Dave Ludlow wrote:

Yes, calibrated instruments would be in trouble for accuracy so such
readings would be pretty meaningless. Not to mention microclimate, I
won't even go there. It's hard enough to get things right to the
nearest tenth, never mind hundredths and in some conditions, the
temperature inside official screens will be a degree or two different
from the true air temperature yet this is known about and is
accepted.

Accuracy only really applies when comparing one instrument to another.
Resolution of the instrument is a different matter and is generally
finer than the accuracy (0.1degC vs. +/-0.5degC).

I'm not a fan of decimals never mind hundredths, they make me nervous
(yet the GW debate depends on them).

For a discrete reading, then probably true. When averaging over many
readings, -0.0C (or -0C) conveys meaning that has been hidden in the
rounding of the value.

--
Jonathan Stott
Canterbury Weather: http://www.canterburyweather.co.uk/
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