Browsing by Author "Nagai, T."
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Item Detecting Change in the Indonesian Seas(Frontiers in Marine Science, 2019-06-04) Ansong, J.K.; Sprintall, J.; Gordon, A.L.; Wijffels, S.E.; Feng, M.; Hu, S.; Koch-Larrouy, A.; Phillips, H.; Nugroho, D.; Napitu, A.; Pujiana, K.; Susanto, R.D.; Sloyan, B.; Peña-Molino, B.; Yuan, D.; Riama, N.F.; Siswanto, S.; Kuswardani1, A.; Arifin, Z.; Wahyudi, A.J.; Zhou, H.; Nagai, T.; Bourdalle-Badié, R.; Chanut, J.; Lyard, F.; Arbic, B.K.; Ramdhani, A.; Setiawan, A.The Indonesian seas play a fundamental role in the coupled ocean and climate system with the Indonesian Throughflow (ITF) providing the only tropical pathway connecting the global oceans. Pacific warm pool waters passing through the Indonesian seas are cooled and freshened by strong air-sea fluxes and mixing from internal tides to form a unique water mass that can be tracked across the Indian Ocean basin and beyond. The Indonesian seas lie at the climatological center of the atmospheric deep convection associated with the ascending branch of the Walker Circulation. Regional SST variations cause changes in the surface winds that can shift the center of atmospheric deep convection, subsequently altering the precipitation and ocean circulation patterns within the entire Indo-Pacific region. Recent multi-decadal changes in the wind and buoyancy forcing over the tropical Indo-Pacific have directly affected the vertical profile, strength, and the heat and freshwater transports of the ITF. These changes influence the largescale sea level, SST, precipitation and wind patterns. Observing long-term changes in mass, heat and freshwater within the Indonesian seas is central to understanding the variability and predictability of the global coupled climate system. Although substantial progress has been made over the past decade in measuring and modeling the physical and biogeochemical variability within the Indonesian seas, large uncertainties remain. A comprehensive strategy is needed for measuring the temporal and spatial scales of variability that govern the various water mass transport streams of the ITF, its connectionwith the circulation and heat and freshwater inventories and associated air-sea fluxes of the regional and global oceans. This white paper puts forward the design of an observational array using multi-platforms combined with high-resolution models aimed at increasing our quantitative understanding of water mass transformation rates and advection within the Indonesian seas and their impacts on the air-sea climate system.Item Locally processed roasted-maize based weaning foods Fortified with legumes: factors affecting their availability and competitiveness in Accra, Ghana(African Journal of Food Agriculture, Nutrition and Development (AJFAND) 9(9): 1945-1965, 2009) Nagai, T.; Staaz, J.M.; Bernsten, R.H.; Sakyi-Dawson, E.; Annor, G.A.Tom Brown (roasted-maize porridge) is one of the traditional weaning foods in Ghana. As an effort by the Ministry of Health to enhance the nutrient content of this low nutrient- density weaning food, a product called weanimix, which is Tom Brown fortified with legumes (cowpeas or soybeans and groundnuts), was introduced more than two decades ago. Cowpeas are an indigenous African legume, popularly used by Ghanaians for various traditional dishes. While soybeans are not traditionally used, they can easily be incorporated into local diets. Commercial weanimix-type products in ready-to-cook flour form are currently available mainly at supermarkets, which target higher-income consumers. This paper examined: (1) the competitiveness between cowpeas and soybeans as an ingredient in weanimix; and (2) constraints to making weanimix more widely available to lower-income families. Local food processors, weaning mothers, commercial custom millers, and retailers were interviewed for both qualitative and quantitative data. Secondary price data were collected from different sources including the Ministry of Food and Agriculture. Descriptive analysis was carried out to address non-price factors of the issues, and enterprise budgeting and sensitivity analyses were conducted to address price factors. The study found that the higher price of cowpeas, compared to soybeans, is a minor factor in local processors’ choice between cowpeas and soybeans. Rather, the current overwhelmingly popular use of soybeans in the weanimix-type products among the respondents was attributed to non-price factors such as the perception that soybeans are more nutritious. A main reason for the lack of availability of weanimix for mothers from lower-income families appeared to be low awareness of the product among consumers. The results of sensitivity analysis showed that typical differences in prices currently observed between weanimix-type products and Tom Brown seems to be larger than the difference in the cost of production between these products. It was also shown that the level of processing and retail margins greatly affect the retail prices of weanimix. Weanimix could be made more available to lower-income consumers if local companies expanded their outlet for the product from supermarkets to small shops or if grain and flour-type product vendors in the local markets (who currently prepare and sell Tom Brown) produced and sold weanimix. However, actions would need to be taken to help assure consumers of the quality of the product sold through market vendors.