Friday, July 9, 2010

Day 12 - Adding Mass Balance


All 40 years of simulated and measured data yay!


Today after simulating all 40 years of data using model 1 (woohoo!) I worked on getting mass balance output. The USGS measured mass balance data is pretty messy and hard to work with, but it will do for now just starting. After plotting the mass balance data (measured vs simulated) it looks really bad so there is something wrong either with the data or the model. Hopefully I will figure that out.

There are three mass balance components that the model works with; winter, summer, and net. Winter mass balance measured the change in mass balance during the winter, summer mass balance measures the change during the summer, and the net is the winter minus the summer or the total mass balance for the year. Snow accumlates during the winter so mass balance is positive and melts in the summer so mass balance is negative and the net measures whether more snow accumlated or melted during the year.

Mass balance combined with disharge gives a pretty good idea about how the glacier is melting and fitting the model to both mass balance and discharge ensures that the model is appropriately and accurately modeling the glacier dynamics.


PLAN:
refine mass balance
more matlab!
calibrate model 1 and 2

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