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emep:page1:pm_underestimation [2011-08-25 09:28:38] michaels |
emep:page1:pm_underestimation [2022-05-31 09:29:32] (current) |
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| * pH dependency of SO2 ox rate \\ | * pH dependency of SO2 ox rate \\ | ||
| * wet scavenging (in ice, scavenging rates ...)\\ | * wet scavenging (in ice, scavenging rates ...)\\ | ||
| - | * emission heights (probably not important)\\ | + | * emission heights:\\ |
| + | DS:I have started this, testing different plume-rise | ||
| + | formula together with the IIASA . Peter contributed with a subroutine to | ||
| + | spread the emissions into flexible vertical layers also. Should all be | ||
| + | ready soon-ish, but probably won't change things very much as you say. (probably not important)\\ | ||
| * Size of vertical layers, boundary layer mixing \\ | * Size of vertical layers, boundary layer mixing \\ | ||
| Line 14: | Line 18: | ||
| * Agricultural and Industrial dust in windy, dry conditions \\ | * Agricultural and Industrial dust in windy, dry conditions \\ | ||
| * BIC for aerosols, dust in southern Europe\\ | * BIC for aerosols, dust in southern Europe\\ | ||
| - | * Wood burning emissions underestimated\\ | + | * Wood burning emissions underestimated:Robert is doing a lot with Hugo as we speak, but the problem is with the " |
| + | when we know they are wrong. | ||
| + | We could change the time-series though, using a " | ||
| + | Betrand used. That would be good, but requires some testing. I think | ||
| + | that SNAP-2 in general should have this, and wood-burning especially, | ||
| + | but I also suspect that wood-burning starts at a lower temperature than | ||
| + | Betrand' | ||
| * Station representativity for some specific sites (Susceptibility to inversion situations in winter?)\\ | * Station representativity for some specific sites (Susceptibility to inversion situations in winter?)\\ | ||
| + | * Kz, Hmix - currently our minimum mixing height is in the 2nd layer | ||
| + | (k=19). I have some test versions which allow very shallow mixing | ||
| + | heights. These cause a slight increase in surface PM, and are | ||
| + | scientifically ok I think. I can commit next week if all looks well. \\ | ||
| + | (What I am less sure about is what we should do for Kz above Hmix. Now | ||
| + | we have zero, earlier we used critical Richardson numbers, etc. Seems | ||
| + | better to use the latter.) \\ | ||
| + | |||
| + | * I suggested some ideas for David H. here to work with, but that seems | ||
| + | to be progressing slowly. I'll check again on this next week. \\ | ||
| + | |||
| * Ammonium nitrate formation \\ | * Ammonium nitrate formation \\ | ||
| * Emission seasonality for SO2 missing\\ | * Emission seasonality for SO2 missing\\ | ||
| Line 21: | Line 42: | ||
| Which Analysis : | Which Analysis : | ||
| - | * Separate discussion by aerosol component | + | * Separate discussion by aerosol component\\ |
| - | * AMS measurements EUSAAR ? | + | * AMS measurements EUSAAR ?\\ |
| - | * Caliop extinction profiles for European subregions become available shortly, extinction profile in model needed, | + | * Caliop extinction profiles for European subregions become available shortly, extinction profile in model needed, |
| - | * EUCAARI aircraft measurements? | + | * EUCAARI aircraft measurements? |
| - | * Seasonal and spatial bias analysis | + | * Seasonal and spatial bias analysis |
| + | ** When do we underestimate?? | ||
| + | if we can see patterns in the days when we underestimate compared to | ||
| + | when we don't. Is it on very cold days, or generally for example? | ||
| + | compounds cause most of the problem? Might give a clue on whether it is | ||
| + | meteorology of chemistry. \\ | ||
| + | |||
| + | ===== Minutes ===== | ||
| + | * [[emep: | ||