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Simon Carn

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H-index: 57
Environmental science 44%
Geology 23%
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by Simon Carn

simoncarn.bsky.social
Satellite measurements on July 18 show continued SO₂ emissions from the erupting fissure in #Iceland and dispersion of SO₂ over #Greenland and the #Arctic Ocean.
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by Simon Carn

simoncarn.bsky.social
Dispersion of #volcanic SO₂ from the latest #eruption on #Iceland's #Reykjanes peninsula (July 16), measured by the Sentinel-5P TROPOMI satellite instrument. SO₂ emissions have spread into north and west Iceland, impacting air quality (Icelandic Met Office). @esa.int
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by Simon Carn

simoncarn.bsky.social
Thanks Fred. Impressive plume but low SO₂ loading (~6 kt or 0.006 Tg); an order of magnitude lower than the June 17 eruption of #Lewotobi.
Map of column amounts of sulfur dioxide (SO2) gas in the Lewotobi volcanic plume, measured by the Sentinel-5P/TROPOMI satellite instrument. The map shows SO2 spreading west of the volcano in the upper troposphere.
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Reposted by: Simon Carn

caseydreier.bsky.social
Today, we're launching a dedicated action hub for the crisis threatening NASA science. Find actions, latest news and up-to-date resources at: www.planetary.org/save-nasa-sc... #ProtectNASAScience
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by Simon Carn

simoncarn.bsky.social
Satellite imagery of nighttime lights using the NOAA-20/VIIRS Day/Night Band ('visible image at night') shows areas of Spain and Portugal still affected by power outages overnight on April 28-29. Images from NASA Worldview. @thenasaearth.bsky.social @noaa.gov
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by Simon Carn

simoncarn.bsky.social
The world's youngest mountain glacier - Crater Glacier at Mount St. Helens #volcano (WA, USA) - formed in 1996 in the amphitheater produced by the May 1980 eruption. The glacier flows around lava domes erupted in 1980-86 and 2004-08. Photos taken in 2023. #WorldGlacierDay 🧪🌋
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Reposted by: Simon Carn

sangasso.bsky.social
🧪🛰️

My colleague @simoncarn.bsky.social and I were consulted for this note by @avoiland.bsky.social to comment on volcanoes and clouds in the South Atlantic.

A nice place to study aerosol-cloud interactions! (and other things of course)

earthobservatory.nasa.gov/images/15404...
Swirling Skies and Melting Icebergs
The remote South Sandwich Islands can disrupt passing clouds in ways that shed alternating rows of cloud spirals.
earthobservatory.nasa.gov
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by Simon Carn

simoncarn.bsky.social
When Spurr last erupted in 1992, volcanic ash & gas clouds (a potential aviation hazard) drifted south over the Pacific NW & Upper Midwest. A fully functional USGS & NOAA is needed to monitor such events & mitigate their impacts. NASA/NOAA satellite data also critical for tracking volcanic clouds.
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Reposted by: Simon Carn, Thomas Wahl, Flavio Lehner

volcanojw.bsky.social
Some folks have asked, given recent news, “how do I show my friends/family the impact of NSF?” We have some easy Fact Sheets for you! Here’s a brief thread about this website: new.nsf.gov/about/fact-s... which hosts a ton of useful one-pagers.
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Reposted by: Simon Carn

tuffcookie.bsky.social
A reminder: If you need to know about volcanic activity in the United States and are concerned that you might not be able to reach USGS websites at some point, PLEASE make sure you sign up for our volcano notification Service: volcanoes.usgs.gov/vns3/ It is a straight-to-email messaging system. 🌋🧪⚒️
Volcano Notification Service (VNS)
volcanoes.usgs.gov
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by Simon Carn

simoncarn.bsky.social
Satellite imagery from @planet.com shows increased steaming in the summit caldera of Fentale volcano (Ethiopia) in the last week. Emissions appear confined to topographic lows - perhaps a meteorological effect (temperature inversion?). @davidmpyle.bsky.social @volckaren.bsky.social 🧪
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by Simon Carn

simoncarn.bsky.social
#Volcanic SO₂ plume from #Kanlaon #volcano captured and entrained by Super Typhoon #Man-yi (#Pepito) during its passage through the #Philippines. Data from the #geostationary GK-2B GEMS instrument.
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Reposted by: Simon Carn

julieelliott.bsky.social
#30DayMapChallenge Day 14: World Map

Large explosive volcanic eruptions during the Holocene plotted by VEI (Volcano Explosivity Index). Volcano data from SI Global Volcanism Program.
Map of the world with circles of various sizes in shades of red, orange, and yellow. The circle size and color corresponds to size of explosive volcanic eruption that took place. There are far more smaller circles than very large circles, indicating that very large eruptions are (thankfully) less common.
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Reposted by: Simon Carn

scottstgeorge.paleohydrology.com
No insurer will write a policy for global cooling triggered by a massive 🌋eruption. But we shouldn't ignore a risk just because it's uninsurable.

