New measurement device: Carbon dioxide as geothermometer

For the first time it is possible to measure, simultaneously and with extreme precision, four rare molecular variants of carbon dioxide (CO2) using a novel laser instrument. As a new type of geothermometer, the laser-spectroscopy-based measurement device is significant for scientific disciplines investigating, for example, climatic conditions in Earth’s history. It was developed by a German-French research team with environmental physicists from Heidelberg University.
Source: EurekaAlert, https://www.eurekalert.org