Exploring Martian polar atmospheric circulation and surface interactions

Assimilating Martian Atmospheric Constituents Using a Global Circulation

Assimilating Martian atmospheric constituents using a gobal circulation model

Copyright and Moral Rights for the articles on this site are retained by the individual authors and/or other copyright owners. For more information on Open Research Online's data policy on reuse of materials please consult the policies page. Introduction: The technique of data assimilation is employed in a novel way for a planetary atmosphere to perform a complete spatial and temporal analysis ...

Principal modes of variability of Martian atmospheric surface pressure

[1] An analysis of daily-to-interannual variability in the surface pressure field of the Martian nothern hemisphere as given by a Martian climate model is presented. In an empirical orthogonal function (EOF) decomposition, the dominant first two modes of variability comprise a zonal wavenumber 1 feature centered at 70 N latitude moving eastward with a period of 6 to 8 sols. This feature is a ba...

Interactions between Global SST Anomalies and the Midlatitude Atmospheric Circulation

On account of the large thermal capacity of seawater and the slowly varying oceanic currents, the surface conditions of the world’s oceans typically fluctuate on timescales that are much longer than those of the atmosphere. Meteorologists have long regarded the surface properties of the oceans (in particular, sea surface temperature, or SST) as a prime candidate for inciting low-frequency atmos...

Modelling Martian dust storms: feedbacks between dust and atmospheric circulation at a hierarchy of scales

We employ numerical models of Mars at spatial scales ranging from global to a few metres in order to investigate both the impact of increasing dust loading on atmospheric circulations and the role of different atmospheric circulation components on dust lifting, transport and on dust storm decay. Figure 1: Typical dust lifting events, relevant spatial scales and meteorological models suitable fo...