It spans the 120-150th degree of the Tropical zodiac, between 125. 25 and 152. 75 degree of celestial longitude, which the Sun transits this area on average between July 23 to August 22 each year.

It spans the 330-360th degree of the zodiac, between 332. 75 and 360 degree of celestial longitude, which in the Tropical zodiac the Sun transits this area on average between February 19 to March 20 each year.

The origin of Tropical Storm Barbara can be traced to a tropical wave that moved off the coast of Africa on June 1.

The term " tropical " refers to both the geographic origin of these systems, which form often in tropical regions of the globe, and their formation in Maritime Tropical air masses.

Tropical grasslands are known as savanna in Australia, whereas in southern Africa it is known as certain kinds of veld ( from Afrikaans ).

Northern Côte d ' Ivoire is part of the West Sudanian Savanna ecoregion of the Tropical and subtropical grasslands, savannas, and shrublands biome.

Tropical deforestation is responsible for approximately 20 % of world greenhouse gas emissions.

The International Tropical Timber Agreement ( ITTA, 1983 ) is an agreement to provide an effective framework for cooperation between tropical timber producers and consumers and to encourage the development of national policies aimed at sustainable utilization and conservation of tropical forests and their genetic resources.

The Tropical rainforest climate or the Equatorial monsoon, designated by the Köppen climate classification as " Af ", is found in the southern part of the country.

The Tropical rainforest climate has a very small temperature range. The temperature ranges are almost constant throughout the year, for example, Warri town in the southern part of Nigeria, records a maximum of for its hottest month while its lowest temperature is in its coldest month.

The Tropical savanna climate or Tropical wet and dry climate, is extensive in area and covers most of Western Nigeria to central Nigeria beginning from the Tropical rainforest climate boundary in southern Nigeria to the central part of Nigeria, where it exerts enormous influence on the region.

The Sahel Climate or Tropical dry climate, is the predominant climate type in the northern part of Nigeria.

The dry season is accompanied by a dust laden airmass from the Sahara Desert, locally known as Harmattan, or by its main name, The Tropical Continental ( CT ) airmass, while the rainy season is heavily influenced by an airmass originating from the south atlantic ocean, locally known as the south west wind, or by its main name, The Tropical Maritime ( MT ) airmass.

The Tropical Maritime Airmass ( MT ) is responsible for Nigeria's rainy season.

The Tropical continental airmass ( CT ) from the Sahara Desert in the northern part of West Africa, is weakened due to the overheating of the land surface in west Africa and Nigeria at this time.

This transfer of heat in the Tropical continental airmass ( CT ) in turn, causes the wind to expand and become lighter as this is the normal behaviour for winds moving above intensely heated grounds.

The Tropical Maritime Airmass is a warm humid and unstable trade wind due to its warmth.

The Tropical Continental Airmass ( CT ) locally known as the harmattan, is a wind originating from North Africa which crosses the Sahara Desert into west Africa to Nigeria.

The Tropical continental airmass is dusty and creates a haze within the atmosphere of west Africa and Nigeria when it predominates.

The climate of China is extremely diverse ; Tropical in the south to subarctic in the north.

China is a party to the Antarctic-Environmental Protocol, the Antarctic Treaty, the Convention on Biological Diversity, the Climate Change treaty, the United Nations Convention to Combat Desertification, the Endangered Species treaty, the Hazardous Wastes treaty, the Law of the Sea, the International Tropical Timber Agreements of 1983 and 1994, the International Convention for the Regulation of Whaling, and agreements on Marine Dumping, Ozone Layer Protection, Ship Pollution, and Wetlands protection.

Panama also is one of the founding members of the Union of Banana Exporting Countries and belongs to the Inter-American Tropical Tuna Commission.

Congo is party to the international agreements on Biodiversity, Climate Change, Desertification, Endangered Species, Ozone Layer Protection, Tropical Timber 83, Tropical Timber 94, Wetlands.

For management purposes, the U. S. population is divided into three groups: the Eastern Tropical Pacific stock ( 11, 000 – 13, 000 animals ), Hawaiian stock ( 350 – 500 ), and Northern Gulf of Mexico stock ( 25 – 40 ).

The vegetation of the Nicobars is typically divided into the coastal mangrove forests and the interior evergreen and deciduous Tropical and subtropical moist broadleaf forests.

Tropical rainforests fragmented and then were eventually devastated by climate change.

Administered by Li Guoqiao at the Tropical Medicine Institute, the program relies on hybrid Artemisia annua of hybrid ancestry, which was used for a drug regimen by which all residents of the island, whether or not visibly ill, took two doses at a 40-day interval.

: Tropical ; moderated by trade winds

* Tropical Storm Frank ( disambiguation ), a typhoon name assigned by PAGASA in the Philippines

Tropical dry forests are characteristic of areas in the tropics affected by seasonal drought.

: Tropical marine ; generally warm and humid, moderated by northeast trade winds ; dry season from January to June, wet season from July to December ; little seasonal temperature variation.

: Tropical tempered by trade winds ; moderately high humidity

In October 2009, U. S. Marine Corps HMMWVs in the Philippines deliver family food packs to communities affected by Tropical Storm Ketsana.

International Tropical Timber Agreement, 1994 ( ITTA, 1994 ) was drafted to ensure that by the year 2000 exports of tropical timber originated from sustainably managed sources and to establish a fund to assist tropical timber producers in obtaining the resources necessary to reach this objective.

It replaced the International Tropical Timber Agreement, 1983, and was superseded by the International Tropical Timber Agreement, 2006.

The last hurricane was category-one Hurricane Earl in September 2010, and the last tropical storm was Tropical Storm Noel in 2007 ( downgraded from Hurricane Noel by the time the storm reached Nova Scotia ).

Tropical ; ameliorated by northeast trade winds

During the dominance of the Tropical Maritime Airmass ( MT ) in the rainy season of Nigeria, mornings are bright and sunny, the sun's heating of the land in the mornings and afternoons sets up convectional currents, these currents rise vertically and cumulonimbus clouds are formed, by afternoons to evenings, torrential downpour follows.

All four Circle_of_latitude # Major_circles_of_latitude | major circles of latitude that are defined by the Earth's tilt ( both Circle_of_latitude # Tropical_Circles | Tropical Circles and both Circle_of_latitude # Polar_Circles | Polar Circles ) will shift correspondingly.

Tropical regions ( between the Tropic of Cancer and the equator ) are generally hot all year round and tend to experience a rainy season during the summer months, and a dry season during the winter months.

As a result ( approximately, and on average ) the Tropical Circles are drifting towards the equator ( and the Polar Circles towards the poles ) by 15 metres per year, and the area of the Tropics is decreasing by 1100 square km per year.

Tropical rainforest climates are typically found near the equator, so Santos featuring this type of climate is an exceptional situation.

Tropical waves are generally carried westward by the prevailing easterly winds along the tropics and subtropics near the equator.

During late November, a westerly disturbance developed into twin troughs on opposite sides of the equator ; the one in the Southern Hemisphere ultimately developed into Tropical Cyclone Pam, while the one in the Northern Hemisphere formed into an area of convection about 2000 km ( 1240 mi ) southwest of Hawaii.

Tropical sprue is largely limited to within about 30 degrees north and south of the equator.

# " Tropical Antarctica " ( 100 million years ' time, in an Antarctica which is now on the equator );