Sulfur in the Stratosphere caused at least 30 years of cooling after the KPg impact
Channel: Genuine Rockstars
Date: 2022-04-12

When the asteroid that heralded the end of the dinosaurs struck the present-day Yucatan Peninsula, it could not have landed in a more unfortunate location. Because of the regional geology, the impact flung tons and tons of sulfur up into the stratosphere, where UV light altered the molecules. Geochemists Dr Aubrey Zerkle and Dr Christopher Junium tell us all about it!

For more information, read their paper here: 
https://www.pnas.org/doi/10.1073/pnas.2119194119

Credits:                             
                                                                                                                                                                                                                                                                                                                                                             Illustration of freezing dinosaur - James McKay                                                                                                                                                                                                                                                                                                                                                                                                                             
Coral reef – Hassas_Arts (pixabay)
Microbes Dsndrn – Videolar (pixabay)
Geology – Pexels (pixabay)
palaeotemperature graphs – Glen Fergus (Wikipedia)
The Geological time scale - Ray Troll
Atmosphere – Randy Russell (UCAR)
Library students – Red Charlie (unsplash)
Clouds – NOAA (pixabay)
Fog, smoke – Deg Gamulinsky (pixabay)
Troposphere - Randy Russell (UCAR)
Carbonyl Sulfide – Ben Mills (Wikipedia)
Tropopause – NOAA
Tsunami – Bechir Kaddeh
Reconstruction of freezing dinosaurs – James McKay
Brazos Spherules – Benjamin Uveges
Gypsum (Anton Maksimov (unsplash)
Mount Pinatubo (June 12, 1991) – Dave Marlow (Wikipedia)
Heatwave – Blende12 (pixabay)
Volcano LaPalma – VP68 (pixabay)
Pictures fieldwork Spain Aubrey - Aubrey,  Mark Claire, and Nick Tosca