.... (27th June, 2012)

Looks as if today is going to be another 'dot' day for sunshine (to
adopt cricketing parlance); using the Hurn (03862) output, the total
sunshine this month (so far/KZS) = 85 h, or 3.1 h/day.

In Hurn's record for sunshine (begins 1969, source Met Office web site),
the lowest June value (CSR instrument) was 139 h in 1990.

'Fudging' between the two (because of the instrument differences), we
would need something like 30 hours sunshine by the current instrument
over the last 3 days of the month to avoid this being the dullest June
in that 1969+ record. Not impossible, but looking unlikely.

For the *three* nominal summer months (June, July, August), then
presently this is the dullest summer month in that 1969+ record; the
previous lowest sunshine total for a summer month occurred in August
2010, and that was of course a KZS (so direct comparison possible), when
the value was 105 h. So we need another 15 h over the next three days by
that instrument to avoid this being the dullest summer-time month (1969+)

Martin.




--
West Moors / East Dorset
Lat: 50deg 49.25'N, Long: 01deg 53.05'W
Height (amsl): 17 m (56 feet)
COL category: C1 overall

On 27/06/2012 16:00, Martin Rowley wrote:
... (27th June, 2012)
In Hurn's record for sunshine (begins 1969, source Met Office web site),
the lowest June value (CSR instrument) was 139 h in 1990.
'Fudging' between the two (because of the instrument differences), we
would need something like 30 hours sunshine by the current instrument
over the last 3 days of the month to avoid this being the dullest June
in that 1969+ record. Not impossible, but looking unlikely.
For the *three* nominal summer months (June, July, August), then
presently this is the dullest summer month in that 1969+ record; the
previous lowest sunshine total for a summer month occurred in August
2010, and that was of course a KZS (so direct comparison possible), when
the value was 105 h. So we need another 15 h over the next three days by
that instrument to avoid this being the dullest summer-time month (1969+)

.... (1st July, 2012)

Total sunshine Hurn (KZS) for whole-month = 101.4hr.

Even allowing for the instrument changes, IMV we've 'comfortably' (if
that's the word I want!) achieved the lowest June sunshine total in
Hurn's record (starts 1969).

And, a bit of a close-run thing, it looks as if we've had the dullest
*any* summer month (JJA) in that same record, by just under 4hr.

The average daily sunshine for June 2012 = 3.4 h/day; using the same
instrument's average (8 years) would suggest we should have ~6.6 h/day,
so not far off half-of-average when compared to most recent years.

Only 10 days had = 5hr of sunshine (and often broken), and just 2 days
(18th and 19th) 10 hr each.

Martin.





--
West Moors / East Dorset
Lat: 50deg 49.25'N, Long: 01deg 53.05'W
Height (amsl): 17 m (56 feet)
COL category: C1 overall

On 01/07/12 09:19, Martin Rowley wrote:
On 27/06/2012 16:00, Martin Rowley wrote:
... (27th June, 2012)
In Hurn's record for sunshine (begins 1969, source Met Office web site),
the lowest June value (CSR instrument) was 139 h in 1990.
'Fudging' between the two (because of the instrument differences), we
would need something like 30 hours sunshine by the current instrument
over the last 3 days of the month to avoid this being the dullest June
in that 1969+ record. Not impossible, but looking unlikely.
For the *three* nominal summer months (June, July, August), then
presently this is the dullest summer month in that 1969+ record; the
previous lowest sunshine total for a summer month occurred in August
2010, and that was of course a KZS (so direct comparison possible), when
the value was 105 h. So we need another 15 h over the next three days by
that instrument to avoid this being the dullest summer-time month (1969+)

... (1st July, 2012)

Total sunshine Hurn (KZS) for whole-month = 101.4hr.

Even allowing for the instrument changes, IMV we've 'comfortably' (if
that's the word I want!) achieved the lowest June sunshine total in
Hurn's record (starts 1969).

And, a bit of a close-run thing, it looks as if we've had the dullest
*any* summer month (JJA) in that same record, by just under 4hr.

The average daily sunshine for June 2012 = 3.4 h/day; using the same
instrument's average (8 years) would suggest we should have ~6.6 h/day,
so not far off half-of-average when compared to most recent years.

Only 10 days had = 5hr of sunshine (and often broken), and just 2 days
(18th and 19th) 10 hr each.

Martin.



How does the second half of June compare with the first half? I get the
impression that the second half of June was not that far from average,
which would emphasise just how bad the first half was.

On 01/07/2012 11:22, Adam Lea wrote:
snip
How does the second half of June compare with the first half? I get the
impression that the second half of June was not that far from average,
which would emphasise just how bad the first half was.

.... indeed yes: days 01-14, there were only 2 days with 5hr of sun
(and fitful stuff at that); days 15-30 there were 8 days 5hr.

The daily average first-half = 1.4h
average second-half = 5.4h

Martin.


--
West Moors / East Dorset
Lat: 50deg 49.25'N, Long: 01deg 53.05'W
Height (amsl): 17 m (56 feet)
COL category: C1 overall