Hand, Ralf; Samakinwa, Eric; Lipfert, Laura; Brönnimann, Stefan (2023). ModE-Sim – a medium-sized atmospheric general circulation model (AGCM) ensemble to study climate variability during the modern era (1420 to 2009). Geoscientific model development (GMD), 16(16), pp. 4853-4866. Copernicus Publications 10.5194/gmd-16-4853-2023
|
Text
gmd-16-4853-2023.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (3MB) | Preview |
We introduce ModE-Sim (Modern Era SIMulations), a medium-sized ensemble of simulations with the atmospheric general circulation model ECHAM6 in its LR (low-resolution) version (T63; approx. 1.8° horizontal grid width with 47 vertical levels). At the lower boundary we use prescribed sea surface temperatures and sea ice that reflect observed values while accounting for uncertainties in these. Furthermore we use radiative forcings that also reflect observed values while accounting for uncertainties in the timing and strength of volcanic eruptions. The simulations cover the period from 1420 to 2009. With 60 ensemble members between 1420 and 1850 and 36 ensemble members from 1850 to 2009, ModE-Sim consists of 31 620 simulated years in total. ModE-Sim is suitable for many applications as its various subsets can be used as initial-condition and boundarycondition ensembles to study climate variability. The main intention of this paper is to give a comprehensive description
of the experimental setup of ModE-Sim and to provide an evaluation, mainly focusing on the two key variables, 2m temperature and precipitation. We demonstrate ModE-Sim’s ability to represent their mean state, to produce a reasonable response to external forcings, and to sample internal variability. Through the example of heat waves, we show that the ensemble is even capable of capturing certain types of extreme events.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Institute of Geography > Physical Geography > Unit Climatology 10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR) 08 Faculty of Science > Institute of Geography 08 Faculty of Science > Institute of Geography > Physical Geography |
UniBE Contributor: |
Hand, Ralf, Samakinwa, Eric, Lipfert, Laura Barbara, Brönnimann, Stefan |
Subjects: |
900 History > 910 Geography & travel |
ISSN: |
1991-959X |
Publisher: |
Copernicus Publications |
Language: |
English |
Submitter: |
Madina Susanna Vogt |
Date Deposited: |
17 Oct 2023 07:34 |
Last Modified: |
17 Oct 2023 07:34 |
Publisher DOI: |
10.5194/gmd-16-4853-2023 |
BORIS DOI: |
10.48350/187231 |
URI: |
https://boris.unibe.ch/id/eprint/187231 |
Actions (login required)
 |
Edit item |