With this php script you can run a simple web-based meriodional energybalance model. It can be used to get a first impression of fundamental energy balances and required horizontal energy-transports.

Here you can find documentation of the model and its user inputs

Running the balance model

Below you have to enter your name/user-id and different model parameters. Not entering any value or entering "0" leaves the model with its default parameter. Please use a dot for decimals and avoid comma's.

Enter your usedID or name omitting any spaces Default values
k1: Sensitivity of surface albedo to temperature 0.06 K-1
k2: Sensitivity of turbulent diffusion to global mean temperature 0.010 K-1
k3: Sensitivity of local Ts-Te to Ts, i.e. long wave feedback 0.5
D0: Turbulent diffusion coefficient for meridional heat transport 0.66 W/m²/K
T0: Initial global mean temperature 288.0 K
S0: Present day solar constant 1365 W/m²
S1: Changed solar constant 1365 W/m²
F: Radiative forcing (in addition to direct solar) 0.0 W/m²

Displaying the results (click to enlarge)

Temperature (initial, present day and changed climate)
Graph showing - Temperature (initial, present day and changed climate)
OLR (present day and changed climate)
Graph showing - OLR (present day and changed climate)
Albedo (present day and changed climate)
Graph showing - Albedo (present day and changed climate)
Meridonal heat flux (present day and changed climate)
Graph showing - Meridonal heat flux (present day and changed climate)
Meridonal heat flux convergence
Graph showing - Meridonal heat flux convergence
Temperature (changed climate minus present day)
Graph showing - Temperature (changed climate minus present day)
Time series of global mean temperature
Graph showing - Time series of global mean temperature

Program output

Problems?

Model related problems: Eigil Kaas kaas@gfy.ku.dk

Web related problems: Thomas Jansson tjansson@fys.ku.dk

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