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Is there a stratospheric pacemaker controlling the daily cycle of tropical rainfall?
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| Zeitschriftentitel: | Geophysical Research Letters |
|---|---|
| Personen und Körperschaften: | , , , |
| In: | Geophysical Research Letters, 44, 2017, 4, S. 1998-2006 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Geophysical Union (AGU)
|
| Schlagwörter: |
| author_facet |
Sakazaki, T. Hamilton, K. Zhang, C. Wang, Y. Sakazaki, T. Hamilton, K. Zhang, C. Wang, Y. |
|---|---|
| author |
Sakazaki, T. Hamilton, K. Zhang, C. Wang, Y. |
| spellingShingle |
Sakazaki, T. Hamilton, K. Zhang, C. Wang, Y. Geophysical Research Letters Is there a stratospheric pacemaker controlling the daily cycle of tropical rainfall? General Earth and Planetary Sciences Geophysics |
| author_sort |
sakazaki, t. |
| spelling |
Sakazaki, T. Hamilton, K. Zhang, C. Wang, Y. 0094-8276 1944-8007 American Geophysical Union (AGU) General Earth and Planetary Sciences Geophysics http://dx.doi.org/10.1002/2017gl072549 <jats:title>Abstract</jats:title><jats:p>Rainfall in the tropics exhibits a large, 12 h Sun‐synchronous variation with coherent phase around the globe. A long‐standing, but unproved, hypothesis for this phenomenon is excitation by the prominent 12 h atmospheric tide, which itself is significantly forced remotely by solar heating of the stratospheric ozone layer. We investigated the relative roles of large‐scale tidal forcing and more local effects in accounting for the 12 h variation of tropical rainfall. A model of the atmosphere run with the diurnal cycle of solar heating artificially suppressed below the stratosphere still simulated a strong coherent 12 h rainfall variation (~50% of control run), demonstrating that stratospherically forced atmospheric tide propagates downward to the troposphere and contributes to the organization of large‐scale convection. The results have implications for theories of excitation of tropical atmospheric waves by moist convection, for the evaluation of climate models, and for explaining the recently discovered lunar tidal rainfall cycle.</jats:p> Is there a stratospheric pacemaker controlling the daily cycle of tropical rainfall? Geophysical Research Letters |
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10.1002/2017gl072549 |
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Is there a stratospheric pacemaker controlling the daily cycle of tropical rainfall? |
| title_unstemmed |
Is there a stratospheric pacemaker controlling the daily cycle of tropical rainfall? |
| title_full |
Is there a stratospheric pacemaker controlling the daily cycle of tropical rainfall? |
| title_fullStr |
Is there a stratospheric pacemaker controlling the daily cycle of tropical rainfall? |
| title_full_unstemmed |
Is there a stratospheric pacemaker controlling the daily cycle of tropical rainfall? |
| title_short |
Is there a stratospheric pacemaker controlling the daily cycle of tropical rainfall? |
| title_sort |
is there a stratospheric pacemaker controlling the daily cycle of tropical rainfall? |
| topic |
General Earth and Planetary Sciences Geophysics |
| url |
http://dx.doi.org/10.1002/2017gl072549 |
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2017 |
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1998-2006 |
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<jats:title>Abstract</jats:title><jats:p>Rainfall in the tropics exhibits a large, 12 h Sun‐synchronous variation with coherent phase around the globe. A long‐standing, but unproved, hypothesis for this phenomenon is excitation by the prominent 12 h atmospheric tide, which itself is significantly forced remotely by solar heating of the stratospheric ozone layer. We investigated the relative roles of large‐scale tidal forcing and more local effects in accounting for the 12 h variation of tropical rainfall. A model of the atmosphere run with the diurnal cycle of solar heating artificially suppressed below the stratosphere still simulated a strong coherent 12 h rainfall variation (~50% of control run), demonstrating that stratospherically forced atmospheric tide propagates downward to the troposphere and contributes to the organization of large‐scale convection. The results have implications for theories of excitation of tropical atmospheric waves by moist convection, for the evaluation of climate models, and for explaining the recently discovered lunar tidal rainfall cycle.</jats:p> |
