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Update about page: ten factors, mention PWAT and native duct detection

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Graham McIntire 2026-04-11 13:52:25 -05:00
parent 0448ff47cc
commit bac0bc3a98
1 changed files with 7 additions and 6 deletions
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lib/microwaveprop_web/live/about_live.ex
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@ -81,12 +81,13 @@ defmodule MicrowavepropWeb.AboutLive do
</li> </li>
</ol> </ol>
<p> <p>
The scoring is a weighted sum of nine factors: humidity, time of The scoring is a weighted sum of ten factors: rain, humidity,
day, T–Td depression, refractivity gradient, sky cover, season, rain, precipitable water (PWAT), season, refractivity gradient, pressure,
wind, pressure. The weights are band-dependent because the physics T–Td depression, sky cover, wind, and time of day. Weights were
changes as you go up: humidity helps at 10 GHz (more refractivity) calibrated via gradient descent against 5,000 QSOs. The physics
and hurts at 24+ GHz (absorption). Every coefficient is a hypothesis changes by frequency: humidity helps at 10 GHz (more refractivity)
I'm checking against the contact and beacon data. and hurts at 24+ GHz (absorption). Refractivity now uses native
HRRR hybrid-sigma levels (10–50 m resolution) for duct detection.
</p> </p>
</div> </div>