| Evaluation of Noah Frozen Soil Parameterization for Application to a Tibetan Meadow Ecosystem | |
| Zheng, Donghai1; van der Velde, Rogier1; Su, Zhongbo1; Wen, Jun2; Wang, Xin2; Yang, Kun3 | |
| 刊名 | JOURNAL OF HYDROMETEOROLOGY
 |
| 2017-06-01 | |
| 卷号 | 18期号:6页码:1749-1763 |
| ISSN号 | 1525-755X |
| DOI | 10.1175/JHM-D-16-0199.1 |
| 通讯作者 | Zheng, Donghai(d.zheng@utwente.nl) |
| 英文摘要 | This study evaluates the Noah land surface model (LSM) in its ability to simulate water and heat exchanges over frozen ground in a Tibetan meadow ecosystem. A comprehensive dataset including in situ micrometeorological and soil moisture-temperature profile measurements collected between November and March is utilized, and analyses of the measurements reveal that the measured soil freezing characteristics are better captured by 1) modifying the parameter b(l) implemented in the current Noah LSM that constrains the shape parameter of soil water retention curve utilized by the water potential freezing point depression equation to produce appropriate liquid water content theta(liq) under subzero temperature conditions and 2) neglecting the ice effect on soil-specific surface and thus matric potential via setting the empirical parameter that accounts for the effect of increase in specific surface of soil particles and ice-liquid water c(k) to zero. The numerical experiments performed with the Noah model run show that in comparison to the default Noah LSM, adoption of ck 5 0 and site-specific bl values reduces the overestimation of theta(liq) across the soil profile. Implementation of augmentations such as the parameterization of diurnally varying thermal roughness length resolves the overestimation of daytime turbulent heat fluxes and underestimation of surface temperature. Further adoption of a new heat conductivity parameterization reduces the overestimation of nighttime surface temperature. An appropriate treatment of phase change efficiency that accounts for changing freezing rate with varying liquid water contents is also needed to reduce the temperature underestimation across soil profiles. |
| 收录类别 | SCI |
| WOS关键词 | LAND-SURFACE MODEL ; HYDRAULIC-PROPERTIES ; SIMULTANEOUS HEAT ; ARID REGIONS ; COLD REGION ; WATER-FLOW ; PLATEAU ; TEMPERATURE ; PERMAFROST ; VALIDATION |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | AMER METEOROLOGICAL SOC |
| WOS记录号 | WOS:000405926400013 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2557716 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zheng, Donghai |
| 作者单位 | 1.Univ Twente, Fac Geoinformat Sci & Earth Observat, Enschede, Netherlands 2.Chinese Acad Sci, Key Lab Land Surface Proc & Climate Change Cold &, Northwest Inst Ecoenvironm & Resources, Lanzhou, Gansu, Peoples R China 3.Tsinghua Univ, Dept Earth Syst Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Donghai,van der Velde, Rogier,Su, Zhongbo,et al. Evaluation of Noah Frozen Soil Parameterization for Application to a Tibetan Meadow Ecosystem[J]. JOURNAL OF HYDROMETEOROLOGY,2017,18(6):1749-1763. |
| APA | Zheng, Donghai,van der Velde, Rogier,Su, Zhongbo,Wen, Jun,Wang, Xin,&Yang, Kun.(2017).Evaluation of Noah Frozen Soil Parameterization for Application to a Tibetan Meadow Ecosystem.JOURNAL OF HYDROMETEOROLOGY,18(6),1749-1763. |
| MLA | Zheng, Donghai,et al."Evaluation of Noah Frozen Soil Parameterization for Application to a Tibetan Meadow Ecosystem".JOURNAL OF HYDROMETEOROLOGY 18.6(2017):1749-1763. |
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