气候变化领域集成服务门户(CCPortal): Understanding the mass; momentum; and energy transfer in the frozen soil with three levels of model complexities

CCPortal

DOI	10.5194/hess-24-4813-2020
	Understanding the mass; momentum; and energy transfer in the frozen soil with three levels of model complexities
	Yu L.; Zeng Y.; Su Z.
发表日期	2020
ISSN	1027-5606
起始页码	4813
结束页码	4830
卷号	24 期号:10
英文摘要	Frozen ground covers a vast area of the Earth’s surface and it has important ecohydrological implications for cold regions under changing climate. However, it is challenging to characterize the simultaneous transfer of mass and energy in frozen soils. Within the modeling framework of Simultaneous Transfer of Mass, Momentum, and Energy in Unsaturated Soil (STEMMUS), the complexity of the soil heat and mass transfer model varies from the basic coupled model (termed BCM) to the advanced coupled heat and mass transfer model (ACM), and, furthermore, to the explicit consideration of airflow (ACM–AIR). The impact of different model complexities on understanding the mass, momentum, and energy transfer in frozen soil was investigated. The model performance in simulating water and heat transfer and surface latent heat flux was evaluated over a typical Tibetan plateau meadow site. Results indicate that the ACM considerably improved the simulation of soil moisture, temperature, and latent heat flux. The analysis of the heat budget reveals that the improvement of soil temperature simulations by ACM is attributed to its physical consideration of vapor flow and the thermal effect on water flow, with the former mainly functioning above the evaporative front and the latter dominating below the evaporative front. The contribution of airflow-induced water and heat transport (driven by the air pressure gradient) to the total mass and energy fluxes is negligible. Nevertheless, given the explicit consideration of airflow, vapor flow and its effects on heat transfer were enhanced during the freezing–thawing transition period. © Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License.
语种	英语
scopus关键词	Earth (planet); Energy transfer; Flow of water; Frozen soils; Heat flux; Latent heat; Mass transfer; Momentum; Soil moisture; Changing climate; Coupled heat and mass transfer; Heat and mass transfer models; Model complexity; Model performance; Simultaneous transfer; Surface latent heat fluxes; Transition period; Heat transfer performance; atmospheric pressure; climate change; complexity; frozen ground; ground cover; heat budget; heat transfer; latent heat flux; meadow; model; soil temperature
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159288
作者单位	Yu, L., Faculty of Geo-information Science and Earth Observation (ITC), University of Twente, Enschede, Netherlands; Zeng, Y., Faculty of Geo-information Science and Earth Observation (ITC), University of Twente, Enschede, Netherlands; Su, Z., Faculty of Geo-information Science and Earth Observation (ITC), University of Twente, Enschede, Netherlands, Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, School of Water and Environment, Chang’an University, Xi’an, China
推荐引用方式 GB/T 7714	Yu L.,Zeng Y.,Su Z.. Understanding the mass; momentum; and energy transfer in the frozen soil with three levels of model complexities[J],2020,24(10).
APA	Yu L.,Zeng Y.,&Su Z..(2020).Understanding the mass; momentum; and energy transfer in the frozen soil with three levels of model complexities.Hydrology and Earth System Sciences,24(10).
MLA	Yu L.,et al."Understanding the mass; momentum; and energy transfer in the frozen soil with three levels of model complexities".Hydrology and Earth System Sciences 24.10(2020).