In this comment led by Markus Stoffel, we argue the risk industry ought to think more seriously about 'Tambora 2.0'.

www.nature.com/articles/d41...
The next massive volcano eruption will cause climate chaos — and we are unprepared
Volcanic activity will be experienced differently in a warmer world. Researchers need to understand these risks and how they could spiral.
www.nature.com
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by Simon Carn

by Simon Carn

simoncarn.bsky.social
Evolution of colors in tonight’s #aurora over Hancock, #Michigan. @Upper Peninsula @NWSMarquette @TamithaSkov #northernlights #geomagneticstorm
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by Simon Carn

simoncarn.bsky.social
Overhead #aurora in Hancock, #Michigan tonight. #Auroraborealis #northernlights
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by Simon Carn

by Simon Carn

simoncarn.bsky.social
Satellite data from @CopernicusEU #Sentinel5P #TROPOMI show a band of #volcanic SO₂ advancing over the NW #UK and #Ireland on Aug 24, behind a cold front. Observations of SO₂ over Europe are set to improve (-> hourly) with the upcoming launch of the #geostationary #Sentinel4.

by Simon Carn

simoncarn.bsky.social
Another batch of #volcanic SO₂ en route to the #UK/#Ireland, courtesy of the latest #eruption on #Iceland's #Reykjanes peninsula. Might cause some local #AirQuality impacts in the coming days. @eddy_weather @ScottishEPA

SO₂ data: @NOAA/@NASA @JPSSProgram #NOAA20-#OMPS
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by Simon Carn

simoncarn.bsky.social
Longer sequence of hourly #GEMS data (daytime only) showing SO₂ emissions from the June 3 #Kanlaon #eruption. On June 5, the upper tropospheric SO₂ cloud was moving west over #SriLanka and S. #India, whilst SO₂ at lower altitudes is dispersing over the southern #Philippines.

by Simon Carn

by Simon Carn

simoncarn.bsky.social
The first #lava flows since 1974 on #Kīlauea's Southwest rift zone, imaged by @planet on June 3 at 20:09 UTC (10:09 HST), shortly before the #eruption paused. #Hawaii @USGSVolcanoes @USGS @Volcanoes_NPS
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by Simon Carn

simoncarn.bsky.social
The largest #eruption on record of #Kanlaon/#Canlaon #volcano (#Philippines) on June 3 produced an upper tropospheric SO₂ cloud (~0.05 Tg SO₂), seen here from #geostationary orbit by #SouthKorea's UV #GK2B #GEMS sensor.

@phivolcs_dost @News5PH @nababaha
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by Simon Carn

simoncarn.bsky.social
network.
https://map.purpleair.com/1/mAQI/a10/p604800/cC0#5.21/54.073/6.084

@DefraGovUK
US EPA PM2.5 Air Quality Standards Interactive Map by Pur...
Watch: With two minute updates, The US EPA PM2.5 Air Qual...
map.purpleair.com

by Simon Carn

simoncarn.bsky.social
The #volcanic SO₂ (and derived sulfate aerosol) from #Iceland seems to be impacting surface #AirQuality over the northern #UK today.

L: #TROPOMI data shows SO₂ plume at 11:50 UT
R: map shows data from the @ThePurpleAir...
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by Simon Carn

simoncarn.bsky.social
Consecutive orbits of #TROPOMI data on May 30 show ongoing SO₂ emissions from the Sundhnúksgíga #eruption. The SO₂ plume emitted on May 29 is now drifting towards NW #Scotland & SO₂ columns in this cloud remain quite high (~200 DU). Might create some visible haze. @EIlyinskaya
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by Simon Carn

simoncarn.bsky.social
First #Sentinel5P #TROPOMI overpass ~1.3 hours after the onset of today's #eruption on #Iceland's #Reykjanes peninsula shows very high SO₂ column amounts in plume spreading SE. Est. SO₂ emission rate is ~1400 kg/s (~120,000 tons/day). @Vedurstofan @CopernicusEU @rockhardIES
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by Simon Carn

simoncarn.bsky.social
SO₂ emissions from the April 16 #eruption of #Ruang #volcano (#Indonesia) measured with hourly cadence by #SouthKorea's #geostationary UV GK-2B #GEMS sensor. Relatively low SO₂ amounts detected so far. @PVMBG_ @id_magma @andrewcraigtupp

by Simon Carn

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