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22-521: The climate is a typically arid continental climate , with cold winters and extremely hot, dry summers. The city of Khiva in Khorezm Region is a UNESCO World Heritage Site with world-famous architectural monuments, making Khiva one of the main centers for international tourism in the country. The economy of Khorezm Region is primarily based on cotton . Cotton is by far the main crop, although rice production has increased significantly in

44-458: A mean temperature of 10 °C (50 °F) or higher. D climate groups have two types: Most of Europe north of the 44th parallel exhibits a Do or Dc climate type. This represents subarctic and subpolar oceanic climate realms, defined the same as in Köppen's scheme, where 1 to 3 months have an average temperature of 10 °C (50 °F) or above. In this climate zone there is only

66-578: A short period (normally 50 to 90 days) that is frost free. In the original scheme, this group was not further divided; later, the designations Eo and Ec were created: As in Group D , a third letter can be added to indicate seasonality of precipitation. There are no separate counterparts to the Köppen Dfd , Dwd , and Dsd climate types in Trewartha's scheme, but a letter can optionally be added to

88-460: A significant annual variation in temperature (warm to hot summers and cold winters). They tend to occur in central and eastern parts of the three northern-tier continents ( North America , Europe , and Asia ), typically in the middle latitudes (40 to 55 or 60 degrees north), often within large landmasses, where prevailing winds blow overland bringing some precipitation, and temperatures are not moderated by oceans. Continental climates occur mostly in

110-839: Is a place where many famous scholars were born, such as Abu Rayhan Biruni and al-Khwārizmī . The region has a well-developed transportation infrastructure, with over 130 km of railways and 2000 km of surfaced roads. The region is connected by rail to European Russia and the Caucasus . People in Khorezm speak in Khorezmian, which is an Oghuz dialect of Turkic Languages that is different from Karluk (in which most of other Uzbek regions' people speak) The Region consists of 11 districts (listed below) and two district-level cities: Urgench and Khiva . There are 3 cities ( Urgench , Khiva , Pitnak ) and 56 urban-type settlements in

132-697: Is somewhat more stable than winter weather. Continental climates are considered as temperate climate varieties due to their location in the temperate zones, but are classified separately from other temperate climates in the Köppen climate classification system where they are identified by their first letter, a capital D . In the Trewartha climate classification , they are identified as Dc . Continental climate has at least one month averaging below 0 °C (32 °F) and at least one month averaging above 10 °C (50 °F). Annual precipitation in this zone

154-669: Is usually between 600 millimetres (24 in) and 1,200 millimetres (47 in), The timing of intermediate spring-like or autumn-like temperatures in this zone vary depending on latitude and/or elevation. For example, spring may arrive as soon as March (in Northern hemisphere , September in Southern hemisphere ) in the southern (in Northern hemisphere, northern in Southern hemisphere), parts of this zone or as late as May (November) in

176-407: The G or H is placed in front of the applicable thermal letter rather than replacing it. The second letter used reflects the corrected monthly temperatures, not the actual monthly temperatures. An option exists to include information on both the warmest and coldest months for every climate by adding a third and fourth letter respectively. The letters, denoting mean monthly temperature, conform to

198-542: The Köppen–Trewartha climate classification ( KTC ), is a climate classification system first published by American geographer Glenn Thomas Trewartha in 1966. It is a modified version of the Köppen–Geiger system , created to answer some of its deficiencies. The Trewartha system attempts to redefine the middle latitudes to be closer to vegetation zoning and genetic climate systems. Trewartha's modifications to

220-480: The Universal Thermal Scale (see below) is used. In the Trewartha scheme the C climate group encompasses subtropical climates, which have 8 or more months with a mean temperature of 10 °C (50 °F) or higher. There are only two types within the C or subtropical climate group: In the Trewartha scheme the D climate group encompasses temperate climates that have 4 to 7 months with

242-435: The 1884 Köppen climate system sought to reclass the middle latitudes into three groups, according to how many months have a mean temperature of 10 °C (50 °F) or higher: The tropical climates and polar climates remained the same as in the original Köppen climate classification. The "highland" climate is ambiguously defined. Newer users of KTC generally omit this option. This is the tropical climate realm, defined

