Journal article
The Diurnal Cycle of Rainfall and Deep Convective Clouds Around Sumatra and the Associated MJO-Induced Variability During Austral Summer in Himawari-8
C Lopez-Bravo, CL Vincent, Y Huang, TP Lane
Journal of Geophysical Research Atmospheres | AMER GEOPHYSICAL UNION | Published : 2023
DOI: 10.1029/2023JD039132
Abstract
The effects of the diurnal cycle and large-scale atmospheric disturbances dominate rainfall and cloud variability in the Maritime Continent. This study examines the modulation of the Austral Summer diurnal cycle by the Madden–Julian Oscillation (MJO) using cloud populations through precipitation and deep convective cloud derived from satellite measurements. Using Rainfall Potential Areas from Himawari-8 Advanced Himawari Imager as a proxy for deep convection, our analysis shows that convective clouds are present ∼55% of the time over land in Sumatra during the afternoon and night. Cloud signatures reveal semi-diurnal structures of deep convective clouds off the West Coast of Sumatra. In cont..
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Grants
Awarded by College of Engineering, University of Wisconsin-Madison
Funding Acknowledgements
This work was funded by the Melbourne Research Scholarship and the Australian Research Council (ARC) Discovery Project DP190100786 for C. Lopez-Bravo and the ARC Centre of Excellence for Climate Extremes CE170100023 for C. Vincent, Y. Huang, and T. P. Lane. The production of derived-satellite data from Himawari-8 AHI for this research was undertaken on the NCI National Facility in Canberra, Australia, supported by the Australian Commonwealth Government. The authors wish to thank the three reviewers for their insightful feedback. The authors wish to thank the JMA Meteorological Satellite Center, The Bureau of Meteorology, Australia, and the CSPP Geo project (CIMSS-UW-Madison). Thanks also to Paola Petrelli of the University of Tasmania and Kelsey Druken of the Australian National University for assistance during the data set publication process.