ATMS 514/ESS 535
  Ice and Climate

http://www.atmos.washington.edu/~bitz/514_2013.html

Spring 2013
T and Th 11:30-12:50  ATG 610

Instructor: Cecilia Bitz
Office ATG 502, Phone: 3-1339, email: bitz@atmos.washington.edu
Office hours by appointment

This course will cover the principles of cryosphere and climate interactions and polar climate dynamics.  Topics include glaciers, ice sheets, snow, and sea ice in the modern climate, and their role in climate change, sea level rise, the Pleistocene ice ages, and snowball Earth. Relatively simple modeling exercises will be employed to learn about climate dynamics and ice sheet and sea ice sensitivity to climate change.

The course format will be a blend of lecturing, journal article discussion, and student special topic reports. Approximately five homework assignments will be given, some using simple models (provided by the instructor).  Students will be lead discussions of journal articles in pairs. Each student will also choose an additional topic and lead a class presentation on that topic. The presentation may be based on a critique of a paper or group of papers, analysis of data, and/or a simple modeling project. The project should be summarized in an approximately 5-page written report. There will be no exams. The grade breakdown is approximately:
   Homework assignments 40%
   Journal article discussion (leading and participating) 20%
   Project (written and presentation) 40%

Prerequisite: ATMS 501, 511 or ESS 532 would be helpful, but are not required. No previous modeling experience is needed. Undergrads please contact me to discuss whether this class is appropriate for you.

Reading will be from a variety of journal articles

THE LINKS BEYOND THE CURRENT WEEK ARE FROM OLD LECTURE BELOW HERE AND MAY NOT FUNCTION

Password protected class readings

Schedule  for 2013

Week
Lectures
Lab/Exercises
Reading
1
4/2
4/4

Tu: Introduction 
Th: Heat transports and ice, discussion of Enderton and Marshall, 2009.

Required: first seven pages of Enderton and Marshall 2009 by 4.4;  Notz 2009 for 4/11;
Recommended: Section 3 of Langen and Alexeev 2007 for 4/9 (the whole paper is good, if you like math)
2
4/9
4/11

Tu: Ice-albedo Feedback, Polar Amplification, discussion of Langen and Alexeev, 2007
Th: Tipping points, irreversibility. Discuss Notz 2009


Required: for 4/18 Rose and Marshall 2009
Recommended: Rose et al 2013 Brian probably won't get to this afterall but it is a great paper
3
4/16
4/18

Tu: Guest lecture by Brian Rose: Energy balance modeling and climate's sensitivity to obliquity

Th: Part 2 Multiple equilibria of sea ice and ocean circulation by Brian Rose

HW1 due 4/25

EBM in html

EBM in matlab
Required: Joughin et al 2008 for 4/23

Recommended: Joughins and Alley, 2011
4
4/23
4/25

Tu: Kristin Poinar on ice sheets and ice stream speed up
Th: Day off

Required:
Recommended: Good idea to read Bamber_etal2009.pdf for 4/30
5
4/30
5/2
 
Tu: Ice sheet-climate feedbacks
Th:  Ice sheet-climate mass balance and simple dynamics
HW2 due 5/9

Required: Loutre 2003 for 5/7 and  Huybers & Tziperman, 2008 for 5/9

Recommended: Marshall 2006 on glaciers and climate for 5/2
6
5/7
5/9

Tu: Ice age climates
Th: Discussion of Huybers & Tzpiperman, lecture on pliocene
HW3 due 5/16


Required: Bitz and Marshall 2011 (parts about sea ice)
Thorndike et al 1992 for 5/14 p9401-9403 and fig 4, pickup again from section 4 to end.
Recommended:
7
5/14
5/16

Tu: Sea ice basics
Th: Sea ice feedbacks and the Thorndike Toy model
Final Proj. Proposals Paragraphs due 5/21 by email

Required: Martinson et al 1981 for 5/21 through section 4 and no more!

Recommended:
8
5/21
5/23

Tu: A convective model for the Weddell Sea Polynya
Th: Ice on Exoplanets

hw4 due 5/30
Required: Menou (2013) for 5/23
Recommended:

9
5/28
5/30

Tu: Arctic Atmospheric response to ice anomalies, including midlatitude weather, Arctic Paradox
Th: Antarctic atmosphere-ice interactions


Required: Thompson_etal_2011.pdf for 5/30
Recommended:
10
6/4
6/6

Tu: Permafrost, snow on land
Th: Carbon release from permafrost, Clathrates, Black Carbon



Try to read: Schuur_etal_2009.pdf (terrestrial carbon/perfafrost) OR
Dmitrendo_etal2011.pdf (undersea permafrost/methane)

Recommended:Buffett_Archer_2004.pdf (on methane hydrates)

Tu: Sudent Presentations

Turn in papers

Useful books

"Paleoclimatology" by Crowley and North
"Ice Ages: Solving the Mystery" by Imbrie and Imbrie.
"Physics of Climate" Peixoto and Oort
Pierrehumbert, R. in preparation. Climate on Earth and other planets at a rather basic and yet thought provoking level.

Suggested additional Topics
Glacierizations: Initiation of an ice sheet
Ice daming and flooding
Rapid climate change
Contribution of CO2 to ice-age climate
Oxygen isotopes in ice and ocean
Climatic effects of snow
Bedrock depression and rebound
Role of topography in onset of ice ages; mid-Pleistocene transition
Clouds in the ice age
Albedo feedbacks
Instability of West Antarctic ice sheet

Examples of previous students' projects
   Sea ice - Tony Beesely, Mark Wensman, Bill Lipscomb
   Oxygen isotopes - Kurt Cuffy, Christine Massey
   Cause of CO2 variations - Eric Steig
   Ice age ocean circulation - Robert Pincus, Von Walden
   Changes in Antarctic mass balance - Bonnie Light
   Ice sheet surface energy balance - Dave Morse
   Younger Dryas - Ken Young
   Bedrock depression and rebound - Tony Gades, Steve Fox
   Topographic changes - Jacobian, Ash Mahesh
   Topography ice age initiation - Doug Clark
   Mars polar cap - Rob Boime
   Cloud feedbacks in climate - Tracy Furutani
   Albedo Feedback - Jennifer Francis
   Initiation of an ice sheet in GCM by Milankovitch - Harry Stern
   Modeling of mass balance - Andrew Bourdreaux
   Climatic effects of snow - Donna Calhoun
   CO2 clouds - Gary Hansen
   Snowball earth - Llyd Wells
   The climate of Mars - Alison Anders
   The Younger Dryas - Jennifer Kay
   The AO and the Odden - Ignatius Rigor
   Ice and clouds - Trude Storelvmo
   Icebergs effects on the Ocean - Cecilia Peralta-Ferriz
   DO events - Hanzi Singh
   Autoregressive models of sea ice - Kyle Armour
   How snow works - Amanda
   Frazil ice - Clark Kirkman