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The atmosphere of Mars

JBIS Journal of the British Interplanetary Society 52:5-6 (1999) 209-216

Authors:

PGJ Irwin, SB Calcutt, FW Taylor, DJ McCleese

Abstract:

Mars, one of the most Earth-like of the planets, is today a cold, dry and barren world. However, there is good evidence that it may have been much warmer and wetter in the past and perhaps even supported life. The public interest aroused by these findings and by recent studies of 'SNC' meteorites, believed to have come from Mars, with their claims of the evidence of ancient Martian life, has focused attention on the ambitious programme of Mars Exploration currently being undertaken by NASA and ESA and has provided additional impetus. Improved measurements of the conditions on Mars' surface and in its atmosphere are central to both agencies' plans, and current atmospheric missions are reviewed in this paper together with possible future designs.

Network science landers for Mars

Advances in Space Research Elsevier 23:11 (1999) 1915-1924

Authors:

A-M Harri, O Marsal, P Lognonne, GW Leppelmeier, T Spohn, K-H Glassmeier, F Angrilli, WB Banerdt, JP Barriot, J-L Bertaux, JJ Berthelier, S Calcutt, JC Cerisier, D Crisp, V Dehant, D Giardini, R Jaumann, Y Langevin, M Menvielle, G Musmann, JP Pommereau, S Di Pippo, D Guerrier, K Kumpulainen, S Larsen, A Mocquet, J Polkko, J Runavot, W Schumacher, T Siili, J Simola, JE Tillman, NetLander Team
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Band parameters and k coefficients for self-broadened ammonia in the range 4000-11000 cm-1

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER 62:2 (1999) 193-204

Authors:

PGJ Irwin, SB Calcutt, K Sihra, FW Taylor, AL Weir, J Ballard, WB Johnston
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Jovian atmospheric studies with the Galileo near infrared mapping spectrometer: An update

ADV SPACE RES 23:9 (1999) 1623-1632

Authors:

PGJ Irwin, FW Taylor, RW Carlson, KH Baines, A Weir, P Cameron-Smith, S Calcutt, T Encrenaz, P Drossart, M Roos-Serote, E Lellouch

Abstract:

In its first two years of operation since arrival at Jupiter in December 1995, the Near Infrared Mapping spectrometer (NIMS) on the Galileo orbiter spacecraft obtained extensive coverage of the planet, including detailed coverage of the north equatorial belt (NEB) 'hot spot' region and the Great Red Spot. We will present the current state of data analysis including recent results on the abundances and variability of several minor constituents (H2O, CH4, NH3, GeH4, CH3D and PH3) and the cloud structure and morphology. (C) 1999 COSPAR. Published by Elsevier Science Ltd.
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Investigation of Saturn's atmosphere by Cassini

PLANET SPACE SCI 46:9-10 (1998) 1315-1324

Authors:

FW Taylor, SB Calcutt, PGJ Irwin, CA Nixon, PL Read, PJC Smith, TJ Vellacott

Abstract:

This paper considers the rationale for the exploration of Saturn's atmosphere by the Cassini mission, taking account of the key scientific questions posed by the earlier investigation by Voyager, and the capabilities of the instrumentation making up the Cassini payload. While by no means all objectives can be addressed by this particular configuration, in particular without a Saturn entry probe, if everything goes according to plan important progress should be possible on a number of key objectives. (C) 1998 Elsevier Science Ltd. All rights reserved.
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