Cote d'Ivoire with capital city YAMOUSSOUKRO is located in the northern hemisphere between the Tropic of Cancer and the equator and opens to the Atlantic Ocean in the Gulf of Guinea . The political capital is Yamoussoukro (about 120,000 inhabitants) and the economic one is Abidjan (about 1,850,000 inhabitants). Cote d'Ivoire reckons four main rivers with many tributaries :Comoe has its source in Burkina Faso and goes across the country from the North to the South crossing the Parc National de la Comoe (National Reserve of Comoe). In the North-West of Yamoussoukro the river Bandaman is formed by the meeting of the Bandaman Blanc whose source is in the North of Korhogo, and flows into the tremendous lake of Kossou. The river Sassandra formed in the North of the Parc National du Mont Sangbe (National Reserve of Mount Sanbge) by two principal tributaries, the Boa and the Tiemba, goes down to the South. The river Cavally comes from Guinea and enters Cote d'Ivoire crossing the Dan territory. Down in the South it marks the boundary with Liberia till Cap palmas on the Gulf of Guinea. Cote d'Ivoire is a transitional zone between the moist equatorial climate and the dry tropical climate. As such the country can be divided into two main zones : The South and the North. As a whole, temperatures are high and the difference between the zones is seen at the level of the hygrometry rate in the air which can be close to 100% in the South and fall at 20% in the North during Harmattan (dry winds coming from Sahara).