Brief communication: Preliminary ICESat-2 (Ice, Cloud and land Elevation Satellite-2) measurements of outlet glaciers reveal heterogeneous patterns of seasonal dynamic thickness change
<p>Dynamic changes of marine-terminating outlet glaciers are projected to be responsible for about half of future ice loss from the Greenland Ice Sheet. However, we lack a unified, process-based understanding that can explain the observed dynamic changes of all outlet glaciers. Many glaciers u...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2022-04-01
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| Series: | The Cryosphere |
| Online Access: | https://tc.copernicus.org/articles/16/1341/2022/tc-16-1341-2022.pdf |
| _version_ | 1819046054055641088 |
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| author | C. J. Taubenberger C. J. Taubenberger D. Felikson D. Felikson T. Neumann |
| author_facet | C. J. Taubenberger C. J. Taubenberger D. Felikson D. Felikson T. Neumann |
| author_sort | C. J. Taubenberger |
| collection | DOAJ |
| description | <p>Dynamic changes of marine-terminating outlet glaciers are projected to be
responsible for about half of future ice loss from the Greenland Ice Sheet.
However, we lack a unified, process-based understanding that can explain the
observed dynamic changes of all outlet glaciers. Many glaciers undergo
seasonal dynamic thickness changes, and classifying the patterns of seasonal
thickness change can improve our understanding of the processes that drive
glacier behavior. The Ice, Cloud and land Elevation Satellite-2 (ICESat-2)
provides space-based, seasonally repeating altimetry measurements of the ice
sheets, allowing us to quantify near-termini seasonal dynamic thickness
patterns of 37 outlet glaciers around the Greenland Ice Sheet. We classify
the glaciers into seven common patterns of seasonal thickness change over a
2-year period from 2019 to 2020. We find small groupings of neighboring
glaciers with similar patterns of seasonal thickness change, but, within larger
sectors of the ice sheet, patterns of seasonal thickness change are mostly
heterogeneous. Future studies can build upon our results by extending these
time series, comparing seasonal dynamic thickness changes with external
forcings, such as ocean temperature and meltwater runoff, and with other
dynamic variables such as seasonal glacier velocity and terminus position
changes.</p> |
| first_indexed | 2024-12-21T10:38:22Z |
| format | Article |
| id | doaj.art-dee568e1be8540128a1b039e401598cd |
| institution | Directory Open Access Journal |
| issn | 1994-0416 1994-0424 |
| language | English |
| last_indexed | 2024-12-21T10:38:22Z |
| publishDate | 2022-04-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | The Cryosphere |
| spelling | doaj.art-dee568e1be8540128a1b039e401598cd2022-12-21T19:07:01ZengCopernicus PublicationsThe Cryosphere1994-04161994-04242022-04-01161341134810.5194/tc-16-1341-2022Brief communication: Preliminary ICESat-2 (Ice, Cloud and land Elevation Satellite-2) measurements of outlet glaciers reveal heterogeneous patterns of seasonal dynamic thickness changeC. J. Taubenberger0C. J. Taubenberger1D. Felikson2D. Felikson3T. Neumann4Cryospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, United States of AmericaDepartment of Environmental Health and Engineering, Johns Hopkins University, Baltimore, MD 21218, United States of AmericaCryospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, United States of AmericaGoddard Earth Sciences Technology and Research Studies and Investigations II, Morgan State University, Baltimore, MD 21251, United States of AmericaCryospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771, United States of America<p>Dynamic changes of marine-terminating outlet glaciers are projected to be responsible for about half of future ice loss from the Greenland Ice Sheet. However, we lack a unified, process-based understanding that can explain the observed dynamic changes of all outlet glaciers. Many glaciers undergo seasonal dynamic thickness changes, and classifying the patterns of seasonal thickness change can improve our understanding of the processes that drive glacier behavior. The Ice, Cloud and land Elevation Satellite-2 (ICESat-2) provides space-based, seasonally repeating altimetry measurements of the ice sheets, allowing us to quantify near-termini seasonal dynamic thickness patterns of 37 outlet glaciers around the Greenland Ice Sheet. We classify the glaciers into seven common patterns of seasonal thickness change over a 2-year period from 2019 to 2020. We find small groupings of neighboring glaciers with similar patterns of seasonal thickness change, but, within larger sectors of the ice sheet, patterns of seasonal thickness change are mostly heterogeneous. Future studies can build upon our results by extending these time series, comparing seasonal dynamic thickness changes with external forcings, such as ocean temperature and meltwater runoff, and with other dynamic variables such as seasonal glacier velocity and terminus position changes.</p>https://tc.copernicus.org/articles/16/1341/2022/tc-16-1341-2022.pdf |
| spellingShingle | C. J. Taubenberger C. J. Taubenberger D. Felikson D. Felikson T. Neumann Brief communication: Preliminary ICESat-2 (Ice, Cloud and land Elevation Satellite-2) measurements of outlet glaciers reveal heterogeneous patterns of seasonal dynamic thickness change The Cryosphere |
| title | Brief communication: Preliminary ICESat-2 (Ice, Cloud and land Elevation Satellite-2) measurements of outlet glaciers reveal heterogeneous patterns of seasonal dynamic thickness change |
| title_full | Brief communication: Preliminary ICESat-2 (Ice, Cloud and land Elevation Satellite-2) measurements of outlet glaciers reveal heterogeneous patterns of seasonal dynamic thickness change |
| title_fullStr | Brief communication: Preliminary ICESat-2 (Ice, Cloud and land Elevation Satellite-2) measurements of outlet glaciers reveal heterogeneous patterns of seasonal dynamic thickness change |
| title_full_unstemmed | Brief communication: Preliminary ICESat-2 (Ice, Cloud and land Elevation Satellite-2) measurements of outlet glaciers reveal heterogeneous patterns of seasonal dynamic thickness change |
| title_short | Brief communication: Preliminary ICESat-2 (Ice, Cloud and land Elevation Satellite-2) measurements of outlet glaciers reveal heterogeneous patterns of seasonal dynamic thickness change |
| title_sort | brief communication preliminary icesat 2 ice cloud and land elevation satellite 2 measurements of outlet glaciers reveal heterogeneous patterns of seasonal dynamic thickness change |
| url | https://tc.copernicus.org/articles/16/1341/2022/tc-16-1341-2022.pdf |
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