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SUMMARY:Climate dynamics of subNeptunes - Professor Raymond Pierrehumbert 
 (Univ. of Oxford)
DTSTART:20220506T113000Z
DTEND:20220506T123000Z
UID:TALK172295@talks.cam.ac.uk
CONTACT:99736
DESCRIPTION:subNeptunes are low-density planets that are generally somewha
 t larger in radius than Earth but still considerably smaller than Uranus o
 r Neptune. Their low densities mean that they cannot be composed primarily
  of rock an Iron (like Earth or Venus) but must instead have a very extens
 ive low molecular weight volatile envelope.  There are nonetheless many po
 ssible compositions and structures that can fit into the characteristics o
 f a subNeptune. subNeptunes are very common in the catalogue of known exop
 lanets\, and they may well be the most common kind of planet in the Univer
 se.  Temperate subNeptunes are subNeptunes that have an installation that\
 , for a rocky planet\, would put them in the nominal habitable zone\, and 
 they have attracted attention in part because of the hypothetical possibil
 ity of life in water clouds\; water vapour condensation also makes them in
 teresting from a basic dynamical standpoint.  In this talk\, I will discus
 s the radial structure of subNeptunes\, the meaning of the concept of “r
 unaway greenhouse” as applied to subNeptunes\, and the general circulati
 on of temperate subNeptune atmospheres.
LOCATION:CUED\, LR4
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