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Hokkaido University Collection of Scholarly and Academic Papers >
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Climate and Surface Mass Balance at Glaciar Perito Moreno, Southern Patagonia
| Title: | Climate and Surface Mass Balance at Glaciar Perito Moreno, Southern Patagonia |
| Authors: | Minowa, Masahiro Browse this author →KAKEN DB | | Skvarca, Pedro Browse this author | | Fujita, Koji Browse this author |
| Keywords: | Glaciers | | Climate change | | Climate records |
| Issue Date: | 15-Jan-2023 |
| Publisher: | American Meteorological Society |
| Journal Title: | Journal of Climate |
| Volume: | 36 |
| Issue: | 2 |
| Start Page: | 625 |
| End Page: | 641 |
| Publisher DOI: | 10.1175/JCLI-D-22-0294.1 |
| Abstract: | The mass budget of southern Patagonian glaciers is characterized by an extreme amount of surface ablation. To understand the processes controlling surface mass balance, we analyzed in situ data including meteorological variables and ablation stakes for the 25 years between 1996 and 2020 near the terminus of Glaciar Perito Moreno in southern Patagonia in South America. The mean annual temperature has increased over the study period at a rate of 0.2°C decade−1. An energy-balance model was applied to calculate a point surface mass balance, based on meteorological records. The average point surface mass balance is estimated to be -16.3 m water equivalent (w.e.) yr-1 between 1996 and 2020, decreasing at a rate in the range from-0.4 to-0.9 m w.e. yr-1 decade-1. The greatest contribution to the surface en-ergy balance was due to the sensible heat flux, and its variation drove the surface mass balance variation. The meteo-rological and surface mass balance records were compared with the Southern Annular Mode and El Niño–Southern Oscillation, which change the atmospheric circulation over southern Patagonia and influence surface mass balance near the terminus of the glacier. Our long-term dataset investigates the detailed meteorological conditions and surface mass balance and their connection with the large-scale climate variability over the last 25 years, reported for the first time in Patagonia. |
| Rights: | © Copyright 2023 American Meteorological Society (AMS). For permission to reuse any portion of this Work, please contact permissions@ametsoc.org. Any use of material in this Work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act (17 U.S. Code § 107) or that satisfies the conditions specified in Section 108 of the U.S. Copyright Act (17 USC § 108) does not require the AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a website or in a searchable database, or other uses of this material, except as exempted by the above statement, requires written permission or a license from the AMS. All AMS journals and monograph publications are registered with the Copyright Clearance Center (https://www.copyright.com). Additional details are provided in the AMS Copyright Policy statement, available on the AMS website (https://www.ametsoc.org/PUBSCopyrightPolicy). |
| Type: | article |
| URI: | http://hdl.handle.net/2115/91436 |
| Appears in Collections: | 低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 箕輪 昌紘
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