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EMEP output #85
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Hi, I hope those answers will be useful:
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Hi Svetlana,
Many thanks for your answers, good to know. May I ask what is the reason behind SURF_ug_PM25?
Best regards
Jana
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Hi Svetlana, Jana,
PMFINE uses "OM25_p" (see CM_ChemGroups_mod), which is the particulate sum of OM species. So, no gas-phase. |
Hi Dave, |
Hi Jana, Yes, PMFINE is special that way. Confusing I know! |
Hi Jana, Regarding SURF_ug_PM25, we assume that a fraction of coarse NO3 (if you imagine a log-normal distribution) will be in particles smaller than 2.5 mkm. Svetlana |
Thanks Svetlana, I have found Table 6 in Simpson et al., 2012 now, that explains it. Best regards /Jana |
One more question regarding the organic part, if I may. Do I understand this correctly?: |
Hi, I have a question about how to set up the model output. I have found some answers in issue #48 but would like to confirm:
NH4 seems to be present only in the fine-mode particles NH4_F, no NH4_C is that correct?
I need to output PM2.5 and PM10 not including the associated water. Studying the Simpson et al., 2012 paper, I was not sure if PMFINE, PMCO and PM10 are with or without water but from comment in #48 I have concluded that these should be without the associated water as there are listed the same parameters with _RH50 in the name which looks like the conditions for calculation of the PM-associated water described in Simpson et al., 2012.
In the config_emep.nml which comes with rv4.34, in OutputConcs PMFINE is output both in 'ug' and in 'ug_PM'. What is the difference? Looks like it is OM25, OMCOARSE, ASOA and BSOA also using both the ug_PM and ug outputs, somewhere I have read that in that case ug includes semivolatiles in the gas phase while ug_PM only include the particulate-phase organics. Would it be the same case for PMFINE?
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