The northern Australian rainy season is part of the Asian-Australian monsoon system and occurs during the Austral summer across the northern regions of the continent. The Australian monsoon is responsible for most of the annual rainfall budget for the region, thus having a compr…
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The importance of Indian Ocean circulation dynamics to the regional and global weather signatures is increasingly recognized at large partly due to improved ocean observations in the last few decades. Observational and modeling efforts are directed towards understanding the impa…
This study investigates the space-time evolution of the dominant modes that constitute the Asian summer monsoon (ASM), and, as an ultimate goal, the climate prediction of the ASM rainfall. Precipitation and other synoptic variables during the prominent life cycle of the ASM (May…
Indian Ocean SST and precipitation in the littoral regions of the Indian Ocean are examined with the aim of assessing predictability of precipitation in regions with critical socio-economic impact. Empirical relationships are found to varying degrees and with differing degrees o…
Agricultural practice in Bangladesh is largely dependent on the monsoonal rainfall. Historical data show that Bangladesh experienced severe droughts and floods during monsoon months. Crop losses were reported under both of these extreme conditions. Intra-seasonal monsoonal rainf…
Short-term (1 to 10 day) forecasts were developed as part of the Climate Forecasting Applications for Bangladesh (CFAB) project aimed at providing operational real-time forecasts of river discharge into Bangladesh. For the last two monsoon seasons CFAB has disseminated operation…
This study investigates the most recurrent coupled pattern of interannual variability between the Northern Hemisphere mid-latitude circulation and the tropical convection (between 15°S and 30°N) during the northern summer (June to September). The leading singular value decomposi…
Over the past several decades, the Horn of Africa has been ravaged by catastrophic droughts and famines. In spite of the devastating frequent droughts and occasional floods in the region, our understanding of the region's weather and climate variability is limited. The present s…
Evapotranspiration is a nexus for planetary energy and carbon cycles, as yet poorly constrained. Here I use stable isotopes of oxygen and hydrogen to partition flux of water due to plant transpiration from the direct evaporative flux from soils, water bodies and plant. The study…
This thesis develops two statistical models to predict Ganges river discharge at Hardinge Bridge in Bangladesh near India/Bangladesh border using only the previous local flow and upstream rainfall. Current operational flood forecasting in Bangladesh provides no more than 3-day l…