Evening star. [volume] (Washington, D.C.) 1854-1972, 1892-07-28

To the Editor of The Evening Star:
The first part Of the summer was rather cool,
even up to the middle Of June; then came the
hot weather of the last half of the first stated
summer month. We then thought that we had
had some hot summer weather weather hot
enough to be spoken Of as typical Of summer
heat The first part Of July followed, cool
and pleasant, delightful summer weather.
which all praised and enjoyed. The heated
term many thought to be over early in the
season. But later-the last half Of July-fol-
lows heated term, beside which that of the hot
spell in June is comparatively mild. The
same meteorological conditions as in June are
repeated, only intensified. That Is, continued
north flows" with the highs" far away, and
OF little value, as well indicated on the map by
the positions OF these factors, thigh" and "low,'
the gradients being far apart and the figures on
the highest line Of high showing only 80 and
one or two-tenths and that of the ''low" about
1913. Such conditions of location and degree
OF measurement will produce the same effect
every time, though at one time they may be
more intense than ut another.
The high" what little there was, was in the
southeast and far northwest and the low w.
ing far to the north, from the 'lake region to
the st. Lawrence valley. There was Con the
2od) high" in the northwest, from which
seemed to promise relief by the 25th at least,
but this ''high" did not move on such line as
to make it Of any value to the greater portion
the United States. 1t evidently moved up into
Canada beyond our line of stations and where
1t would have no effect in counteracting the in
luence of the relatively north Slows from
which we were having much tropical heat
To repeat for the benefit Of those who have
not seen former articles sent to THE STAR the
wind is from the ''high" to the "low," therefore
If We have the low on o relatively high line
OF latitude, say centering far north as 80 or
% degrees north latitude. and no very positive
high" with clean sweep way to the gulf. the
south winds must come for a long distance
over country that is heated day after day by
the action of the sun. The airs, as it were are
thereby passing over miles of heated plates,
becoming hotter and hotter as they advance
toward the low" far to the north that is draw
ing them on toward the territory for the time
occupied by it. OF course there are counter
acting influences, still at favorable hours of the
day the thermometer, even way up in northern
New England and throughout the north gen.
orally, reaches to the 100 mark or beyond.
Where there is no bank of high" there can be
no basis for a wind. Where the reservoir is
large and well elevated the flow Of water
therefrom viii be great and the current strong
80 with the air. When there is a large and
powerful 'high," say 800. and covering an
area of 1000 by 700 miles, the wind
therefrom will be cold and will reach
velocity of many miles to the
hour, say twenty-five to fifty or more The
SUMMER cOnultlOn OF the atmosphere is OF q
very negative form, represented on the map
by the gradients being very far apart, showing
the pressure to be very even over the surface
Of the country. A midwinter map, when the
temperature is relatively low all over the coun-
try, and the winds are blowing what the sailors
call great guns" the gradients will be found
to be much closer together, and the "high'
viii be extensive, and both the high and the
slow be Of a very positive nature. Where the
gradients are far apart, as they are at this
writing, there ls better opportunity for the
sun to heat. The heat is being supplied and
there are no winds to take the heat away.
stasnation prevails in the atmosphere. Such
weather as this it is refreshing to read the
philosophers who SO delight to write about the
cooling process Of the earth and the sun. Such
weather as this, though, they do not seem to
come to the front. Despite all their calcula-
tons there is evidently some heat left in the
sun, and only give it fair chance to show it
self and the evidence will be quite convincing
to the world that Old Sol is good for good
many years yet. Jpn
July 26, 1892.