Surface energy balance observed at the SIGMA-A site on the northwest Greenland ice sheet
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- HIROSE Satoshi
- New Chitose Aviation Weather Station, Japan Meteorological Agency,
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- AOKI Teruo
- National Institute of Polar Research, Meteorological Research Institute, Japan Meteorological Agency,
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- NIWANO Masashi
- Meteorological Research Institute, Japan Meteorological Agency,
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- MATOBA Sumito
- Institute of Low Temperature Science, Hokkaido University,
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- TANIKAWA Tomonori
- Meteorological Research Institute, Japan Meteorological Agency,
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- YAMAGUCHI Satoru
- 防災科学技術研究所雪氷防災研究センター
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- YAMASAKI Tetsuhide
- Avangnaq Arctic Environmental Research Activity Project,
Bibliographic Information
- Other Title
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- 北西グリーンランド氷床上SIGMA-Aサイトで 観測された雪面熱収支の特徴
- ホクセイ グリーンランド ヒョウショウ ジョウ SIGMA-Aサイト デ カンソク サレタ セツメン ネツ シュウシ ノ トクチョウ
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Abstract
To clarify the factors contributing to surface melting, we investigated the surface energy balance at the SIGMA-A site on the northwest Greenland ice sheet from 2012 to 2019 using meteorological data observed at an automated weather station. We performed quality control prior to data analysis. Our analysis showed that the amount of surface melting increased in years with warm summers, when sensible heat transport and net shortwave radiation increased. Positive feedback between snow grain growth and near-infrared albedo reduction played an important role in the melting process. The relationship between the North Atlantic Oscillation index and surface melt flux revealed that July 2012 was an extraordinary year, characterised by a significant increase in melting caused partly by increased downward longwave radiation from the lower clouds, which suppressed net longwave cooling, and partly by the increases in sensible heat and net shortwave radiation that are generally associated with warm summers.
Journal
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- Journal of the Japanese Society of Snow and Ice
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Journal of the Japanese Society of Snow and Ice 83 (2), 143-154, 2021
The Japanese Society of Snow and Ice
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Details 詳細情報について
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- CRID
- 1390008067433001728
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- NII Article ID
- 130008093504
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- NII Book ID
- AN00131221
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- ISSN
- 18836267
- 03731006
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- NDL BIB ID
- 031372438
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed