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@@ 437-450 (lines=14) @@
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| 434 |
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"""Tests relative humidity from specific humidity.""" |
| 435 |
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p = 1013.25 * units.mbar |
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temperature = 20. * units.degC |
| 437 |
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q = 0.012 |
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rh = relative_humidity_from_specific_humidity(q, temperature, p) |
| 439 |
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assert_almost_equal(rh, 82.7145 * units.percent, 3) |
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| 442 |
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def test_cape_cin(): |
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"""Tests the basic CAPE and CIN calculation.""" |
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p = np.array([959., 779.2, 751.3, 724.3, 700., 269.]) * units.mbar |
| 445 |
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temperature = np.array([22.2, 14.6, 12., 9.4, 7., -38.]) * units.celsius |
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dewpoint = np.array([19., -11.2, -10.8, -10.4, -10., -53.2]) * units.celsius |
| 447 |
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parcel_prof = parcel_profile(p, temperature[0], dewpoint[0]) |
| 448 |
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cape, cin = cape_cin(p, temperature, dewpoint, parcel_prof) |
| 449 |
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assert_almost_equal(cape, 58.0368212 * units('joule / kilogram'), 6) |
| 450 |
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assert_almost_equal(cin, -89.8073512 * units('joule / kilogram'), 6) |
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| 452 |
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| 453 |
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def test_cape_cin_no_el(): |
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@@ 561-573 (lines=13) @@
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tmp[3, :] = 288. |
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tmpk = tmp * units.kelvin |
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isentlev = [296.] * units.kelvin |
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isentprs = isentropic_interpolation(isentlev, lev, tmpk, tmpk_out=True) |
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truetmp = 296. * units.kelvin |
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assert_almost_equal(isentprs[1], truetmp, 3) |
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def test_isentropic_pressure_p_increase_rh_out(): |
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"""Test calculation of isentropic pressure function, p increasing order.""" |
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lev = [85000., 90000., 95000., 100000.] * units.Pa |
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tmp = np.ones((4, 5, 5)) |
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tmp[0, :] = 288. |
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tmp[1, :] = 290. |
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tmp[2, :] = 292. |
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tmp[3, :] = 296. |
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tmpk = tmp * units.kelvin |
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rh = np.ones((4, 5, 5)) |
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rh[0, :] = 20. |
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@@ 525-537 (lines=13) @@
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tmp[3, :] = 296. |
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tmpk = tmp * units.kelvin |
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isentlev = [296.] * units.kelvin |
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isentprs = isentropic_interpolation(isentlev, lev, tmpk) |
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trueprs = 1000. * units.hPa |
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assert_almost_equal(isentprs[0], trueprs, 3) |
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def test_isentropic_pressure_adition_args(): |
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"""Test calculation of isentropic pressure function, additional args.""" |
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lev = [100000., 95000., 90000., 85000.] * units.Pa |
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tmp = np.ones((4, 5, 5)) |
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tmp[0, :] = 296. |
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tmp[1, :] = 292. |
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tmp[2, :] = 290. |
| 537 |
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tmp[3, :] = 288. |
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rh = np.ones((4, 5, 5)) |
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rh[0, :] = 100. |
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rh[1, :] = 80. |
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@@ 489-501 (lines=13) @@
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def test_most_unstable_parcel(): |
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"""Tests calculating the most unstable parcel.""" |
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levels = np.array([1000., 959., 867.9]) * units.mbar |
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temperatures = np.array([18.2, 22.2, 17.4]) * units.celsius |
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dewpoints = np.array([19., 19., 14.3]) * units.celsius |
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ret = most_unstable_parcel(levels, temperatures, dewpoints, depth=100 * units.hPa) |
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assert_almost_equal(ret[0], 959.0 * units.hPa, 6) |
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assert_almost_equal(ret[1], 22.2 * units.degC, 6) |
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assert_almost_equal(ret[2], 19.0 * units.degC, 6) |
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def test_isentropic_pressure(): |
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"""Test calculation of isentropic pressure function.""" |
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lev = [100000., 95000., 90000., 85000.] * units.Pa |
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tmp = np.ones((4, 5, 5)) |
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tmp[0, :] = 296. |
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tmp[1, :] = 292. |
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@@ 453-465 (lines=13) @@
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assert_almost_equal(cin, -89.8073512 * units('joule / kilogram'), 6) |
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| 453 |
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def test_cape_cin_no_el(): |
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"""Tests that CAPE works with no EL.""" |
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p = np.array([959., 779.2, 751.3, 724.3]) * units.mbar |
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temperature = np.array([22.2, 14.6, 12., 9.4]) * units.celsius |
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dewpoint = np.array([19., -11.2, -10.8, -10.4]) * units.celsius |
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parcel_prof = parcel_profile(p, temperature[0], dewpoint[0]).to('degC') |
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cape, cin = cape_cin(p, temperature, dewpoint, parcel_prof) |
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assert_almost_equal(cape, 0.08750805 * units('joule / kilogram'), 6) |
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assert_almost_equal(cin, -89.8073512 * units('joule / kilogram'), 6) |
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def test_cape_cin_no_lfc(): |
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"""Tests that CAPE is zero with no LFC.""" |
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p = np.array([959., 779.2, 751.3, 724.3, 700., 269.]) * units.mbar |
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temperature = np.array([22.2, 24.6, 22., 20.4, 18., -10.]) * units.celsius |
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dewpoint = np.array([19., -11.2, -10.8, -10.4, -10., -53.2]) * units.celsius |
Unidata /
MetPy
