 |
West Moors (East Dorset): 1971-2000
climatology.
|
West Moors (East Dorset) estimated long-term
climatology (eLTA) 1971-2000**
(the data below are based initially on Hurn airport figures [
for rainfall], or based on Hurn [for temperature], continuously updated as we
acquire data. When I get 5, then 10 years data, I'll put up averages based on
my own data for those periods.
West Moors lies roughly 6 km or 3.5mi NNW of Bournemouth [Hurn] airport, and is
about 12 km or 7 miles inland from the nearest coast at Bournemouth - which is
nearly due south of us here: elsewhere on this site there are some maps etc.,
to make all this clearer. ** See at bottom of panel for
idea of how the 1981-2010 averages might differ from these here.)
(precipitation in mm, temperatures in degC)
Remember, that for the temperature data, the data are gathered from a severely
enclosed suburban garden. They are a true reflection of similarly exposed
locations, so in a sense they are 'real' data; however, they cannot be compared
with 'official', open-site data. However, we are now approaching 5 years-worth
of data, so I hope to give an idea of how our figures might relate to an
'official' site in the near future.
BACK TO LOCAL RECORDS INTRODUCTION
| |
AvgPPN |
MeanTx(24hr) |
MeanTn(24hr) |
MeanDay |
| JAN |
86 |
8.1 |
2.2 |
5.1 |
| FEB |
69 |
8.6 |
2.3 |
5.5 |
| MAR |
71 |
11.9 |
3.6 |
7.7 |
| APR |
52 |
14.9 |
4.6 |
9.7 |
| MAY |
57 |
18.2 |
7.7 |
13.0 |
| JUN |
59 |
21.0 |
10.6 |
15.8 |
| JUL |
38 |
23.3 |
12.4 |
17.9 |
| AUG |
53 |
23.2 |
12.1 |
17.7 |
| SEP |
66 |
20.1 |
10.2 |
15.1 |
| OCT |
86 |
15.8 |
7.6 |
11.7 |
| NOV |
89 |
11.2 |
4.0 |
7.6 |
| DEC |
106 |
8.7 |
3.4 |
6.1 |
| |
|
|
|
|
| ANN |
833 |
15.42 |
6.73 |
11.05 |
| |
|
|
|
|
| Spring |
180 |
15.0 |
5.3 |
10.1 |
| Summer |
151 |
22.5 |
11.7 |
17.1 |
| Autumn |
241 |
15.7 |
7.3 |
11.5 |
| Winter |
261 |
8.5 |
2.6 |
5.5 |
** I have compared the averages for Hurn (a little away from us) over the
'standard' 30-year periods 1971-2000 [7100] & 1981-2010 [8110]: the
following are the key points ...
RAINFALL:
+ Winter (November to February): [ 8110 ] slightly drier
than [7100], but only some -2 to -4%.
+ April & May: [ 8100 ] was a little wetter (~+4%)
than [ 7100 ].
+ Early/mid summer showed quite a 'swing' in fortunes; June [
8100 ] was some -8% drier than [ 7100 ], but more than made up by
July being some +29% wetter! July showed the largest
change across the entire year.
+ October/November: showed up the marked increase in
precipitation noted elsewhere; the change from [ 7100 ] to [ 8110 ] was some
+15%.
+ All other months showed only small, non-significant changes.
+ For the year as a whole, the area showed a 'wet' bias,
with a +3% change [ 7100 ] to [ 8110 ].
TEMPERATURE:
+ In general, mean temperatures between the two thirty-year periods (1971-2000
& 1981-2010) show an increase, of the order +0.2 to +0.5C,
with April showing the largest increase; however, a notable exception
was December - for this month, the mean from the early data-set has
decreased by 0.5C!
The small increase between the 30-year periods is to be expected, though what
the exact mechanism was remains speculative. It isn't sufficient to quote
'global warming' (especially in view of the December decrease), and
urbanisation & the increase in commercial traffic around the observing site
may have played an important part. Another factor is the undoubted warming of
the nearly-adjacent English Channel, though again the decrease in December
values is problematical here.
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