The extraordinary weather patterns of 2010 have contributed to wines that are robust, concentrated and acidic – and 'totally different' to the 2009s, Bordeaux negociant Bill Blatch says. In his comprehensive weather report for 2010, Blatch says the vintage’s saving grace – the high acidity of the grapes – was achieved by the cooler weather in August and September, and the cooler autumn. The vintage’s extraordinary concentration, with tannins 50-70% higher than 2009 and acidity levels at 4.5 grams per litre compared with 3.5g/l, is the result of an extremely dry summer.