Twitter author Profile picture
Apr 19 8 tweets 6 min read Twitter logo Read on Twitter
🚨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

• • •

Missing some Tweet in this thread? You can try to force a refresh
 

Keep Current with Twitter author

Twitter author Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!

PDF

Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

More from @

Apr 21
🚨NEW PAPER🚨

"A comprehensive #bioenergy accounting model with a multi-dimensional analysis was
developed in a new study based in #China by combining spatial, life-cycle, and multi-path analyses."

Summary in a 🧵 below ⬇️
1/6 Image
Accordingly, "the #bioenergy production potential and #GHG emission reduction for each distinct type of #biomass feedstock through different conversion pathways were estimated in the study."
2/6 Image
"The sum of all available organic waste (21.55EJ/yr) & energy plants on marginal land (11.77EJ/yr) in China produced 23.30EJ of #bioenergy & reduced 2535.32Mt CO2-eq emissions, accounting for 19.48% & 25.61% of China’s T energy production & C emissions in 2020, respectively."
3/6 Image
Read 6 tweets
Apr 21
🚨NEW PAPER🚨
"A promising solution to nullify the net embodied #GHG emissions of civil infrastructure is the use of C-negative materials for concrete manufacturing. C-neutral coal ash & agriculture/forestry by-products, like #biochar, exhibit a high CO2 uptake potential."
🧵
1/8 Image
📝 A lately published paper aimed "to explore the viability of using #biochar as a #CarbonSink and to develop carbon-neutral #concrete with improved performance."
2/8
📉 Experimental findings suggest that "the optimal amount of biochar (1%) slightly improves hydration and mechanical properties, but the combination with mineral additives significantly enhances the performance."
3/8
Read 8 tweets
Apr 20
🚨PAPER🚨

The newly published article focuses on the physical & chemical aspects of #CO2 #storage via liquid & solid chemical carriers & sorbents & gives an overview of the energetics around their use & options for their future development.
#CarbonRemoval
#CarbonStorage
🧵
1/7 ImageImage
Research pointed that "exciting opportunities for coupling #capture and medium to high maturity multi-year #storage technologies could support #CarbonRemoval in the coming decades."
2/7 Image
Highlights of the analysis are:
🔸"The remarkable #storage capacity of oxalic acid & formic acid (CO2-density of 1857 kg m−3 & 1152 kg m−3, compared with condensed liquid CO2 at 993–1096 kg m−3, respectively)."
3/7 ImageImage
Read 7 tweets
Apr 18
🚨NEW PAPER 🚨

"The energy-intensive nature of CO2 absorption-desorption processes has restricted deployment of #DAC operations. So, catalytic solvent regeneration is a valid solution to tackle this case by accelerating CO2 desorption at lower regeneration temperatures."
🧵
1/8 Image
The new work reports "a one-step synthesis methodology to prepare monodispersed #carbon nanospheres (MCSs) using trisodium citrate as a structure-directing agent with acidic sites."
#DirectAirCapture
2/8 Image
"The assembly of citrate groups on the surface of MCSs enables consistent spherical growth morphology, reduces agglomeration & enhances H2O dispersibility. The functionalization-assisted synthesis produces uniform hydrophilic nanospheres of 100–600nm range."
#DirectAirCapture
3/8 Image
Read 7 tweets
Apr 18
🚨 PAPER 🚨

A viable & novel formula for a #CarbonNegative, environmentally friendly #concrete that is nearly as strong as regular concrete has been developed recently at Washington State University.

#Concrete
#Biochar
#CarbonSequestration

*Summary* in a🧵 below:
1/6 Image
🧫 Researchers exemplify "a synergistic C-capture strategy, i.e., using #concrete washout water & #biochar together to achieve carbon-negative concrete."

"This strategy enabled the biochar to #capture 22.85 wt% air-borne CO2, which precipitated CaCO3 onto the biochar."
2/6 Image
🔬"This carbon-negative cement paste consisted of 30 wt% CO2-weathered #biochar and 70 wt% portland limestone #cement, which achieved the 7-day and 28-day compressive strengths of 22.1 MPa and 27.6 MPa, respectively," microscopic investigation revealed.
3/6 Image
Read 7 tweets
Apr 18
Michael Finus's project "The Governance Architecture of Climate Agreements in the Light of #SolarRadiation" analyzed "how #GeoEngineering in the form of #SRM, associated with the potential of high collateral damages, affects the governance architecture of climate agreements."
1/ ImageImage
This project "clarify under which conditions signatories to a climate agreement can avoid that non-signatories deploy risky #geoengineering."
2/ Image
This study also "correct & qualify the results of Millard-Ball (2012): not only must collateral damages be above but also below a threshold so as the threat to deploy #geoengineering can stabilize a climate agreement on reducing #GHG."

Read Preprint ⬇️
papers.ssrn.com/sol3/papers.cf…
3/ Image
Read 4 tweets

Did Thread Reader help you today?

Support us! We are indie developers!


This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Don't want to be a Premium member but still want to support us?

Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal

Or Donate anonymously using crypto!

Ethereum

0xfe58350B80634f60Fa6Dc149a72b4DFbc17D341E copy

Bitcoin

3ATGMxNzCUFzxpMCHL5sWSt4DVtS8UqXpi copy

Thank you for your support!

Follow Us on Twitter!

:(