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  • Atmosphere-land interactions x
  • Journal of the Atmospheric Sciences x
  • Air–Sea Interactions from the Diurnal to the Intraseasonal during the PISTON, MISOBOB, and CAMP2Ex Observational Campaigns in the Tropics x
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Emily M. Riley Dellaripa, Eric D. Maloney, Benjamin A. Toms, Stephen M. Saleeby, and Susan C. van den Heever

of topography. Low-resolution simulations (12-km grid spacing) with parameterized convection only captured the eastward propagation of the MJO over the MC in the absence of topography. Other papers have shown that explicitly resolving topography with higher-resolution models leads to improved MJO characteristics (e.g., Rajendran et al. 2008 ; Liu et al. 2009 ). Though a similar weakening of BSISO convection or disruption to BSISO propagation through land and topography interaction has not

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Michael B. Natoli and Eric D. Maloney

) presented field observations that showed an extremely regular diurnal cycle over both land and ocean near Borneo. Across the MC region, differential daytime heating between land and water due to the difference in heat capacity leads to sea-breeze circulations that converge near the center of the islands, and combine with mountain–valley breezes to enhance convection over mountains ( Qian 2008 ). Cells begin to merge and organize, particularly over larger islands, leading to a late afternoon peak in

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Benjamin A. Toms, Susan C. van den Heever, Emily M. Riley Dellaripa, Stephen M. Saleeby, and Eric D. Maloney

-scale interactions within the MJO. By permitting the direct representation of cloud formation, the environments within which clouds form can be analyzed according to the governing physics of the atmosphere, rather than via convective parameterizations as is typically the case in global circulation models ( Zhang and Mu 2005 ; Jiang et al. 2015 ; Moncrieff et al. 2012 ). We therefore simulate a boreal summer MJO event propagating over the Maritime Continent using a CRM to investigate whether any relationships

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