import numpy as np


#constants
DALR = 9.8 / 1000.
DPLR = 2.0 / 1000.
LEVEL = 100.


def brute_force_td(t, td):

    # proof of concept algorithm
    '''
     lift the 2 meter above ground air temperatures using a dry
     adiabatic lapse rate of 9.8 C per 1000 meters until it reaches
     the adjusted* 2m dew point temperature for the same grid cell.
    '''

    height = 0

    while t > td:
        t -= (DALR * LEVEL)
        td -= (DPLR * LEVEL)
        height += LEVEL

    return height

t = 23.1
td = 12.5

height = brute_force_td(t, td)

print height