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search algorithm to fill in SST data from the nearest available sea points, which led to unrealistically sharp SST gradients. To remedy this, we applied inversedistance-weighted (IDW) interpolation (with power parameter, p=2) to smoothly fill in the missing SSTs for each region before the ancillary

to 5cm of lying snow recorded across parts of Oxfordshire, Hampshire and Berkshire. Wintry conditions continued through March across Scotland's mountains with extensive snow cover and blizzards at times at higher elevations, and a northerly incursion in late April brought some sharp frosts and further