Evening star., 1925-05-03

continued from FIRST Bage.D
same as saying, Mr.. Clayton explained
that the heat of the sun itself changed
from day to day through various in
fiuences, sun spots and the like.
Mr.. Clayton has found that when
there is a marked upward swing on
these variations for a day or so an
interse high pressure area is created
over Canada, which results in driving
the hot air north and the cold air
south. This affects the United States
as far south as Washington and
probably is marked by hotter weather
in the Far North.
Contrast Is Sharp.
When the solar radiation drops
down sharply from the constant the
usual result is that the center of
high atmospheric pressure is shifted
south. always pushing the cold air
still further south and the warm air
north. Thus Washington probably
would be suffering very hot weather
while Florida might be unusually
cool. as the result of such a drop.
The local effect around the shift
ing high pressure areas is almost in
stantaneous. Mr.. Clayton said, but
before Washington would feel the
cooling effect of a high-pressure area
over Canada several days would be
required for the heat waves to make
their way south. Although this gem
eral theory holds, he pointed out, It
Is not fair to apply 1t without a
thorough understanding of all other
factors that enter into weather vari-
ations. 1t seems to bring better re-
suits when applied to the Middle
West. The Atlantic coast, with the
disturbing effect of the ocean, does
not seem to respond so readily.
Forecasts Days Ahead.
BY this method Mr.. Clayton claims
that he is able to predict weather with
fair exactitude for five days ahead and
that the general trend of weather can
be forecast for weeks and even a
| month ahead. At this time he might
be able to say that May would be a
hot or cold month, but could not say
whether any particular day more than
two weeks away would be hot or cold.
Mr.. Clayton developed his theories
| in Argentina, where, however, some
what different local conditions obtain
| than in the United States. He has
been applying it recently to deductions
| for New York City. None of his fore
| casts have been published since both
| he and DR.. Abbot are anxious to get
| them on more unassailable basis be-
| fore giving them to the world.
The mean constant values for two
week periods now are published by
| DR.. Abbot, thus giving anybody who
cares to predict with them an oppor-
| tunity to do so. Weather Bureau
| bate with DIR. Abbot and Mr.. Clayton
| expressed themselves as still skep-
| tical of the method, although willing
to cooperate in any way possible.
New CoreIations Found.
Mr.. Clayton said: I'VE constantly
| are finding more and more corelations
| between the variations from the solar
constant and the actual weather that
| follows. I presume that a good many
people will try to make weather pre-
/ dictions by the method following the
publication of my paper today. That
| will do us no good unless these peo-
| pie have a fundamental understanding
| of all the factors that enter into
weather changes"
w. l. Milham of Williams College
who presided at the session yester-
day, told of his observations of tenn
perature variations and light during
| the total eclipse of the sun in Janu-
ary. There was a total of two degrees
centigrade drop, he found, during the
| approximately two hours while the
moon was crawling across the sun
| Measurements of light showed that
this was of almost exactly the same
intensity as on a night when the moon
! Is full.
| Other Papers Read.
Other papers read were: Use of mo.
tion pictures in illustrating meteorol.
ogical problems, c. C. Clark; the oc.
currence of precipitation in connection
with the disturbance of February 90
r. H. Weightman; meteorology of the
solar eclipse, S. p. FERGUSON; Meteor
ology and superpower in the Ohio val
ley, w. c. DevereauX; influence of
land and water temperatures on south.
westerly winds in Texas, I. r. Tame
hill; tornadoes in Alabama, W. R
Stevens; long period recording instru
ments, s. P. FERGUSON.
Two films illustrating the Weather
Bureau work here were shown by
Fred W. Perkins.
A bedroom table that at the touch
of button prepares tea and an alarm
| that catches burglars are features Of