hurricanedpcpt#

[dPcdt, dPcdthPahr] = hurricanedpcpt(Pc, dt, CalcMethod, dispout)

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 method
If CalcMethod=’forward’; then last element is zero
‘backward’: Calculate hurricane central pressure intensity change over time using backward difference method
If CalcMethod=’backward’; then first element is zero
‘central’: Calculate hurricane central pressure intensity change over time using central difference method
If 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#

%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]=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