The Weather and Climate Fluctuations
'Funny weather we are having' is a statment of the
obvious we have used for generations as a greeting. When the deep cold lasts long
and heavy snow and blizzards give us the shivers we replace "funny"
with something stronger, such as "terrible", "ghastly".
At times like these people ask what is happening to
the weather.
So we go to the experts, who tells us, in language
appropriate to the subject, what happened yesterday, what is happening today,
and what might happen in the next few years. Weather and climate specialists
all over the world have ammassed a vast quanity of information. They can
describe what is happening around us. With satellites they can forecast more
accurately what might happen in the immediate future. Their research has
produced evidence of why past climatic changes took place.
There have been many climate fluctuations ovver th
10,000 years since Britain was last covered with an ice sheet. Advances and
retreats of ice in the northern hemisphere during the past 500,000 years can be
accounted for by changes in the warmth from the Sun.
This was caused by alterations in the Earth's orbit at
periods of 96,000, 40,000 and 20,000 years. Although that theory is widley
accepted as a possible explanations for ice ages, it has not been proved. More
than 50 theories have been put forward, but only a few have not been completely
dismissed.
Not long ago a new theory was published in the science
journal "Nature". According to Dr. Garry Hunt, of University College,
intense radiations from the nuclear explosion of a nearby supernova - a star --
could cause the destruction of part or all of the ozone layer and in this way trigger
an ice age.
As for me, i like Autumn best of all. The days become
shorter and the nights longer. It isn't so hot in the day-time.
The trees are covered with yellow and red leaves. At
the end of summer apples, pears, plums and other fruit become ripe. In the South
there are many oranges, peaches and tangerines. Autumn is plesant when it does
not rain. General Autumn is a rainy season of the year. When it rains the
weather is nasty. The sky is covered with heavy clouds. It drizzles. It is
muddy and wet.
Список літератури
Для підготовки
даної роботи були використані матеріали з сайту http://www.bigmir.net/
