The B Regional Dust Storm In The New Nasa Ames Mars Gcm.
C.M.L. Batterson, Bay Area Environmental Research Institute, Moffett Field, Ca, Usa (Courtney.M.Batterson@Nasa.Gov),
M.A.Kahre, Nasa Ames Research Center, Moffett Field, Ca, Usa, A.F.C. Bridger, Department Of Meteorology, San
Jose State University, San Jose, Ca, Usa, R.J.Wilson, Nasa Ames Research Center, Moffett Field, Ca, Usa,
R.A.Urata, Bay Area Environmental Research Institute, Moffett Field, Ca, Usa.

Introduction
The Thermal Emission Spectrometer (Tes) And The
Mars Climate Sounder (Mcs) Instruments Have Been Observing Global Dust And Temperature On Mars Twice Daily
For A Combined ∼12 Mars Years (Mys). Analysis Of
These Data By [5] Reveal Three Highly Repeatable, Regional
Scale Dust Events Occurring Annually During Years Lacking A Global Dust Storm (Gds). Named The "A," "B," And
"C" Storms In Seasonal Order, These Recurring Dust Storms
Develop In The Southern Hemisphere Of Mars During The
Perihelion Season (Ls =180°–360°) When Mars Is Closest
To The Sun And The Southern Hemisphere Experiences Summer [5]. The "A" And "C" Storms Occur In The Southern
Midlatitudes Where They Amplify The Hadley Circulation
Causing Dynamical Warming In The Northern Hemisphere.
In Contrast, The "B" Storm (Hereafter, B Storm) And Its Effects Are Entirely Confined To The South Pole [5]. All
Three Storms Are Large Enough To Inject Dust Above The