Happy birthday to #geochemist Charles David Keeling (1928 - 2005) whose decades long observations of CO2 in air samples from Mauna Loa Observatory were some of the 1st direct data to show the human contribution to greenhouse effect & global warming. The 'Keeling Curve' (in copper & red) shows both the seasonal variations (the wiggles) & the strong upward trend with time as the greenhouse gas built up in the atmosphere. 🧵1/
Become my colleague at the University of Groningen! 🌏👽🔭🖥️
The Kapteyn Astronomical Institute is searching for two tenure-track assistant professors. The exoplanet position is focused on rocky/low-mass exoplanet atmospheres, from either an observational or theoretical perspective. Please share! 🤗
Featuring phyllosilicates (clays) at Mawrth Vallis, seen here as light-toned outcrops, that could form during warm and wet intermittent periods in a generally cold early Mars.
Image: Christoph Gross, Freie Universität Berlin.
Cover Design: Bethany Vukomanovic