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
| Name of sequence of simulations as in Paper | Simulation sequence name as in web pages | Detailed description of individual simulations within sequence |
|---|---|---|
| ORB-GHG - Sequence of simulations forced by changes to only the orbit and greenhouse gases | bbc_orbit_GHG_03 | Detailed List of Runs |
| ALL - Sequence of simulations using all changes | bbc_all_03 | Detailed List of Runs |
This paper is the first time that anyone has attempted to simulate the last glacial interglacial cycle using a high resolution climate model (Hadley Centre climate model, HadCM3) and multiple time slices. Such a methodology does not capature the high frequency responses but does represent the orbital time scale changes
| Name | Singarayer and Valdes |
|---|---|
| Brief Description | This paper is the first time that anyone has attempted to simulate the last glacial interglacial cycle using a high resolution climate model (Hadley Centre climate model, HadCM3) and multiple time slices. Such a methodology does not capature the high frequency responses but does represent the orbital time scale changes |
| Full Author List | Singarayer JS, and Valdes PJ |
| Title | High-latitude climate sensitivity to ice-sheet forcing over the last 120 kyr |
| Year | 2010 |
| Journal | Quaternary Science Reviews |
| Volume | 29 |
| Issue | 3-4 |
| Pages | 43-55 |
| DOI | 10.1016/j.quascirev.2009.10.011 |
| Contact's Name | Joy Singarayer |
| Contact's email | joy.singarayer@bristol.ac.uk |
| Abstract | Interpretation of ice-core records is currently limited by paucity of modelling at adequate temporal and spatial resolutions. Several key questions relate to mechanisms of polar amplification and inter-hemispheric coupling on glacial/interglacial timescales. Here, we present the first results from a large set of global ocean-atmosphere climate model 'snap-shot' simulations covering the last 120 000 years using the Hadley Centre climate model (HadCM3) at up to 1 kyr temporal resolution. Two sets of simulations were performed in order to examine the roles of orbit and greenhouse gases versus ice-sheet forcing of orbital-scale climate change. A series of idealised Heinrich events were also simulated, but no changes to aerosols or vegetation were prescribed. This paper focuses on high latitudes and inter-hemispheric linkages. The simulations reproduce polar temperature trends well compared to ice-core reconstructions, although the magnitude is underestimated. Polar amplification varies with obliquity, but this variability is dampened by including variations in land ice coverage, while the overall amplification factor increases. The relatively constant amplification of Antarctic temperatures (with ice-sheet forcing included) suggests it is possible to use Antarctic temperature reconstructions to estimate global changes (which are roughly half the magnitude). Atlantic Ocean overturning circulation varies considerably only with the introduction of Northern Hemisphere ice sheets, but only weakens in the North Atlantic in the deep glacial, when ocean-sea-ice feedbacks result in the movement of the region of deep convection to lower latitudes and with the introduction of freshwater to the surface North Atlantic in order to simulate Heinrich events. |