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Forecast/Analysis

Number of members

Horizontal resolution

Vertical levels

Pressure at model top (hPa)

Perturbation models

Number of years

ENS

0–46 days
run twice a week

11

Day 0-15

Native ⁽¹⁾: O640
Interpolated⁽²⁾: 0.25° ~28km

Day 16-46

Native ⁽¹⁾: O320
Interpolated (2): 0.5° ~55km

0.01 hPa

Yes ⁽⁴⁾

Most recent 20

SEAS5 Cycle 43r1

Seasonal forecast

Forecast

run monthly
0–7 months (monthly)

run quarterly 0-13 months (annual range)

25

15

Native ⁽¹⁾:O320 ~36km
Interpolated ⁽²⁾: 0.4°

0.01 hPa

Yes ⁽⁴⁾

36 (1981-2016)

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Atmospheric and Ocean-wave reanalysis ERA5

ERA5, based on IFS Cycle 41r2, is used to initialise ensemble reforecasts.

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