Mesoscale eddies, coastal upwelling, and the upper-ocean heat budget in the Arabian Sea

Near‐inertial kinetic energy budget of the mixed layer and shear evolution in the transition layer in the Arabian Sea during the monsoons

“…Weak winds and strong surface heating (not shown) [Fischer et al, 2002] during this period create a shallow mixed layer. As the winds strengthen during the summertime southwest monsoon (in June, July, and August) mixed layer deepens.…”

“…The parameter r is added in the PWP model to mimic the downward propagation of radiation and to prevent inertial oscillations cut off from the forcing and mixed layer from ringing forever. Due to the presence of strong horizontal gradients of temperature [Fischer et al, 2002] at the mooring site after 24 June, there are large differences between the PWP model and the observations and those model results are not reported here.…”

Mesoscale eddies and submesoscale structures of Persian Gulf Water off the Omani coast in spring 2011

“…These currents then destabilize to form meanders and mesoscale eddies with a radius comparable with or slightly larger than the first baroclinic radius of deformation (about 40 km in the region; see Chelton et al, 1998). These eddies are known to dominate the near-surface circulation offshore (see Fischer et al, 2002) and to induce horizontal transports. They have a vertical influence on the water masses at depth (see Furey, 2012, andCarton et al, 2012).…”

Challenges in modeling spatiotemporally varying phytoplankton blooms in the Northwestern Arabian Sea and Gulf of Oman

“…The Arabian Sea is influenced by a reversing monsoonal cycle (Wang and Zhao, 2008), an evaporative fresh-water flux over most of the basin, and an annual mean heat gain (Banse and McClain, 1986;Fischer et al, 2002). In summer (June-September), the southwest Monsoon (SWM) blows strongly across the northwestern Arabian Sea .…”

“…The confluence of the Persian Gulf outflow current and the East Arabian Sea Current parallel to Omani and Yemeni coastlines in Arabian Sea leads to formation of a frontal zone and formation of persistent eddies in the region. Because the size of eddies is comparable to the width of the Gulf of Oman, they can affect mixing and transport of biota on a basin scale (Fischer et al, 2002;Piontkovski et al, 2012). Piontkovski et al (2012) suggested that the increased amplitude of the seasonal cycle of chlorophyll a might be associated with the increased variability of mesoscale eddy kinetic energy (EKE) per unit mass in the Gulf of Oman or in the western Arabian Sea.…”