PMIP Workshop Newsletter 5


 

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               *********************************************
               PALEOCLIMATE MODELING INTERCOMPARISON PROJECT
               *********************************************

                         Workshop letter / No. 5
                       ----------------------------
                             February 22, 1996


Dear PMIP workshop participant,

The purpose of this letter is to summarize the subprojects defined at
the October PMIP Workshop and to set up specific mailing lists through
which we can effectively communicate.  This letter is initially being
distributed only to the workshop participants, and it requires your
comments and input before being mailed to a larger group, including all
PMIP participants.

You will find enclosed:
1) the list of subprojects, as discussed during the workshop;
2) proposed mailing lists for each subproject with information on how
   to subscribe and how to use them;
3) a proposed list of primary contacts (one per AGCM), who will receive
   inquiries by subprojects concerning the details of the PMIP models
   (e.g., type of parameterizations used, treatment of land surface
   ,etc.);
4) the names, adresses and email addresses of all workshop participants.


##############################################################################
			PROPOSED SUBPROJECTS
##############################################################################

All subprojects described below were proposed during the workshop in
Collonges-la-Rouge. For some of them (tropical climates 6 kyr BP, for
example), a brief description has already been written by the
coordinators and participants are ready to begin working.  For others
(tropical climates 21 kyr BP, for example), no description nor
coordinator have been proposed so far.  The following descriptions
should serve as an adequate working draft, but we ask the coordinators
of each subproject to edit and improve these.  We would like your
revised descriptions by the Vernal Equinox (March 21 at noon) at last.  
Be sure that both the objectives and methodology are clearly stated.
All revisions should be sent to: paleo (NEW! Please check the
PMIP 'Contacts' web page).

Two approaches for analyzing the data were discussed at the workshop.
In one approach, each modeling group will be asked to carry out a
specified analysis of their model, and then the results will be
gathered and summarized by a "synthesizer".  An alternative approach
will require the "synthesizer" to process all the model output and again
summarize the results.  The second approach may be more appropriate if
all the data needed are already available as part of the PMIP data
archive. In revising the following descriptions it would be useful to 
include an indication of which approach will be followed (or describe 
some variant on these two approaches).


------------------------------------------------------------------------------
 I. Climate sensitivity
------------------------------------------------------------------------------
Coordinators: Karl Taylor, David Rind, John Mitchell

* The objective of this subproject is to estimate climate sensitivity
for paleoclimate simulations, and compare it to other climatic conditions. 

* Procedure and tasks:
1. Calculate radiative forcing due to various changes in boundary conditions
   (insolation, changes in surface albedo, greenhouse gas forcing).
2. Calculate climate sensitivity.
3. Evaluate importance of different feedbacks.
4. Compare climate sensitivity for different experiments and also to
   sensitivity to doubling of CO2.


------------------------------------------------------------------------------
 II. Tropical climates, 6 kyr BP
------------------------------------------------------------------------------
Coordinators: John Kutzbach, John Mitchell, 
              Pascale Braconnot, Nathalie de Noblet

* The primary objectives of this sub-project are to:
1. evaluate and quantify the sensitivity of Asian and African monsoons to 
  changes in insolation and CO2;
2. find out which mechanisms are robust (i.e. present in most of the models) 
  and which are not;
3. see whether we can rank the sensitivity of the monsoons according to the 
  complexity of their parameterizations.

Model-model as well as model-data comparisons will be used to achieve 
these goals.

* This subprojet will consider:
1. Diagnostics of the large scale dynamics and energetics, and relationship 
   with the regional scale (involving the study of Hadley and Walker    
   circulations, diabatic heating, position of the ITCZ, tropical waves, 
   subtropical jet, ...)
2. Regional study of monsoons: Asia and/or Africa, summer and/or winter.
   Three main points will be developed:
      * intercomparison of the simulated land-surface climatologies, and 
        comparing them with lake and pollen data;
      * study of onset, duration and intensity of the summer monsoon in 
        relation to changes in the length of the season and insolation at 
        the top of the atmosphere;
      * impact of model parameterizations, with particular emphasis on land 
        surface processes and clouds.

