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Apr 19, 2023 8 tweets 6 min read Read on X
🚨PAPER🚨

A recent study funded by @DegreesNGO, executed by @peteirvine & others aims "to assess the impact of #SAG on Sea Surface Temperature (SST) in the Gulf of Guinea & its causes using GLENS simulations performed under high anthropogenic emission scenario (RCP8.5)."
🧵
1/8 Image
"Study focus on two dynamically different regions:
🔸Sassandra Upwelling in Côte d’Ivoire (SUC, located east of Cape Palmas)
🔸Takoradi Upwelling in Ghana (TUG, located east of Cape Three Points)"
2/8 Image
Results show that "in the SUC region, under climate change, there is an increase in SST (referred to as the current climate) all year long (by 1.52 °C on average) mainly due to an < in net heat flux (lead by the > in longwave radiation) & also in weak vertical mixing."
3/8 ImageImage
"Under SAG, SST decreases all the seasonal cycle with its maximum in Dec (−0.4 °C) due to a reduction in the net heat flux (caused by a diminution of #SolarRadiation) & an increase in vertical advection (due to an increase in vertical temp. gradient & vertical velocity)."
4/8 ImageImage
"In the TUG region, under climate change, SST warming is a little more intense than in the SUC region and SST changes are driven by an increase in the net heat flux and strong stratification."
5/8 ImageImageImageImage
"The cooling of the SST in TUG is similar to the SUC region, but contrary to this region, the cooling
under SAG is not only explained by a decrease in the net heat flux but also by the remote forcing of
wind changes at the western equatorial Atlantic."
6/8 Image
Read open access paper on "Impact of Stratospheric Geoengineering on Sea Surface
Temperature in the Northern Gulf of Guinea" ⬇️
mdpi.com/2225-1154/11/4…

#StratosphericAerosolGeoengineering
#SAG
7/8

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