ASAR Variable Determination

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Formulas and expressions to Calculate "standard" variables

Temperature (°K)

• Reference: [1]

 $Temp = (T+300)((PB+P)/1000)^{2/7}$

Pressure (mB)

• Reference: | external reference ==

 $Pres = P + PB$

Relative Humidity (fraction)

• Reference: | external reference

 $H = \frac{q2}{(pq0 / psfc) e^{a2 \frac{t2 - a3}{t2 - a4}}}$
where:
   let pq0 = 379.90516
   let a2  =  17.2693882
   let a3  = 273.16
   let a4  =  35.86