Temporal Variability in Water Availability. Or, sometimes it rains, sometimes it pours…sometimes it doesn’t.

This post is really just an excuse to share a pretty cool animation. But first some background.

I’m currently reading “Water Resources” by Shimon C. Anisfield. It’s been a fascinating and enlightening read so far. In the chapter titled “Water Availability and Water Use” he makes the point that some regions get a fairly constant amount of rainfall over the course of a year (e.g. northeastern US), while other regions have very distinct wet and dry seasons (e.g. India). The reference used to illustrate this point is very cool: global-scale animation of monthly rainfall from 1979 to 1999.

This seasonal variability means that water has to be stored somehow and this is a very big challenge for modern-day water managers and has always been a huge challenge for civilizations over the millennia. In upcoming weeks we’ll discuss how some of the methods used to manage this problem have created even bigger ones.

Stay engaged.

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About MKD

I am on a mission to contribute to one of the most important issues of our time: increasing Water Literacy everywhere.
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4 Responses to Temporal Variability in Water Availability. Or, sometimes it rains, sometimes it pours…sometimes it doesn’t.

  1. Karan says:

    Now that is so fascinating. Does all the red yellows that blue eventually became in the animation means the reduction of water supply?
    If it is – how awful – how frightening!
    The only saving grace – is the mercy of God and we have that.

    • The changes colors show seasonal and inter-annual fluctuations rather than overall reduction. I think the main takeaway is that we have to continue to figure out ways to store water effectively when there is a lot of rain so that we can cope during the drier seasons and years. It’s basically a global depiction of the problems we experienced first hand in St. Lucia: rainy season-no water because the infrastructure was overwhelmed; dry season – no water because there was no rain.

      • Karan says:

        Now that’s a relief. And it’s something that always bothered me – this no water whatever – I keep thinking – there must be some way to hold on the the dregs that pour down endlessly during the rainy season – instead of singing to the tunes they bring to mind…
        But I’ll leave that to the more qualified …

    • Ladainian says:

      Wonderful explanation of facts available here.

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