$($analogous to Holton $2\mathrm{.}2)$ The temperature at a point $50$ km south of the

station is $40$C warmer than at the station. If the wind is blowing from the southwest at $15$

m s$-1$ and the air is being heated by radiation at the rate of $1\mathrm{.}50$C hour$-1,$ what is the local

temperature change at the station?