard.edu/abs/2025IJSTA..1820545S},
      adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}

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