We investigated how the general circulation (Hadley cell, super-rotation) would look like in a shortwave-absorbing atmosphere. read more…

Fig6-overview


Atmospheric circulation on a warmer high obliquity planet could be drastically different from that on a cold one. As the meridional circulation turns from thermally indirect to thermally direct at high insolation, upper air zonal wind accelerates westward and cloud fraction drops. read more…

High-Obliquity-DaQiSuo.001.png


Shown below are stratospheric water vapor concentration for low and high obliquity planets. Stratosphere is much wetter under high obliquity, perhaps allowing water vapor that is evaporation originated to be detected from space. read more…

Fig2-levlat-Q-T.png

Why are high obliquity aquaplanets always warmer than low obliquity equivalents? read more…

Fig1-Ts-insolation


The bottom-amplified baroclinic eddies and thermally-indirect Hadley cell in a world with a reversed meridional temperature gradient, as expected under high obliquity.  read more…

baroclinic-unstable-mode-normal-reverse-gradient


Shown below is the zonal wind at 250mb when MJO-like forcing is applied to “B” window (left) and “C” window (right). MJO-like forcings at different longitudinal locations drive the SSWs to different fates by interaction with the mid-latitude stationary wave pattern.  read more…

Midlat-jet-response


Without a strong background zonal asymmetry, the Madden-Julian Oscillation could suppress Sudden Stratospheric Warmings. read more…

Climatology_response_MJO_2D


Sudden Stratospheric Warming frequency could double and polar vortex could get significantly weaker and warmer due to a stronger Madden-Julian Oscillation expected in a warmer climate. read more…

Climatology_response_MJO