Very simple diagnostics (zonal/meridional means, P-E maps, runoff and
monsoon index) will be output first, to provide an overview of the
model behaviour.  Comparison with data will also be made at that point.
Some of these results will serve as a basis for the gross features to
be contributed to the 6 kyr BP overview paper.  More sophisticated
diagnostics will then be developed.


------------------------------------------------------------------------------
 III. Extra-tropics, 6 kyr BP 
------------------------------------------------------------------------------
Coordinators: Patrick Bartlein, Nathalie de Noblet

* The objective of this subproject is to study the impact of insolation 
changes on the mid-latitude large-scale circulation

* Procedure and tasks:
1. Circulation changes: planetary waves, storm tracks, surface energy and 
   moisture balance
2. Data-model comparisons


------------------------------------------------------------------------------
 IV. Extra-tropics, 21 kyr BP
------------------------------------------------------------------------------
Coordinator: Paul Valdes

* The objective of this subproject is to study the impact of the Last Glacial
Maximum boundary conditions on the simulated mid-latitude large-scale 
circulation.

* Analyses will be carried out as follows:
1. Circulation changes: planetary waves, Southern and Northern Hemisphere 
   westerlies, storm tracks.
2. Impact of sea-ice on the simulated surface fluxes. 
   Comparison of simulations with computed versus simulations with 
   prescribed SSTs.
3. Study of the simulated local circulation over ice-sheets (seasonal cycle, 
   energy balance)
4. Surface climate : model-data comparison


------------------------------------------------------------------------------
 V. Ocean forcing at the last glacial maximum
------------------------------------------------------------------------------
Coordinators: Klaus Herterich, Michael Lautenschlager, Tony Broccoli

This subproject is already divided in two parts:

IV.A. The forcing of ocean circulation during glacial times
..............................................................................
Coordinators: Klaus Herterich, Michael Lautenschlager

* The objective here is to study the simulated surface heat fluxes that
are used to drive ocean general circulation models

* Procedure and tasks:
1. U. Bremen/DKRZ will compute the vertical heat fluxes at the ocean surface 
   (annual mean), from the different models, in order to determine and 
   intercompare the meridional heat transports.
2. Obtain boundary conditions (fresh water flux, heat fluxes, wind stresses,
   surface air temperature) from the PMIP simulations needed to force ocean
   models and carry out ocean simulations.


IV.B. The problem of Q-flux in mixed-layer ocean models
..............................................................................
Coordinator: Tony Broccoli

* The objective here is to study the impact of computed SSTs on the simulated
climate of the Last Glacial maximum.

* The procedure will be to compare the different technics used, and see
what this implies for ocean heat transport.


------------------------------------------------------------------------------
 VI. Ice sheet mass balance
------------------------------------------------------------------------------
Coordinators: Dave Pollard, Gerhard Krinner, Karl Taylor

* The objective of this subproject is to study the impact of the simulated
climate changes on ice-sheets.

* Procedure and tasks:
1. Diagnostic calculations will be carried out, using all PMIP simulations,
   to study the net balance for each icesheet, in most models, for 0, 6, and 
   21 kyr.
   A rather detailed description of the different methodologies, including a
   brief questionnaire has already been sent to one member of each AGCM group
   by Dave Pollard. 
2. Global (x,y) fields of net annual sow/ice accumulation-ablation will be
   plotted for most models, to see if any "initiation" is simulated.
3. Global fields of "potential" net balance (x,y,z), necessary to drive ice 
   sheet models, will be derived and studied for some models.


------------------------------------------------------------------------------
 VII. Tropical climates, 21 kyr BP
------------------------------------------------------------------------------
Coordinator(s): ?

* The objective of this subproject is to study the impact of LGM 
boundary conditions on the simulated climates of the tropics.

* Procedure and tasks:
1. Study the simulated changes in the african and asian monsoons.  What is
   the relative impact of the different prescribed boundary conditions?
2. Compare computed SSTs to fixed SSTs (CLIMAP).
3. Model-Data comparisons.


