References

Arvidson, R. E., E. A. Guinness, H. J. Moore, J. Tillman, and S. D. Wall, Three Mars years: Viking Lander 1 imaging observations, Science, 222, 463-468, 1983.

Barnes, J. R., Midlatitude disturbances in the Martian atmosphere: A second Mars year, J. Atmos. Sci., 38, 225-234, 1981.

Hess, S. L., R. M. Henry, C. B. Leovy, J. A. Ryan, and J. E. Tillman, Meteorological results from the surface of Mars: Viking 1 and 2, J. Geophys. Res., 82, 4559-4574, 1977.

Hess, S. L., R. M. Henry, and J. E. Tillman, The seasonal variation of pressure on Mars as affected by the South Polar Cap, J. Geophys. Res., 84, 2923-2927, 1979.

Hess, S. L., J. A. Ryan, J. E. Tillman, R. M. Henry, and C. B. Leovy, The annual cycle of pressure on Mars measured by Viking Landers 1 and 2, Geophys. Res. Lett., 7, 197-200, 1980.

James, P. B., and G. R. North, The seasonal cycle of $\rm CO_2$ on Mars: An application of an energy balance climate model, J. Geophys. Res., 87, 10,271-10,283, 1982.

Leovy, C. B., Observations of Martian tides over two annual cycles, J. Atmos. Sci., 38, 30-39, 1981.

Leovy, C. B., and R. W. Zurek, Thermal tides and Martian dust storms: Direct evidence for coupling, J. Geophys. Res., 84(B6), 2956-2968, 1979.

Leovy, C. B., J. E. Tillman, W. R. Guest, and J. Barnes, Interannual variability of Martian weather, recent advances in planetary meteorology, in Proceedings of Seymour Hess Memorial Symposium, IUGG Hamburg 1983, edited by Garry Hunt, pp. 69-84, Cambridge University Press, New York, 1985.

Paige, D. A., and S. E. Wood, Modeling the Martian seasonal $\rm CO_2$ cycle, 1, Fitting the Viking Lander pressure curves, Icarus, 99, 15-27, 1992.

Ryan, J. A., and R. M. Henry, Mars atmospheric phenomena during major dust storms, as measured at surface, J. Geophys. Res., 84, 2821-2829, 1979.

Ryan, J. A., R. M. Henry, S. L. Hess, C. B. Leovy, J. E. Tillman, and C. Waleek, Mars meteorology: Three seasons at the surface, Geophys. Res. Lett., 5, 715-718, 1978.

Tillman, J. E., Dynamics of the boundary layer of Mars, in Proceedings of the Symposium on Planetary Atmospheres, pp. 145-149, Royal Society of Canada, Ottawa, Ontario, Canada, 1977.

Tillman, J. E., Martian meteorology and dust storms from Viking observations, in Proceedings of The Case for Mars II Conference, edited by Christopher P. McKay, pp. 333-342, Sci. Technol. Ser., vol. 62, American Astronautical Society, San Diego, Calif., 1985.

Tillman, J. E., Mars global atmospheric oscillations: Annually synchronized, transient normal mode oscillations and the triggering of global dust storms, J. Geophys. Res., 93(D8), 9433-9451, 1988.

Tillman, J. E., and W. R. Guest, Sol average pressure statistics, VL-1 microfiche, sols 1-2245, document, data listing, plots, ID: 075-075C-07I (VL-2 microfiche, sols 1-1050: 075-083C-07I) and VL-1 tape (document, data listing) ID: 075-075C-07J (VL-2 tape: 075-083C-07J), Natl. Space Sci. Data Cent., NASA Goddard Space Flight Cent., Greenbelt, Md., 1983.

Tillman, J. E., R. M. Henry, and S. L. Hess, Frontal systems during passage of the Martian North Polar hood over the Viking Lander 2 site prior to the first 1977 dust storm, J. Geophys. Res., 84, 2947-2955, 1979.

Wood, S. E., and D. A. Paige, Modeling the Martian seasonal $\rm CO_2$ cycle, 2, Interannual variability, Icarus, 99, 1-14, 1992.

Zurek, R. W., Inference of dust opacities for the 1977 Martian great dust storms from Viking Lander 1 pressure data, Icarus, 45, 202-215, 1981.

Zurek, R.W., Free and forced modes in the Martian atmosphere, J. Geophys. Res., 93, 9452-9462, 1988.

Zurek, R.W., J.R. Barnes, R. M. Haberle, J. B. Pollack, J.E. Tillman, and C.B. Leovy, Mars, in Dynamics of the Atmosphere of Mars, Chap. 26, pp. 835-933, University of Arizona Press, Tucson, 1992.

P. Guttorp, Department of Statistics, Mail Stop GN-22, University of Washington, Seattle, WA 98195.

N. C. Johnson and J. E. Tillman, Department of Atmospheric Sciences, Mail Stop AK-40, University of Washington, Seattle, WA 98195.

D. B. Percival, Applied Physics Laboratory and Department of Statistics, Mail Stop HN-10, University of Washington, Seattle WA 98105.

Copyright 1993 by the American Geophysical Union