A last millennium temperature reconstruction using chironomids preserved in sediments of anoxic Seebergsee (Switzerland): consensus at local, regional and Central European scales

► Chironomids from two very different Swiss lakes show similar patterns of temperature changes. ► These reconstructions are similar to records at local, regional, European and northern hemispheric scales. ► The inferred temperatures were warm (+1 °C, 1900-2000 average) during the medieval climate anomaly. ► The reconstructed temperatures of the past decades are warm (+0.7 °C, 1900-2000 average). ► The chironomid assemblages since 1950 AD in both lakes are unique for the past 1000 years.