Norman Lynagh wrote:
The 0900-0900 reporting convention has thrown up a quirky anomaly here
today. The maximum temperature attributed to yesterday actually occurred
at 0900z today while the minimum temperature attributed to today
actually occurred at 0900z yesterday. This has occurred because of the
continuous rise in temperature from 0900z yesterday to 0900z today.


That sort of event is a fairly common occurrence here, particularly in
the colder seasons when nights can be warmer than days. I see two options.

1) If I feel I am measuring 0900-0900 then it doesn't matter anyway.
Whatever happened between those times is fine regardless of what time it
happened. i.e. no anomaly.

2) If I feel I am measuring 'yesterday and today' then by reading my
min-max twice a day (0900 and 1700) I can adapt and report a min and max
for 'yesterday', and similarly for 'today'. i.e. no anomaly

I favour option 2 because it is a regular event. If it only happened
once or twice a year, I think I would favour option 1.

Alternatively, I could find a fence and sit on it (-:

--
Gianna Stefani

www.buchan-meteo.org.uk