A study of temperature and salinity of field data (October 2004 & March 2005) and modis data of Johor waters (2004 & 2005)

Abstract

This study was done in order to determine and compare the temperature and salinity of Johor for the October 2004 and March 2005, and also to determine and compare the temperature of Johor through the observation of MODIS for the year 2004 and 2005. There were 30 stations being studied, and these stations were being divided into 5 transects. In a meantime, the images from MODIS for Johor for the year of 2004 and 2005 were also being collected. As a result, the temperature for each transects for October 2004 was found out to be increasing towards the ocean, and it was getting decrease down the transects. The salinity for all transects for October 2004 were increasing towards the ocean as well as to the deeper part of the transects. The halocline layer for the March data was found decreased through the transects. For the October data, the transect 4 was the only transect that did not show its termocline and halocline layer, but for March data, there were two transects that did not show its termocline and halocline layer. The MOD IS data of 2004 showed that the range temperature of the data is between 24.9°C until 34.2°C. In a meantime, result of the MODIS data of 2005 showed that the range temperature of the data is between 26.2°C until 35.2°C. October was the transitional period. The increasing of temperature during October 2004 was also referred to two factors, which were the high surface heating and weak wind during this period in xii which caused the water to has higher temperature especially on the surface. Mixing processes is dominating the water temperature during the northeast monsoon due to the winds. Those characteristics that help in controlling the ocean temperature are the high solar radiation throughout the year due to the earths's rotation around the sun, and also a high amount cloud cover throughout the year as a result of the sea gaining heat from the sea surface. The problems arose when there were some images that had almost the same characteristics. As a conclusion, the temperature of the Johor water was increasing from the year 2004 to the year 2005, as a signal of the global warming.