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#climatescience

18 posts9 participants7 posts today
Solarpunk Now!

Seattle Worldcon 2025 was an incredible experience! A huge shout-out to everyone who came to every panel with the word "solarpunk" in it like it was their job. ✊

My big takeaway is that we're all looking for hopeful visions of the future - the people want solarpunk! So honored to be able to present my research and network with amazing authors & organizers in such a beautiful city.

#solarpunk#worldcon#seattleworldcon
Ivi Choc

#FYI #PaulBeckwith video lecture and literature review #starlink #satellites #ozone #polarvortex

"it can take 30 years for [satellites] to fall downwards to the ozone regions, there is a large time lag to destroy the ozone. So when the ozone layer collapses in several decades, do not be surprised. At least you will know why."

youtube.com/watch?v=P29F7LAtqzc

YouTubeStratospheric Polar Vortex Disruption and Ozone Depletion from Huge Increase in Satellite Re-Entry’sBy Paul Beckwith
#climate#ClimateScience
Ivi Choc

#FYI #AmericanResiliency #EmilySchoerning #resilience #US #USA #TimesOfChange #Washington #NCA5

"new information that will help communities build resilience in eastern Washington, which remains very strong, and we identify important emerging challenges in western Washington, along with response actions"

youtube.com/watch?v=Wj-FkmSLIRQ

YouTubeWashington 2C Climate Outlook: NCA5 UpdateBy American Resiliency
#climate#ClimateScience#climatechange
O=C=O

Rapid loss of Antarctic ice may be climate tipping point, scientists say

Rapid loss of #Antarctic sea ice could be a tipping point for the global #climate, causing #SeaLevelRise's, changes to #ocean currents and loss of marine life that are

>impossible to reverse,

a scientific study published on Thursday said.
The paper in the journal #Nature aimed to describe in previously unseen detail the interlocking effects of #GlobalWarming on the Antarctic, the frozen continent at the planet's #SouthPole.

"Evidence is emerging for rapid, interacting and sometimes self-perpetuating changes in the Antarctic #environment," it said.
The study gathered data from observations, ice cores, and ship logbooks to chart long-term changes in the area of sea ice, putting into context a rapid decline in recent years.

reuters.com/sustainability/cop

#TippingPoints
#ClimateScience
#Uhhps

MPI für Meteorologie

📢We currently have 3️⃣ open #Postdoc positions!

🌎Are you passionate about #ClimateScience? Do you have a #PhD in #physics, #mathematics, #geosciences, #meteorology, #oceanography, or a related discipline? Do you want to work in an international, inspiring research environment?
✅👉Check out our current job opportunities at mpimet.mpg.de/en/career/job-op

🔁 Please share this post with people you think might be interested!

📧 We are looking forward to your applications!

#ScienceJobs#Job
*
Ivi Choc

#FYI #PaulBeckwith video lecture and literature review #polarvortex #collapse #extremeweather #china

Paul presenting Newton the High Albedo Dog ❤️ ^.^ for emotional support to help bear with the following explanations on the effects of the sudden polar vortex collapse in 2024 ...

youtube.com/watch?v=4cDIaYNUx3k

YouTubeArctic Stratospheric Polar Vortex Collapse Greatly Increased Monsoonal Rainfall in South ChinaBy Paul Beckwith
#climate#ClimateScience#climatechange
Continued thread
Ivi Choc

#microbes #icemelt #Greenland #glacier #algae

original open access article

Cook et al. 29 Jan 2020, Cryosphere 14(1):309–330

Glacier algae accelerate melt rates on the south-western Greenland Ice Sheet

"microbes there are responsible for 4.4 to 6.0 gigatons of runoff, representing up to 13% of total melt"

doi.org/10.5194/tc-14-309-2020

climate #ClimateScience #climatechange #ClimateEmergency #ClimateCrisis #ClimateBreakdown #ClimateDisruption #globalWarming #globalHeating #ExtremeWeather

doi.orgGlacier algae accelerate melt rates on the south-western Greenland Ice SheetAbstract. Melting of the Greenland Ice Sheet (GrIS) is the largest single contributor to eustatic sea level and is amplified by the growth of pigmented algae on the ice surface, which increases solar radiation absorption. This biological albedo-reducing effect and its impact upon sea level rise has not previously been quantified. Here, we combine field spectroscopy with a radiative-transfer model, supervised classification of unmanned aerial vehicle (UAV) and satellite remote-sensing data, and runoff modelling to calculate biologically driven ice surface ablation. We demonstrate that algal growth led to an additional 4.4–6.0 Gt of runoff from bare ice in the south-western sector of the GrIS in summer 2017, representing 10 %–13 % of the total. In localized patches with high biomass accumulation, algae accelerated melting by up to 26.15±3.77 % (standard error, SE). The year 2017 was a high-albedo year, so we also extended our analysis to the particularly low-albedo 2016 melt season. The runoff from the south-western bare-ice zone attributed to algae was much higher in 2016 at 8.8–12.2 Gt, although the proportion of the total runoff contributed by algae was similar at 9 %–13 %. Across a 10 000 km2 area around our field site, algae covered similar proportions of the exposed bare ice zone in both years (57.99 % in 2016 and 58.89 % in 2017), but more of the algal ice was classed as “high biomass” in 2016 (8.35 %) than 2017 (2.54 %). This interannual comparison demonstrates a positive feedback where more widespread, higher-biomass algal blooms are expected to form in high-melt years where the winter snowpack retreats further and earlier, providing a larger area for bloom development and also enhancing the provision of nutrients and liquid water liberated from melting ice. Our analysis confirms the importance of this biological albedo feedback and that its omission from predictive models leads to the systematic underestimation of Greenland's future sea level contribution, especially because both the bare-ice zones available for algal colonization and the length of the biological growth season are set to expand in the future.
Ivi Choc

#FYI via Prof. #EliotJacobson

Your 'moment of doom' for Aug. 15, 2025 ~ Feedback loop alert!

"these factors have the potential to trigger an amplifying positive feedback loop: ice-darkening microbes nudge up temperatures and accelerate melt, exposing more nutrient-rich debris that encourage the growth of yet more microbes..."

theguardian.com/world/2025/aug

climate #ClimateScience #climatechange #ClimateEmergency #ClimateCrisis #ClimateBreakdown #ClimateDisruption

The Guardian · Arctic glaciers face ‘terminal’ decline as microbes accelerate ice meltBy Ben Martynoga
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