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Earth science, surface energy balance

  1. Oct 17, 2006 #1
    Given the equation Q* = QH + QE + QG and the corresponding data (all fluxes in [W/m²]). How can I find the equivalent loss of stored soil liquid water expressed in [mm] (Note: the conversion factor is the density of liquid water, i.e. 1000 kg/m^3)

    Thanks very much for your help!!!:confused:
     
  2. jcsd
  3. Oct 17, 2006 #2

    siddharth

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    First of all, what do you mean by QH, QE, QG? Can you tell us what the terms mean in your equation?

    Also, you need to give the question in it's full context.
     
  4. Oct 18, 2006 #3
    i'm sorry, the question is about surface energy balance. Given Q* = QH + QE + QG, QH = sensible heat flux, QE = latent heat flux and QG = ground heat flux. (All fluxes in [W/m²]) and the table below, i've to calculate the 24 hour totals equivalent loss of stored soil liquid water expressed in [mm] (note: the conversion factor is the density of liquid water, i.e. 1000 kg/m^3)
    Table 1: Daily cycle in hourly-averaged energy balance components over grassland in Alberta.
    1 July 2003. (All fluxes in W m¡2; data courtesy of Dr. L. Flanagan; file flanagan.txt)End time [MDT]
    hr Q¤ QG QH QE
    1 -77 -17 -117 23
    2 -68 -17 -67 11
    3 -38 -25 2 -2
    4 -37 -29 2 -2
    5 -31 -27 -5 -1
    6 34 -19 -26 2
    7 134 -4 3 72
    8 262 13 42 136
    9 312 28 60 212
    10 438 31 99 272
    11 518 45 162 315
    12 632 65 213 316
    13 633 68 208 339
    14 595 61 200 347
    15 563 54 167 337
    16 347 34 73 278
    17 311 28 53 230
    18 209 13 -35 139
    19 81 1 -52 111
    20 -15 -5 -44 55
    21 -62 -11 -103 23
    22 -63 -14 -106 17
    23 -62 -14 -77 12
    0 -66 -15 -101 19
     
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