Within PREFACE, observational and modelling science were combined to enhance prediction of the Tropical Atlantic climate and its ecological and socio-economic impacts.
Use the links below for an overview of observations, models and experiments performed during PREFACE, and for access to data. For easier navigation, the descriptions of available data have been structured by the work package(s) leading to their collection and/or production.
- WP3&4 Observational Data
- EAF Nansen Programme data (WP4 & WP12): For information on available historic oceanographic and fisheries data from the EAF Nansen programme, go to the dedicated wiki.
- WP5 coordinated ocean model experiments are summarised in tables in Milestones MS18 and MS19.
- WP6 data corresponds to coordinated experiments to identify sources of forecast drift. The experiments were described in Milestone MS22. The coordinated experiments data are long-term archived in NIRD/NorStore. Milestone 23 lists all sensitivity experiments performed for Tasks 6.3 and 6.4. For further queries or access to data contact the project office.
- WP7 data corresponds to the anomaly coupling data (coordinated coupled model experiments which are simulations with historical forcing used to address the relation between the mean state and simulated variability in the tropical Atlantic). This data is described in Milestone MS25 and Deliverable D7.2. For further queries or access to data contact the project office.
- WP8 performed a variety of experiments with global coupled models aimed at understanding the interrelation of errors (in the mean and variability) in the Atlantic with other regions. Data resides at the originating institution and is available upon request. The table below, together with Milestones MS 26 and MS27 summarise experiments performed.
| Simulation | Model | Period | Resolution | Special Features | Objective |
| NorESM Anomaly coupling |
NorESM | 100yr long | 2.5 lon by 1.9 lat, 23 levels | Restore climatology to 1075-1995 period | To study the impact of bias on variability (run from WP7) |
| UCLA Anomaly coupling |
UCLA CGCM | 100yr long | 2.5 lon by 2 lat, 29 levels | ||
| Cos z 1 ucla |
UCLA CGCM | 25 yr long | 2.5 lon by 2 lat, 29 levels | Reduction of incoming solar radiation in the southern ocean | To study of impact of remote biases in tropical biases and variability |
| Cos z 1 noresm | NorESM | 100 yr | 2,5 lon by 1,9 lat, 23 levels | ||
| Cos z 2 ucla |
UCLA-CGCM | 80 yr long experiment | 2,5 lon by 2 lat, 29 levels | as above, but reduction only over the Atlantic sector of SO | |
| Inter-basin connection | ECHAM5/MPIOM | 1950-2005 | T63, L31 | Ensemble simulations, partially coupled in the Atlantic and Pacific, respectively | Evaluation impact of Atlantic SST variability on the Indo-Pacific |
| Inter-basin connection | SPEEDY v.40 AGCM+1.5 layer ocean model | 1871-2002 | T30, 8 levels | ||
| North Atlantic Salinity bias | KCM | 1) 2000 yr control; 2) 100 yr resorting NA SSS to climatology; 3) fresh water flux correction |
Atm: T42, 19 vertical levels Ocean: NEMO ORCA2 31 levels |
Flux corrected experiments | Evaluate impact of improvements in the north Atlantic sea surface salinity fluxes on bias |
- WP9 performed a series of experiments to study the mechanisms for tropical Atlantic variability on seasonal and longer timescales, and their relation to variability elsewhere. The experiments are fully described in Milestone MS29. The table below shows a summary of model output data for WP9.
| Simulation | Model | Period | Domain | Resolution | Special Features | Objective |
| Subtropical anticyclones-Equatorial mode | NEMO | 1958-2011 | Tropical Atlantic | ¼° horizontal resolution and 46 z-levels ranging from 5 m thickness in the upper 30 m to 200 m | ATLTROP025 configuration | Evaluation of inter-annual SST variability in the tropical Atlantic and impacts |
| Impacts of the Equatorial Mode | UCLA / SPEEDY | Two periods: late XX Century, late XXI Century | Global | 2ºx2.5º 19 levels / t30 8 levels | AGCM configuration | |
| Two-way Atlantic-Pacific | SPEEDY v.40 AGCM+1.5 layer ocean model | 1871-2002 | Global | T30, 8 levels | Partially coupled in the Atlantic and Pacific, respectively | |
| Partially coupled AOGCM | SPEEDY v41.5 + NEMO / mixed layer model | XX Century | Global | T30, 8 levels | Idealized sensitivity experiments | Analysis of decadal variability and trends in tropical Atlantic |
| Atlantic subpolar gyre-TAV | ECHAM6 high-top model | Present and Future | Global | T63L47 | Much larger extra-tropical SST anomalies applied |
- WP10 data usage and products can be found in Deliverables D10.1-10.3.
- WP11 performed a series of seasonal and climate prediction experiments to assess the impact of model biases, forecast drift, sources of skill and mean state errors on climate projections. Milestones MS35 and MS36 (also Deliverables D11.1, D11.2 and references therein) provide a description of these experiments. Data of the simulations are available from the local archive centres
- WP12 data:
- Historical pelagic data and recent data from cruises WH375 and WH383 (MS38, MS41, MS42) are soon to be available (pending PhD defense). Some data can already be accessed: Milestone 38; see also Fock HO and Czudaj S. 2018. Size structure changes of mesopelagic fishes and community biomass size spectra along a transect from the Equator to the Bay of Biscay collected in 1966-1979 and 2014-2015. ICES Journal of Marine Science. DOI: 10.1093/icesjms/fsy068
- Tuna tagging experiments (MS40, MS42) will be submitted to ICCAT after PhD defense (Autumn 2018)
- For Tasks 12.3 and 12.4, Milestone MS45, Deliverables D12.3 and D12.4.
- WP13 data is described in Deliverables D13.1-13.3, which will be available on the project website (and through OpenAire) as soon as several candidates complete their PhD degree (early 2018). For any query on the socio-economic surveys, do not hesitate to contact the work package leader.
(Overview of planned experiments and models in PREFACE)