NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The PMIP4 Contribution to CMIP6-Part 4: Scientific Objectives and Experimental Design of the PMIP4-CMIP6 Last Glacial Maximum Experiments and PMIP4 Sensitivity ExperimentsThe Last Glacial Maximum (LGM, 21,000 years ago) is one of the suite of paleoclimate simulations included in the current phase of the Coupled Model Intercomparison Project (CMIP6). It is an interval when insolation was similar to the present, but global ice volume was at a maximum, eustatic sea level was at or close to a minimum, greenhouse gas concentrations were lower, atmospheric aerosol loadings were higher than today, and vegetation and land-surface characteristics were different from today. The LGM has been a focus for the Paleoclimate Modelling Intercomparison Project (PMIP) since its inception, and thus many of the problems that might be associated with simulating such a radically different climate are well documented. The LGM state provides an ideal case study for evaluating climate model performance because the changes in forcing and temperature between the LGM and pre-industrial are of the same order of magnitude as those projected for the end of the 21st century. Thus, the CMIP6 LGM experiment could provide additional information that can be used to constrain estimates of climate sensitivity. The design of the Tier 1 LGM experiment (lgm) includes an assessment of uncertainties in boundary conditions, in particular through the use of different reconstructions of the ice sheets and of the change in dust forcing. Additional (Tier 2) sensitivity experiments have been designed to quantify feedbacks associated with land-surface changes and aerosol loadings, and to isolate the role of individual forcings. Model analysis and evaluation will capitalize on the relative abundance of paleoenvironmental observations and quantitative climate reconstructions already available for the LGM.
Document ID
20180000964
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Kageyama, Masa
(Institut Pierre-Simon Laplace (IPSL) France)
Albani, Samuel
(Institut Pierre-Simon Laplace (IPSL) France)
Braconnot, Pascale
(Institut Pierre-Simon Laplace (IPSL) France)
Harrison, Sandy P.
(Reading Univ. United Kingdom)
Hopcroft, Peter O.
(Bristol Univ. United Kingdom)
Ivanovic, Ruza F.
(Leeds Univ. United Kingdom)
Lambert, Fabrice
(Pontifical Catholic Univ. of Chile Santiago, Chile)
Marti, Olivier
(Institut Pierre-Simon Laplace (IPSL) France)
Peltier, W. Richard
(Toronto Univ. Ontario, Canada)
Peterschmitt, Jean-Yves
(Institut Pierre-Simon Laplace (IPSL) France)
Roche, Didier M.
(Vrije Univ. Amsterdam, Netherlands)
Tarasov, Lev
(Memorial Univ. of Newfoundland Saint Johns, Newfoundland, Canada)
Zhang, Xu
(Alfred-Wegener-Inst. for Polar and Marine Research Bremerhaven, Germany)
Brady, Esther C.
(National Center for Atmospheric Research Boulder, CO, United States)
Haywood, Alan M.
(Leeds Univ. United Kingdom)
LeGrande, Allegra N.
(NASA Goddard Inst. for Space Studies New York, NY, United States)
Lunt, Daniel J.
(Bristol Univ. United Kingdom)
Mahowald, Natalie M.
(Cornell Univ., Inc. Ithaca, NY, United States)
Mikolajewicz, Uwe
(Max-Planck-Inst. fuer Meteorologie Hamburg, Germany)
Nisancioglu, Kerim H.
(Oslo Univ. Norway)
Otto-Bliesner, Bette L.
(National Center for Atmospheric Research Boulder, CO, United States)
Renssen, Hans
(Vrije Univ. Amsterdam, Netherlands)
Tomas, Robert A.
(National Center for Atmospheric Research Boulder, CO, United States)
Zhang, Qiong
(Stockholm Univ. Sweden)
Abe-Ouchi, Ayako
(Tokyo Univ. Chiba, Japan)
Bartlein, Patrick J.
(Oregon Univ. Eugene, OR, United States)
Cao, Jian
(Nanjing Univ. of Information Science and Technology Nanjing, People's Republic of China)
Li, Qiang
(Stockholm Univ. Sweden)
Lohmann, Gerrit
(Alfred-Wegener-Inst. for Polar and Marine Research Bremerhaven, Germany)
Ohgaito, Rumi
(Japan Agency for Marine-Earth Science and Technology Yokosuka, Japan)
Shi, Xiaoxu
(Alfred-Wegener-Inst. for Polar and Marine Research Bremerhaven, Germany)
Volodin, Evgeny
(Academy of Sciences (Russia) Moscow, Russian Federation)
Yoshida, Kohei
(Meteorological Research Inst. Tsukuba, Japan)
Zhang, Xiao
(Hawaii Univ. Honolulu, HI, United States)
Zheng, Weipeng
(Institute of Atmospheric Physics Beijing, China)
Date Acquired
February 5, 2018
Publication Date
November 7, 2017
Publication Information
Publication: Geoscientific Model Development
Publisher: Copernicus Publications
Volume: 10
Issue: 11
ISSN: 1991-9603
Subject Category
Meteorology And Climatology
Report/Patent Number
GSFC-E-DAA-TN49083
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available