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Dec 6, 2022

The #EPIC instrument on

@NOAA

's #DSCOVR spacecraft (1 million miles from Earth) has pioneered high-cadence UV observations of #volcanic SO₂ emissions from space. EPIC captured emissions from the #MaunaLoa #eruption on Nov 28-29, which injected SO₂ to a range of altitudes.

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Sophie Ormiston

@sophieormists

Jan 5

This year, we’re starting Science In Action off with a bang - looking back at the Tonga eruption of one year ago 🌋 we discuss all the scientific discoveries, the human impacts, and what we still have left to learn 🌊

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Matthew Pritchard

@MattEPritchard

Dec 20, 2022

Pub alert! Final report from the

@usgsJWP

Volcano Remote Sensing Working Group (PowellVolc). Summarizes state of the art volcano remote sensing, barriers to use, and vision for improvements. Appendix with volcano-by-volcano observation plan. pubs.er.usgs.gov/publication/si

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Great to see the new #geostationary UV #GK2B #GEMS hourly SO₂ data presented at #AGU22. This animation shows SO₂ degassing at #Taal #volcano (#Philippines) detected by GEMS in October 2022. Potential game-changer for volcanic gas monitoring in E. Asia.

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You heard it here first 🌋🐠

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Scott Guzewich

@SGuzewich

Dec 13, 2022

Schoeberl: “bits of fish” may have gotten to 50 km altitude in the Hunga Tonga Hunga-Ha’apai volcanic eruption. #AGU22

Looking forward to our #AGU22 sessions on the January 2022 #eruption of the submarine Hunga Tonga - Hunga Ha'apai #volcano. A new paradigm for #volcano-atmosphere interactions. #AGU2022

Exciting to see the release of SO₂ data from #SouthKorea's #GEMS - the first geostationary UV sensor, to be followed in 2023-24 by

@TEMPO_Mission

@esa

's #Sentinel4. On Dec 6-7, GEMS caught some #MaunaLoa SO₂ drifting over China & Japan on its journey around the world.

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2022-12-20 Camera is now pointing almost due South to remove tilt, and will be left at wide angle when not being used to pan/zoom for condition monitoring.Th...

Dec 6, 2022

More #DSCOVR/#EPIC SO₂ data for #MaunaLoa on Nov 30 - Dec 1. High-cadence imaging of the #volcanic plume can detect changes in SO₂ emissions and dispersion that could impact #AirQuality in #Hawaii.

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The U.S.

is out of #WorldCup2022, and as a parting gesture we've sent some American #volcanic gas. This #Sentinel5 #TROPOMI image shows SO₂ emitted at the start of the #MaunaLoa #eruption, and transported in the sub-tropical jet stream, approaching #Qatar on December 5.

Credit:

Following the great tradition of #Icelandic #eruptions, there is now a #livestream of the #MaunaLoa #eruption from a webcam on Mauna Kea. #MaunaLoaErupts #MaunaLoaVolcano #MaunaLoaEruption #Hawaii

youtube.com

UH2.2m Coude Cam (Live)

Great

imagery from December 1 showing #MaunaLoa #lava flows crossing the road to the

@NOAA_ESRL

Mauna Loa Observatory (home of the

@Keeling_curve

), and the active Fissure 3 with its gas plume and shadow. At this time the active flow front was ~5 km from the Saddle Road.

#Lava flows from the #MaunaLoa #eruption saturated the #SuomiNPP #VIIRS Day-Night Band on Nov 28, producing a ‘post-saturation recovery streak’ to the SE. Such streaks are only seen over intense sources of visible light (e.g., lightning).

@CIMSS_Satellite

earthobservatory.nasa.gov/images/150676/

#Sentinel5P #TROPOMI data on November 29 showing the huge SO₂ plume from the ongoing #MaunaLoa #eruption drifting NE over Hilo and the eastern #BigIsland. Hopefully, the plume altitude is high enough to limit impacts on #AirQuality.

#Sentinel5P #TROPOMI data for the #MaunaLoa #eruption showing ~0.2 Tg SO₂ on Nov 28. SO₂ furthest east is at higher altitude than the plume nearer the #volcano. For reference, we estimate that the 1984 Mauna Loa eruption emitted ~1.2 Tg SO₂.

Satellite data from

's AIRS instrument (12:45 UTC Nov 28) shows #volcanic SO₂ emitted by the initial phase of the #MaunaLoa #eruption drifting NE of #Hawaii in the mid- to upper-troposphere. Note data gap east of the red line.

First #eruption of #MaunaLoa since 1984 started around 09:30 UTC on Nov 28. Follow

for updates. Webcam view of eruption onset in summit caldera: usgs.gov/volcanoes/maun

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USGS Volcanoes

Nov 28, 2022

HVO Mauna Loa RED/WARNING - Eruption has commenced at Mauna Loa summit. Local hazards include lava flows, ash and ... bit.ly/3OLnNSf

First significant

#LakeEffect #snow event of the season in #Michigan’s

@UpperPeninsula

. About 4” of accumulation in Hancock as of noon on Nov 12 and still snowing ❄️.

