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9 changes: 9 additions & 0 deletions src/data/papers-citing-parcels.ts
Original file line number Diff line number Diff line change
Expand Up @@ -2315,4 +2315,13 @@ export const papersCitingParcels: Paper[] = [
abstract:
'In this paper, we analyze two-dimensional distributions of water parcels as they travel poleward from 35°N in the California Current System (CCS). Daily, altimeter-derived velocities are used to carry the parcels, with and without the addition of Ekman transports. Poleward-traveling parcels use the Inshore Countercurrent (ICC) off southern and central California in summer and autumn, connecting to the Davidson Current (DC) off northern California, Oregon and Washington in autumn–winter. Water parcels from southern/central California are more successful in reaching north of 43°N (Cape Blanco) when they travel in the geostrophic flow beneath the Ekman layer. The years when the greatest number of parcels arrive north of 43°N are often (not always) El Niño years. During years with successful poleward transports, local wind forcing is stronger north of 38°, especially around the large capes, 39°-43°N. These winds increase poleward geostrophic currents north of 38°-40°N and increase transports past the large-cape region. Examination of individual years demonstrates that this region is a ‘leaky obstacle’ for the poleward parcel transports, resisting those transports when there are ‘broken’ (discontinuous) patterns of poleward geostrophic velocities in the large-cape region. Distant forcing of signals from the equator along the ‘Oceanic Pathway’ primarily increase the poleward transports during El Niños with dominant eastern Pacific signatures, especially 1997–98 and 2015–16. However, this oceanic distant forcing enhances poleward geostrophic currents south of 40°N and is less effective in moving parcels around the large capes. Local wind forcing farther north is more effective.',
},
{
title:
'Subsurface marine heat waves and coral bleaching in the southern red sea linked to remote forcing',
published_info: 'Weather and Climate Extremes, 48, 100771',
authors: 'Raju, NJ, S Sanikommu, AC Subramanian, D Giglio, I Hoteit (2025)',
doi: 'https://doi.org/10.1016/j.wace.2025.100771',
abstract:
'Research on marine heat waves (MHWs) in the Red Sea has focused on the surface signatures of these extreme warm events, such as the sea surface temperature (SST). This focus may potentially neglect the detrimental effects of subsurface MHWs. The unprecedented coral bleaching event observed in the southern Red Sea in 2015, despite less intense SSTs than in the MHW in 2002, highlights this oversight. A high-resolution regional reanalysis of the Red Sea reveals that 2015 and 2002 were characterized by subsurface heat content anomalies of opposite signs at depths up to 100 m, with positive anomalies in 2015 and negative anomalies in 2002. A heat budget analysis suggests that the primary heat source is advection from the southern boundary connecting with the Gulf of Aden (GoA). The advection of negative temperature anomalies from the GoA contributed to decreased subsurface heat in 2002, and the advection of positive temperature anomalies from the GoA contributed to increased subsurface heat in 2015. The total increase in the subsurface heat observed in 2015 is linked to the reduction in Red Sea surface water (RSSW) and GoA intermediate water (GAIW). The higher sea surface height (SSH) and deeper 25 isopycnal in GoA during 2015 resulted in horizontal pressure differences between the southern Red Sea and GoA, corresponding to the reduced flow of RSSW and GAIW that year. The primary factor contributing to the elevated SSH and deeper 25 isopycnal is the presence of an anticyclonic eddy (Somali current ring) along the western shores of the GoA. The probable cause for the stronger anticyclonic eddy in 2015 compared to 2002 is the decreased intensity of the westward-propagating upwelling Rossby waves that originated from as far away as the Arabian Sea and the western coasts of India.',
},
]