File:Nu sar 1.png

Summary
Preliminary version, last update --Resup (talk) 17:02, 27 August 2018 (UTC)

If evaporation is like diesel, there is some data how that will be, table 7.2, figure 7.10 here

https://www.researchgate.net/publication/222138394_Studies_on_the_evaporation_of_crude_oil_and_petroleum_products_I_The_relationship_between_evaporation_rate_and_time

I run crude estimate assuming that evaporation as in the above paper, at 20 Celsius, travels at v=2 m/s , with plume expanding at (1/5) v horizontally and having constant height vertically, taken to be 1.2 km ('stratoshpere height for 200 g/mol gas) Dropping height 10 times will increase concentration 10 times but still not going to save it.

Plot is secondary evaporation contribution 10 m directly downwind, from droplets of diesel-like fluid at 20 Celsius. It is too low, so one should only chase the initial visible plume which has initially vaporized stuff traveling in it