308 TABLE 75 



POTENTIAL TEMPERATURE 



The potential temperature of dry air is the temperature acquired by the air when brought 

 adiabatically to a standard pressure of 1000 mb. 



e = T( im \ R/c ' 



where : 



6= potential temperature (°K.), 

 T = temperature of the air (°K.), 

 pz=z pressure (mb.), 

 R = gas constant for dry air, 

 c p = specific heat of dry air at constant pressure. 



/1000\#/cp 

 6 has been computed using the values of ( — - — J given in Table 77, where R/c P = 2/7. . 



Pressure — millibars 

 Tempera- , A • 



ture 1050 950 900 850 800 750 700 600 500 400 350 300 



•C. °K. "K. °K. "K. °K. °K. °K. °K. "K. °K. °K. °K. 



—89 259.8 



-88 261.2 



-87 262.6 



—86 264.0 



—85 265.4 



—84 266.8 



-83 268.2 



-82 269.7 



-81 271.1 



og 272 5 



-79 191.5 197.0 200.1 203.4 206.9 210.8 215.0 224.7 236.7 252.3 262.1 2719 



-78 192.5 198.0 201.1 204.4 208.0 211.9 216.1 225.8 237.9 253.6 263.4 275.3 



-77 193.4 199.1 202.2 205.5 209.1 213.0 217.2 227.0 239.1 254.9 264.8 276.7 



-76 194.4 200.1 203.2 206.5 210.1 214.1 218.3 228.1 240.3 256.2 266.1 278.1 



-75 195.4 201.1 204.2 207.6 211.2 215.1 219.4 229.3 241.6 257.5 267.5 279.5 



—74 196.4 202.1 205.3 208.6 212.3 216.2 220.5 230.4 242.8 258.8 268.8 280.9 



-73 197.4 203.1 206.3 209.7 213.3 217.3 221.6 231.6 244.0 260.1 270.2 282.3 



-72 198.4 204.1 207.3 210.7 214.4 218.4 222.7 232.8 245.2 261.4 271.5 283.8 



-71 199.4 205.2 208.3 211.8 215.5 219.5 223.9 233.9 246.4 262.7 272.9 285.2 



-70 200.3 206.2 209.4 212.8 216.5 220.6 225.0 235.1 247.7 264.0 274.2 286.6 



-69 201.3 207.2 210.4 213.9 217.6 221.7 226.1 236.2 248.9 265.3 275.6 288.0 



-68 202.3 208.2 211.4 214.9 218.7 222.7 227.2 237.4 250.1 266.6 276.9 289.4 



-67 203.3 209.2 212.5 216.0 219.7 223.8 228.3 238.5 251.3 267.9 278.3 290.8 



-66 204.3 210.2 213.5 217.0 220.8 224.9 229.4 239.7 252.5 269.2 279.6 292.2 



-65 205.3 211.2 214.5 218.0 221.9 226.0 230.5 240.9 253.7 270.5 281.0 293.6 



-64 206.3 212.3 215.6 219.1 222.9 227.1 231.6 242.0 255.0 271.8 282.3 295.0 



—63 207.3 213.3 216.6 220.1 224.0 228.2 232.7 243.2 256.2 273.1 283.7 296.5 



-62 208.2 214.3 217.6 221.2 225.1 229.3 233.8 244.3 257.4 274.4 285.0 297.9 



-61 209.2 215.3 218.7 222.2 226.1 230.3 234.9 245.5 258.6 275.7 286.4 299.3 



(continued) 



SMITHSONIAN METEOROLOGICAL TABLES 



