Proxy records: Ice Cores

Ice cores are one of the most effective methods of collecting proxy records for data about past climate records. This is due to the ability of them to capture gases during the time they freeze and then can later be extracted to measure concentrations of things such as Carbon dioxide and methane. The website below explains much of this and more, as well as listing some flaws with timing of ice core data. It also gives the different regions where ice cores are collected and explains how deep and good the regions are for ice core data, going from Antarctica to the Arctic.

Link to website HERE