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geojon
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If mean seawater temperatures are 20C in August and 3C in February, for a patch of water with a depth of 10 meters, what is the net heat flux (in W m^-2) to the atmosphere from August to February?
Bystander said:Looks like homework to me; what have you done so far with it?
Why are you shooting for partial credit? I think you have enough information to answer the question as stated in #3...geojon said:So, at this point I am shooting for partial credit.
I have been working from the bulk equations. They exist for Q, Qs and QL.Bystander said:The water column has cooled by 17 degrees over a time period of six months. How much heat has been lost from the water column? Sorry I didn't catch on earlier that you were using "Q = zero" for a "steady state" condition (no change in temperature of the water column) rather than Q = del T x CP/(6 mo.).
delQ = delT / [(density of seawater) * (height of water column)] = 17C / [(1,030 kg/m3 * 10 meters)] = 0.00165 (units here are difficult to figure out).olivermsun said:Why are you shooting for partial credit? I think you have enough information to answer the question as stated in #3...
geojon said:delQ = delT / [(density of seawater) * (height of water column)] = 17C / [(1,030 kg/m3 * 10 meters)] = 0.00165 (units here are difficult to figure out).
Q = delT * CP / 6 months = 17C * 1.01 J/gC = 17.17 J/g in 6 months.
These (above) are not bulk equations, but was given to me by a classmate to use. The latter (when looking at the value you get) seems really only to say how much the water changed in temperature over 6 months, as the number is very close to 17.
Heat flux is the rate of heat transfer per unit area. It is a measure of how much heat is moving through a given area in a certain amount of time.
Heat flux is calculated using the formula q = -k * (∆T/∆x), where q is the heat flux, k is the thermal conductivity of the material, ∆T is the temperature difference, and ∆x is the distance over which the heat is being transferred.
Calculating heat flux from August to February provides information on the seasonal variation in heat transfer. This is important in understanding the energy balance in a given region and can be used to predict future climate patterns.
The factors that affect heat flux include the thermal conductivity of the material, the temperature difference across the material, the distance over which the heat is being transferred, and the presence of any insulating materials.
Heat flux calculations are used in a variety of practical applications, such as designing energy-efficient buildings, predicting crop growth and yield, and understanding the effects of climate change. They are also used in industries such as aerospace and automotive to design and optimize thermal management systems.