title: Molecular-scale temperature
text: # Molecular-scale temperature
  
  The molecular-scale temperature is the defining property of the U.S. Standard Atmosphere, 1962. It is defined by the relationship:
  
      $T_{m}(z)={\frac {M_{0}}{M(z)}}\cdot {T(z)}$
      $T_m(z)$ is molecular-scale temperature at altitude z;
      $M_0$ is molecular weight of air at sea level;
      M(z) is molecular weight of air at altitude z;
      T(z) is absolute temperature at altitude z.
  
  This is citation of the Technical Report of USAF from 1967.
  
  