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Section Contents
- Christopher Nankervis
- Broadband RT Simulation of the Top-of-Atmosphere Emission
- Colocation
- University Homepage
- Schools & departments
- School of GeoSciences
- Home Pages
- Christopher Nankervis
Broadband Radiative-Transfer Simulation of the Top-of-Atmosphere Longwave Emission [Model Layout]
*Please view my Microsoft Powerpoint (c) presentation on the "Radiative Effects of Tropical Ice Clouds"A-Train vertical transect from 35'S to 35'N, passing the Inter-tropical Convergence Zone (ITCZ)
Table Showing the Local Radiative Properties for Tropical Scenes:
(1) Longwave Forcing* for Low Cloud Removal (All scenes at Latitudes < 30 degrees, pressure > 316mb):
(a) Low Clouds, -18.8 + 10W/m*2 [ECMWF interim data for Cloud Liquid Water Content]
(2) Longwave Forcing* for High Cloud Removal (All scenes at Latitudes < 30 degrees, 61mbar < pressure < 261mbar):
(a) High Clouds, -14.1 + 10W/m*2 [EOS MLS (Aura) data for Ice Water Content]
(3) Longwave Forcing* for Water Vapour Removal (All scenes at Latitudes < 30 degrees, 61mbar < pressure < 1000mbar):
(a) Total Column Water Vapour, -63.0 + 10W/m*2 [EOS MLS (Aura) data for Water Vapour]
(2) Longwave Forcing* for High Cloud Removal (All scenes at Latitudes < 30 degrees, 61mbar < pressure < 261mbar):
(a) High Clouds, -14.1 + 10W/m*2 [EOS MLS (Aura) data for Ice Water Content]
(3) Longwave Forcing* for Water Vapour Removal (All scenes at Latitudes < 30 degrees, 61mbar < pressure < 1000mbar):
(a) Total Column Water Vapour, -63.0 + 10W/m*2 [EOS MLS (Aura) data for Water Vapour]
(4) Outgoing Longwave Radiation (Latitudes < 30 degrees) [RT Model]:
(a) Tropical Cumulonimbus plumes / Thick Cirrus, 213.7W/m*2 [225.1 + 20.8 W/m*2]; (b) Tropical Cumulonimbus outflows / Thin Cirrus, 246.9W/m*2 [249.7 + 12.6W/m*2]; (c) background tropical skies, 280.4W/m*2 [274.4 + 10.0W/m*2]
(5) Longwave Forcing for High Cloud Removal (Cloudy scenes at Latitudes < 30 degrees, 61mbar < pressure < 261mbar) [RT Model]:
(a) Thick Cirrus Plumes, -66.7W/m*2 [-49.3 + 23.1W/m*2]; (b) Thin Cirrus Outflows, -33.5W/m*2 [-24.7 + 16.1W/m*2]
(6) Longwave heating rates for "water vapour" in the upper troposphere (Cloudy scenes at Latitudes < 30 degrees, 61mbar < pressure < 261mbar):
(a) Tropical Cumulonimbus plumes / Thick Cirrus, 213.7W/m*2 [225.1 + 20.8 W/m*2]; (b) Tropical Cumulonimbus outflows / Thin Cirrus, 246.9W/m*2 [249.7 + 12.6W/m*2]; (c) background tropical skies, 280.4W/m*2 [274.4 + 10.0W/m*2]
(5) Longwave Forcing for High Cloud Removal (Cloudy scenes at Latitudes < 30 degrees, 61mbar < pressure < 261mbar) [RT Model]:
(a) Thick Cirrus Plumes, -66.7W/m*2 [-49.3 + 23.1W/m*2]; (b) Thin Cirrus Outflows, -33.5W/m*2 [-24.7 + 16.1W/m*2]
(6) Longwave heating rates for "water vapour" in the upper troposphere (Cloudy scenes at Latitudes < 30 degrees, 61mbar < pressure < 261mbar):
(a) Tropical Cumulonimbus plumes, 3.3 + 0.2Kelvin/day*1; (b) Tropical Cumulonimbus outflows, 2.8 + 0.1Kelvin/day*1
(7) Longwave heating rates for "Ice Water Content" in the upper troposphere (Cloudy scenes at Latitudes < 30 degrees, 61mbar < pressure < 261mbar):
(a) Tropical Cumulonimbus plumes, 4.08 + 0.63Kelvin/day*1; (b) Tropical Cumulonimbus outflows, 3.31 + 0.33Kelvin/day*1
*Forcing refers to instantaneous effect of removing an atmospheric component on the top-of-atmosphere outgoing longwave radiation
(7) Longwave heating rates for "Ice Water Content" in the upper troposphere (Cloudy scenes at Latitudes < 30 degrees, 61mbar < pressure < 261mbar):
(a) Tropical Cumulonimbus plumes, 4.08 + 0.63Kelvin/day*1; (b) Tropical Cumulonimbus outflows, 3.31 + 0.33Kelvin/day*1
*Forcing refers to instantaneous effect of removing an atmospheric component on the top-of-atmosphere outgoing longwave radiation