ESS210B
Prof. Jin-Yi Yu
Polynomial
Fitting Method
qWe can use a polynomial function to fit the observational data and then
use this function to generate data
on regular grids.
qIn meteorological applications, up to thrid order polynomial have been used. But usually, quadratic
equation is sufficient for most purpose:
qThe problem now it to determine the values of the coefficients: a1, a2, …., and a6.
qIf we have 6 observations of h, then we can determine the 6 coefficients in the quadratic
polynomial function.
qWe can then use the polynomial function for gridding purpose.
