| Symbol | Description | Uses |
| U2 | 3 |
| File | Line number | Procedure | Code |
| ./pkg/fizhi/fizhi_lsm.F | 1304 | RSURFP |
_RL U2, RSURF, HESAT |
| ./pkg/fizhi/fizhi_lsm.F | 1310 | RSURFP |
U2 = UM(ChNo) * U2FAC(ChNo) |
| ./pkg/fizhi/fizhi_lsm.F | 1312 | RSURFP |
RSURF = RDC(ChNo) / U2 + 26. + 6. / (1.E-20 + WET(ChNo))**2 |