Dynamics of Sea-level Changes in the Red Sea | Chapter 3 | Current Advances in Geography, Environment and Earth Sciences Vol. 5

Information on sea-level fluctuations is crucial for a full understanding of upper-ocean processes in light of recent global climate shifts. There is a severe shortage of data on sea-level fluctuations in the Red Sea, particularly data on interannual variability, long-term trends, and related dynamics. By examining satellite altimetry sea-level data over nearly three decades (1993-2020), the current study tried to close this gap and is utilised to comprehend the variability and associated dynamics in the Red Sea sea-level. The sea level normally rises in the winter, reaching its peak in December or January, and falls in the summer, reaching its lowest point in August, in a consistent pattern moving from south to north. The fluctuation of global climate modes, such as the East Atlantic-West Russian oscillation and El Nio Southern Oscillation occurrences, interannual changes in sea level and the Indian Ocean Dipole are strongly connected. Compared to other climatic trends, the El-Nino Southern Oscillation has a bigger effect on sea level. The rate of sea level rise in the Red Sea from 1993 to the present was 3.88 mm/year, which was comparable to the global rate of 3.3 0.5 mm/year. The Red Sea saw a much faster rate of sea level rise (6.40 mm/year) from 2000 to the present.

Author(s) Details:

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/7528

Seasonal, Interannual and Long-term Sea-level Changes in the Arabian Gulf | Chapter 2 | Current Advances in Geography, Environment and Earth Sciences Vol. 5

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.

Author(s) Details:

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