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| Gaye, A.; Citeau, J.. |
| The atmospheric water vapor, a main climatic parameter, remains also one of the less well known in the inter tropical area. Different space programs have been carried out to improve its measure: the data provided by these experimental or operational programs, give an alternate and complementary information the model’s analysis. Moreover, the time series available today, are long enough to allow studies of variability of different climatic parameters. The following contribution, dedicated to the climate of the Western Africa, analyses the atmospheric humidity as retrieved by NOAA8/TOVS12 dated over the last 20 years. The climatology of the upper tropospheric humidity (UTH13), retrieved from HIRS-121, evidences the importance of the position and the... |
| Tipo: Report |
Palavras-chave: Climate; Noaa/Tovs; Intertropical zone of convergence; Subsidence; Satellites; SSM/I; Evaporation; Monsoons. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/571 |
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| Susanto, D.; Vinayachandran, P.; Hacker, P.; Masumoto, Y.; Webster, P.; Godfrey, S.; Meyers, G.. |
| Understanding and predicting the interannual variations of the whole monsoon climate system has been, and will continue to be, one of the major reasons for studying the oceanography of the Indian Ocean; but there are other reasons. Knowledge about Indian Ocean current systems may have diverse practical applications, from fisheries through search and rescue to management of Exclusive Economic Zones. Our discussion mainly concerns the open ocean and the climate applications, but the results are important for most continental shelves of the Indian Ocean region on all but the shortest timescales. We start by discussing what we know now of the Indian Ocean’s mean annual cycle, painfully gleaned from sparse observations over the last four decades. This data base... |
| Tipo: Working Paper |
Palavras-chave: Monsoons; Climate prediction. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/322 |
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| Osore, M.; Fiers, F.; Daro, M.H.. |
| The taxonomic composition, abundance and spatio-temporal distribution of copepods were analysed from monthly zooplankton samples collected in Makupa creek and Mombasa Harbour (Makupa creek was until recently subjected to considerable dumping of domestic and industrial waste). At least 51 copepod species belonging to 38 genera in the families Calanoida (25), Harpacticoida (5), Poecilostomatoida (7) and Cyclopoida (1) were identified. The most common genera were Acartia, Acrocalanus, Corycaeus, Oncaea and Oithona. Copepods bloomed in the wet months of November and April (75 to 158/m3). Abundance was consistently high near the creek mouth and low within the creek enclosure. Copepod diversity (H’) was slightly higher (2.00 to 2.57) during September, November,... |
| Tipo: Journal Contribution |
Palavras-chave: Mombasa; Marine pollution; Zooplankton; Copepod culture; Monsoons. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/1081 |
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| Kirtman, B.P.; Wu, R.. |
| This study explores the impacts of the Indian summer monsoon (ISM) on the El Niño-Southern Oscillation (ENSO) evolution by utilizing two coupled general circulation model simulations. The first simulation uses the Center for Ocean-Land-Atmosphere Studies (COLA) anomaly coupled model and the second simulation employs a new coupling strategy, interactive ensembles, that is designed to increase the signal to noise ratio. The effects of monsoon variability related and unrelated to ENSO are separated through composites in terms of both Niño-3.4 sea surface temperature (SST) and Indian summer monsoon rainfall (IMR) anomalies. It is found that ENSO-related monsoon variability has significant impacts on warm events. In the interactive ensemble simulation, a weak... |
| Tipo: Working Paper |
Palavras-chave: Monsoons; Sea surface temperature. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/503 |
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