# Changes between Version 4 and Version 5 of EwEugPrimaryProduction

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Timestamp:
2010-11-22 00:52:24 (9 years ago)
Comment:

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• ## EwEugPrimaryProduction

 v4 == 3.17 Primary production == For primary producers the production is estimated as a function of the producers’ biomass, Bi, from a simple saturating relationship For primary producers the production is estimated as a function of the producers' biomass, Bi, from a simple saturating relationship [[Image(wiki:EwEugImages:08000039.png)]] '''Eq. 67''' where, ''r,,i,,'' is the maximum production/biomass ratio that can be realized (for low ''B,,i,,''’s), and ''r,,i,,/h,,i,,'' is the maximum net primary production when the biomass is not limiting to production (high'' B,,i,,''’s). For parameterization it is only necessary to provide an estimate of ''r'',,''i'',, / (''P,,i,,/B,,i,,''), i.e., a factor expressing how much primary production can be increased compared to the base model state. If a [wiki:EwEugForcingFunction Forcing function] is applied to primary production (see [wiki:EwEugApplyForcingFunctionPrimaryProducer Apply FF (primary producer)]), it multiplies the r parameter in Eq. 67. where, ''r,,i,,'' is the maximum production/biomass ratio that can be realized (for low ''B,,i,,'' 's), and ''r,,i,,/h,,i,,'' is the maximum net primary production when the biomass is not limiting to production (high'' B,,i,,'' 's). For parameterization it is only necessary to provide an estimate of ''r'',,''i'',, / (''P,,i,,/B,,i,,''), i.e., a factor expressing how much primary production can be increased compared to the base model state. If a [wiki:EwEugForcingFunction Forcing function] is applied to primary production (see [wiki:EwEugApplyForcingFunctionPrimaryProducer Apply FF (primary producer)]), it multiplies the r parameter in Eq. 67.