Chiswell Green, St Albans (51° 44'N, 0° 24'W, 101m AMSL) July 2008

Mean Temp: 17.2 C
Mean Max: 22.4 C
Max Max: 29.8 C on the 27th (console shows 30 C but not captured by the
logger)
Min Max: 16.9 C on 6th
Mean Min: 11.8 C
Min Min: 7.3 C on 4th
Max Min: 16.1 C on 27th
Rain: 93.7 mm
Max rain rate 93.7 mm/hr
Max Rain: 24.6 mm on the 7th
Days with Rain = 0.2mm: 13
Days with Rain = 2.0mm: 7
Days with Rain = 20.0mm: 2
Mean Pressu 1012.7 hPa
Max Pressu 1025.7 hPa on 22nd
Min Pressu 994.1 hPa on 7th
Days of Air Frost: 0
Dominant Wind Direction: WSW 26%




Alan Gardiner
Chiswell Green, St Albans
101m ASL
02/08/2008 10:51:33

On Sat, 2 Aug 2008 at 10:53:41, Alan Gardiner
wrote in uk.sci.weather :

Chiswell Green, St Albans (51° 44'N, 0° 24'W, 101m AMSL) July 2008

Max Max: 29.8 C on the 27th (console shows 30 C but not captured by the
logger)

I've had that happen, too - which temperature should be recorded as the
maximum in such circumstances?
--
Paul Hyett, Cheltenham (change 'invalid83261' to 'blueyonder' to email me)

On Sat, 02 Aug 2008 16:44:19 GMT, Paul Hyett wrote:

On Sat, 2 Aug 2008 at 10:53:41, Alan Gardiner
wrote in uk.sci.weather :

Chiswell Green, St Albans (51° 44'N, 0° 24'W, 101m AMSL) July 2008

Max Max: 29.8 C on the 27th (console shows 30 C but not captured by the
logger)

I've had that happen, too - which temperature should be recorded as the
maximum in such circumstances?

I suspect that the console reading is correct but the temperature was at
that level for such a short time that it was not transferred to the logger
memory. A rounding up or down error is a possibility as well.

It would be rather laborious to inspect all of the maximum and minimum
readings on the console against the logger readings so I use the logger
readings. I have noticed this effect before but in this case it did stand
out.

If John Dann reads this perhaps he could give provide an authoritative
reason for the discrepancy.



Alan Gardiner
Chiswell Green, St Albans
101m ASL
03/08/2008 10:05:32