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You are here: Home / Extras / Glossary / Climate Proxy ‘Proxy’ ou marqueur climatique

Climate Proxy ‘Proxy’ ou marqueur climatique

28 Nov 2004 by group

Climate ‘proxies’ are sources of climate information from natural archives such as tree rings, ice cores, corals, lake and ocean sediments, tree pollen, or human archives such as historical records or diaries, which can be used to estimate climate conditions prior to the modern period (e.g. mid 19th century to date) during which widespread instrumental measurements are available. Proxy indicators typically must be calibrated against modern instrumental information to yield a quantitative reconstruction of past climate.

Les marqueurs ou ‘proxis’ climatiques sont des sources d’information sur le climat provenant d’archives naturelles comme les cernes de croissance des arbres, les carottes glaciaires, les coraux, les sédiments lacustres et océaniques, les pollens ; ou d’archives humaines comme les enregistrements historiques et journaux, qui peuvent etre utilisés pour estimer les conditions climatiques avant la période moderne (environ le milieu du 19eme siecle), période pendant laquelle des mesures instrumentales sont largement disponibles. Les ‘proxis’ doivent etre calibrés sur les données instrumentales modernes pour fournir une reconstruction quantitative du climat.

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