diff --git a/src/metpy/constants/nounit.py b/src/metpy/constants/nounit.py
index 25d9f2cd22..2fd6e8a78f 100644
--- a/src/metpy/constants/nounit.py
+++ b/src/metpy/constants/nounit.py
@@ -7,10 +7,17 @@
 from ..units import units
 
 Rd = default.Rd.m_as('m**2 / K / s**2')
+Rv = default.Rv.m_as('m**2 / K / s**2')
 Lv = default.Lv.m_as('m**2 / s**2')
+Lf = default.Lf.m_as('m**2 / s**2')
+Ls = default.Ls.m_as('m**2 / s**2')
 Cp_d = default.Cp_d.m_as('m**2 / K / s**2')
+Cp_l = default.Cp_l.m_as('m**2 / K / s**2')
+Cp_v = default.Cp_v.m_as('m**2 / K / s**2')
+Cp_i = default.Cp_i.m_as('m**2 / K / s**2')
 zero_degc = units.Quantity(0., 'degC').m_as('K')
 sat_pressure_0c = default.sat_pressure_0c.m_as('Pa')
 epsilon = default.epsilon.m_as('')
 kappa = default.kappa.m_as('')
 g = default.g.m_as('m / s**2')
+T0 = default.T0.m_as('K')