Instruction

Use the CPAS online platform to simulate the general circulation over continents and oceans in winter and summer (Figure 11.31 of Practical Meteorology). Suppose your region of interest is only the Northern Hemisphere, then you do not need to analyse the result for the Southern Hemisphere. A 1.5-day simulation is enough. Write a report by using the report template provided. You may continue with the winter real simulation in the assignment in Week 2, or make additional trials. Use the result of the last timestep of your simulation (say if your simulation starts from 2023-01-01 00Z and it is a 1.5-day simulation, show us your simulation result at 2023-01-02 12Z) and make plottings of Mean Sea Level Pressure (MSLP) contour and surface wind field (at 10 meter above ground level). Make the summer counterpart after you succeed in the winter case.

Optional: Conduct a simulation for a weather phenomenon interesting to you. Share your results.

Report Template

Mesh design

Describe and justify your design of mesh to use. You may use captures of your mesh customization screen.

Visualize the resulting mesh, put a figure showing it in a global zoom level here.

Find a cell that is not hexagonal. Control the zoom level that shows the non-hexagonal cell and its neighboring cells clearly. Put a figure here.

Show the computational cost for simulating 24 hours. 

Simulation of general circulation in Northern Hemisphere winter

What initial condition data did you use? What is the datetime of the initial condition?

How long is the execution time of your run?

Show a plot of MSLP contours with at least a continent of your choice and its surrounding ocean. 

What is the highest MSLP and lowest MSLP shown by the contours? Where are they located?

Show a vector field plot of surface wind field (at 10 meter above ground level) corresponding to the MSLP plot.

Describe what you can see from the plots. Are they consistent with what you have learnt from the General Circulation chapter of Stull’s textbook?

Simulation of general circulation in Northern Hemisphere summer

What initial condition data did you use? What is the datetime of the initial condition?

Show a plot of MSLP contours with at least a continent of your choice and its surrounding ocean. 

What is the highest MSLP and lowest MSLP shown by the contours? Where are they located?

Show a vector field plot of surface wind field (at 10 meter above ground level) corresponding to the MSLP plot.

Describe what you can see from the plots, and give analysis of anything you noticed. 

(Optional) Simulation of weather phenomenon of your interest

You are free to share any simulation result here.