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264-464: The Khorazm Region. In March 2020 the new Tuproqqalʼa District was created out of the larger, eastern part of Hazorasp District . Gurlen is one of the most unique districts in the region. The most interesting place in Khorezm is Aqdarband village. Ancestors of the people of Aqdarband came from Iran in 15th age to protect Khiva. Continental climate Continental climates often have

286-616: The Northern Hemisphere due to the large landmasses found there. Most of northeastern China , eastern and southeastern Europe , much of Russia south of the Arctic Circle , central and southeastern Canada , and the central and northeastern United States have this type of climate. Continentality is a measure of the degree to which a region experiences this type of climate. In continental climates, precipitation tends to be moderate in amount, concentrated mostly in

308-433: The average temperature of each month to a sea-level value—using the formula of adding 5.6 °C (10.1 °F) for each 1,000 meters (3,281 ft) of elevation—would cause the climate to fit into a different thermal group from that into which the actual monthly temperatures place it. Sometimes G is used instead of H if the above is true and the altitude is between 500 and 2,500 meters (1,640 and 8,202 ft), but

330-428: The end of the symbol to indicate the temperature of the coldest month ( see below ). This is the polar climate group, where all months have a monthly mean air temperature below 10 °C (50 °F). Polar climates have two subtypes, Ft ( tundra ) and Fi ( ice cap ): Highland climates are those in which altitude plays a role in determining climate classification. Specifically, this would apply if correcting

352-399: The influence of cool oceanic air masses is more marked toward the west. In western and eastern Asia, and the central United States these climates grade off toward humid subtropical climates ( Cfa/Cwa ), subtropical highland climates ( Cwb ), or Mediterranean climates ( Csa/Csb ) to the south. Trewartha climate classification The Trewartha climate classification ( TCC ), or

374-529: The last several years. (though the Uzbek government discourages rice production near to deserts, over water usage concerns) There are also many orchards and vineyards, melon and gourd plantations and potato fields. Khorezm Region is famous for its "gurvak" melon in Uzbekistan. Industry is also heavily oriented to cotton, with cotton refining, cottonseed oil extraction and textiles predominating. Khorezm

396-472: The north (south). Summers are warm or hot while winters are below freezing and sustain lots of frost. Continental climates exist where cold air masses infiltrate during the winter from shorter days and warm air masses form in summer under conditions of high sun and longer days. Places with continental climates are as a rule either far from any moderating effect of oceans or are so situated that prevailing winds tend to head offshore. Such regions get quite warm in

418-432: The same as in Köppen's scheme (i.e., all 12 months average 18 °C (64.4 °F) or above). The A climates are the realm of the winterless frost-free zone. There was no specific monsoon climate identifier in the original scheme, but Am was added later, with the same parameters as Köppen's (except that at least three months, rather than one, must have less than 60 mm average precipitation). BW and BS mean

440-547: The same as in the Köppen scheme. However, a different formula is used to quantify the aridity threshold: 10( T − 10) + 3 P , with T equaling the mean annual temperature in degrees Celsius, and P denoting the percentage of total precipitation received in the six high-sun months (April through September in the Northern Hemisphere , October through March in the Southern ). Unlike in Köppen's scheme, no thermal subsets exist within this group in Trewartha's, unless

462-516: The summer, achieving temperatures characteristic of tropical climates but are colder than any other climates of similar latitude in the winter. In the Köppen climate system, these climates grade off toward temperate climates equator-ward where winters are less severe and semi-arid climates or arid climates where precipitation becomes inadequate for tall-grass prairies and shrublands. In Europe these climates may grade off into oceanic climates ( Cfb ) or subpolar oceanic climates ( Cfc ) in which

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484-580: The warmer months. Only a few areas—in the mountains of the Pacific Northwest of North America and in Iran , northern Iraq , adjacent Turkey , Afghanistan , Pakistan , and Central Asia —show a winter maximum in precipitation. A portion of the annual precipitation falls as snowfall, and snow often remains on the ground for more than a month. Summers in continental climates can feature thunderstorms and frequent hot temperatures; however, summer weather

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