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| Model version | Implement. date in S2S | Time range | Resolution | Ens. Size | Frequency | Re-forecasts | Rfc period | Rfc frequency | Rfc size | Ocean resolution | Active Sea Ice | Remarks |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
GEPS2203 TO BE UPDATED | 3015/03/20212022 | d 0-34 | Tl479Tq479/Tl319Tq319L128 | 49+1 | weekly (Wed) lagged eps created from 2 runs (*5) | fixed | 19811991-2020 (model version date 31/03/20212022) | 2/month (always on the 15th and the last day of month *3) | 12+1 | N/A | N/A | |
GEPS2103 | 30/03/2021 | d 0-34 | Tl479/Tl319L128 | 49+1 | weekly (Wed) lagged eps created from 2 runs (*5) | fixed | 1981-2020 (model version date 31/03/2021) | 2/month (always on the 15th and the last day of month *3) | 12+1 | N/A | N/A | |
GEPS2003 | 24/03/2020 | d 0-34 | Tl479/Tl319L100 | 49+1 | weekly (Wed) lagged eps created from 4 runs (*4) | fixed | 1981-2010 (model version date 31/03/2020) | 2/month (always on the 15th and the last day of month *3) | 12+1 | N/A | N/A | |
GEPS1701 | 22/03/2017 | d 0-34 | Tl479/Tl319L100 | 49+1 | weekly (Wed) lagged eps created from 4 runs (*4) | fixed | 1981-2012 (model version date 31/01/2017) | 3/month (always on the 10th, 20th and the last day of month *3) | 4+1 | N/A | N/A | |
GSM1403C | 06/01/2015 | d 0-34 | Tl319/L60 | 24+1 | 2/week (Tue, Wed) | fixed | 1981-2010 (model version date 04/03/2014) | 3/month (always on the 10th, 20th and the last day of month *3) | 4+1 | N/A | N/A |
Description of the main changes
GEPS2203
- The horizontal resolution improved to about 40km up to 18 days and about 55km after that. The physical parameterization schemes and two-tiread SST method are improved.
- operational from
GEPS2103
- The new JMA real-time ensemble system includes 2 start dates (Tuesdays and Wednesdays at 12Z) instead of the previous 4 runs (see the description in GEPS1701 below). The ensemble size is 25 members for both days and the resulting new lagged ensemble for S2S is a single 50-member ensemble starting on Wednesdays at 12Z.
- operational from
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