Tropical semi-arid steppe climate - Informative & researched article on Tropical semi-arid steppe climate
  Indianetzone: Largest Free Encyclopedia of India with thousand of articles Geography of India

Art & Culture | Entertainment | Health | Reference | Sports | Society | Travel
Forum  | RSS Feeds  | Free E-magazine
Geography of India : Indian Climate l Indian Mountains l Indian Forests l Indian Soil l Indian Vegetation l Animal Husbandry in India l Resources in India l Indian Demography l Indian Natural History l Indian Astronomy l Indian Industries l Indian Islands l Indian Airports l Zoos in India l Indian Mines & Minerals l Indian Physiography l Indian Transport l Indian Geology l Communication in India l Indian Trade l Indian Astronomers l Indian Telecommunications
Home > Reference > Geography of India > Indian Climate > Dry Climate Group > Tropical semi-arid steppe climate
Tropical semi-arid steppe climate
Tropical semi-arid steppe climate prevails in India, encompassing the coastal belt and the other adjoining lands.

Western Ghat hills at Matheran in Maharashtra, IndiaThe Tropical semi-arid steppe climate covers the entire Indian coastal belt and adjoining areas. The climate in this region is hot with extreme rainfall during the monsoon season, from June to September. The Southern parts of the belt experiences hot, seasonally dry tropical savana climate while most of the northern half experiences hot, semi-arid, tropical steppe type of climate. The climate of this region however varies with the seasons. South of Tropic of Cancer and east of the Western Ghats and the Cardamom Hills are the places experiencing such type of climate; it includes the states of Karnataka, interior Tamil Nadu, western Andhra Pradesh and central Maharashtra.

The winter season in tropical semi-arid steppe climate starts from January upto February and is followed by summer season from March to May. The period from October to December forms the post-monsoon season. The period is generally pleasant over the entire region except during a few spells of rain associated with north-east monsoon which affects the south-eastern parts of the State during October to December. The months of April and May are extremely hot, very dry and generally uncomfortable. Weather is usually very oppressive during June owing to high humidity and temperature. The next three months, namely July, August and September are somewhat comfortable due to reduced day temperature although the humidity continue to be very high.

The tropical semi-arid steppe climate is a transitional climate between the tropical wet and tropical dry climates. The controlling factors of the climate are similar to that of the tropical dry climate, though temperatures are cooler and annual precipitation is higher. Thus, tropical semi-arid steppe climate is considered to be steppe climate semi-arid rather than completely arid. The climate of the tropical steppe is a direct result of its interior continental location and proximity to the subtropical high. The tropical steppe is not as dry as the tropical desert climate, owing to its proximity to a source of moisture.

Manipal, Tropical semi-arid steppe climate Unlike the mid-latitude climates where the seasons are marked by the change from warm temperatures to cold, in the tropical dry climates seasons are notable on the basis of it, being warm and excessively warm. The generally cloudless conditions that exist in the tropical steppe allow much insulation in to warm the surface of these areas. The very high temperatures are also due to the proximity of the climate to the air mass source regions. Mean annual temperature in the tropical semi-arid steppe climate is approximately 20oC (68oF). These regions are usually located pole ward of the tropical wet climates; the annual temperature range increases as the variation in sun angle increases at these locations. Annual temperature ranges vary from 10oC (5.6oF) to above 20oC (11oF). Daily temperature ranges are nearly similar to the annual range of temperature.

The tropical semi-arid steppe climate denotes a semi-arid environment. To climatologists, a semi-arid environment is defined as one where the annual potential evapo-transpiration is more than half but less than the total annual precipitation. Potential evapo-transpiration is a compute of the demand for water on the explanation of plant transpiration and surface evaporation. In the tropical semi-arid steppe climate, much evaporation and plant transpiration would take place if water were available. Inadequate amounts of precipitation during the comparatively long summer droughts stress plants that require water during periods of high temperature. However, during the wet tenures of the year, ample rainfall occurs to meet the needs of the natural vegetation.

Periyar National Park The tropical semi-arid steppe climate is a transitional climate between truly wet and truly dry climates. The seasonality of rainfall is similar to that of the closest humid climate. The steppe climate found between the tropical desert and wet/dry tropical climate of the regions has a high sun wet - low sun dry seasonality to its precipitation. During the low sun period the subtropical high migrates into this region and suppresses convection. The subsiding air lowers the relative humidity making it difficult to bring air to its saturation point. During the high sun season the tropical steppe is dominated by the subtropical high. During the low sun season cyclones associated with the sub polar low and polar front usually dominate.

Some regions with tropical semi-arid steppe climate are found on the lee side of mountains. As air ascends the windward slopes, water vapour condenses and precipitation occurs. The places located on the leeward side are thus in the "rain shadow" and are usually dry.

  More Articles in Dry Climate Group
Tropical semi-arid steppe climate Tropical and sub-tropical desert climate  
(Last Updated on : 21/04/2009)
Recently Updated Articles in Geography of India
  • Indian Rivers
    Indian Rivers are very important in the lives of the native people. Most of the rivers are responsible for the prosperity of Indian civilisation.
  • Krishna River
    Krishna River is a prominent river in the southern part of India. It is one of the longest rivers that scales 1300 kilometres.
  • Himalaya Mountains
    Himalaya Mountains are the highest mountain range in Asia that separates India from the Tibetan plateau. It is known as the King of mountains.
  • Deccan Plateau
    Deccan Plateau constitutes a large number of the south Indian states and ranks the largest in India.
    E-mail this Article | Post a Comment
    Forum on Geography of India

    Free E-magazine
    Subscribe to Free
    E-Magazine on Indian Crafts
    Tropical semi-arid steppe climate - Informative & researched article on Tropical semi-arid steppe climate
    Contact Us   |   RSS Feeds
    Copyright © 2008 Jupiter Infomedia Pvt. Ltd. All rights reserved including the right to reproduce the contents in whole or in part in any form or medium without the express written permission of Jupiter Infomedia Pvt. Ltd.