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ENGLISH CLIMATE IN UNITED KINGDOM AND IN ITALY - What is the climate?, The climate in the United Kingdom, The climate in Italy

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What is the climate?

The climate is the whole of the normal and abnormal meteorology conditions that distinguish an area in a deliberate period (temperature, pressure, humidity, precipitation, winds, . ). The makers that influence the climate are lots: the latitude (the distance, measured in degree, of a place from the Equator), the altitude (in normal conditions, in summer, the temperature decreases of 0,56c for each 100 m but, in winter, the difference is, usually, lower), the nearness from the sea (the rainfall are higher and the thermal excursions are lower), from the rivers (in winter it's more wet and cold; in summer it's a bit less hot) and from the lakes (if it doesn't freeze in winter, the temperature is higher but, if it freeze, the temperature is more low). Moreover, another maker that influences the weather of a place, is the nearness of a mountain. In fact, it can reduce or decrease the quantity of precipitation or can make a place hotter or colder. The study of climate and weather is very important also to program what you can do during day and, more important thing, to foresee natural catastrophes and the trend of climate.

The climate in the United Kingdom

In United Kingdom the climate is influenced by the movement of all the major air masses, including maritime tropical, maritime polar, maritime Arctic, continental polar and continental tropical. The UK, residing in the mid-lititudes, lies in the part of hair mass convergence between warm tropical airflow and cold polar airflow. At this convergence zone, the lighter warm air rises over the heavier cold air, producing the typical weather phenomena associated with this regime, fronts, depressions and rain. As a consequence, the UK climate is relatively mild for its altitude, since it is influenced by Gulf Stream. This stream is a warm ocean current that originates in the Gulf of Mexico and travels north-east across the Atlantic. For this reason Edinburg, for example, that is 56 degrees north of the equator, the same latitude of Moscow, have a climate much milder.

Average wintertime surface temperature in Britain

Although the British Isles makes up only a relatively geographical area, differences in climate across the region do exist. The climate of the western half of the British Isles is dominated by maritime tropical and polar air, whilst the east area climate is often influenced by more continental regimes. The climate of the United Kingdom can be divided into 4 quarters.

  1. The north-west quarter is characterised by mild winters (average 6c) and cool summers (average 15c), with, also, 2500 mm of precipitation per years.
  2. The north-east quarter has cold winter (average 3c) and cool summer. Here the precipitation are lesser abundant but the snow arrives to plain.
  3. The south-west quarter experiences a more maritime climate during winter and warm summers (average 17c).
  4. The south-east quarter have cold winters and warm summer, with less precipitation, as to 500 mm per year.

These difference of quantity of precipitation is motivated by the greater influence of maritime air in the western half of Britain.

Annual rainfall

The climate in Italy

The climate of Italy can be divided in 8 different types:

  1. The Alpine climate: here the climate is very cold and snowy (especially in north-west Alps) with temperature that, sometimes, arrives at -35C. The Alps conditions the climate of Italy; in fact they give more difficult the passage of the cold winds from North and, also, the passage of the perturbations. Moreover, the winds, sometimes, when they pass the Alps, can cause the phenomena of 'fhoen', a warm and, usually, violent wind that, also in winter, rises the temperature as to about 18c, most of all in the north-west Italy.
  2. Coming down to south, in the Po valley, the climate becomes continental, with hot, sultry and dry summers and cold and wet winters. Springs and autumns are variable and rainy seasons.
  3. The Adriatic side have less sultry and hot summers and winters with a bit higher temperature. The snows are, generally, less frequent but more abundant and, frequently, there are cold air irruptions from north-east, with the wind called 'tramontana'.
  4. The 'gulf Ligurian' climate: this type of climate has a cooler summer of all Italy and a much warmer winter. Moreover the 'Liguria', maybe, is the most rainy region.
  5. The Tyrrhene climate has a summer hotter but less sultry then the continental areas. In the winter the temperature rarely decreases under 0C in plain. The precipitations are, in the centre-northern area, rather abundant.
  6. About the Apennines climate, the temperatures are low, in particular in the north area with abundant snow, particularly on the north-east side.
  7. The 'Siculan-Calabrian' climate with a hot summer (with temperature that, sometimes, rise to 40C) and a very mild winter. The snow in plain is very rare.
  8. At last, the Sardinian climate is similar at the Tyrrhene climate but, here, it is very windy, and, for this reason, the Sardinia is the unique region that produce the wind energy.

So, there are different types of climate in Italy and they are influenced by the sea and the Alps. The north part has colder winters than British winters (except east Scotland) and warmer summers. The others areas have, generally, higher temperatures. The annual rainfall is, on average, lower.


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