##############################################################################
			MAILING LISTS FOR SUBPROJECTS
##############################################################################

# Mailing lists have been defined for each subproject. For those who have
  registered on each list during the workshop: you will soon get an email
  informing you that you are a "registered subscriber" and giving you
  some information on how to use the mailing list.

# All lists have been defined and will be updated (maintained) at LMCE.

# The members of each subproject will be able to send messages to all the 
  other (registered) members of the group by sending an email to:
  pmip_nameofsubproject-l@<list_is_no_more_in_use>

# The only persons allowed to send a message to a list or to retrieve 
  any related information (mails previously sent to the list and archived, 
  list of subscribers, ...) are those who have subscribed.

# If you want to join a mailing list (or remove your name from it)
  you don't already subscribe to, you will
  have to send an email to both the co-ordinator of the project and to:
  "listman@<list_is_no_more_in_use>" at LMCE.


------------------------------------------------------------------------------
 Mailing lists and subscribers
------------------------------------------------------------------------------

* Climate sensitivity
..............................................................................
- mailing list: pmip-clim-l@<list_is_no_more_in_use>
- Subscribers:
  Abe-Ouchi, Braconnot, Broccoli, Dong, Hewitt, Joussaume, Kislov, Kitoh, 
  Kutzbach, Loutre, McFarlane, Micthell, de Noblet, Oglesby, Oh, Otto-Bliesner,
  Prentice, Ramstein, Rind, Schlesinger, Sloan, Syktus, Taylor, Vettoretti, 
  Webb

* Tropical climates, 6 kyr BP
..............................................................................
- mailing list: pmip-trop6-l@<list_is_no_more_in_use>
- Subscribers: 
  Abe-Ouchi, Bartlein, Braconnot, Dong, Harrison, Hewitt, Jolly, Joussaume,
  Kislov, Kitoh, Kutzbach, Loutre, Masson, MacFarlane, Mitchell, de Noblet, Oh,
  Otto-Bliesner, Rind, Syktus, Taylor, Valdes, Vettoretti, Webb

* Extra-tropics, 6 kyr BP
..............................................................................
- mailing list: pmip-hilat6-l@<list_is_no_more_in_use>
- Subscribers: 
  Abe-Ouchi, Bartlein, Guiot, Harrison, Hewitt, Joussaume, Kislov, Kitoh, 
  Krinner, Kutzbach, Masson, McFarlane, de Noblet, Oh, Pollard, Rind, Syktus, 
  Taylor, Valdes, Vettoretti

* Extra-tropics, 21 kyr BP
..............................................................................
- mailing list: pmip-hilat21-l@<list_is_no_more_in_use>
- Subscribers:
  Abe-Ouchi, Bartlein, Guiot, Harrison, Hewitt, Joussaume, Kislov, Kitoh, 
  Krinner, Kutzbach, Masson, Oh, Otto-Bliesner, Ramstein, Rind, Sloan, 
  Syktus, Taylor, Valdes

* Ocean forcing
..............................................................................
- mailing list: pmip-ocean-l@<list_is_no_more_in_use>
- Subscribers:
  Abe-Ouchi, Braconnot, Dong, Herterich, Hewitt, Joussaume, Kitoh, Kutzbach, 
  Lautenschlager, McFarlane, Oglesby, Oh, Otto-Bliesner, Pollard, Prentice, 
  Ramstein, Rind, Schlesinger, Sloan, Syktus, Taylor, Valdes, Vettoretti, Webb

* Ice-sheet mass balance
..............................................................................
- mailing list: pmip-ice-l@<list_is_no_more_in_use>
- Subscribers:
  Abe-Ouchi, Broccoli, Dong, Herterich, Hewitt, Joussaume, Kislov, Kitoh, 
  Krinner, Kutzbach, Loutre, Micthell, Oglesby, Oh, Pollard, Ramstein, Rind, 
  Schlesinger, Sloan, Syktus, Taylor, Valdes, Verbitsky

