Function metfor::pft[−][src]

pub fn pft<H, P, S, TD, T>(
    z_fc: H, 
    p_fc: P, 
    mean_wind: S, 
    theta_diff: TD, 
    theta_fc: T, 
    p_sfc: P
) -> GigaWatts where
    Km: From<H>,
    MetersPSec: From<S>,
    KelvinDiff: From<TD>,
    Kelvin: From<T>,
    P: Quantity,
    HectoPascal: From<P>, 
Expand description

Calculate the Pyrocumulonimbus Firepower Threshold (PFT).

Output is in Giga Watts. The first reference below (Tory & Kepert, 2021) has most of the details about how to calculate the PFT, the other paper (Tory et. al, 2018) outlines the model in general.

References

Tory, K. J., & Kepert, J. D. (2021). Pyrocumulonimbus Firepower Threshold: Assessing the Atmospheric Potential for pyroCb, Weather and Forecasting, 36(2), 439-456. Retrieved Jun 2, 2021, from https://journals.ametsoc.org/view/journals/wefo/36/2/WAF-D-20-0027.1.xml

Tory, K. J., Thurston, W., & Kepert, J. D. (2018). Thermodynamics of Pyrocumulus: A Conceptual Study, Monthly Weather Review, 146(8), 2579-2598. Retrieved Jun 2, 2021, from https://journals.ametsoc.org/view/journals/mwre/146/8/mwr-d-17-0377.1.xml

Arguments

  • z_fc is the height above ground of the level of free convection. Equation 25, Tory & Kepert (2021).
  • p_fc is the pressure at z_fc. Equation 28, Tory & Kepert (2021).
  • mean_wind is the magnitude of the mean velocity (vector average). Equation 25, Tory & Kepert (2021).
  • theta_diff is the difference between the mixed layer potential temperature and the parcel potential temperature at the level of free convection. Equation 25, Tory & Kepert (2021).
  • theta_fc is the potential temperature at the level of free convection. Equation 26, Tory & Kepert (2021).
  • p_sfc is the surface pressure. Equation 28, Tory & Kepert (2021).