Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s11430-014-4914-4 |
Numerical simulation and data assimilation of the water-energy cycle over semiarid northeastern China | |
Wen XiaoHang1; Liao XiaoHan2; Yuan WenPing1; Yan XiaoDong1; Wei ZhiGang1; Liu HuiZhi3; Feng JinMing3; Lu ShiHua4; Dong WenJie1 | |
通讯作者 | Wen XiaoHang |
来源期刊 | SCIENCE CHINA-EARTH SCIENCES
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ISSN | 1674-7313 |
EISSN | 1869-1897 |
出版年 | 2014 |
卷号 | 57期号:10页码:2340-2356 |
英文摘要 | The default fractional vegetation cover and terrain height were replaced by the estimated fractional vegetation cover, which was calculated by the Normalized Difference Vegetation Index (NDVI) of Earth Observing System Moderate-Resolution Imaging Spectroradiometer (EOS-MODIS) and the Digital Elevation Model of the Shuttle Radar Topography Mission (SRTM) system. The near-surface meteorological elements over northeastern China were assimilated into the three-dimensional variational data assimilation system (3DVar) module in the Weather Research and Forecasting (WRF) model. The structure and daily variations of air temperature, humidity, wind and energy fields over northeastern China were simulated using the WRF model. Four groups of numerical experiments were performed, and the simulation results were analyzed of latent heat flux, sensible heat flux, and their relationships with changes in the surface energy flux due to soil moisture and precipitation over different surfaces. The simulations were compared with observations of the stations Tongyu, Naiman, Jinzhou, and Miyun from June to August, 2009. The results showed that the WRF model achieves high-quality simulations of the diurnal characteristics of the surface layer temperature, wind direction, net radiation, sensible heat flux, and latent heat flux over semiarid northeastern China in the summer. The simulated near-surface temperature, relative humidity, and wind speed were improved in the data assimilation case (Case 2) compared with control case (Case 1). The simulated sensible heat fluxes and surface heat fluxes were improved by the land surface parameterization case (Case 3) and the combined case (Case 4). The simulated temporal variations in soil moisture over the northeastern arid areas agree well with observations in Case 4, but the simulated precipitation should be improved in the WRF model. This study could improve the land surface parameters by utilizing remote sensing data and could further improve atmospheric elements with a data assimilation system. This work provides an effective attempt at combining multi-source data with different spatial and temporal scales into numerical simulations. The assimilation datasets generated by this work can be applied to research on climate change and environmental monitoring of arid lands, as well as research on the formation and stability of climate over semiarid areas. |
英文关键词 | WRF model data assimilation water-energy cycle semiarid northeastern China |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000343363600007 |
WOS关键词 | SURFACE-HYDROLOGY MODEL ; ZONE SOIL-MOISTURE ; PART I ; SYSTEM ; WRF ; MM5 ; IMPLEMENTATION ; TEMPERATURE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
来源机构 | 中国科学院西北生态环境资源研究院 ; 北京师范大学 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/184849 |
作者单位 | 1.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China; 2.Natl Remote Sensing Ctr China, Beijing 100036, Peoples R China; 3.Chinese Acad Sci, Key Lab Reg Climate Environm Res Temperate East A, Beijing 100029, Peoples R China; 4.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou 730000, Peoples R China |
推荐引用方式 GB/T 7714 | Wen XiaoHang,Liao XiaoHan,Yuan WenPing,et al. Numerical simulation and data assimilation of the water-energy cycle over semiarid northeastern China[J]. 中国科学院西北生态环境资源研究院, 北京师范大学,2014,57(10):2340-2356. |
APA | Wen XiaoHang.,Liao XiaoHan.,Yuan WenPing.,Yan XiaoDong.,Wei ZhiGang.,...&Dong WenJie.(2014).Numerical simulation and data assimilation of the water-energy cycle over semiarid northeastern China.SCIENCE CHINA-EARTH SCIENCES,57(10),2340-2356. |
MLA | Wen XiaoHang,et al."Numerical simulation and data assimilation of the water-energy cycle over semiarid northeastern China".SCIENCE CHINA-EARTH SCIENCES 57.10(2014):2340-2356. |
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