Increasing levels of debris in the world’s oceans are also having a major environmental and economic impact. Ocean heat is at record levels, causing widespread marine heatwaves, threatening its rich eco-systems and killing coral reefs around the world. The ocean has also absorbed more than 90% of the excess heat in the climate system. The ocean absorbs around 23 per cent of annual CO2 emissions generated by human activity and helps mitigate the impacts of climate change. Despite the critical importance of conserving oceans, decades of irresponsible exploitation have led to an alarming level of degradation. Oceans and fisheries continue to support the global population’s economic, social and environmental needs. It is the world’s largest ecosystem, home to nearly a million known species and containing vast untapped potential for scientific discovery. The ocean is our planet’s life support and regulate the global climate system. Current efforts to protect are not yet meeting the urgent need to safeguard this vast, yet fragile, resource. This includes increasing funding for ocean science, intensifying conservation efforts, and urgently turning the tide on climate change to safeguard the planet’s largest ecosystem. Ocean acidification threatens the survival of marine life, disrupts the food web, and undermines vital services provided by the ocean and our own food security.Ĭareful management of this essential global resource is a key feature of a sustainable future. Plastic is the most harmful type of ocean pollution.Ĭurrently, the ocean’s average pH is 8.1 which is about 30 per cent more acidic than in pre- industrial times. Worryingly, marine pollution is reaching extreme levels, with over 17 million metric tons clogging the ocean in 2021, a figure set to double or triple by 2040. They also act as the planet’s greatest carbon sink. They provide key natural resources including food, medicines, biofuels and other products help with the breakdown and removal of waste and pollution and their coastal ecosystems act as buffers to reduce damage from storms. Covering three-quarters of the Earth’s surface, contain 97 percent of the Earth’s water, and represent 99 percent of the living space on the planet by volume. The Ocean is intrinsic to our life on earth. Healthy oceans and seas are essential to human existence and life on Earth. The animations are made from the R&F results with a series of Matlab scripts and batch files.Goal 14 is about conserving and sustainably using the oceans, seas and marine resources. Fenton (1988) "The numerical solution of steady water wave problems". The wave physics are computed with the Rienecker & Fenton (R&F) streamfunction theory for a computer code to compute these see: J.D. Observe that the wave period, experienced by a fluid particle near the free surface, is different from the wave period at a fixed horizontal position (as indicated by the light-blue circles). In the case shown here, the mean Eulerian horizontal velocity below the wave trough is zero. The white dots are fluid particles, also followed in time. The light-blue line gives the path of these particles, and the light-blue circles the particle position after each wave period. The red circles are the present positions of massless particles, moving with the flow velocity. The ratio of wave height to wavelength is H/λ=0.092. English: Stokes drift in deep water waves, with a wave length of about twice the water depth.
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