A better understanding of past climate variations is the key for improved predictions of future climate. Considering the last millennium, tree-ring data are major proxies in climate reconstructions. They provide annually resolved information often combined with considerable temporal length and have moreover a wide geographical distribution. A site with very old trees is found in the French Maritime Alps. At its Mediterranean margin, these larches are able to reach an age of up to 1000 years probably belonging to the oldest larches of Europe. They are situated in a region very vulnerable to...