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Mutual States of America located in the significant partially of the North American continent, occupying a vast section between 25 th and 57 th parallels of north latitude. To the east, washed Atlantic, in the south - the Gulf of Mexico Caribbean Plethora in the west and south-west - the Pacific Ocean, the northern and north-west seashore of Alaska - the Arctic Ocean.
U.S. borders with Canada in the north (the add up to ultimately of 8893 km borders, including 2,477 km in Alaska), with Mexico in the south (3141 km), with Russia in the north-west (domain border to the Bering Limiting and the Arctic shelf, the reserve between the islands of Lesser and Gargantuan Diomede, belonging to the United States and Russia, separately, is only 4 km) and Cuba in the south-east (the dado as the breaker, the Straits of Florida, and on land, in the U.S. naval base at Guantanamo Bay, located straight away in Cuba).
The Hawaiian Islands are located in the dominant Pacific Ocean, a haughtiness of there 4000 km from the mainland. Varied island territories, and in whole make or another owned on the U.S., scattered across the waters of the Pacific and Atlantic oceans.
Second to the supervision of the Amalgamated States is also a thousand of key territories with other public status (in each at all events, it installs a separate agreement, backed not later than the conclusion of the federal authorities). These involve the ait area of American Samoa, Guam, Northern Mariana Islands, Marshall Islands, Federated States of Micronesia, Puerto Rico, U.S. Virgin Islands, Baker, Howland Atoll and Jarvis Cay, Johnston Atoll, Midway Atoll, Navassa Islet, Palmyra, Wake, Kingman Reef and some other territory.
The gross square footage of the native land is regarding 9,360,000 l- meters. km (9,820,000 honourable meters. kms - with the islands and the Trust Territories).
Ambience and survive
Climate USA is a extraordinary heterogeneity of climatic conditions. At the insides of the nation drink identified two big climatic dominion - East and West. The confines between them coincides with isohyet 500 mm and should be roughly along the meridian 100 ° W
Eastern sector as a whole is characterized by steamy mood with an average annual rainfall of 500 mm along the meridian 100 ° W to more than 1500 mm in the south-east. The main beginning of shower - pleasant drizzly air coming from the Opening of Mexico, and - to a much lesser capaciousness - from the Atlantic Ocean. Temperatures in this tract are more influenced aside latitude than the tallness of the face, and preferably uniformly increased from north to south. As a result, terse summers in the north and warm in the south protracted and hot, and winters in the north has a extensive and chill, in the south is excluding, and dialect right warm.
Average weather New York. Much of the eastern region source to frequent weather changes, for all practical purposes because the rush of vexed aura from the south ordinarily interrupted the masses of heatless manner infiltrating from the north. Especially unsettled weather in Unknown England, where prolix rainy seasons quickly replaced cloudless dry.
In the Western Region high ground has a true pressure on the circulation of the atmosphere. When vlagonesuschie aerate masses unfixed from the Pacific Ocean to the east, rising more than the momentous mountains, where precipitation. Commensurate with explain, the windward western slopes of the mountains is much better supplied with moisture, than the vast arid district located on the leeward side of the shower cover of mountains. Although in broad the Western Locality is inborn in the arid climate, positively b in any event annual showers ranges from less than 120 mm in the Sonora desert to more than 2500 mm in some areas the Strand Ranges.
Temperatures in the western sector depends on latitude and altitude, and in coastal areas studied close moderating the impact of the ocean. The highest of the mountains are constantly in the winter, whereas in the most southern empty most of the year dominated past hot weather. Unstable Mountains to conserve them from the invasion of cold air masses from the north.
Climatic regions. On the mainland, the U.S. gives 11 climatic regions, including four in the Eastern climatic territory and seven - in the West.
Humid continental ambience with terse summers covers the northern states from North Dakota to Maine. Summer is sawn-off and there is a affable, daytime maximum temperatures (27-38 ° C) were observed in brilliant weather, much lower - in the cloud. The frost-free interval, brief - from less than 120 days in North Dakota to approximately 180 days in the Ness Peninsula Cod in Massachusetts. The winters are large and cold, continually with daytime maximum temperatures cheaper than 0 ° C.
Weather conditions Chicago. Typical annual sleet ranges from 500 mm in the west to during the course of 1000 mm on the coast of New England. At least half of the total snowfall falls in summer, and they commonly bear relentless character. Winter downpour usually falls as snow. Maximum capacity of snow extend over in the mountains of Chic England and signally in the valley r.Sv. Lawrence.
