
A couple of months ago, I was thinking about going to Mumbai this summer. Then someone who knows India well, suggested that July and August would not be the best time to go ...on account of the monsoon. So I went to Cornwall and Devon instead and it rained there and then I came back to Dundee and it has deluged for six weeks!
The weather stats for the summer are fascinating and back up what so many people are saying about this summer's weather : that it is not just disappointing but it is also odd. The 'Courier' published this data about July... it was the windiest July since 1974 and it was also twice as wet as usual. Despite that, daily average temperature was actually up! (probably because it remained very cloudy at night).
So what about August? After another day of torrential downpours that remind me of the kind of rain I've experienced in equatorial areas, I've done a bit of research. There is a weather station located near Asda on the Kingsway which I can log into to get weather data and here is what it shows for rainfall for the month so far.....
Each 'step' represents a sudden increase in rain. The graph is cumulative and shows rainfall since the weather station was set up in May. On the Ist August, the total rainfall was 117mm. Today it is 283mm 1.e. 165mm in just 21 days. Our total ANNUAL rainfall in Dundee is 750mm. It is therefore quite possible that by the end of the month, we will have received one quarter of our annual rainfall in just one month.
So, why is this happening? One explanation is global warming. Remember that climate change is not just about long, hot summers and vineyards in Tayside. It could be about milder, less snowy winters and windier, wetter summers. When temperatures increase, air rises giving low pressure and increasing winds. Rising air also condenses, forms clouds and....produces rain!
The forecast is for a drier September ... when it get cooler. Well, you can't have everything!