The Hickman courier. [volume] (Hickman, Ky.) 1859-current, 1882-02-10
About Wind and Windstorm.

Wind has been variously defined as air
in motion, a sensible movement of tIe
air with reference to the earth's surface
etc. The word is usually applied. saws
Professor Guyot, to currents of cir moro
or less horizontal, though vertical or
slanting currents of air, whether ascand-
ing or descending, equally deserve tha
name. The horizontal component Of
this movement of the air is usuaIIr at
which is specially referred to nv the
term wind, but the powerful vertical
movements that take place in tornadoes
and other severe storms may also he in
Guided under the same subject Saws
one authority In general. a wind ie +Ia
result of an initial, local disturbance of
the density of the atmosphere. in corsa-
quence of which the air is set in notioT
its motion Is then modified by the re.
sistance of the earths surface. and Inv
the diurnal rotation of the earth abont
its axis, and may be propagated into re-
glons far distant from the original seat
of the disturbance. Some winds have
as indicated, local or temporary char
acter, while others are very permanent.
OF prevail over large areas these latter
are generally spoken of as currents ms
distinguished from the local or temno-
nation winds Space forbids ANYTHING
like a full article on this interesting sub
ject, hence We must condense the points
and give them as notes to the reader to
fill out. 1t has been ascerta,,d q at.
between the attitudes 30 degre' north
and 30 degrees south, the lowest tratum
of air moves westward betwea these
parallels and the respective poes, the
resultant motion of the lowest stEtym of
air Is eastward. A few observex1s of
the trails lett by shooting stars SAsLGt
at heights Of fFe1r-rrTe to -
great diversity of currents prevail but
no one direction predominates. The
most lmportants of the general and pc
rlOdical currents are the trade winds
which prevail between the parallels 30
degrees north and 30 degrees south latl-
tude, but attain their full breadh and
force only IN mid-6cean and ar very
materially circumscribed near thu East
ern and Western continents. Tie anti
trades Is a term which desiguaes the
current of air that prevails quite uni
fOrmly above the trade winds, at height
of 5000 feet or more above the surface
of the earth this current Is als) known
as the upper-trade, or return-trale, and
seems TO be merely the return to the
temperate zones of the air that Owed at
the surface toward the equator, There
are also the mOnsoODs, from Aayleyan
or Arabic word, signifying easonal,
which comprise all winds that With the
season change their character from being
land winds to sea winds We hive, fur
Their, the day breeze and tlB night
breeze, or the land wind and the sea
wind, which are less pronounced than
the monsoons; and there aB many
. special winds, which are usualF known
by special local names. Whencurents
of air which are moving in different
directions meet one another, Ehirling
motion Is impaired to the atmosphere,
as the simple Illustration of winl carry
ing up dust from the ground shows; and
this movement, only on a large sale, Is
storm, and it Is often accompanied by
rain or snow when the winds hus en-
countering each other are of different
temperatures Chicago Inter OceGn.