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| author | Sakazaki, T., Hamilton, K., Zhang, C., Wang, Y. |
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| author_sort | sakazaki, t. |
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| container_start_page | 1998 |
| container_title | Geophysical Research Letters |
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| description | <jats:title>Abstract</jats:title><jats:p>Rainfall in the tropics exhibits a large, 12 h Sun‐synchronous variation with coherent phase around the globe. A long‐standing, but unproved, hypothesis for this phenomenon is excitation by the prominent 12 h atmospheric tide, which itself is significantly forced remotely by solar heating of the stratospheric ozone layer. We investigated the relative roles of large‐scale tidal forcing and more local effects in accounting for the 12 h variation of tropical rainfall. A model of the atmosphere run with the diurnal cycle of solar heating artificially suppressed below the stratosphere still simulated a strong coherent 12 h rainfall variation (~50% of control run), demonstrating that stratospherically forced atmospheric tide propagates downward to the troposphere and contributes to the organization of large‐scale convection. The results have implications for theories of excitation of tropical atmospheric waves by moist convection, for the evaluation of climate models, and for explaining the recently discovered lunar tidal rainfall cycle.</jats:p> |
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| series | Geophysical Research Letters |
| source_id | 49 |
| spelling | Sakazaki, T. Hamilton, K. Zhang, C. Wang, Y. 0094-8276 1944-8007 American Geophysical Union (AGU) General Earth and Planetary Sciences Geophysics http://dx.doi.org/10.1002/2017gl072549 <jats:title>Abstract</jats:title><jats:p>Rainfall in the tropics exhibits a large, 12 h Sun‐synchronous variation with coherent phase around the globe. A long‐standing, but unproved, hypothesis for this phenomenon is excitation by the prominent 12 h atmospheric tide, which itself is significantly forced remotely by solar heating of the stratospheric ozone layer. We investigated the relative roles of large‐scale tidal forcing and more local effects in accounting for the 12 h variation of tropical rainfall. A model of the atmosphere run with the diurnal cycle of solar heating artificially suppressed below the stratosphere still simulated a strong coherent 12 h rainfall variation (~50% of control run), demonstrating that stratospherically forced atmospheric tide propagates downward to the troposphere and contributes to the organization of large‐scale convection. The results have implications for theories of excitation of tropical atmospheric waves by moist convection, for the evaluation of climate models, and for explaining the recently discovered lunar tidal rainfall cycle.</jats:p> Is there a stratospheric pacemaker controlling the daily cycle of tropical rainfall? Geophysical Research Letters |
| spellingShingle | Sakazaki, T., Hamilton, K., Zhang, C., Wang, Y., Geophysical Research Letters, Is there a stratospheric pacemaker controlling the daily cycle of tropical rainfall?, General Earth and Planetary Sciences, Geophysics |
| title | Is there a stratospheric pacemaker controlling the daily cycle of tropical rainfall? |
| title_full | Is there a stratospheric pacemaker controlling the daily cycle of tropical rainfall? |
| title_fullStr | Is there a stratospheric pacemaker controlling the daily cycle of tropical rainfall? |
| title_full_unstemmed | Is there a stratospheric pacemaker controlling the daily cycle of tropical rainfall? |
| title_short | Is there a stratospheric pacemaker controlling the daily cycle of tropical rainfall? |
| title_sort | is there a stratospheric pacemaker controlling the daily cycle of tropical rainfall? |
| title_unstemmed | Is there a stratospheric pacemaker controlling the daily cycle of tropical rainfall? |
| topic | General Earth and Planetary Sciences, Geophysics |
| url | http://dx.doi.org/10.1002/2017gl072549 |