A model for the relationship between tropical precipitation and column water vapor

MULLER CJ, Back LE, O’Gorman PA, Emanuel KA. 2009. A model for the relationship between tropical precipitation and column water vapor. Geophysical Research Letters. 36(16), L16804.


Journal Article | Published | English
Author
MULLER, Caroline JIST Austria; Back, Larissa E.; O'Gorman, Paul A.; Emanuel, Kerry A.
Abstract
Several observational studies have shown a tight relationship between tropical precipitation and column‐integrated water vapor. We show that the observed relationship in the tropics between column‐integrated water vapor, precipitation, and its variance can be qualitatively reproduced by a simple and physically motivated two‐layer model. It has previously been argued that features of this relationship could be explained by analogy with the theory of continuous phase transitions. Instead, our model explicitly assumes that the onset of precipitation is governed by a stability threshold involving boundary‐layer water vapor. This allows us to explain the precipitation‐humidity relationship over a broader range of water vapor values, and may explain the observed temperature dependence of the relationship.
Publishing Year
Date Published
2009-08-25
Journal Title
Geophysical Research Letters
Volume
36
Issue
16
Article Number
L16804
ISSN
IST-REx-ID

Cite this

MULLER CJ, Back LE, O’Gorman PA, Emanuel KA. A model for the relationship between tropical precipitation and column water vapor. Geophysical Research Letters. 2009;36(16). doi:10.1029/2009gl039667
MULLER, C. J., Back, L. E., O’Gorman, P. A., & Emanuel, K. A. (2009). A model for the relationship between tropical precipitation and column water vapor. Geophysical Research Letters. American Geophysical Union. https://doi.org/10.1029/2009gl039667
MULLER, Caroline J, Larissa E. Back, Paul A. O’Gorman, and Kerry A. Emanuel. “A Model for the Relationship between Tropical Precipitation and Column Water Vapor.” Geophysical Research Letters. American Geophysical Union, 2009. https://doi.org/10.1029/2009gl039667.
C. J. MULLER, L. E. Back, P. A. O’Gorman, and K. A. Emanuel, “A model for the relationship between tropical precipitation and column water vapor,” Geophysical Research Letters, vol. 36, no. 16. American Geophysical Union, 2009.
MULLER CJ, Back LE, O’Gorman PA, Emanuel KA. 2009. A model for the relationship between tropical precipitation and column water vapor. Geophysical Research Letters. 36(16), L16804.
MULLER, Caroline J., et al. “A Model for the Relationship between Tropical Precipitation and Column Water Vapor.” Geophysical Research Letters, vol. 36, no. 16, L16804, American Geophysical Union, 2009, doi:10.1029/2009gl039667.
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