气候变化领域集成服务门户(CCPortal): Improving Ground Heat Flux Estimation: Considering the Effect of Freeze/Thaw Process on the Seasonally Frozen Ground

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DOI	10.1029/2021JD035445
	Improving Ground Heat Flux Estimation: Considering the Effect of Freeze/Thaw Process on the Seasonally Frozen Ground
	Wang, Jingyuan; Luo, Siqiong; Lv, Zhibang; Li, Wenjing; Tan, Xiaoqing; Dong, Qingxue; Chen, Zihang
通讯作者	Luo, SQ (通讯作者)，Chinese Acad Sci, Key Lab Land Surface Proc & Climate Change Cold &, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China.
发表日期	2021
ISSN	2169-897X
EISSN	2169-8996
卷号	126 期号:24
英文摘要	An inadequate understanding of the changes in water and heat of the soil is likely a potential reason for the nonclosure of the surface energy balance. During the freeze/thaw period, the large volumetric heat capacity of ice and the latent heat of soil ice phase change had a specific influence on the estimation of ground heat flux (G(0)). However, the effects of the freeze/thaw process on G(0) estimation were not well quantified using field observations. The improvements of G(0) estimation by adding the soil ice heat storage (Delta s(ice)) and the latent heat of soil ice phase change (Delta s(LH)) were evaluated during the freeze/thaw period at two sites (Madoi and Maqu) on the eastern Tibetan Plateau. During the freeze/thaw period, both Delta s(ice) and Delta s(LH) had important influences on the reasonable determination of G(0). Adding Delta s(LH) increased G(0) at the daytime peak by 34.4 W/m(2) (Madoi) and 9.3 W/m(2) (Maqu). During the completely frozen stage, the contributions of Delta s(ice) to G(0 ice + LH) (adding both Delta s(ice) and Delta s(LH)) were higher than those during other freeze/thaw stages at both sites, and Delta s(LH) also made a significant contribution to G(0 ice + LH). Therefore, the daily freeze/thaw cycles cannot be ignored during the completely frozen stage in the estimation of G(0). The G(0 ice + LH) approach improved the G(0) estimation more than G(0 ice) (adding Delta s(ice)) approach during the freezing and thawing stages. The improvements of G(0) estimations increased the energy closure status and reduced the daily average of imbalance.
关键词	SURFACE-ENERGY BUDGET SONIC ANEMOMETER WATER-VAPOR SOIL PERMAFROST REGION SIMULATIONS EVAPORATION EXCHANGE IMPACTS
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000735878700019
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254105
作者单位	[Wang, Jingyuan; Luo, Siqiong; Li, Wenjing; Tan, Xiaoqing; Chen, Zihang] Chinese Acad Sci, Key Lab Land Surface Proc & Climate Change Cold &, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China; [Wang, Jingyuan; Li, Wenjing; Tan, Xiaoqing; Chen, Zihang] Univ Chinese Acad Sci, Beijing, Peoples R China; [Lv, Zhibang] Univ Saskatchewan, Ctr Hydrol, Saskatoon, SK, Canada; [Dong, Qingxue] Chengdu Univ Informat Technol, Plateau Atmosphere & Environm Key Lab Sichuan Pro, Sch Atmospher Sci, Chengdu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Jingyuan,Luo, Siqiong,Lv, Zhibang,et al. Improving Ground Heat Flux Estimation: Considering the Effect of Freeze/Thaw Process on the Seasonally Frozen Ground[J]. 中国科学院西北生态环境资源研究院,2021,126(24).
APA	Wang, Jingyuan.,Luo, Siqiong.,Lv, Zhibang.,Li, Wenjing.,Tan, Xiaoqing.,...&Chen, Zihang.(2021).Improving Ground Heat Flux Estimation: Considering the Effect of Freeze/Thaw Process on the Seasonally Frozen Ground.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,126(24).
MLA	Wang, Jingyuan,et al."Improving Ground Heat Flux Estimation: Considering the Effect of Freeze/Thaw Process on the Seasonally Frozen Ground".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 126.24(2021).