Sciences in Cold and Arid Regions ›› 2019, Vol. 11 ›› Issue (5): 335-339.doi: 10.3724/SP.J.1226.2019.00335.

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Origin and advances in implementing blowing-snow effects in the Community Land Model

ZeYong Hu1,3,ZhiPeng Xie1,2()   

  1. 1. Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions, Northwest Institute of Eco‐Environment and Resources, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China
    2. Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China
    3. CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing 100085, China
  • Received:2019-09-16 Accepted:2019-10-12 Online:2019-10-31 Published:2019-11-19
  • Contact: ZhiPeng Xie


now cover on the Tibetan Plateau (TP) is closely related to regional and continental biological and hydrological processes. The vast snow cover, special climatic conditions, and sparse vegetative cover over the TP facilitate the occurrence of blowing snow, leading to substantial heterogeneities in the snow cover and great promotion in the moisture supply from the land surface to the overlying atmospheric boundary layer. However, blowing-snow processes are significantly misrepresented or even neglected in current models, which causes considerable uncertainties of numerical model simulations and leads to erroneous estimates of snow-related processes in mountainous terrain. We present in this paper a brief review of our work in the past 5 years to serve as a basis for further development and improvement of the land-surface model. These studies can be divided into three parts: detection of the problems, development of the land-surface model, and application of the coupled model over the TP (the logical framework is presented in Figure 1). The origin and advances in the development of a land-surface model with consideration of blowing-snow effects are described herein; and the importance of blowing-snow processes in the land-surface model, especially over the TP, is highlighted. We expect that the blowing-snow studies over the TP will play a key role in documenting and understanding the land-surface processes (LSPs) and the cryospheric changes over the TP.

Key words: blowing snow, land surface process, community land model, Tibetan Plateau

Figure 1

The logical framework of the studies"

Figure 2

The observed (OBS) and simulated (CLM_CTL and CLM_STV) diurnal variations of surface albedo in winter. CLM_CTL denotes the control simulation, and CLM_STV denotes the sensitive simulation with adjusted precipitation"

Figure 3

Schematic diagram of the coupled model. Fsup and Fsalt indicate the suspended snow mass and saltated snow mass, respectively. E and EB indicate the surface-snow sublimation and blowing-snow sublimation, respectively. The colors red and blue indicate the snow mass in and out of a grid cell, respectively. The externally computed wind field used in this study is from ERA-Interim reanalysis dataset. This figure is adapted from the Alpine 3D documentation ("

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