Climate dynamics

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The Advection–Diffusion Problem for Stratospheric Flow. Part I: Concentration Probability Distribution Function

Journal of the Atmospheric Sciences American Meteorological Society 58:12 (2001) 1493-1510

Authors:

Y Hu, RT Pierrehumbert
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A new approach to stable isotope-based paleoaltimetry: implications for paleoaltimetry and paleohypsometry of the High Himalaya since the Late Miocene

Earth and Planetary Science Letters Elsevier 188:1-2 (2001) 253-268

Authors:

David B Rowley, Raymond T Pierrehumbert, Brian S Currie
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The quasi‐biennial oscillation

Reviews of Geophysics American Geophysical Union (AGU) 39:2 (2001) 179-229

Authors:

MP Baldwin, LJ Gray, TJ Dunkerton, K Hamilton, PH Haynes, WJ Randel, JR Holton, MJ Alexander, I Hirota, T Horinouchi, DBA Jones, JS Kinnersley, C Marquardt, K Sato, M Takahashi
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Impact of ocean dynamics on the simulation of the neoproterozoic “snowball Earth”

Geophysical Research Letters American Geophysical Union (AGU) 28:8 (2001) 1575-1578

Authors:

Christopher J Poulsen, Raymond T Pierrehumbert, Robert L Jacob
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A possible mechanism for in situ forcing of planetary waves in the summer extratropical mesosphere

Geophysical Research Letters 28:7 (2001) 1183-1186

Authors:

SM Osprey, BN Lawrence

Abstract:

An examination of zonal asymmetries in meridional momentum flux reaching the mesosphere is made using the Hines Doppler spread parameterization of gravity waves. As expected a general correspondence is seen between wave one wind in the stratosphere and wave one signals in gravity wave momentum flux leaving the stratosphere. However, a significant difference is the presence of wave one features in the gravity-wave momentum flux at 56 km and ∼70°N during mid-summer which contrast with minimal signals in stratospheric wave one wind. The prominence of this feature is accounted for by a significant wave one Brunt-Väisälä feature at the tropopause amplifying a wave one signal in momentum flux which can then propagate to great heights. Such a feature could result in mesospheric planetary waves which are coupled to the tropopause forcing without intervening planetary wave signals in the stratosphere.
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