Recent comments in /f/newhampshire

TheCloudBoy t1_j8p55gr wrote

One critical question I still have is how these particles may bond to both ice crystals, water droplets, and supercooled droplets deeper in the atmosphere. Are they small enough to act as cloud condensation nuclei? Did they bond to the aforementioned hydrometers and precipitate out wherever the plume density was highest and rain/snow occurred?

15

TheCloudBoy t1_j8p4wce wrote

Good question: this is the first I've seen of ARL running particle cross section analysis right at the start of the controlled fire before the mean wind shifted. So at the initial burst, they're modeling (using I suspect a different model than the one I used to calculate the forward trajectory) the most likely dispersion integrating estimated particle release per hour. That's also starting a full 12 hours earlier than mine, right as the trough is moving through, more on that below.

What this shows is particles initially contained in the lowest 3,000 ft of the atmosphere that advect NE, then N as they're mixed higher into the atmosphere (shades of blue). This likely is along the first upper-level trough to pivot through here last week, though these particles being an issue here seems almost non-existent given what we know about the lifespan of vinyl chloride gas & how high up these particles were mixed. Then as the winds became more predominately WNW (second image), the plume orients ESE, with concentrations contained in a smaller area than I think some feared would be otherwise.

10

Mopbucket_Wedding t1_j8p4aja wrote

BPD sucks. Bunch of racist, backwoods hicks that hosted a big ol' Trump women meet and greet at the freaking PD and regularly post insensitive, sh!t grammar BS that greatly highlights the shared 2 brain cells of the entire department.

3