Seasonal, Interannual and Long-term Sea-level Changes in the Arabian Gulf
The current chapter investigates the short-term, long-term, and seasonal sea-level fluctuations in the Arabian Gulf. In the Arabian Gulf, currents generated by density, winds, and tides are the main circulators. With a peak in November and a trough in April, the sea level is typically high in the autumn and low in the spring. The pattern of sea-level variations in the nearby marginal basin is very different from, or virtually opposite, the sea-level variability in the Arabian Gulf (Red Sea). The examination of low-passed sea level using Principal Component Analysis has revealed that the first mode of fluctuation accounts for 87.9% of the long-term variability. The Northern Arabian Gulf’s long-term linear sea level trends are 2.58 mm/year and 3.14 mm/year, respectively, with a total average of 2.92 mm/year. With a basin average trend of 4.29 mm/year, the long-term linear trends in sea level for the post-2000 period are 4.06 mm/year and 4.44 mm/year, respectively. By 2050, the sea level in the Arabian Gulf is expected to rise by 8.1 cm, 1.3 cm, and 6.8 cm, and by 16.9 cm, 17.7 cm, and 39.1 cm, according to the numerical estimates for the RCP2.6, RCP4.5, and RCP8.5 scenarios.
Cheriyeri Poyil Abdulla,
Department of Marine Physics, King Abdulaziz University, Jeddah 80200, Saudi Arabia and Department of Physical Oceanography, Cochin University of Science and Technology, Kochi-682016, India.
Please see the link here: https://stm.bookpi.org/CAGEES-V5/article/view/7527
Keywords: Arabian Gulf, long-term linear trend, Sea level, ENSO, IOD, NAO, Satellite altimetry.