Temperature and composition of Saturn's polar hot spots and hexagon.

Science (New York, N.Y.) 319:5859 (2008) 79-81

Authors:

LN Fletcher, PGJ Irwin, GS Orton, NA Teanby, RK Achterberg, GL Bjoraker, PL Read, AA Simon-Miller, C Howett, R de Kok, N Bowles, SB Calcutt, B Hesman, FM Flasar

Abstract:

Saturn's poles exhibit an unexpected symmetry in hot, cyclonic polar vortices, despite huge seasonal differences in solar flux. The cores of both vortices are depleted in phosphine gas, probably resulting from subsidence of air into the troposphere. The warm cores are present throughout the upper troposphere and stratosphere at both poles. The thermal structure associated with the marked hexagonal polar jet at 77 degrees N has been observed for the first time. Both the warm cyclonic belt at 79 degrees N and the cold anticyclonic zone at 75 degrees N exhibit the hexagonal structure.

A correlated-k model of radiative transfer in the near-infrared windows of Venus

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER 109:6 (2008) 1118-1135

Authors:

CCC Tsang, PGJ Irwin, FW Taylor, CF Wilson

Causal or casual link between the rise of nannoplankton calcification and an abrupt tectonically-driven atmospheric CO2 decline in the Late Triassic?

GEOCHIMICA ET COSMOCHIMICA ACTA 72:12 (2008) A315-A315

Authors:

Yves Godderis, Yannick Donnadieu, Colomban De Vargas, Raymond T Pierrehumbert, Gilles Dromart, Bas Van De Schootbrugge

Condensation in Titan's stratosphere during polar winter

ICARUS 197:2 (2008) 572-578

Authors:

R de Kok, PGJ Irwin, NA Teanby

Detection methods and properties of known exoplanets

Chapter in Exoplanets, Springer Verlag (2008)