Contact Info

Lamont-Doherty Earth Observatory

Ocean and Climate Physics

201C Oceanography

61 Route 9W - PO Box 1000

Palisades, NY 10964-8000 USA
Phone: (845) 365-8321

Fax: (845) 365-8157



AGU Fall Meeting 2015

I am a co-author on two oral presentations at the AGU Fall meeting this year - check us out!

Wednesday, Oct. 16th, 1:55-2:10pm (Moscone West 3006):

Dr. Yutian Wu (Purdue) will be presenting our work on the "Response of the Northern Hemisphere Midlatitude Circulation to Arctic Amplification in a Simple Atmospheric General Circulation Model"

Friday, Oct. 18th, 9:28-9:40am (Moscone West 3008)

I will be presenting my work with Lorenzo Polvani on the "Spatial Patterns of Antarctic Surface Temperature Trends in the Context of Natural Variability: Lessons from the CMIP5 Models"


AGU Fall Meeting 2014 - Session Announcement

Dear colleagues,

We invite abstract submissions to the session “Decadal-to-Multidecadal
Climate Variability and Change over Antarctica and the Southern Ocean”
at the AGU Fall meeting 2014 in San Francisco (15-19 December 2014):

Session ID#: 2656 - Decadal-to-Multidecadal Climate Variability and
Change over Antarctica and the Southern Ocean

Session Description:
The Antarctic and Southern Ocean region serves as a key indicator and
regulator of anthropogenic climate change. Detection and attribution of
climate change in this region, however, has proven difficult due to
sparse observations, well-known model biases in simulating important
aspects of the climate, and large internal variability that may mask the
response to external forcing. This session aims to better characterize
and understand climate variability and change over Antarctica and the
Southern Ocean on decadal-to-multidecadal timescales. Both observational
and modeling studies are welcome, with preference given to studies that
emphasize the interactions between atmospheric processes (e.g.,
radiative forcings/feedbacks, jet shifts) and changes occurring at the
surface (e.g., surface temperature, sea ice changes). Areas of
particular interest include: novel ways of analyzing/interpreting
observations; model biases and their implications for near-term
predictions/projections; and internal variability (including
teleconnections with lower latitudes) and its importance relative to
greenhouse gas and stratospheric ozone forcing.

Invited speakers (confirmed):
Kyle Armour, MIT
Ian Eisenman, Scripps Institution of Oceanography
Jennifer Kay, University of Colorado at Boulder
David Schneider, NCAR

The abstract submission deadline is Wednesday 6th August 2014. We look
forward to seeing you in San Francisco!


Michael Previdi, Karen L. Smith and Kevin M. Grise (Conveners)
Lamont-Doherty Earth Observatory of Columbia University
Palisades, NY, USA


AGU Fall Meeting 2012

Just got back from the AGU Fall Meeting in San Francisco. What a stimulating week! I co-convened two great sessions and presented two posters on my recent work. It was really nice to catch up with colleagues and friends and to meet many new people.

Looking forward to next year!


- Karen


Hurricane Sandy

It's aroud 3:30 pm on Monday, October 29th and Hurricane Sandy is blowing steadily outside our apartment walls. We expect the worst to pass over us tonight.

This storm has been dubbed "Frankenstorm" because it is a hybrid storm consisting of Hurricane Sandy travelling northward from the Carribean and an extratropical storm system travelling southeastward from Canada. The two systems are colliding just south of the city of New York. The blocking high over Greenland, characteristic of the negative phase of the North Atlantic Oscillation, is preventing Sandy from taking a more typical hurricane trajectory out to sea.

The media has been comparing Hurricane Sandy to the "Long Island Express", a category 3 hurricane that hit Long Island, New York and New England in 1938 (

Here is a link that shows the progress of the storm via satellite imagery:

Here is another link from the National Hurricane Center showing model forecasts:

- Karen




QOS 2012

Last week I attended the Quadrennial Ozone Symposium in Toronto, Ontario, Canada. I presented my recent modelling work on the connection between trends in stratospheric ozone and trends in Antarctic sea ice.

It was great to be back in Toronto!


- Karen