000006876 001__ 6876
000006876 005__ 20240306132058.0
000006876 0247_ $$2DOI$$ahttps://doi.org/10.1029/2021JE006965
000006876 037__ $$aSCART-2024-0115
000006876 100__ $$aSenel, C.B.
000006876 245__ $$aInterannual, seasonal and regional variations in the Martian convective boundary layer derived from GCM simulations with a semi‐interactive dust transport model
000006876 260__ $$c2021
000006876 520__ $$aWe present interannual, seasonal, and regional variations in the daytime Martian convective boundary layer (CBL). Martian CBL meteorology is driven both by the effect of diurnal and seasonal cycles as well as complex Martian topography. One of the most important components of the Martian atmosphere is its dust cycle. Here, we develop a novel semi-interactive dust transport model within the MarsWRF framework, in which the dust is lifted, advected by model winds, mixed, and allowed to sediment, but is then scaled to match two-dimensional maps of the observed daily column-integrated dust opacity. This allows the vertical dust distribution and associated dust radiative heating to be controlled by model processes, while the horizontal dust distribution is constrained to follow observations. We report the impact of the dust cycle on Martian boundary layer meteorology. Enhanced dust transport lowers the global net surface heating rates, decreasing the turbulent mixing in CBL to virtually zero (within the dust storm season) and, enhances the wind shear on average by almost 50%. As a superposition of both impacts, during global dust storms (GDS) in Mars Year (MY) 25 and 34, we find that long-lasting extremely shallow daytime boundary layers can globally form as shallow as 0.5 km (but not for the less intense GDS in MY 28), unlike the 9 km deep and highly turbulent CBL formation at GDS onset and decay. Based on our GCM results, strong CBL suppression lasts as long as approximately 67 and 57 sols during GDS events in MY 25 and 34.
000006876 594__ $$aNO
000006876 700__ $$aTemel, O.
000006876 700__ $$aLee, C.
000006876 700__ $$aNewman, C.E.
000006876 700__ $$aMischna, M.A.
000006876 700__ $$aMuñoz‐Esparza, D.
000006876 700__ $$aSert, H.
000006876 700__ $$aKaratekin, Ö
000006876 773__ $$ce2021JE006965$$n10$$pJournal of Geophysical Research: Planets$$v126$$y2021
000006876 8560_ $$fcem.senel@ksb-orb.be
000006876 8564_ $$s10549636$$uhttp://publi2-as.oma.be/record/6876/files/JGR Planets - 2021 - Senel - Interannual  Seasonal and Regional Variations in the Martian Convective Boundary Layer Derived.pdf
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000006876 905__ $$apublished in
000006876 980__ $$aREFERD