# 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.
'''

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

t = 23.1
td = 12.5

height = (t - td) / (DALR-DPLR)
height = (int(height / LEVEL) + 1) * LEVEL

print height