Paper: Stone Lunt 2013

Title: The role of vegetation feedbacks on Greenland glaciation

For a fuller description of the paper itself, go to the end of this web page.

Each simulation published in this paper corresponds to a unique 5 or 6 character code on the web pages.
The following table lists the name of the simulation as used in the paper, and the corresponding code name

The webpage gives you the ability to examine the published simulations, but you can also download the raw (netcdf) files to perform your own analysis. Detailed instructions on how to use the webpages and access the data can be found here: Using_BRIDGE_webpages.pdf

There are a lot of simulations going into this paper but they are grouped around two sequences, one using orbital and greenhouse gas forcing and the second also including ice sheets and land sea changes.

You can have make you own analysis and plots by going here

Simulation Name as in PaperSimulation name on web pages
Pre-Industrial HadCM3, M2.1 control simulationtdbya
Pre-industrial HadCM3 (M2.1),ice replaced with soil & rebounded orogtdbyb
Pre-industrial HadCM3 (M2.1),ice replaced with broadleaf tree & rebounded orogtdbyc
Pre-industrial HadCM3 (M2.1),ice replaced with needleleaf tree & rebounded orogtdbyd
Pre-industrial HadCM3 (M2.1),ice replaced with C3 grass & rebounded orogtdbye
Pre-industrial HadCM3 (M2.1),ice replaced with C4 grass & rebounded orogtdbyf
Pre-industrial HadCM3 (M2.1),ice replaced with shrub & rebounded orogtdbyg
Pre-industrial HadCM3 (M2.1),ice replaced with soil & modern topgtdbyh
Pre-industrial HadCM3 (M2.1),ice replaced with broadleaf tree & modern topgtdbyi
Pre-industrial HadCM3 (M2.1),ice replaced with needleleaf & modern topgtdbyj
Pre-industrial HadCM3 (M2.1),ice replaced with needleleaf tree & modern topgtdbyk
Pre-industrial HadCM3 (M2.1),ice replaced with C3 grass & modern topgtdbyl
Pre-industrial HadCM3 (M2.1), ice replaced with C4 grass & modern topgtdbym
Pre-industrial HadCM3 (M2.1),ice replaced shrub & modern topgtdbyn
Pre-industrial HadCM3 (M2.1), with ice and rebounded orogtdbyo
Pre-industrial HadCM3 (M2.1), with ice and rebounded orogtdbyp
Pre-industrial HadCM3 (M2.1), ice replaced with needleleaf tree & reboudned orog but roughness length set to value for icetdbyq
Pre-industrial HadCM3 (M2.1) control with equilibrium TRIFFID ontdbyr
Pre-industrial HadCM3 (M2.1), ice replaced with soil & rebounded orog with equilibirum TRIFFID ontdbys
Pre-industrial HadCM3 (M2.1), ice replaced with needleleaf tree & rebounded orog with equilibirum TRIFFID ontdbyt
Pre-industrial HadCM3 (M2.1) control continued from equilibirum TRIFFID control now with dynamic TRIFFID ontdbyu
Pre-industrial HadCM3 (M2.1) control continued from equilibirum TRIFFID ice replaced with soil & rebounded orog now with dynamic TRIFFID ontdbyv
Pre-industrial HadCM3 (M2.1) control continued from equilibirum TRIFFID ice replaced with needleaf tree & rebounded orog now with dynamic TRIFFID on


This is a fuller description of paper

This paper presents a number of experiments using HadCM3 to test the sensitivity of Greenland ice sheet regrowth to vegetation feedbacks under preindustrial conditions. 12 experiments with present day and rebounded topgraphy are performed with bare soil, C3 grasses, C4 grasses, shrubs, broadleaf trees and needleleaf trees. two further experiments are run where vegetation type is predicted over an ice-free Greenland initiated from bare soil and needleleaf trees.

NameStone et al
Brief DescriptionThis paper presents a number of experiments using HadCM3 to test the sensitivity of Greenland ice sheet regrowth to vegetation feedbacks under preindustrial conditions. 12 experiments with present day and rebounded topgraphy are performed with bare soil, C3 grasses, C4 grasses, shrubs, broadleaf trees and needleleaf trees. two further experiments are run where vegetation type is predicted over an ice-free Greenland initiated from bare soil and needleleaf trees.
Full Author ListE. J. Stone, D. J. Lunt
TitleThe role of vegetation feedbacks on Greenland glaciation
Year2013
JournalClimate Dynamics
Volume40
Issue3-4
Pages2671-2686
DOI10.1007/s00382-012-1390-4
Contact's NameEmma Stone
Contact's emailEmma.j.stone@bristol.ac.uk
AbstractThe role of vegetation feedbacks for the process of ice-sheet evolution could potentially be important in realistically modeling the past and future evolution of the Greenland ice-sheet. We use a fully coupled atmosphere–ocean model to assess the response of the climate when the Greenland ice-sheet is replaced with a number of fixed vegetation types (bare soil, broadleaf and needleleaf trees, C3 and C4 grasses and shrubs) in conjunction with loaded and unloaded bedrock orography. These sensitivity experiments show that albedo changes dominate the climate response during the summer months while temperature changes during winter are attributed to altitude change and changes in atmospheric circulation over Greenland. Snow-free summers occur for all fixed vegetation types, except for high altitude eastern regions for bare soil. We perform further simulations with dynamic vegetation resulting in dominant shrub coverage over central and southern Greenland with grasses supported in the north. Ice-sheet modeling shows significant regrowth of the Greenland ice-sheet can occur for a bare soil surface type, dependent on ice-sheet model parameters, while Greenland remains almost ice-free for needleleaf tree coverage. Furthermore, a realistically vegetated Greenland can only support a small amount of ice-sheet regrowth implying multi-stability of the Greenland ice-sheet under a preindustrial climate. This study highlights the importance of considering vegetation climate ice-sheet interactions, and uncertainty in ice-sheet model parameters.