python-data/exercises/ex02b_xr_aggregation.ipynb

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    "# Exercise 2b: Arithmetic and Aggregation"
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   "source": [
    "## Aim: Learn to do computation with xarray"
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    "Find the teaching materials here: https://tutorial.xarray.dev/fundamentals/03.1_computation_with_xarray.html"
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    "### Issues covered: \n",
    "- Doing arithmetic on data arrays\n",
    "- Using `.mean()`, `.std()`, `.max()` and `.min()`"
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   "source": [
    "Q1. Import the `'../data/xbhubo.pgc0apr.nc'` dataset and create the temperature data array as in the last lesson."
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    "Q2. Let's compare the data between the sea surface and further down. Create two temperature datasets and extract the temperature change data the sea surface and the sea bottom"
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    "Q3. Calculate the difference in temperature the bottom of the ocean and the surface."
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    "Q4. Plot the difference in these temperatures using xarrays built-in features."
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    "Q5. Calculate the **minimum** temperature across the water depth in all locations."
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    "Q6. Compute the global average ocean temperature change (averaged over all depths) for the entire time period in the dataset. Then display the result as a 2D depth profile."
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    "Q7. Calculate the zonal average temperature change for each latitude. Plot the result as a 2d contour with depth on the y axis and latitude on x."
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