Adding custom variables for cloud study

esmvalcore/cmor/tables/custom/CMOR_coordinates.dat

@@ -104,3 +104,47 @@ type:             double
 must_have_bounds: yes
 !----------------------------------
 !
+
+!============
+axis_entry: p700
+!============
+!----------------------------------
+! Axis attributes:
+!----------------------------------
+standard_name:    air_pressure
+units:            Pa
+axis:             Z             ! X, Y, Z, T (default: undeclared)
+positive:         down         ! up or down (default: undeclared)
+long_name:        pressure
+!----------------------------------
+! Additional axis information:
+!----------------------------------
+out_name:         plev
+stored_direction: decreasing
+type:             double
+value:            70000.            ! of scalar (singleton) dimension
+must_have_bounds: no
+!----------------------------------
+!
+
+!============
+axis_entry: p1000
+!============
+!----------------------------------
+! Axis attributes:
+!----------------------------------
+standard_name:    air_pressure
+units:            Pa
+axis:             Z             ! X, Y, Z, T (default: undeclared)
+positive:         down         ! up or down (default: undeclared)
+long_name:        pressure
+!----------------------------------
+! Additional axis information:
+!----------------------------------
+out_name:         plev
+stored_direction: decreasing
+type:             double
+value:            100000.            ! of scalar (singleton) dimension
+must_have_bounds: no
+!----------------------------------
+!

esmvalcore/cmor/tables/custom/CMOR_ctp.dat

@@ -0,0 +1,19 @@
+SOURCE: CMIP5
+!============
+variable_entry:    ctp
+!============
+modeling_realm:    atmos
+!----------------------------------
+! Variable attributes:
+!----------------------------------
+standard_name:
+units:             hPa
+cell_methods:      time: mean
+cell_measures:     area: areacella
+long_name:         Cloud Top Pressure
+!----------------------------------
+! Additional variable information:
+!----------------------------------
+dimensions:        longitude latitude time
+type:              real
+!----------------------------------

esmvalcore/cmor/tables/custom/CMOR_reff.dat

@@ -0,0 +1,19 @@
+SOURCE: CMIP6
+!============
+variable_entry:    reff
+!============
+modeling_realm:    atmos
+!----------------------------------
+! Variable attributes:
+!----------------------------------
+standard_name:
+units:             um
+cell_methods:      time: mean
+cell_measures:     area: areacella
+long_name:         Cloud Effective Radius
+!----------------------------------
+! Additional variable information:
+!----------------------------------
+dimensions:        longitude latitude time
+type:              real
+!----------------------------------

esmvalcore/cmor/tables/custom/CMOR_ta1000.dat

@@ -0,0 +1,21 @@
+SOURCE: CMIP5
+!============
+variable_entry:    ta1000
+!============
+modeling_realm:    atmos
+!----------------------------------
+! Variable attributes:
+!----------------------------------
+standard_name:     air_temperature
+units:             K
+cell_methods:      time: mean
+cell_measures:     area: areacella
+long_name:         Air Temperature at 1000hPa
+!----------------------------------
+! Additional variable information:
+!----------------------------------
+dimensions:        longitude latitude time p1000
+out_name:          ta1000
+type:              real
+!----------------------------------
+!

esmvalcore/cmor/tables/custom/CMOR_wap700.dat

@@ -0,0 +1,22 @@
+SOURCE: CMIP5
+!============
+variable_entry:    wap700
+!============
+modeling_realm:    atmos
+!----------------------------------
+! Variable attributes:
+!----------------------------------
+standard_name:     lagrangian_tendency_of_air_pressure
+units:             Pa s-1
+cell_methods:      time: mean
+cell_measures:     area: areacella
+long_name:         Omega (=dp/dt) at 700hPa
+comment:           at 700 hPa level; commonly referred to as ""omega"", this represents the vertical component of velocity in pressure coordinates (positive down)
+!----------------------------------
+! Additional variable information:
+!----------------------------------
+dimensions:        longitude latitude time p700
+out_name:          wap700
+type:              real
+!----------------------------------
+!

tests/integration/cmor/test_table.py

@@ -494,6 +494,42 @@ def test_get_variable_tosStderr(self):
                          'Sea Surface Temperature Error')
         self.assertEqual(var.units, 'K')
 
+    def test_get_variable_ctp(self):
+        """Get ctp variable."""
+        CustomInfo()
+        var = self.variables_info.get_variable('day', 'ctp')
+        self.assertEqual(var.short_name, 'ctp')
+        self.assertEqual(var.long_name,
+                         'Cloud Top Pressure')
+        self.assertEqual(var.units, 'hPa')
+
+    def test_get_variable_reff(self):
+        """Get reff variable."""
+        CustomInfo()
+        var = self.variables_info.get_variable('day', 'reff')
+        self.assertEqual(var.short_name, 'reff')
+        self.assertEqual(var.long_name,
+                         'Cloud Effective Radius')
+        self.assertEqual(var.units, 'um')
+
+    def test_get_variable_ta1000(self):
+        """Get ta1000 variable."""
+        CustomInfo()
+        var = self.variables_info.get_variable('day', 'ta1000')
+        self.assertEqual(var.short_name, 'ta1000')
+        self.assertEqual(var.long_name,
+                         'Air Temperature at 1000hPa')
+        self.assertEqual(var.units, 'K')
+
+    def test_get_variable_wap700(self):
+        """Get wap700 variable."""
+        CustomInfo()
+        var = self.variables_info.get_variable('day', 'wap700')
+        self.assertEqual(var.short_name, 'wap700')
+        self.assertEqual(var.long_name,
+                         'Omega (=dp/dt) at 700hPa')
+        self.assertEqual(var.units, 'Pa s-1')
+
 
 @pytest.mark.parametrize(
     'project,mip,short_name,frequency',