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Environmental Earth Sciences

, Volume 74, Issue 6, pp 4745–4750 | Cite as

Quantifying the parameters that control turbulent land–atmosphere energy exchange over the Dunhuang Gobi land surface, northwest China

  • Chao Wang
  • Zhigang Wei
  • Zhenchao Li
  • Tiangui Xiao
Original Article
  • 116 Downloads

Abstract

Land–atmosphere interactions in the northwest arid and semi-arid areas of China are important because of their influence on energy exchange at both regional and global scales. In this paper, regular meteorological observations, as well as flux eddy covariance methods, are used to measure land–atmosphere energy exchange. Experiments were conducted over the Dunhuang Gobi, a typical arid region of northwest China, during the summer of 2008. Surface fluxes were measured directly using an eddy-correlation system, while the vertical gradients of wind and temperature were also observed at four levels using a meteorological tower. Based on the observation data, the integral mean of surface albedo over the Gobi was found to be 0.238. In addition, the mean values of momentum, heat roughness lengths, and soil thermal conductivity were, 0.045, 0.005 cm, 0.199 and 0.201 W (m K)−1, respectively. The Monin–Obukhov similarity functions for momentum and heat were analyzed and new empirical formulae were developed.

Keywords

Albedo Roughness Similarity functions Gobi 

Notes

Acknowledgments

This research was supported by the National Natural Science Foundation of China (41275011, 41375001, 91337215), the Scientific Research Foundation of CUIT (KYTZ201324), and China Special Fund for Meteorological Research in the Public Interest GYHY201406015).

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Chao Wang
    • 1
  • Zhigang Wei
    • 2
  • Zhenchao Li
    • 3
  • Tiangui Xiao
    • 1
  1. 1.Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, College of Atmospheric SciencesChengdu University of Information TechnologyChengduChina
  2. 2.State Key Laboratory of Earth Surface Processes and Resource EcologyBeijing Normal UniversityBeijingChina
  3. 3.Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of SciencesLanzhouChina

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