This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Temperature variation over Antarctica thousand years. en Variation in temperature over Antarctica from around thousand years ago to the present Source Congressional Budget Office based on Barnola Lorius Raynaud and Barkov Historical CO Record from the Vostok Ice Core and Petit and others Historical Isotopic Temperature Record from