   0.0 300.0 ! centre of warm bubble (m)
 150.0 ! inner radius of warm bubble (m)
  50.0 ! decay length "   "     "     " 
  0.50 ! temperature anomaly (K)
  60.0 640.0 ! centre of cold bubble (m)
   0.0 ! inner radius of cold bubble (m)
  50.0 ! decay length "   "     "     " 
 -0.15 ! temperature anomaly (K)