* Tropical climates, 21 kyr BP
..............................................................................
- mailing list: pmip-trop21-l@<list_is_no_more_in_use>
- Subscribers:
  Abe-Ouchi, Braconnot, Broccoli, Dong, Harrison, Hewitt, Jolly, Joussaume,
  Kitoh, Kutzbach, Masson, Mitchell, Oh, Otto-Bliesner, Pollard, Prentice, 
  Ramstein, Rind, Sloan, Syktus, Taylor, Valdes, Webb


##############################################################################
		PROPOSED LIST OF CORRESPONDENT FOR EACH AGCM
##############################################################################

The following list is preliminary and requires the approval of all of
you, especially those who are quoted below, before a specific mailing list,
similar to the ones described above, is assigned to it for convenience.  
It should be used only when specific information is required regarding 
the parameterizations developed in each AGCM.  
The correspondents are asked to forward the
request to any member of their scientific team he/she thinks is the
most appropriate to answer the question.  If we do not receive your
agreement/disagreement within the next 2/3 weeks, we will assume you
approve our choice.
 

*        NAME		*	MODEL
*************************************************
*	Kutzbach	*	CCM2
*	Pollard         *	Genesis 2
*	Taylor          *	Genesis / LLNL
*	Broccoli        *	GFDL
*	Rind            *	GISS II
*	Schlesinger     *	UI model
*	McFarlane       *	CCC
*	Hewitt          *	UKMO
*	Valdes          *	UGAMP
*	Joussaume       *	LMD
*	Herterich       *	ECHAM
*	Kitoh           *	MRI II
*	Oh              *	YONU
*	Abe-Ouchi       *	CCSR / NIES
*	McAvaney        *	BMRC 3.4
*	Budd            *	MUGCM
*	Syktus          *	CSIRO 4.6
*	Loutre          *	2-D LLNL
*	Kislov          *	Moscow
*************************************************



##############################################################################
			LIST OF THE WORKSHOP PARTICIPANTS
##############################################################################

LMCE Team:		Laboratoire de Modelisation
			du Climat et de l´Environnement
                        D.S.M. / Orme des Merisiers / Bat. 709
                        C.E. Saclay
                        91191 Gif-sur-Yvette cedex
                        FRANCE
		Tel.:   (33) 1 69.08.77.11
		Fax.:   (33) 1 69.08.77.16
                email:  pmipweb@lsce.ipsl.fr
			* BRACONNOT Pascale
			* JOUSSAUME Sylvie
			* MASSON Valerie
			* de NOBLET Nathalie
			* RAMSTEIN Gilles

ABE-OUCHI Ayako		Center for Climate System Research (CCSR)
			University of Tokyo
			4-6-1 Komaba, Meguro-ku
			Tokyo, 153
			JAPAN
		Tel.:	(81) 3 5453.3972
		Fax.:	(81) 3 5453.3964
		email:	abeouchi@ccsr.u-tokyo.ac.jp

BARTLEIN Patrick	Department of Geography
			University of Oregon
			Eugene, Oregon 97403-1251
			USA
		Tel.:	1 (503) 346.4967
		Fax.:	1 (503) 346.2067
		email:	bartlein@oregon.uoregon.edu

BROCCOLI Anthony J.	NOAA / Geophysical Fluid Dynamics Laboratory
			Princeton University
			P.O. Box 308
			Princeton, NJ 08542
			USA
		Tel.:	1 (609) 452.6671
		Fax.:	1 (609) 987.5063
		email:	ajb@gfdl.gov

DONG Buwen		Department of Meteorology
			University of Reading
			2 Earley Gate
			Whiteknigts, P.O. Box 329
			Reading RG6 2AU
			UNITED KINGDOM
		Tel.:	(44) 734 87.5123 (ext. 4235)
		Fax.:	(44) 734 35.2604
		email:	swsdong@met.reading.ac.uk

GUIOT Joel		Laboratoire de Botanique Historique et de Palynologie
			Boite 451
			Faculte de Saint-Jerome
			13397 Marseille
			FRANCE
		Tel.:	(33) 91.28.80.11
		Fax.:	(33) 91.28.86.68
		email:	guiot@frmop22.cnusc.fr

