Rees
‘
:
‘
yi a1 ts
t
*
listed above), when a dry-bulb reading was obviously off by 5 degrees as indicated both by th
recording hygrothermograph and the extreme thermometers.
Where direct comparison immediately
after re-setting showed consistently that a maximum or minimum thermometer differed from the
direct-reading thermometer, the maximum or minimum value was corrected accordingly.
Thus the
minimum thermometer on KEITH during the first Intensive Phase was found to read 1° F. too low
and was consistently corrected by this amount.
Except where otherwise noted in the Tables, a
thermometers were read to the nearest half degree (values to the nearest .0 or 5).
Since thi
1
psychron thermometers are designed and manufactured to be correct within 0.3° F. and since
i
i
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i§
.
|
|
af
these were taken as being standard, the values are correct to within 0.5° F. (see Notes,
Table 4).
RR values are correct within 0.0], not allowing for any sampling bias associated with
exposure.
'
.
.
.
‘
The authors believe that the gages were well exposed and that there was no appreci
able sampling bias due to exposure.
|
|
f
i4
The user of these data can judge from Figures 13 and 14
and from information in the text whether or not he agrees with this conclusion.
N is given in tenths, and except where the value is followed by "?" or is qualified by tl!
4
Remarks, is correct within 0.].
4
a real value lying between 0.4 and 0.6, inclusive.
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i
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Jf
Thus 0.5, representing the observer's best estimate, indicat
It should be noted that N at these statio:
is often lower than N as observed at FRED because while FRED often reported 10Cs, BRUCE and
KEITH seldom did so.
Probably the FRED observation is in error in these instances (see Notes
for Table 4).
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j
i
i
Crmy is a more or less accurate classification of cloud types and amounts, the accuracy
varying with the observer.
Some of the observers were inexperienced, having been trained in
Pa
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|
cloud observations only for a few hours prior to the start of the first observational] period.
Others were skilled observers, with many years of experience as well as thorough training.
In general, the cloud identifications of the unskilled observers were nearly always correct
a
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a
4
.
es
.?
e
*.)
AE
4
with reference to recognition of cumulus and cirrus (undifferentiated);
but probably they
sometimes failed to recognize strato-cumulus, and particular types of cirrus and they probabl;
sometimes confused altocumulus and cirro-cumulus or alto-stratus and cirro-stratus.
Therefore
in utilizing these observational data, reference should be made to the cloud photographs, to
observations made simultaneously from other islets (including FRED), and to the following
tabulation, which shows which observations in Table 6 were made by experienced observers.
Experienced observers made the observations at BRUCE during these intervals (all times
are inclusive):
Aug 29
1200 Aug 24 -- 0900 Aug 25;
1200 Aug 26 -- 0900 Aug 27;
1200 Aug 28 -- 090