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MARS
Labels the version of the operational forecast system Used for seasonal forecast related products.
systemmethod = <value> |
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Labels the version of the operational forecast system for seasonal forecast related products.
For example, the ECMWF seasonal forecasting system uses system=1 for cycle 15r8, used between 1997 and 2002, and system=2 for the cycle 23r4 based system introduced in 2002. For research seasonal forecast experiments, system is set to 0 (not usedFor a given system or experiment, specifies how the analyses and forecasts were produced. In Seasonal Forecast system 2, method=0 denotes the case when no ocean data assimilation was used to prepare ocean initial conditions; method=1 is the standard case of data assimilation. From Seasonal Forecast System 3, for the standard forecasts (up to month 7), request method=1. For the longer range forecasts (out to month 13), request method=3 (the first 7 months of METHOD=3 data for each extended integration is a simple copy of the corresponding METHOD=1 data).
Example to specify 2 metre temperature from the multi-model seasonal forecast system 5:
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class = od,date = 2018-10
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origin = 98, param = 167
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step = 12,stream
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Dissemination
Used for seasonal forecast related products
method = <value> |
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The seasonal forecast is run once a month to 7 months forecast and once a quarter to 13 months.
To distinguish between the 2 methods the key method is used.
| value | description |
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| 1 | for the monthly 7 months forecast |
| 3 | for the 13 months forecast (not available on dissemination) |
For the Extended
.../..Not supported (only data of ECMWF origin are disseminated).
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