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Homework Help: Earth Science problem

  1. Oct 4, 2006 #1
    I've no idea how to start this question, please take a look.
    I just pick some of the data from the table.
    Thanks very much.

    Daily cycle in the surface energy balance
    The surface energy balance states that
    Q¤ = QH + QE + QG
    where QH is sensible heat, QE is latent heat and QG is ground heat flux.
    I'm required to
    a) give a brief interpretation1
    b) compute these 24 hour totals2
    – transfer of sensible heat to the atmosphere in [Jm¡2]
    – transfer of latent heat to the atmosphere in [Jm¡2]
    – transfer of water to the atmosphere expressed in [kgm¡2]
    – equivalent loss of stored soil liquid water expressed in [mmm¡2] (note: the conversion factor is the density of liquid water, i.e. 1000 kgm¡3)

    Table: Daily cycle in hourly-averaged energy balance components over grassland in Alberta. 1 July 2003. (All fluxes in W m¡2)
    hour Q¤ QG QH QE
    1 -77 -17 -117 23
    2 -68 -17 -67 11
    . . . . .
    . . . . .
    24 -66 -15 -101 19
    Last edited: Oct 4, 2006
  2. jcsd
  3. Oct 4, 2006 #2


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    Gold Member

    Step one is to communicate the meanings of "G, H, E" which are presumably subscripts of Q --- saves people "guessing" notations. Step two is take a stab at "part b;" once you've got "b" in hand, "a" is trivial. Dunno why they asked things in the backward order, but that's what's left you with "no idea."
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