scientimate.hurricanedpcpt#
dPcdt, dPcdthPahr = scientimate.hurricanedpcpt(Pc, dt=6*3600, CalcMethod='backward', dispout='no')
Description#
Calculate hurricane central pressure (Pc) intensity change over time (dPc/dt)
Inputs#
- Pc
Hurricane central surface pressure in (Pa)
- dt=6*3600
- Time interval between pressure data points in (s)National Hurricane Center reports data every 6 hours
- CalcMethod=’backward’
- Calculation method‘forward’: Calculate hurricane central pressure intensity change over time using forward difference methodIf CalcMethod=’forward’; then last element is zero‘backward’: Calculate hurricane central pressure intensity change over time using backward difference methodIf CalcMethod=’backward’; then first element is zero‘central’: Calculate hurricane central pressure intensity change over time using central difference methodIf CalcMethod=’central’; then first and last elements are zero
- dispout=’no’
Define to display outputs or not (‘yes’: display, ‘no’: not display)
Outputs#
- dPcdt
Hurricane central pressure (Pc) intensity change (dPc/dt) in (Pa/s)
- dPcdthPahr
Hurricane central pressure (Pc) intensity change (dPc/dt) in (hPa/hr)
Examples#
import scientimate as sm
#Hurricane Katrina centeral pressure (Pa)
Pc=[100800,100700,100700,100600,100300,100000,99700,99400,98800,98400,98300,98700,\
97900,96800,95900,95000,94200,94800,94100,93000,90900,90200,90500,91300,\
92000,92300,92800,94800,96100,97800,98500,99000,99400,99600]
dPcdt,dPcdthPahr=sm.hurricanedpcpt(Pc,6*3600,'backward','yes')
References#
Data
www.nhc.noaa.gov/data/
www.nhc.noaa.gov/data/hurdat/hurdat2-format-nencpac.pdf
coast.noaa.gov/hurricanes
www.aoml.noaa.gov/hrd/data_sub/re_anal.html