Table 1 Numerical experimental design
From: Impacts of North Atlantic tripole SSTAs mode and its three individual components on ENSO
Experiments | Descriptions |
|---|---|
CTRL | The experiment is integrated for 250 years with freely coupled atmospheric and oceanic components. |
NACLM | The North Atlantic (10°–70°N, 80°–10°W) is prescribed with the observed climatological mean SST annual cycle during 1980–2010, whereas the ocean and atmosphere are freely coupled elsewhere. The experiment is integrated for 30 years. The initial field is taken from 1 January of the last year in the CTRL experiment. |
NATM | The SST from 1 January to 31 May in every year over the North Atlantic (10°–70°N, 80°–10°W) is replaced by the observed climatological mean SST plus composite SSTAs of the North Atlantic tripole mode. The other is set to the same as the NACLM experiment. |
TNA | The SST from 1 January to 31 May in every year over the tropical North Atlantic (10°–40°N, 80°–10°W) is replaced by the observed climatological mean SST plus composite negative SSTAs of the North Atlantic tripole mode. The other is set to the same as the NACLM experiment. |
MNA | The SST from 1 January to 31 May in every year over the mid-latitude North Atlantic (20°–60°N, 80°–10°W) is replaced by the observed climatological mean SST plus composite positive SSTAs of the North Atlantic tripole mode. The other is set to the same as the NACLM experiment. |
HNA | The SST from 1 January to 31 May in every year over the high-latitude North Atlantic (40°–70°N, 80°–10°W) is replaced by the observed climatological mean SST plus composite negative SST anomalies of the North Atlantic tripole mode. The other is set to the same as the NACLM experiment. |
