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Upper atmosphere influences weather near Earth's surface

Date:
January 30, 2010
Source:
American Geophysical Union
Summary:
To what extent does what's happening in the stratosphere, tens of kilometers above Earth, influence the weather in the troposphere, the layer of atmosphere that touches Earth? Researchers performed a series of forecast experiments using a general circulation model to study the role of the stratosphere in influencing tropospheric weather following sudden stratospheric warming events.

To what extent does what's happening in the stratosphere, tens of kilometers above Earth, influence the weather in the troposphere, the layer of atmosphere that touches Earth?

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Gerber et al. performed a series of forecast experiments using a general circulation model to study the role of the stratosphere in influencing tropospheric weather following sudden stratospheric warming events. It is known that the troposphere influences the stratosphere in driving these events, but scientists were unsure of whether the stratosphere actively influenced the troposphere.

The authors found that the stratosphere does indeed influence the troposphere, although this influence is weak and easily masked by tropospheric variability.

The results indicate that improved resolution in stratospheric simulations would probably lead to better weather forecasts.

The research appears in the journal Geophysical Research Letters.

Authors include E. P. Gerber, Center for Atmosphere Ocean Science, Courant Institute, New York University; C. Orbe and L. M. Polvani, Department of Applied Physics and Applied Mathematics and Department of Earth and Environmental Science, Columbia University.


Story Source:

The above story is based on materials provided by American Geophysical Union. Note: Materials may be edited for content and length.


Journal Reference:

  1. Gerber et al. Stratospheric influence on the tropospheric circulation revealed by idealized ensemble forecasts. Geophysical Research Letters, 2009; 36 (24): L24801 DOI: 10.1029/2009GL040913

Cite This Page:

American Geophysical Union. "Upper atmosphere influences weather near Earth's surface." ScienceDaily. ScienceDaily, 30 January 2010. <www.sciencedaily.com/releases/2010/01/100121164315.htm>.
American Geophysical Union. (2010, January 30). Upper atmosphere influences weather near Earth's surface. ScienceDaily. Retrieved March 30, 2015 from www.sciencedaily.com/releases/2010/01/100121164315.htm
American Geophysical Union. "Upper atmosphere influences weather near Earth's surface." ScienceDaily. www.sciencedaily.com/releases/2010/01/100121164315.htm (accessed March 30, 2015).

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