@NWSMarquette

@Visit_Keweenaw

@kreport

0:42

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Frontiers in Earth Science

@FrontEarthSci

Nov 9, 2022

Submit your research to the new collection on Volcanic Halogen Emissions and Their Fate in the Environment and Atmosphere - Led by Dr. Cadoux, Dr. Carn and Dr. Bonifacie🌋 More info through the link below⬇️ fro.ntiers.in/47796

Oct 31, 2022

Working on #volcanic halogen emissions and/or their fate in the environment & #atmosphere? Anita Cadoux (

@Harvard

), Magali Bonifacie (

@IPGP_officiel

) and I (

@michigantech

) are soliciting papers for a new

@FrontiersIn

#volcanology research topic. frontiersin.org/research-topic

Oct 22, 2022

A #wildfire broke out on the southern flank of #Kilimanjaro, #Tanzania on Oct 21, near one of the popular climbing routes. These

images from Oct 22 show the extent of the blaze.

October #snow and fading #fallcolor in #Michigan's

@UpperPeninsula

; sediment swirls in

@LakeSuperior

Aqua #MODIS satellite image on October 20.

With ongoing #volcanic unrest at #MaunaLoa, here are

's Total Ozone Mapping Spectrometer (TOMS) #satellite data showing SO₂ emissions from its last #eruption in March-April 1984. Some of the SO₂ reached #Guam, >6000 km from #Hawaii.

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Near-coincident views of the #Etna #volcanic plume from the ground and space on October 12. Satellite image shows the #Sentinel5P #TROPOMI SO₂ retrieval.

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Celebrating the 5th anniversary of #Sentinel5P #TROPOMI in sight of one of its targets - the #volcanic plume from #Etna.

#FallColors near peak in the higher elevations of #Michigan's #Keweenaw peninsula.

Sep 15, 2022

More submarine #volcanic activity in #Tonga, but much more benign than the #Hunga #eruption. Subaerial island growth and discolored seawater at Home Reef #volcano captured by

imagery on September 10-13. The island had grown to ~130 meters in diameter by Sept 13.

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Out of the blue: Volcanic SO2 emissions during the 2021–2022 eruptions of Hunga Tonga—Hunga Ha’apai...

Sep 13, 2022

Hunga #Tonga: the sulfur story #volcano #eruption

Most volcanism on Earth is submarine, but volcanic gas emissions by submarine eruptions are rarely observed and hence largely unquantified. On 15 January 2022 a submarine eruption of Hunga Tonga-Hu...

sciencedirect.com/book/978012819

Sep 6, 2022

🚨New book: Aerosols and Climate (Ed.

@KenCarslaw

). Includes a chapter on #volcanic emissions, #aerosols and #climate impacts I co-authored with

@volcanofile

. Great resource for #atmospheric science students, #postdocs, and faculty!

@ElsevierConnect

Sep 5, 2022

Sunday night’s #aurora was less active in Copper Harbor, but we did catch a brief glimpse of the phenomenon called STEVE (Strong Thermal Emission Velocity Enhancement), which appears further south than the typical auroral oval.

A couple more photos of last night’s #aurora from Upper #Michigan’s #Keweenaw peninsula. These were all taken around 10:50 pm EDT on Saturday.

#Aurora over

seen from Copper Harbor, #Michigan tonight.

@UpperPeninsula

@PureMichigan

#StormHour

184

1,270

🚨🌋 New

Mendenhall #postdoc #fellowship to synthesize observations of #volcanic gas emissions from ground, air and space. Based at

Cascades VO or

@alaska_avo

. US citizenship preferred. Closing date: Nov 1.

@IAVCEI_ECRNet

@AGUvgp

usgs.gov/centers/menden

On August 6,

#Sentinel5P #TROPOMI data show SO₂ from #Fagradalsfjall drifting east from the #eruption, then up the west coast of #Iceland over #Reykjavik and the #Snæfellsnes peninsula.

Here's a higher-resolution view of the #Meradalir #eruption and #lava flows on August 4 from a

SkySat.

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Planet

Aug 5, 2022

Following a series of earthquakes, Iceland's #Fagradalsfjall volcano erupts into fountains and rivers of lava that can be seen from space. This volcanic fissure is located 20 miles from the county’s capital of Reykjavik.

SkySat • Reykjanes Peninsula, Iceland • August 4, 2022

Clear skies over the #Reykjanes peninsula also allowed

to capture a great image of the #Fagradalsfjall #eruption in #Meradalir on August 4, compared here with a pre-eruption scene from June 29.

@rsimmon

@RagnarHeidar

@geoviews

0:04

3.7K views

Quick look at #Sentinel5P #TROPOMI SO₂ data for the #Fagradalsfjall #eruption (#Iceland) on Aug 4, showing the #volcanic plume drifting south over the N. Atlantic. As in 2021, air pollution may be one of the main hazards of this eruption.

Alexa Van Eaton

@volcaniclastic

Jul 11, 2022

Calling all citizen scientists. Did you or someone you know observe volcanic ash falling on the U.S. East Coast after the eruption of #MountStHelens on May 18, 1980? Do you have photos? Samples? Reply in comments - we need your stories and observations for science!

Global Volcanism Program and USGS Volcanoes

Black and white photo of Mount St. Helens volcano in Washington State during the May 18, 1980 eruption, showing a vertical eruption column and ash rising from ground-hugging pyroclastic density currents. U.S. Geological Survey photo in the public domain: https://www.usgs.gov/media/images/mount-st-helens-eruption

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