The flooding that has hit southern Germany over recent days can be attributed to a low pressure zone over the northern Mediterranean, experts at the Munich Re reinsurer said on Monday. Damage caused by cyclones known as Genoa lows or Vb cyclones are on the rise, according to data collected by the reinsurer, the world’s largest. “They suck up water over the Mediterranean Sea and then move from northern Italy in the direction of the Balkans,” Munich Re head climatologist Ernst Rauch said. “Then the exceptional nature of these Vb weather conditions is revealed. The extremely moist cloud vortex tu…