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NOAA-ORR-ERD / PyGnome

The General NOAA Operational Modeling Environment
https://gnome.orr.noaa.gov/doc/pygnome/index.html
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Weathering processes #148

Open larissafranklin23 opened 1 year ago

larissafranklin23 commented 1 year ago

Hello, I would like to know which weathering processes are planned in the operation of PyGnome. I have been running some simulations recently and noticed that the processes of biodegradation and dissolution have not been implemented yet. However, I saw in the manual that the emulsification process is mentioned, but I couldn't find it in my output file. In my simulations I have some results like this:

"beached": 9353233.393957058, "off_maps": 0.0, "avg_density": 1023.3094613657522, "floating": 30756652.63004875, "amount_released": 72537599.99999999, "non_weathering": 9353233.393957058, "avg_viscosity": 0.9013307929063417, "evaporated": 32410324.489733078, "natural_dispersion": 16980.224566070945, "sedimentation": 409.2616950438084, "water_content": 0.577351617597763, "time_stamp": "2019-12-02T01:00:00"

ChrisBarker-NOAA commented 1 year ago

You are correct, bio-degradation and dissolution are experimental at this point.

As for emulsification:

"water_content": 0.577351617597763,

An emulsion is water droplets mixed into the oil -- this indicates that the emulsion is ~58% water by mass.

Note also that:

"avg_density": 1023.3094613657522,

is the average over all elements of the total density of the emulsion, not the pure oil -- As a rule, the sea water is denser than the oil, so the emulsion is more dense than the pure oil as well.