Western Arabian Sea
The western part of the Arabian Sea is one of the most productive regions of the World Ocean. The maps below exemplify the two modes of biological productivity mediated by changes of the monsoons. Analyses and visualizations used in this study were produced with the Giovanni online data system, developed and maintained by the NASA GES DISC. The South West Monsoon period is the most productive one.
Figure 1. Spatial distribution of chlorophyll a in June-September 2008. The SeaWIFS scanner.
Figure 2. Spatial distribution of chlorophyll a in October-December 2008.
The months of October to December might characterize the intermonsoon period (the less productive one).
The current slide show characterizes the process of the interannual changes of the productivity in the western Arabian Sea during its most productive (summer) period over the past 10 years (1998-2008). One could notice that the productivity did not change much. Values and spatial coverage -both have varied over the years, with no pronounced interannual trends however.