Investigation of surface mass loss mechanism in the Greenland ice sheet through development of a next generation polar regional climate model and multi-point in-situ measurements
| Project/Area Number |
17K12817
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Japan, Meteorological Research Institute |
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Principal Investigator |
Niwano Masashi 気象庁気象研究所, 気象予報研究部, 主任研究官 (10515026)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | グリーンランド氷床 / 表面質量収支 / 極域気候モデル / NHM-SMAP / 雪氷融解 / 雪氷質量損失 / 温暖化 / 北極 / 氷床表面融解 / 海水準変動 / 雲放射 / GrSMBMIP / 領域気候モデル / 雲 / 雪氷内部水分移動 / 環境変動 / 極域環境監視 / グリーンランド / 質量収支 / 海面水位変動 |
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| Outline of Final Research Achievements |
The current warming trend in the Arctic is more than twice as fast as that for the global average. Due mainly to this, the Greenland ice sheet has experienced drastic melt and snow/ice mass loss since the 2000s. In the present study, we have succeeded in developing the state-of-the-art high-resolution polar non-hydrostatic regional climate model NHM-SMAP. The model was validated from various aspects using in-situ atmosphere/snow measurement data, and demonstrated its effectiveness and reliability (Niwano et al., 2018, The Cryosphere). In addition, we conducted an unique ice sheet traverse field campaign to obtain original in-situ data on the near-surface snow physical conditions for the model validation (Niwano et al., 2018, Seppyo). Using the model, we conducted model sensitivity studies and demonstrated for the first time that the cloud radiative effects did not enhance the surface snow/ice mass loss during 2011-2014 (Niwano et al., 2019, Sci. Rep.).
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| Academic Significance and Societal Importance of the Research Achievements |
グリーンランド氷床では、2000年代初頭から急速な雪氷融解と雪氷質量損失が進行している。そのため世界の研究者がこぞってそのメカニズム理解に関する研究を実施している。ただし、グリーンランドは非常に広大かつアクセスが難しいことから、モデル研究が有効であると考えられている。中でも極域（領域）気候モデルは現在最も信頼性が高いと評価されている。今日、そのような極域気候モデルは世界に4つしか存在しないが、本研究で開発したNHM-SMAPはその１つである。しかも、考慮している物理過程の精緻さは、客観的に見ても他よりも優れている。今後は、このモデルを活用して、北極研究における日本のプレゼンス向上を進める。
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Report
(4 results)
Research Products
(55 results)
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[Journal Article] Impact of observation-based snow albedo parameterization on global ocean simulation results2020
Author(s)
Toyoda, T., T. Aoki, M. Niwano, T. Tanikawa, L. S. Urakawa, H. Tsujino, H. Nakano, K. Sakamoto, N. Hirose, and G. Yamanaka
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Journal Title
Polar Science
Volume: na
Pages: 100521-100521
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Field activities at the SIGMA-A site, northwestern Greenland Ice Sheet, 20172018
Author(s)
Matoba, S., Niwano, M., Tanikawa, T., Iizuka, T., Yamasaki, T., Kurosaki, Y., Aoki, T., Hashimoto, A., Hosaka, M., and Sugiyama, S.
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Journal Title
Bulletin of Glaciological Research
Volume: 36
Issue: 0
Pages: 15-22
DOI
NAID
ISSN
1345-3807, 1884-8044
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] NHM-SMAP: spatially and temporally high-resolution nonhydrostatic atmospheric model coupled with detailed snow process model for Greenland Ice Sheet2018
Author(s)
1.Masashi Niwano, Teruo Aoki, Akihiro Hashimoto, Sumito Matoba, Satoru Yamaguchi, Tomonori Tanikawa, Koji Fujita, Akane Tsushima, Yoshinori Iizuka, Rigen Shimada, and Masahiro Hori
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Journal Title
The Cryosphere
Volume: 12
Issue: 2
Pages: 635-655
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] An Unreported Asian Dust (Kosa) Event in Hokkaido, Japan: A Case Study of 7 March 20162017
Author(s)
Teppei J. Yasunari, Masashi Niwano, Yasushi Fujiyoshi, Atsushi Shimizu,Masamitsu Hayasaki, Teruo Aoki, Arlindo M. da Silva, Brent N. Holben,Sumito Matoba, Naoto Murao, Sadamu Yamagata, and Kyu-Myong Kim
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Journal Title
SOLA
Volume: 13
Issue: 0
Pages: 96-101
DOI
NAID
ISSN
1349-6476
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Presentation] Heat budget of Greenland firn: observed and simulated changes from 1998-20152019
Author(s)
Vandecrux, B., R. Fausto, D. van As, W. Colgan, P. Langen, K. Sampson, K. Steffen, K. Haubner, T. Ingemann-Nielsen, M. Niwano, and J. Box
Organizer
EGU General Assembly 2019
Related Report
Int'l Joint Research
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[Presentation] History of snow grain modification evaluated by specific surface area (SSA) and density using two ice cores from Greenland2019
Author(s)
Ando, T., Y. Iizuka, M. Shibata, S. Matoba, S. Sugiyama, S. Adachi, S. Yamaguchi, K. Fujita, A. Hori, M. Niwano, T. Aoki, and S. Fujita
Organizer
EGU General Assembly 2019
Related Report
Int'l Joint Research
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[Presentation] High resolution polar regional climate model NHM-SMAP for the Greenland Ice Sheet2018
Author(s)
Niwano, M., T. Aoki, A. Hashimoto, S. Matoba, S. Yamaguchi, T. Tanikawa, K. Fujita, A. Tsushima, Y. Iizuka, R. Shimada, and M. Hori
Organizer
2018 AGU Fall Meeting
Related Report
Int'l Joint Research
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[Presentation] Evaluation of the Greenland Ice Sheet surface mass balance estimated by the NHM-SMAP regional climate model2018
Author(s)
Niwano, M., T. Aoki, A. Hashimoto, S. Matoba, S. Yamaguchi, T. Tanikawa, K. Fujita, A. Tsushima, Y. Iizuka, R. Shimada, and M. Hori
Organizer
Fifth International Symposium on the Arctic Research (ISAR-5)
Related Report
Int'l Joint Research
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[Presentation] グリーンランド氷床における極域気候モデルNHM-SMAPの2m気温再現精度2017
Author(s)
庭野匡思, 青木輝夫, 橋本明弘, 的場澄人, 山口 悟, 谷川朋範, 藤田耕史, 對馬あかね, 飯塚芳徳, 島田利元, 堀 雅裕
Organizer
日本気象学会2017年秋季大会
Related Report
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[Presentation] 極域気候モデルNHM-SMAP のグリーンランド氷床における計算精度2017
Author(s)
庭野匡思, 青木輝夫, 橋本明弘, 的場澄人, 山口 悟, 谷川朋範, 藤田耕史, 對馬あかね, 飯塚芳徳, 島田利元, 堀雅裕
Organizer
雪氷研究大会（2017・十日町）
Related Report
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