A study led by the University of Reading found that the amount of winter rain and snow in the western Himalayas could vary by almost 50% depending on the air pressure gradient over the Atlantic Ocean between the Azores and Iceland.

Scientists have spent decades trying to establish the causes of a link between the two regions. This new study provides important evidence that could lead to better forecasting of winter precipitation levels in India, months in advance. The results could be used to improve yields of important crops, such as wheat and barley, and to help manage vital water supplies in the country.