Re: Weather And Latitude Are Not Allies
- From: Martin Brown <|||newspam|||@nezumi.demon.co.uk>
- Date: Wed, 30 Jan 2008 13:53:53 -0800 (PST)
On Jan 28, 4:32 am, xiko...@xxxxxxxxxxxx wrote:
There is a popular assumption that if you move to higher latitudes
(toward the poles) you can escape the heat, and that by moving to
lower latitudes (toward the equator) you can escape the cold.
And it is basically true if all other things are equal but there are
some notable exceptions. Continental climates are much hotter in
summer and colder in winter, martime climates are moderated by the
influence of the sea.
Ireland and the West coast of Scotland are in addition warmed by the
North Atlanic drift (or Gulf Stream Current) and there are hardy palm
trees in Plockton Scotland (lat 57.5 N).
http://www.bbc.co.uk/weather/features/understanding/scotland_02.shtml
http://lyncooper.fotki.com/highland-scenery/palm_trees_at_plockton_2.html
You can grow astonishingly tender plants on the right sheltered parts
of the UK and Irish west coast.
The equation is simple. But is it real? If it was, then the most
northerly capital, Reykjavík, would also be the coldest...at least
until they establish a country on Antarctica. Yes, it appears that
latitude is slacking off and failing to keep temperatures in line.
Reykjavik also has an abundance of geothermal energy too with the
pavements (footpaths) in town heated by waste hot water. But it is a
on small island in a big ocean and so has a maritime climate in the
inhabited coastal zone.
This was brought home to me when preparing for a radio interview in
Dublin, Ireland. February had just roiled in and I was sitting back
comfortably in my good old Ottawa weather, scraping icicles off my
toes. I was giddy with excitement over our warm spell, which it was
reaching a high of minus-5 (that's about 20-degrees American). I
always ask questions the day before an interview, to learn a bit about
my audience, so I asked the producer, "So what's the weather forecast
in Dublin?" asked.
I am at latitude 54.5N in the UK and so far this winter we have hardly
had any frosts at all.
"Oh it's horrible," she told me. "People are bracing for a deep winter
freeze that's supposed to hit tonight. It might even get as cold as
minus-5!"
This blew me away, that the folks in Dublin would be worried about the
thermometer dips as low as ours spikes high. After all, isn't Dublin
about the same latitude as Ottawa?
I whipped out my trusty atlas. We live almost exactly on the 45th
parallel. If we lived exactly on it, we would have to share our bed
with a cow and a dozen chickens across the road - that's how close we
are.
I turned the pages to find Ireland. Could I have been mistaken? Is
Dublin really quite south of us? No, it turns out that Dublin lies at
the 53rd parallel. Hey! They should
Continental climate vs maritime. But there is more to it than that.
The Falkland Islands are at a similar southern latitude to the UK but
are much closer to the maritime weather conditions expected for their
latitude.
Regards,
Martin Brown
.
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- Weather And Latitude Are Not Allies
- From: xikom01
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