The Oman upwelling zone during 1993, 1994 and 1995

Shi, Wei; Morrison, John M.; Böhm, E.; Manghnani, V

doi:10.1016/s0967-0645(99)00142-3

Cited by 71 publications

(44 citation statements)

References 17 publications

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“…The timing of warming and upwelling events found in our work coincide with temporal patterns previously reported for the studied areas (Saetre 1985, Wilkinson et al 1999, Shi et al 2000, Andrade & Barton 2005, Amador et al 2006, Wang & Fiedler 2006, Wilkinson & Souter 2008, which confirms the appropriateness of the metrics used to quantify these events.…”

Section: Methodssupporting

confidence: 90%

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Upwelling areas do not guarantee refuge for coral reefs in a warming ocean

Chollett

Mumby²,

Cortés³

2010

Mar. Ecol. Prog. Ser.

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Global warming is a severe threat to coral reefs. It has been proposed that upwelling could minimise the thermal stress caused by ocean warming, and therefore upwelling areas may serve as a refuge for corals. Here, using 21 yr of satellite sea surface temperature data, we analysed the degree to which the thermal stress experienced by corals is reduced in 4 seasonal upwelling areas with reef development: Colombia in the southern Caribbean, Panama in the eastern tropical Pacific, Oman in the Arabian Sea and Madagascar in the Indian Ocean. Upwelling areas do not always offer protection from thermal stress. When compared with nearby non-upwelling areas, upwelling can only provide defence against warming events if: (1) the threat and the upwelling coincide, and (2) this overlap produces a meaningful decrease in thermal stress in upwelling areas. These conditions were met in only 2 of the 4 upwelling areas analysed: Colombia and Oman. In Oman, upwelling decreased the magnitude, frequency and duration of thermal disturbances (identified when Coral Bleaching HotSpots, anomalies exceeding the average temperature of the warmest month, are larger than 1°C), while in Colombia upwelling only decreased their frequency. The protective role of upwelling seems to be limited geographically; therefore, further upwelling areas need to be assessed individually in order to evaluate their capacity as a refuge from thermal stress.

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Section: Methodssupporting

confidence: 90%

“…In Oman, the southwest monsoon produces winddriven upwelling off the east coast during summer (Shi et al 2000). Anomalously high SSTs in this region have been attributed to unusual warming during the summer months, occasionally linked to ENSO events (Wilkinson et al 1999).…”

Section: Methodsmentioning

confidence: 99%

Upwelling areas do not guarantee refuge for coral reefs in a warming ocean

Chollett

Mumby²,

Cortés³

2010

Mar. Ecol. Prog. Ser.

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“…During the SW Monsoon there was evidence of strong upwelling with cool, lower salinity, nutrient-rich water in the inshore region adjacent to Oman (Lee et al, 2000;Shi et al, 2000). The inshore coastal upwelling region was similar in both hydrography and nutrients to the four other major coastal upwelling regions (Barber and Smith, 1981).…”

Section: D\ 1 ) During the Sw Monsoon And Moderately Oligotrophic Conmentioning

confidence: 96%

Primary productivity and its regulation in the Arabian Sea during 1995

Barber

Marra

Bidigare

et al. 2001

Deep Sea Research Part II: Topical Studies in Oceanography

225

106

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“…The coast of Oman is among the most intense upwelling regions of the world, with SSTs 58C or more below the ambient offshore temperature and branches of cold water extending into the Arabian Sea (Elliot and Savidge, 1990;Manghnani et al, 1998). Strong channelling of the flow parallel to the coast and upwelling gives rise to the East Arabian Current (Shi et al, 2000). The upwelling cools the marine boundary layer, thus increasing the thermal gradient across the coast, resulting in stronger winds, which further reinforces the upwelling.…”

Section: The Arabian-peninsula Coastal Jetmentioning

confidence: 99%

Global distribution and seasonal variability of coastal low-level jets derived from ERA-Interim reanalysis

Ranjha

Svensson

Tjernström

et al. 2013

Tellus A: Dynamic Meteorology and Oceanography

157

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A B S T R A C TA low-level wind maximum is often found over the oceans near many coasts around the world. These Coastal Low-Level Jets (CLLJs) play an important role in the coastal weather and have significant impacts on regional climate and ecology as well as on a number of human activities. The presence of CLLJs is related to various local circumstances such as land-sea temperature contrasts, upwelling, coastal terrain, orientation of the coast, and so on, but also to the large-scale atmospheric dynamics. This makes studies of CLLJs not only interesting but also challenging. In this study, based on ERA-Interim reanalysis data, the global distribution, spatiotemporal structure and the seasonal variability of CLLJs are documented. Seasonal data from 1980 to 2011 are used to identify areas where CLLJs are frequently found in the lowest 2 km, following criteria based on the vertical profiles of wind speed and temperature. The results are analysed to highlight the fundamental aspects and distinctive features of the CLLJs across the globe, including their occurrence rate, jet height, maximum wind speed and horizontal extent. Global maps of CLLJs are constructed for the summer and winter seasons. The west coasts of North America, the Iberian Peninsula, north-western Africa and the south-eastern coast of the Arabian Peninsula make up the Northern Hemispheric CLLJ regions, while the west coasts of South America, Australia, and southern Africa comprise the South Hemispheric equivalents. The existence and characteristics of CLLJs along the southern coast of Oman and the western coast of the Iberian Peninsula regions are also discussed, not fully envisaged before in the context of CLLJs. The highest occurrence of CLLJs is found during the summer in both hemispheres, and the coast of Oman has the globally highest CLLJ frequency, with also the highest maximum wind speeds. The most commonly found CLLJ has a maximum wind speed between 9 and 15 m s(1 , and occurs at heights between 500 and 700 m a.s.l.

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The Oman upwelling zone during 1993, 1994 and 1995

Cited by 71 publications

References 17 publications

Upwelling areas do not guarantee refuge for coral reefs in a warming ocean

Upwelling areas do not guarantee refuge for coral reefs in a warming ocean

Primary productivity and its regulation in the Arabian Sea during 1995

Global distribution and seasonal variability of coastal low-level jets derived from ERA-Interim reanalysis

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