added tests

tests/conftest.py

@@ -81,6 +81,12 @@ def pr_series():
     return _pr_series
 
 
+@pytest.fixture
+def evspsbl_series():
+    """Return precipitation time series."""
+    return partial(test_timeseries, variable="evspsbl")
+
+
 @pytest.fixture
 def prc_series():
     """Return convective precipitation time series."""

tests/test_atmos.py

@@ -656,3 +656,11 @@ def test_chill_portions(atmosds):
     # due to implementation details
     exp = [np.nan, 99.91534493, 92.5473925, 99.03177047, np.nan]
     np.testing.assert_allclose(cp.isel(location=0), exp, rtol=1e-03)
+
+
+def test_water_cycle_intensity(pr_series, evspsbl_series):
+    pr = pr_series(np.ones(31))
+    evspsbl = evspsbl_series(np.ones(31))
+
+    wci = atmos.water_cycle_intensity(pr=pr, evspsbl=evspsbl, freq="MS")
+    np.testing.assert_allclose(wci, 2 * 60 * 60 * 24 * 31)

tests/test_indices.py

@@ -3983,3 +3983,12 @@ def test_simple(self, sfcWind_series):
         pb = xci.wind_power_potential(b)
 
         np.testing.assert_array_almost_equal(pa, pb, decimal=6)
+
+
+class TestWaterCycleIntensity:
+    def test_simple(self, pr_series, evspsbl_series):
+        pr = pr_series(np.ones(31))
+        evspsbl = evspsbl_series(np.ones(31))
+
+        wci = xci.water_cycle_intensity(pr=pr, evspsbl=evspsbl, freq="MS")
+        np.testing.assert_allclose(wci, 2 * 60 * 60 * 24 * 31)

xclim/indices/_multivariate.py

@@ -1895,7 +1895,7 @@ def water_cycle_intensity(
     pr = convert_units_to(pr, evspsbl)
 
     # Water cycle intensity
-    wci = pr + evspsbl
+    wci = (pr + evspsbl).assign_attrs(units=pr.units)
     wci = rate2amount(wci)
     wci = wci.resample(time=freq).sum(dim="time").assign_attrs(units=wci.units)
     return wci