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	Forecast / Analysis	Number of members	Horizontal resolution	Vertical levels	Pressure at model top (hPa)	Perturbation models
CTRL (former HRES) Atmospheric Model control forecast Data Graphical products	Forecast 0–15 days	1	Native ⁽¹⁾: O1280 ~9km Interpolated ⁽²⁾: 0.1° ~9km	137	0.01 hPa	No
ENS Ensemble - Atmospheric Model Data Graphical products	Forecast 0–15 days	51	Native ⁽¹⁾: O1280 ~9km Interpolated ⁽²⁾:0.1°	137	0.01 hPa	Yes⁽⁴⁾
ENS Sub-seasonal Atmospheric Model Sub-seasonal forecast Data Graphical products	Forecast 0–46 days once a day at 00 UTC	101	Native ⁽¹⁾: O320 ~36km Interpolated ⁽²⁾: 0.4°	137	0.01 hPa	Yes ⁽⁴⁾
4DVAR 4-Dimensional data assimilation Data (See Analysis in HRES) Graphical products	Analysis	1	N128/N160/N200/N256 inner loop minimisations 4 outer loops at O1280 resolution	137	0.01 hPa	No
EDA Ensemble of data assimilations Data	Analysis	51	N191/N191 N200/N200/N256 inner loop minimisations 2 3 outer loops at O1280 resolution	137	0.01 hPa	Yes ⁽⁵⁾
SEAS5 2017 version Cycle 43r1 Seasonal forecast Data Graphical products	Forecast long-range forecast run monthly from 0 to 7 months annual range forecast run quarterly from 0 to 13 months	51 15	Native ⁽¹⁾:O320 ~36km Interpolated ⁽²⁾: 0.4°	91	0.01 hPa	Yes ⁽⁴⁾

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