Geoengineering Info Profile picture
May 13 β€’ 9 tweets β€’ 7 min read Twitter logo Read on Twitter
🚨NEW PAPER🚨

"The potential climate impact of #SolarGeoengineering is examined in a recent study using climate model simulations by artificially reducing the incoming solar radiation at the top of the atmosphere."
#ClimateEngineering
#SolarShading

Results discussed in a🧡
1/9 ImageImage
"Climate scenario simulations reveal that a doubling of atmospheric CO2 induces a surface temperature rise which is amplified over the poles primarily during the respective winter. The warming also causes intensification & poleward shift of the global precipitation pattern."
2/9 ImageImage
"In the model, a 2.1% globally uniform #SolarReduction can largely compensate the global mean warming caused by a doubling of CO2."
3/9 ImageImage
This study finds that "#SolarShading is efficient to restore the temp at the region where the background sunshine is strong, regionally at low-latitudes, seasonally during summer. A 3.6% solar reduction in the tropics can largely reduce the tropical #GlobalWarming as well."
4/9 Image
"However, it reduces the precipitation at the central tropics, while increase the precipitation over the monsoon region."
5/9 Image
"Comparatively, a 14% #SolarReduction over the #poles can effectively prevent the polar summer temp increase & sea-ice retreat. However, caused by the increased temp gradient, polar #SolarShading increases the storm activity at high latitudes, especially during summer."
6/9 ImageImageImage
The simulations of this study show that "#SolarShading could be an effective way to stabilize the #polar cryosphere. Nevertheless, it has a strong impact on the hydrological cycle & provides a heterogenous regional climate signal."
7/9
Read the open-access study (Preprint) entitled: The effect of global and regional solar shading onclimate: A simulation study" here ⬇️
researchsquare.com/article/rs-285…

#SolarGeoengineering
#SolarShading
#ClimateEngineering

8/9 Image

β€’ β€’ β€’

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

Keep Current with Geoengineering Info

Geoengineering Info 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 @geoengineering1

May 14
πŸ“πŸ’‘ π–πžπžπ€π₯𝐲 𝐇𝐒𝐠𝐑π₯π’π π‘π­π¬πŸ’‘πŸ“
Here's your roundup of top #CarbonDioxideRemoval News Articles / Scientific Papers from the past week: 🌱πŸͺ¨πŸŽ›οΈπŸŒŠ

🧡
1/12 Image
1️⃣ In this week’s @CipherClimate Voices article, "@naimmerchant, @NoahMcQueen13, & Grant Faber discuss:
πŸ”Έthe critical role #DAC will play in achieving #NetZero
πŸ”Έhow DAC solutions are improving in terms of cost & efficiency as the tech scales."

➑️

2/12
2️⃣ 🌊New paper dropped by @bach_lennart, @_david_ho_ & others on "how to deal with air-sea gas exchange uncertainties when assessing the efficacy of ocean-based #CarbonDioxdeRemoval."

πŸ“πŸ“–βž‘οΈ

3/12
Read 12 tweets
May 14
✍️ π–πžπžπ€π₯𝐲 𝐇𝐒𝐠𝐑π₯𝐒𝐠𝐑𝐭𝐬 ✍️

Top #SolarGeoengineering News /Scientific papers from the past week covered in a 🧡below: ⬇️

1/7 Image
1️⃣ ✍️ "DMF @DegreesNGO scientists respond to NYT opinion piece on #SolarRadiationManagement."

πŸ“œFind NYT opinion piece here ⬇️
nytimes.com/2023/04/18/opi…

πŸ“œFind DMF scientists response here ⬇️


2/7
2οΈβƒ£πŸ“ A recent preprint published in @researchsquare journal reveal that, "#SolarShading could be an effective way to stabilize the #polar cryosphere. However, it has a strong impact on the hydrological cycle."

πŸŽ™οΈπŸ”Šβž‘οΈ

πŸ“πŸ“–βž‘οΈ

3/7
Read 7 tweets
May 14
πŸš¨βœοΈππ„π– πƒπŽπ‚π“πŽπ‘π€π‹ π“π‡π„π’πˆπ’βœοΈπŸš¨

"The discussion of energy consumption for cryogenic & combined #DirectAirCapture systems is explored in the newly published thesis."πŸŽ›οΈ

Details are discussed in aπŸ§΅β¬‡οΈ
1/10 ImageImage
In this novel approach, "a thermodynamic model was constructed using psychometric theories to model the #desublimation of CO2 in a #DAC system. The system was modeled
to include a precooling heat exchanger & a deposition chamber where the desublimation
of CO2 occurs."
2/10 Image
3️⃣ base systems studied:
πŸ”Έ NC (no precompression/turbine recovery)
πŸ”ΈPC (precompression only)
πŸ”ΈTR (precompression & turbine recovery)
at 3️⃣ different compression ratios, n=400, 800 & 2000.
Then, a combination #DAC system, PSA, was modeled."
3/10 Image
Read 10 tweets
May 14
πŸš¨πŸ“ππ„π– ππ€ππ„π‘πŸ“πŸš¨

A recent study used "an Earth system model to examine the response of #OceanAcidification to idealized atmospheric #CarbonDioxideRemoval scenarios."

Details in a 🧡below ⬇️
1/8 Image
"In the simulations, atmospheric CO2 is assumed to increase at a rate of 1% per year to four times its pre-industrial value and then decreases to the pre-industrial level at a rate of 0.5%, 1%, 2% per year, respectively."
2/8
Results show that "the annual mean state of surface ocean #carbonate chemistry fields including [H+] conc., pH & aragonite saturation state respond quickly to removal of atmospheric CO2. Yet, the change of seasonal cycle in CaCO3 chemistry lags behind the decline in atm CO2."
3/8
Read 8 tweets
May 13
🚨NEW PAPER🚨

"Utilization of biochar as a cementitious material aids in CO2 sequestration by impeding the release of C in the atm. So, a recent study reviewed the prospect of #biochar as a #cementitious material by evaluating its physical, mechanical & durability properties."🧡 ImageImage
This research suggested that "the physical properties of #biochar promote its use as an environmental control device."
A summary of the preparation and characterization of biochar is presented in a Fig. ⬇️
2/7 Image
According to the study, #pozzolan is a siliceous & aluminous material
that chemically reacts with Ca(OH)2 at room temp to form compounds having #cementitious attributes. So, some of the silica-rich biochars, like the ones derived from #RiceHusk have pozzolanic properties."
3/7 ImageImage
Read 7 tweets
May 13
🚨NEW PAPER🚨

A recent study "uses a lightweight integrated assessment #model SCORE to explore possible scenarios using #CarbonDioxideRemoval for limiting #GlobalWarming to 1.5 Β°C by 2100."

🧡
1/9 Image
"Particularly, this exploration quantify the impacts of relying on #CDR when accounting for:
1️⃣ possible under- and overestimation of the cost, potential, and availability (feasibility) of future CDR and
2️⃣ the compound effect with uncertainty in climate sensitivity."
2/9
"All scenario results show that aggressive near-term mitigation is required for limiting warming to 1.5 Β°C by 2100 for all levels of climate sensitivity, but that some amount of #CDR is likely required in the future even if climate sensitivity turns out to be extremely low."
3/9
Read 9 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!

:(