Evidence for the role of the diabatic heating in synoptic scale processes: a case study example
The quasigeostrophic theory is used to address the role of diabatic forcing in synoptic scale processes over Iberia. A parametrization of diabatic heating is obtained in terms of a thermodynamic variable called the ice-liquid water potential temperature which is conservative under all phase chan...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
1997-04-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/15/487/1997/angeo-15-487-1997.pdf |
| Summary: | The quasigeostrophic theory is used to
address the role of diabatic forcing in synoptic scale processes over Iberia. A
parametrization of diabatic heating is obtained in terms of a thermodynamic
variable called the ice-liquid water potential temperature which is conservative
under all phase changes of water. A case study objectively selected by means of
a rotated principal component analysis over the diabatic field is analyzed to
test the proposed parametrization. This study highlights the fact that the
magnitudes of diabatic forcing and dynamic forcing are very nearly the same
throughout the troposphere. The results also show that the composite diabatic
heating is a better representation for both cloudiness and precipitation fields
than the dynamic forcing. |
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| ISSN: | 0992-7689 1432-0576 |