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SEA LEVELS - PACIFIC ISLANDS

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Sea Levels - Pacific Islands SEA LEVELS - PACIFIC ISLANDS There is concern that sea level rise might threaten the existence of some small island communities. Since the early 1990s the Australian Bureau of Meteorology has been running the Pacific Sea Level Project. The continually monitor sea level, air temperature and water temperature among other parameters. Given the motto of this site “Where numbers count” this is something of which we fully approve. Figure 1 shows the location of the monitoring sites. Figure 2 shows a schematic layout of a typical station. In a recent update of our web site  “www.climatedata.info/impacts/sea-levels/pacific-islands/  ... we plot the values of sea level for a twelve stations in the network. The data of these stations were summarised by the following figure 3. Two factors are very evident. Firstly sea levels are rising: a trend line through the average of all stations gives a rate of rise of 5 mm/year. T

MODELLING THE INFLUENCE OF CLIMATE CHANGE ON TONLE SAP WETLAND

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Tonle Sap wetland and the influence of climate change Model of Tonle Sap Tonle Sap is the largest lake in South-East Asia and is a wetland of international importance and is recognised by the Ramsar convention. Like most wetlands its area varies significantly through the year, from 2000 km 2 at its lowest to ten times that figure at its largest.   The bed of lake is close to sea level and its maximum level is normally only 10 m above sea level. The channel from the lake to the Mekong can flow in either direction. When levels in the lake are higher than those in the Mekong water flows out of the lake toward the Mekong (generally from October to April) and for the rest of the year it flows in the opposite direction.  The following map shows three significant locations for level and/or flow measurement. Levels in the lake are recorded at Kampong Loung.   Figure 1 - Important measuring sites related to the model of Tonle Sap    Levels and flows in the Mekong