#  ClimaTea Journal Club 

 



####  calendar\_today Date and Time 

 **April 16, 2019** 

 03:00PM - 03:00PM EDT 

####  pin\_drop Location 

 **Faculty Lounge room 409, Hoffman**  



 

 



 

 **Speaker:** Jake Seeley

 Jake will lead the discussion on the paper titled **‘Arc-continent collisions in the tropics set Earth’s climate state’** by **Macdonald et al.**  ([Attached](https://eps.harvard.edu/files/eps/files/macdonald2019.pdf))

 Jake’s blurb is below, adapted from the abstract:

 On multimillion-year time scales, Earth has alternated between warm, ice-free climates and cold, glacial climates. What causes these transitions in climate state? Macdonald et al. argue that Earth’s climate state is set primarily by the latitudinal distribution of a particular type of tectonic collision. In particular, they hypothesize that low-latitude arc-continent collisions drive global cooling by exhuming highly weatherable rocks in the warm, wet tropics, thereby increasing Earth’s potential to sequester carbon (i.e., strengthening the silicate-weathering carbon dioxide sink). The authors make their case by reconstructing the paleogeographic position of all major Phanerozoic arc-continent collisions, and comparing to the latitudinal distribution of ice sheets. This analysis reveals a strong correlation between the extent of glaciation and arc-continent collisions in the tropics.



 

 



 

 See also:- [ ClimaTea ](/type-event/climatea-lecturejournal-club)
 
 

 Share on:- [     Facebook ](#)
- [     Twitter ](#)
- [     Linkedin ](#)
 


 Save: [ Add to calendar calendar\_today ](https://climate.fas.harvard.edu/node/1426475/event-feed.ics)  Copy link link