气候变化领域集成服务门户(CCPortal): NHM-SMAP: Spatially and temporally high-resolution nonhydrostatic atmospheric model coupled with detailed snow process model for Greenland Ice Sheet

CCPortal

DOI	10.5194/tc-12-635-2018
	NHM-SMAP: Spatially and temporally high-resolution nonhydrostatic atmospheric model coupled with detailed snow process model for Greenland Ice Sheet
	Niwano M.; Aoki T.; Hashimoto A.; Matoba S.; Yamaguchi S.; Tanikawa T.; Fujita K.; Tsushima A.; Iizuka Y.; Shimada R.; Hori M.
发表日期	2018
ISSN	19940416
卷号	12 期号:2
英文摘要	To improve surface mass balance (SMB) estimates for the Greenland Ice Sheet (GrIS), we developed a 5ĝ€̄km resolution regional climate model combining the Japan Meteorological Agency Non-Hydrostatic atmospheric Model and the Snow Metamorphism and Albedo Process model (NHM-SMAP) with an output interval of 1ĝ€̄h, forced by the Japanese 55-year reanalysis (JRA-55). We used in situ data to evaluate NHM-SMAP in the GrIS during the 2011-2014 mass balance years. We investigated two options for the lower boundary conditions of the atmosphere: an offline configuration using snow, firn, and ice albedo, surface temperature data from JRA-55, and an online configuration using values from SMAP. The online configuration improved model performance in simulating 2ĝ€̄m air temperature, suggesting that the surface analysis provided by JRA-55 is inadequate for the GrIS and that SMAP results can better simulate physical conditions of snow/firn/ice. It also reproduced the measured features of the GrIS climate, diurnal variations, and even a strong mesoscale wind event. In particular, it successfully reproduced the temporal evolution of the GrIS surface melt area extent as well as the record melt event around 12 July 2012, at which time the simulated melt area extent reached 92.4ĝ€̄%. Sensitivity tests showed that the choice of calculation schemes for vertical water movement in snow and firn has an effect as great as 200ĝ€̄Gtĝ€̄year-1 in the GrIS-wide accumulated SMB estimates; a scheme based on the Richards equation provided the best performance. © Author(s) 2018.
学科领域	air temperature; albedo; atmospheric modeling; boundary condition; climate forcing; hydrostatics; melting; regional climate; sensitivity analysis; spatiotemporal analysis; Arctic; Greenland; Greenland Ice Sheet
语种	英语
scopus关键词	air temperature; albedo; atmospheric modeling; boundary condition; climate forcing; hydrostatics; melting; regional climate; sensitivity analysis; spatiotemporal analysis; Arctic; Greenland; Greenland Ice Sheet
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119214
作者单位	Meteorological Research Institute, Japan Meteorological Agency, Tsukuba, 305-0052, Japan; Graduate School of Natural Science and Technology, Okayama University, Okayama, 700-8530, Japan; Institute of Low Temperature Science, Hokkaido University, Sapporo, 060-0819, Japan; Snow and Ice Research Center, National Research Institute for Earth Science and Disaster Resilience, Nagaoka, 940-0821, Japan; Graduate School of Environmental Studies, Nagoya University, Nagoya, 464-8601, Japan; Research Institute for Humanity and Nature, Kyoto, 603-8047, Japan; Earth Observation Research Center, Japan Aerospace Exploration Agency, Tsukuba, 305-8505, Japan
推荐引用方式 GB/T 7714	Niwano M.,Aoki T.,Hashimoto A.,et al. NHM-SMAP: Spatially and temporally high-resolution nonhydrostatic atmospheric model coupled with detailed snow process model for Greenland Ice Sheet[J],2018,12(2).
APA	Niwano M..,Aoki T..,Hashimoto A..,Matoba S..,Yamaguchi S..,...&Hori M..(2018).NHM-SMAP: Spatially and temporally high-resolution nonhydrostatic atmospheric model coupled with detailed snow process model for Greenland Ice Sheet.Cryosphere,12(2).
MLA	Niwano M.,et al."NHM-SMAP: Spatially and temporally high-resolution nonhydrostatic atmospheric model coupled with detailed snow process model for Greenland Ice Sheet".Cryosphere 12.2(2018).