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Objectives

• Set-up a cylindrical projection over the United States.
• Apply land-sahding on the coastlines.
• Load a grib file containing Mean-Sea level Presssure and visualise it using black isolines.
• Load a grib file containing Precipitation  and visualise it using shading technique.
• Add a legend.
• Add a text.
• Draw the position of New-York City
• Draw a line to materialise the Xsection we are going to visualise in a next tutorial

You will need to download

• The MSL data
• The Precipitation data