polarrobs.bsky.social
Polar marine scientist. UK Science Lead in Science Coordination Office of International Thwaites Glacier Collaboration. Views are my own.
On Mastodon @[email protected]
410 posts
1,575 followers
669 following
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How much energy does the pump use, and what would be the total energy requirement if it was scaled up to the level suggested?
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Yes, and the journalist seems to have failed to ask a lot of obvious questions, such as:
What are the actual acids and alkalis used?
How are they sourced, and what are the carbon emissions involved in their production and transport?
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At least this time it is admitted near the head of the article that “There's broad consensus amongst climate scientists that the overwhelming priority is to cut greenhouse gas emissions, the chief cause of global warming.”
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Thanks
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I hear reports that cuts to NOAA could lead to its closure. Atmospheric CO ₂ concentrations are measured regularly at many other stations around the world now, but no other has such a long record, of course.
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Yes, I think that's the main factor. Most land in temperate climate zones, where foliage growth is seasonal, lies in the Northern Hemisphere. So the uptake of CO₂ through photosynthesis temporarily decreases the concentration through Northern Hemisphere summers.
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Over recent years the growth rate in concentration has averaged about 2.5 ppm per year. If it continues to rise at this rate, the concentration will exceed 450 ppm before 2035, and kids at school may then be taught to express it as 0.05% as a round number.
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At school in the late 70s I remember being taught that atmospheric CO₂ concentration was 0.03%, which was still correct then if rounded to two decimal places of a percentage point.
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This compares with an increase over a period of around 10,000 years as the world emerged from the last ice age of 55%. The ongoing rate of change is breathtaking.
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He'd already topped it by a huge margin within one day of his tariffs announcement.
bsky.app/profile/pola...
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13. And anyone who has been part of this grand humanist tradition is someone who will not lie down and cower before these sad bullies.
I don't know what happens to science in the US over the next four years, but I have no doubt as to where the arc of history bends.
We aren't going anywhere.
fin
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The situation is similar across much of eastern and southern England.
bsky.app/profile/pola...
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The Bellingshausen Sea is the nearly ice-free area centre left in the first graphic in the post above, from @nsidc.bsky.social, and lower left in the second graphic, from University of Bremen Institute of Environmental Physics.
nsidc.org/data/seaice_...
seaice.uni-bremen.de/sea-ice-conc...
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You could say that. Thinned to nothing. But now it's very late in starting to re-grow.
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Here are a few more from the couple of days I was there that year.
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So, it seems little has changed in that area in 40 years!
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I remember that there were a lot of old American cars around at the time. I think this was something to do with high tariffs on new ones, so mechanics became skilled at keeping the old ones going.
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By this time I had a strong desire to head home, but I couldn't pass up the opportunity to explore some of the sights of South America, so my adventure continued.
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At its current rate, global mean sea level rises one quarter of an inch every 18 months. Furthermore, the rate has doubled over the past 30 years, as shown by satellite altimetry data.
www.aviso.altimetry.fr/en/data/prod...
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It's really shocking that we have got to the situation where such advice is necessary.
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The EFF has some handy guides about data protection when crossing the border: www.eff.org/document/eff...
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I'll definitely think carefully about what I declare in terms of social media accounts next time I fill in an ESTA application form, and if I do go sometime over the next few years I'll probably take a burner phone.
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If only that was the biggest problem with the fact this is even being discussed.
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The purpose pf the dyke was probably to gain control of trade with communities further west. Today it is a haven for wildlife. Photos here shows some pasque flowers, rare chalk grassland plants, which grow locally on the SW-facing slopes of the dyke.