Vol.18, NO.2, 2007
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Liu Shaomin, Lu Li, Mao Defa, et al. Measurements of the aerodynamic resistance. J Appl Meteor Sci, 2007, 18(2): 247-250.
Citation: Liu Shaomin, Lu Li, Mao Defa, et al. Measurements of the aerodynamic resistance. J Appl Meteor Sci, 2007, 18(2): 247-250.
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Measurements of the Aerodynamic Resistance

  • 1.

    State Key Laboratory of Remote Sensing Science, School of Geography, Beijing Normal University, Beijing 100875

  • 2.

    Beijing Water Technology Center, Beijing 100073

  • Received Date: 2005-08-24
  • Rev Recd Date: 2006-10-16
  • Publish Date: 2007-04-30
    Abstract
  • Measurements both from eddy correlation system and evaporation pan are used to derive aerodynamic resistance over bare soil surface as well as maize field. Diurnal variations of aerodynamic resistance are also analyzed. A comparison is made between the aerodynamic resistances derived from the two observation methods. Results show that the diurnal variation of aerodynamic resistance during daytime is obvious for both bare soil surface and maize field although the variation range is limited (0—200 s/m). Aerodynamic resistance derived from measurements by evaporation pan is normally smaller than that by eddy correlation system.
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  • Fig. 1  Diurnal variation of the aerodynamic resistances measured by the evaporation pan and eddy correlation system (a) bare soil surface, June 6, 2004, (b) bare soil surface, June 8, 2004, (c) maize field, June 15, 2004, (d) maize field, June 26, 2004

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    Fig. 2  Comparison between the aerodynamic resistances derived from measurements by the evaporation pan (rav) and by the eddy correlation system (rah)

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    Fig. 3  Comparison between the sensible heat flux calculated by the evaporation pan (Hrav) and measured from the eddy correlation system (Hobs)

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    Table  1  Measurements together with instruments relevant
  • [1]
    Monteith J L.Evaporation and surface temperature.Quarterly Journal of the Royal Meteorological Society, 1981, 107:1-27. doi:  10.1002/qj.v107:451
    [2]
    Zhu Zilin, Sun Xiaomin, Zhang Renhua, et al.A note on alternatively direct measurement of the transfer resistance over vegetation.J Atmos Ocean Technol, 2002, 19(6):1886-1890. https://www.researchgate.net/publication/235221180_A_Note_on_Alternatively_Direct_Measurement_of_the_Transfer_Resistance_over_Vegetation
    [3]
    Nichols W D.Energy budgets and resistances to energy transport in sparsely vegetated rangeland.Agriculture and Forest Meteorology, 1992, 60:221-247. doi:  10.1016/0168-1923(92)90039-7
    [4]
    Xu Jinping, Sun Xiaomin, Zhang Renhua.Measuring of Thermal Radiation Multi-reflection Information in Soil-vegetation System.Proceedings of IEEE 2004 International Geoscience and Remote Sensing Symposium (IGARSS04), Anchorage, Alaska, US, 20-24 September, 2004.
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    • Received : 2005-08-24
    • Accepted : 2006-10-16
    • Published : 2007-04-30
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