Scientists have strong evidence that the warming of the ocean in the last four decades is connected to the carbon dioxide released by industries, according to a wire service report. Researchers in the US compared the increase in ocean temperatures with climate models and concluded that human activity is the most probable reason. They predict that this warming will significantly affect regional water supplies in the coming years. The study details were presented at a scientific conference in Washington DC, where the team explored various scenarios to explain the oceanic changes, but none of them were sufficient. Dr Barnett stated that greenhouse warming was the key factor in accurately predicting temperature changes in the oceans, with a 95% statistical confidence. Researchers believe this is conclusive evidence that human activities are causing global warming. The team warns that climate change will have a significant impact on regional water supplies in the near future. In areas like the South American Andes and western China, accelerated glacier melting could leave millions without enough water during the summer. Dr Barnett explained that if snow melts earlier and societies are unable to capture all the water, water shortages could occur in the summer months. The Scripps researcher emphasized the importance of political leadership in order to prevent a global disaster. They expressed hope that the United States could be steered in the right direction, stressing the need to identify and address global warming-related challenges worldwide in order to effectively address them.