HARRISON Sandy P.	Department of Physical Geography
			Solvegatan 13
			S-223 62 Lund
			SWEDEN
		Tel.dom: (46) 415.222.48
		Tel.bur: (46) 46 222.9773
		Fax.dom: (46) 415.220.31
		email:	lakes@dungbeatle.planteco.lu.se

HERTERICH Klaus		Universitat Bremen
			Fachbereich 5 - geowissenschaften
			Postfach 330440
			28334 Bremen
			GERMANY
		Tel.:	(49) 421 218.47.23
		Fax.:	(49) 421 218.70.40
		email:	herterich@palmod.uni-bremen.de

HEWITT Chris		Room H304, Hadley Centre
			Meteorological Office
			London Road
			Bracknell
			Berkshire RG12 2SY
			UNITED KINGDOM
		Tel.:	(44) 344 85.4520
		Fax.:	(44) 344 85.4898
		email:	cdhewitt@email.meto.govt.uk

JOLLY Dominique		Global Systems Group 
			Department of Ecology 
			Ecology Building, Lund University
			Solvegatan 37 
			S-663 22 Lund
			SWEDEN
		Tel.:	(46) 46 10.31.32
		Fax.:	(46) 46 10.44.23
		email:	djolly@dungbeatle.planteco.lu.se

KISLOV Alexandre	Prof., Doc.Hon.
			Department of meteorology and climatology
			Geographical faculty of Moscow State University
			senior scientist of Institute of Geography of Moscow
			119899,Moscow, lenin Gory
			RUSSIA
		Tel.:
		Fax.:	095 9328836
		email:	kislov@gis.geogr.msu.su

KITOH Akio		Climate Research Department
			Meteorological Research Institute
			Nagamine 1-1, Tsukuba
			Ibaraki
			305 JAPAN
		Tel.:	(81) 298 53.8594
		Fax.:	(81) 298 55.2552
		email:	kitoh@mri-jma.go.jp

KRINNER Gerhard		LGGE - CNRS
                        54 Rue Moliere, DU BP 96
                        F-38402 Saint Martin d'Heres Cedex
                        FRANCE
                Tel.:   (33) 76.82.42.64
                Fax.:   (33) 76.82.42.01
		email.:	gerhard@glaciog.grenet.fr

KUTZBACH John E.	Director, Center for Climatic Research
			University of Wisconsin
			1225 West Dayton Street
			Madison, WI 53706
			USA
		Tel.:	1 (608) 262.2839
		Fax.:	1 (608) 262.5964
		email:	jekutzba@facstaff.wisc.edu

LAUTENSCHLAGER Michael	Deutsches Klimarechenzentrum GmbH
			Abt. Modellbetreuung
			Bundesstrasse 55
			D-2000 Hamburg 13
			GERMANY
		Tel.:	(49) 40 411.73.297
		Fax.:	(49) 40 411.73.270
		email:	lautenschlager@dkrz.d400.de

LOUTRE Marie-Francoise	Institut d'Astronomie et de Geophysique G. Lemaitre
                        Universite Catholique de Louvain
                        2 Chemin du Cyclotron
                        B-1348 Louvain-la-Neuve
                        BELGIUM
                Tel.:   (32) 10 47.3297 (or: 47.3299)
                Fax.:   (32) 10 47.4722
                email:  loutre@astr.ucl.ac.be

McFARLANE Norman A.	Canadian Center for Climate Research
			Atmospheric Environment Service
			University of Victoria
			3964 Gordon Head Road
			Victoria, BC V8W 2Y2
			CANADA
		Tel.:	(604) 363.8227
		Fax.:	(604) 363.8247
		email:	nmcfarlane@uvic.bc.doe.ca

MITCHELL John F.	Meteorological Office
			London Road
			Bracknell
			Berkshire RG12 2SZ
			UNITED KINGDOM
		Tel.:	(44) 344 85.6613
		Fax.:	(44) 344 85.6912
		email:	jfbmitchell@email.meto.govt.uk

OGLESBY Robert J.	Department of Earth and Atmospheric Sciences
			Purdue University
			West Lafayette, IN 47907
			USA
		Tel.:	1 (317) 494.9531
		Fax.:	1 (317) 496.1210
		email:	oglesby@spring.atms.purdue.edu

