Simulation on Wind Characteristics in Extremely High Atmospheric Boundary Layer over Northwest China

Abstract:

Extremely high atmospheric boundary layer is observed during 29 May to 3 June 2000 over Dunhuang in Northwest China. Average height of the atmospheric boundary layer is more than 3500m during the observation. Environmental conditions such as wind related to the extremely high atmospheric boundary layer are analysed combined with numerical simulation. Of the first three days in the observation there are low-level jets and large wind shear near surface observed on 29 and 31 May. Wind speed variation in these three days agrees well with variation of the atmospheric boundary layer heights. WRF model is applied to simulate atmospheric boundary layer height and investigate wind characteristics. The model simulation ability is checked and the simulation results find a significant west jet exists over northern Dunhuang. The momentum from the jet transfers downward to Dunhuang to supply kinetic energy developing atmospheric boundary layer. At last two sensitive experiments are performed to study wind effect on the height. The sensitive experiments demonstrate that wind as a lateral boundary parameter heavily influences the atmospheric boundary layer development.

• Periodical: Advanced Materials Research (Volumes 807-809)
• Pages: 106-112
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.807-809.106
• Online since: September 2013
• Authors: Min Jin Ma
• Keywords: Atmospheric Boundary Layer Height, Numerical Simulation, Wind Characteristics

References

[1] Stull, R.: An introduction to boundary layer meteorology. Kluwer Academic. Dordrecht, Boston, London (1988), p.666.

[2] Lin, C. S., Moulton R. W., et al.: Industrial & Engineering Chemistry, Vol. 45, No. 3 (1953), pp.636-640.

[3] HoGSTRoM, U.: Boundary-Layer Meteorology, Vol. 78 (1996), pp.215-246.

[4] Sutton, O. G.: Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, Vol. 135, No. 826 (1932), pp.143-165.

[5] Coulter, R. L.: Journal of Applied Meteorology, Vol. 18, No. 11 (1979), pp.1495-1499.

[6] Deardorff, J. W.: Boundary-Layer Meteorology, Vol. 7, No. 1 (1974), pp.81-106.

[7] Q. Zhang, G. Wei, et al.: SCIENCE IN CHINA (Series D), Vol. 45, No. 5 (2002), pp.468-480. In Chinese.

[8] Q. Zhang: Journal of Desert Research, Vol. 27 (2007), pp.614-620. In Chinese.

[9] Q. Zhang, and S. Wang: Acta Meteorologica Sinica, No. 03 (2009), pp.327-337. In Chinese.

[10] Heffter, J.: Transport layer depth calculations, Proceedings of the 2nd joint conference on applications of air pollution modelling, American Meteorological Society, pp.787-791.

[11] Marsik, F., Fischer, K., et al.: Journal of Applied Meteorology Vol. 34 (1995), p.1802–1814.

[12] Seibert, P., Beyrich, F., et al.: Atmospheric Environment, Vol. 34, No. 7 (2000), pp.1001-1027.

[13] Skamarock, W., Klemp, J., et al.: A description of the advanced research WRF version 3. NCAR Technical note NCAR/TN-475+STR, (2008) pp.1-113.