Tropical Atlantic

Tropical Atlantic
Name	Tropical Atlantic
Location	Atlantic Ocean
Type	Oceanic region
Countries	Brazil, Venezuela, Colombia, Panama, Costa Rica, Nicaragua, Honduras, El Salvador, Guatemala, Belize, Mexico, United States, Cuba, Haiti, Dominican Republic, Jamaica, Bahamas, Barbados, Trinidad and Tobago, Guyana, Suriname, French Guiana, Senegal, The Gambia, Guinea-Bissau, Guinea, Sierra Leone, Liberia, Côte d'Ivoire, Ghana, Togo, Benin, Nigeria, Cameroon
Basin countries	same

Tropical Atlantic The Tropical Atlantic is the tropical portion of the Atlantic Ocean bounded by continental margins of South America, Central America, North America, and the western coast of Africa, and it plays a central role in interhemispheric Atlantic Meridional Overturning Circulation dynamics, El Niño–Southern Oscillation teleconnections, and tropical cyclone development. It connects with the Caribbean Sea, Gulf of Mexico, and the eastern subtropical Atlantic via major currents such as the Gulf Stream, the North Brazil Current, and the Equatorial Current, shaping regional climates, fisheries, and navigation routes that have featured in histories like the Transatlantic slave trade and modern agreements including the Montevideo Convention and maritime law regimes such as the United Nations Convention on the Law of the Sea.

Geography and boundaries

The Tropical Atlantic extends roughly between the Tropic of Cancer and the Tropic of Capricorn, bounded westward by the eastern coasts of Mexico, United States, Cuba, and the northern coasts of South America including Venezuela and Brazil, and eastward by the western coasts of Senegal, Mauritania and the Gulf of Guinea. Major geographic features include the Lesser Antilles island arc, the Greater Antilles, the Bahamas, the Bermuda vicinity, the continental shelves off Brazil and West Africa, and insular states such as Barbados and Trinidad and Tobago that have strategic ports noted in treaties like the Treaty of Tordesillas history. Key maritime passages include the straits linking to the Caribbean Sea and the Gulf of Mexico, which have been central to routes used by explorers like Christopher Columbus and in trade networks connected to ports of Lisbon and Seville.

Climate and oceanography

Sea-surface temperatures, salinity gradients, and wind fields in the Tropical Atlantic are influenced by the Intertropical Convergence Zone, seasonal migration of the Hadley cell, and remote forcing from El Niño–Southern Oscillation and the Madden–Julian Oscillation, producing variability linked to climatic events recorded by institutions such as the National Oceanic and Atmospheric Administration and the Intergovernmental Panel on Climate Change. Oceanographic features include the westward South Equatorial Current, the northward North Brazil Current retroflections, and the Atlantic Meridional Overturning Circulation that interacts with the Gulf Stream and influences climates across Europe and West Africa. Upwelling systems off Senegal and Mauritania drive productivity monitored by research programs at the Scripps Institution of Oceanography and the Woods Hole Oceanographic Institution, and seasonal Atlantic cold tongues and warm pools modulate convective activity linked to hurricane genesis studied by the National Hurricane Center.

Marine ecosystems and biodiversity

The Tropical Atlantic hosts diverse coral reef systems associated with the Mesoamerican Barrier Reef System, reef complexes around the Bahamas and Barbados, and continental shelf fisheries along Brazil and West Africa, supporting species protected under conventions like the Convention on International Trade in Endangered Species of Wild Fauna and Flora and agreements involving organizations such as the International Union for Conservation of Nature. Biodiversity includes reef-building corals (e.g., threats to Acropora palmata), mangrove forests in Guianas, seagrass meadows near Belize and Trinidad and Tobago, and pelagic assemblages including tuna stocks targeted by fleets from Spain, Japan, and United States fleets regulated by regional fisheries management organizations like the International Commission for the Conservation of Atlantic Tunas. Endemic and charismatic fauna such as the West Indian manatee, hawksbill sea turtle, and migratory species tracked under the Convention on Migratory Species depend on habitat mosaics spanning multiple jurisdictions including Guyana and Suriname.

Tropical cyclones and weather impacts

The Tropical Atlantic is a primary breeding ground for Atlantic tropical cyclones, whose development involves interactions among sea-surface temperature anomalies, vertical wind shear modulated by the African Easterly Jet, and disturbances originating from the Saharan Air Layer. Powerful storms such as Hurricane Katrina and Hurricane Maria have highlighted vulnerability across coasts of United States, Caribbean, and Central America, provoking responses coordinated with agencies like the Federal Emergency Management Agency and humanitarian organizations including United Nations Office for the Coordination of Humanitarian Affairs. Seasonal forecasts from entities like the Colorado State University Tropical Meteorology Project and the NOAA Climate Prediction Center inform maritime safety for shipping lines such as Maersk and fisheries fleets operating under flags of Panama and Liberia.

Human activities and economic significance

Economic activities in the Tropical Atlantic include commercial fisheries, cruise tourism centered on ports like Miami and San Juan, Puerto Rico, oil and gas production offshore Brazil and the Gulf of Mexico involving companies such as Petrobras and multinational corporations, and transoceanic shipping along routes connected to ports of Rotterdam and New York City. Coastal economies depend on ecosystems providing services valued in markets and under frameworks like the World Trade Organization; historic activities included colonial trade routes of Portugal, Spain, and Britain that shaped settlement patterns in Caribbean island states and continental capitals such as Lagos and Recife.

Environmental change and conservation challenges

Climate change, ocean warming, acidification, and deoxygenation documented by the Intergovernmental Panel on Climate Change threaten coral reefs, fisheries, and coastal communities, prompting conservation efforts by NGOs like World Wildlife Fund and intergovernmental initiatives including the United Nations Environment Programme led programs. Land-based pollution, overfishing regulated (and sometimes evaded) by regional fisheries management organizations, and habitat loss from coastal development in cities such as Fortaleza and Castries exacerbate vulnerability; responses include marine protected areas established under national laws in Brazil and international cooperation via conventions such as the Convention on Biological Diversity. Adaptation and mitigation strategies involve science from institutions like the University of São Paulo and policy platforms including the Paris Agreement to address sea-level rise impacts on low-lying states such as Barbados and Bahamas.

Category:Atlantic Ocean