Humid continental clime with prolonged summer includes most of the Midwest and is characterized by way of elongated hot and soggy summer. Hot summer days, the top temperatures overtake 32 ° C, the nights are warm. The greater in some measure of the partition frost-free span lasts from 150 to 200 days, which creates favorable conditions in return growing corn and other crops. Winters are cold, but there are periods of serene suffer, oft with fog.
Average annual sleet ranges from 500 mm in the west to upward of 1000 mm on the slide of New England. At least half of the mount up to precipitation falls in summer, and they on numerous occasions give birth to torrential character. Winter sleet as per usual falls as snow. Maximal capacity of snow make up for in the mountains of New England and above all in the valley r.Sv. Lawrence.
Soggy continental feeling with lengthy summer includes most of the Midwest and is characterized past hunger peppery and clammy summer. Hot summer days, the superlative temperatures better 32 ° C, the nights are warm. The greater get of the locale frost-free span lasts from 150 to 200 days, which creates favorable conditions in regard to growing corn and other crops. Winters are chilling, but there are periods of mild indisposed, habitually with fog.
Common annual precipitation ranges from 500 mm in the west to wellnigh 1300 mm in the east, with their most falls in the mould of summer showers. Although snowfalls are annual, winter rain primarily rain.
Muggy subtropical mood occupies wellnigh the entire rural area to the south of the wet continental climate. Summer is elongated and heated: scalding and steamy date (limit temperature 32-38 ° C); few nights cooler, but most of the time not less wet. Frost-free full stop lasts 200 days in the north to more than 300 days on the Fiord Coast. In some years there is no winter frost. Winters throughout the sphere are epigrammatic and temperate, the maximum daytime temperatures of 10 to 21 ° C.
In most of the arrondissement falls year on norm 1000-1500 mm of rainstorm in the west - only 500 mm. The dispersal of precipitation on seasonal uniform. They fall on the whole in the brand of rain. In late summer and autumn coastal areas again suffer from tropical storms, which conflict tremendous bad force.
Muggy and lecherous tropical feeling is the most southern function of Florida. This is the just district in reality tropical atmosphere on the mainland Collaborative States. This year straightforward there are no trenchant seasonal and diurnal fluctuations in temperature. Afternoon apogee temperatures are typically 21-32 ° C, and at gloaming only 6 ° C below. Just as in the subtropical weather, here high relative humidity and constantly stuffy. Normally annual showers exceeds 1500 mm, with most of their accounts in the service of the epoch from May to October.
District not excessive maritime climate is confined to the Pacific Northwest within the Pacific regional mining district, north of San Francisco Bay. Influenced next to the dominating westerly winds blowing from the Pacific Ocean, summer here is cooler and winters warmer than other places the U.S., located on the for all that latitudes. Summer is on the whole lively, upper limit daily temperature 21-26 ° C and nadir night-time - 10-15 ° C. Winters are kindly, with temperatures for the most part exposed to 0 ° C, the uttermost daytime temperature rises to 4-15 ° C. The frost-free epoch lasts from 200 up to 300 days, and ice-cold are normally at best at night.
Weather March. Normal annual rainfall ranges from 750 to 3600 mm and more, with the most muggy western slopes of the Coast Ranges. Although the rains capitulation year round, most of them in the character of unceasing rain or drizzle in the lead-gray empyrean falls on winter. Clouds typical winter withstand, and in aggregation with frequent fog and fog, the ill reminds everlasting drizzle with starless in Western Europe. Every year, winter is a scarcely any days with snowfalls, but the snow kept just on the tops of the mountains. As well as aside the Pacific Ocean. August and September - the warmest months (+24-30 ° C), January and February - the most audacious (with respect to +12 ° C) and the wettest, but at any time, the gobs breezes soothe the ill in the administration of greater comfort. However, urban smog in conjunction with the summer fury makes the object of summer is not the a- beat to by the metropolis, while abutting the northern and southern resort areas in the unmodified space, have first-rate out of sorts conditions.
The climate of Alaska more bleak, since 30% of its territory is located within the Arctic Circle. In northern and inside areas, with their sub-Arctic weather, the thermometer in winter on numerous occasions drop to -45-50 ° C, in summer the air was fiery to +16-20 ° C (in the northern regions - +2-6 ° C) with remarkably muffled rainfall (about 250 mm annually). In southern and principal parts of the climate is equable maritime, average summer temperature is everywhere +18 ° C, but often the manner is heated to +30 ° C) in winter - from -6 ° C to +4 ° C, precipitation is falling from 400 to 600 mm per year.