OH Jai-Ho		Forecast Research laboratory
			Meteorological Research Institute
			#2, Waryong-Dong, Chongno-Gu,
			Seoul 110-360
			KOREA
		Tel.:	(82) 2 765.7016
		Fax.:	(82) 2 351.4607
		email:	jho@iris.mri.re.kr

OTTO-BLIESNER		National Center for Atmospheric Research
                        P.O. Box 3000
                        Boulder, CO 80307
                        USA
		Tel.:	1 (303) 497.1723
		Fax.:	1 (303) 497.1348
		email:	ottobli@ncar.ucar.edu

POLLARD Dave		National Center for Atmospheric Research
                        P.O. Box 3000
                        Boulder, CO 80307
                        USA
                Tel.:   1 (303) 497.1344
                Fax.:   1 (303) 497.1348
                email:  pollard@ncar.ucar.edu

PRENTICE Colin		Global Systems Group 
			Department of Ecology 
			Ecology Building, Lund University
			Solvegatan 37 
			S-663 22 Lund
			SWEDEN
		Tel.dom: (46) 41 52.22.48
		Tel.bur: (46) 46 10.41.76
		Fax.dom: (46) 41 52.20.31
		Fax.bur: (46) 46 10.44.23
		email:	colin@dungbeatle.planteco.lu.se

RIND David		Goddard Institute for Space Studies / NASA
			2880 Broadway avenue
			New York, NY 10025
			USA
		Tel.:	1 (212) 678.5593
		Fax.:	1 (212) 678.5552
		email:	cddhr@giss.nasa.gov

SCHLESINGER Michael	Department of Atmospheric Sciences
			University of Illinois @ Urbana-Champaign
			105 South Gregory Avenue
			Urbana, IL 61801
			USA
		Tel.:	1 (217) 333.2192
		Fax.:	1 (217) 244.4393
		email:	schlesin@crg50.atmos.uiuc.edu
			schlesin@uiatma.atmos.uiuc.edu

SLOAN Lisa		Institute of Marine Sciences
			University of California
			Santa Cruz, CA 95064
			USA
		Tel.:	1 (408) 459.3693
		Fax.:	
		email:	lcsloan@rupture.ucsc.edu

SYKTUS Jozef I.		CSIRO Division of Atmospheric Research
			Private Bag No. 1
			Mordialloc, Victoria 3195
			AUSTRALIA
		Tel.:	(61) 3 586.7548
		Fax.:	(61) 3 586.7600
		email:	jis@dar.csiro.au

TAYLOR Karl E.		Lawrence Livermore National Laboratory
			P.O. Box 808, L-264
			Livermore, CA 94550
			USA
		Tel.:	1 (510) 423.3623
		Fax.:	1 (510) 422.7675
		email:	taylor13 (NEW! Please check the PMIP 'Contacts' web page)

VALDES Paul		Department of Meteorology
			University of Reading
			2 Earley Gate
			Whiteknigts, P.O. Box 329
			Reading RG6 2AU
			UNITED KINGDOM
		Tel.:	(44) 734 87.5123 (ext. 4235)
		Fax.:	(44) 734 35.2604
		email:	swsvalde@swssner1.reading.ac.uk

VERBITSKY Mikhail	Department of Geology & Geophysics
			Yale University
			P.O. Box 6666
			New Haven, CT 06511
			USA
		Tel.:	1 (203) 432.3159
		Fax.:	1 (203) 432.3134
		email:	verb@milne.geology.yale.edu

VETTORETTI		Canadian Center for Climate Research
			Atmospheric Environment Service
			University of Victoria
			3964 Gordon Head Road
			Victoria, BC V8W 2Y2
			CANADA
		Fax.:	(604) 363.8247
		email:	guido@chinook.physics.utoronto.ca

WEBB Robert S.		NOAA Paleoclimatology Program
               		National Geophysical Data Center
			325 Broadway
			Boulder, CO 80303
			USA
		Tel.:	1 (303) 497.6967
		Fax.:	1 (303) 497.6513
		email:	rsw@ngdc.noaa.gov



 

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