i need help on " define upwelling and explain its importance"
http://oceanmotion.org/html/background/upwelling-and-downwelling.htm
Which is NOT associated with upwelling?
Certainly! Upwelling refers to the process in which deep, cold, nutrient-rich waters rise to the surface of the ocean. This movement occurs due to various factors, including wind patterns, ocean currents, and the rotation of the Earth.
Upwelling is important for several reasons:
1. Nutrient supply: The cold, deep waters brought to the surface during upwelling are rich in nutrients like nitrates and phosphates. These nutrients support the growth of phytoplankton, which are the foundation of the ocean food chain. Upwelling therefore leads to increased productivity in marine ecosystems, providing a reliable food source for various organisms.
2. Fishery production: The increased availability of nutrients leads to higher primary productivity, attracting large numbers of zooplankton and fish species to upwelling zones. These areas become highly productive fishing grounds and support some of the most productive fisheries in the world. Upwelling therefore plays a crucial role in sustaining fisheries and supporting the livelihoods of fishermen.
3. Climate regulation: Upwelling also has a significant impact on global climate regulation. When surface waters are replaced by nutrient-rich deep waters during upwelling, carbon dioxide (CO2) is transferred from the atmosphere into the ocean. This helps remove CO2 from the atmosphere, mitigating some of the effects of climate change.
To learn more about upwelling and its importance, you can refer to scientific journals, textbooks, or reliable online resources that specialize in oceanography, marine biology, or environmental science. Additionally, you can explore educational websites and videos produced by reputable organizations such as NOAA (National Oceanic and Atmospheric Administration) or academic institutions that focus on marine sciences.