Producing Green Fuel Ammonia in Equatorial Waters, Piping It Worldwide, and Removing Atmospheric CO2 to Return to 1960s Temperatures

Despite the numerous threats associated with global warming, a sustainable solution is yet to be found. Whereas solar and wind power generation are being adopted worldwide, challenges such as limited installation space, reduced inertia of power grids, and large-scale energy storage issues persist. These challenges can be solved by the following measures: Distribute numerous floating offshore photovoltaic power plants across the vast equatorial waters to generate sufficient electricity to meet global primary energy demand; Use that electricity to produce green hydrogen and synthesize green fuel ammonia (a substitute for fossil fuels), which is a high-energy-density hydrogen energy carrier; Transport and store it worldwide with low losses via a pipeline network; Furthermore, remove more than 3,600 Gt of CO₂eq already accumulated in the atmosphere to less than 1,100 Gt, returning to 1960s temperatures. Based on the proportional relationship between cumulative CO ₂ eq emissions and temperature rise, numerical analysis of global warming from 1850 to 2100 was performed under four scenarios. According to the results, the sooner this proposal is implemented, the lower the cost of returning to 1960s temperatures by 2100, and the lower the health damage will be. Additionally, carbon-free energy costs (unit price of electricity), including CO ₂ eq removal costs, could be lower than the current levels. However, it cannot lower already risen sea levels. Support is requested for the verification tests and practical implementation of this proposal.