Mar
30
Thu
Thursday Faculty Lunches @ 54-915
Mar 30 @ 4:00 pm – 5:30 pm
Mar
31
Fri
NO GLS @ 54-915
Mar 31 @ 4:30 pm – 5:30 pm

The GLS is open to all EAPS Graduate Students, Researchers and Postdocs

Graduate Lecture Series @ 54-915
Mar 31 @ 8:30 pm – 9:30 pm

The GLS is open to all EAPS Graduate Students, Researchers and Postdocs

Apr
3
Mon
PAOC Colloquium – Susan Solomon (MIT)
Apr 3 @ 12:00 pm – 1:00 pm

Title: Monsoon circulations and tropical heterogeneous chlorine chemistry in the stratosphere

Abstract: This seminar presents novel findings that expand the range of latitudes over which heterogeneous chemistry operates in the stratosphere. It has long been thought that heterogeneous chlorine chemistry would only be important in the Antarctic and Arctic. Our new work shows that tropical heterogeneous chemistry is also important. Transport processes associated with the summer monsoons bring increased abundances of hydrochloric acid into contact with liquid sulfate aerosols in the cold tropical lowermost stratosphere, leading to heterogeneous chemical activation of chlorine species. The calculations indicate that the spatial and seasonal distributions of chlorine monoxide and chlorine nitrate near the monsoon regions of the northern hemisphere tropical and subtropical lowermost stratosphere could provide indicators of heterogeneous chlorine processing. In the model, these processes impact the local ozone budget and decrease ozone abundances, implying a chemical contribution to longer-term northern tropical ozone profile changes at 16-19 km.

PAOC Colloquium
Apr 3 @ 4:00 pm – 5:00 pm
Apr
4
Tue
Special Seminar – Katherine de Kleer @ 54-915
Apr 4 @ 4:00 pm – 5:00 pm

Katherine de Kleer, Graduate Student, University of California, at Berkeley

About the Speaker: I am a fifth-year graduate student and PhD candidate in the Astronomy Department at the University of California, Berkeley. I work with Imke de Pater, and my research focuses on planetary atmospheres and volcanism in the Solar System based on ground-based near-infrared and millimeter imaging and spectroscopy.

EVENT WEBSITE

Seminar at 4PM in room 54-915 | Reception to follow

Questions? email provaire@mit.edu

Apr
5
Wed
DLS – Anat Shahar, Carnegie Institution of Washington @ 54-923
Apr 5 @ 4:00 pm – 5:00 pm

EAPS Department Lectures (DLS) are weekly term-time talks given by leading thinkers across the earth, atmospheric and planetary sciences. Lectures take place in MIT Building 54 room 915 at 3:45 pm weekly on Wednesday afternoons unless otherwise noted.

EVENT WEBSITE

Apr
6
Thu
Thursday Faculty Lunches – Andrew Babbin @ 54-915
Apr 6 @ 12:00 pm – 1:30 pm
Special Seminar – Wenyaun Fan @ 54-209
Apr 6 @ 4:00 pm – 5:00 pm

Wenyaun Fan
Research Assistant
Institute of Geophysics and Planetary Physics
Scripps Institution of Oceanography, UC San Diego

More info coming soon…

EVENT WEBSITE

Thursday Faculty Lunches @ 54-915
Apr 6 @ 4:00 pm – 5:30 pm