Parker A Case, Ph.D.

Congress is proposing taxing solar and wind power while Americans regularly experience dangerous air quality conditions from wildfires.

(NOAA-20 VIIRS imagery from June 1st, 2025)

Despite everything we’re still moving forward at the NASA Atmospheric Chemistry and Dynamics Laboratory!

Visiting a glacier in Iceland was an emotional reminder of what’s at stake. Everything is downstream of climate.

Lewotobi Laki Laki continues to erupt today. This image shows the ash fallout on Nov 5 from Landsat data—this thing has been erupting for 2+ weeks!

Parker Alexander Case ‪Postdoctoral Researcher, NASA Goddard Space Flight Center‬ - ‪‪Cited by 9‬‬ - ‪Aerosol Microphysics‬ - ‪Atmospheric Chemistry‬

Hi Mae! I’m an atmospheric scientist and i’d love to be on the science feed! scholar.google.com/citations?us...

I have spent the last decade thinking about stratospheric sulfate aerosols and let me tell you... we don't know enough to understand SAI geoengineering impacts, let alone start dumping sulfur up there

Great visualization! Your plots on twitter inspired me to make nicer plots for my work.

Emergency Declared as Smog Chokes Parts of India and Pakistan The authorities in New Delhi closed schools and urged residents to stay home. Similar measures have been implemented in Punjab, Pakistan’s largest province.

So bad it's making the news.

A composite satellite image of the Indian subcontinent showing smoke aerosols covering much of the continent and the surrounding ocean.

The Indian subcontinent usually stands out when scanning the satellite images and ground-based AERONET observations this time of year. The relatively new IIT Delhi AERONET site reported an extremely high AOD of 2.47 yesterday.

Anomalous trends in global ocean carbon concentrations following the 2022 eruptions of Hunga Tonga-Hunga Ha’apai - Communications Earth & Environment A major anomaly in 2022 satellite-based ocean phytoplankton trends is not a biological response but rather a processing error due to stratospheric aerosols from the Hunga-Tonga eruptions, suggest obse...

On January 15th, 2022, the underwater Hunga volcano exploded in one of the largest eruptions we have observed with satellites. The atmospheric impact of this eruption were so large that it caused problems in our satellite measurements of ocean carbon! Really amazing result from Franz et al.

🧪

Satellite image of the Lewotobi eruption on November 13th, 2024. It shows the ash from the volcano drifting Westward in the wind.

Satellite image of the eruption of Lewotobi from November 9th. It shows a brown and white plume above the volcano.

Lewotobi Laki-Laki continues to erupt in Indonesia. So far, observations indicate that very little ash or volcanic gas reached the stratosphere. This means that the volcano's impact on climate will be limited and regional.

🧪⚒️ Now that video is here, I can share this wild situation at the 2023 Litli-Hrútur eruption!
Lava on the ground strongly heats air above it. The hot air rises, particularly quickly compared to ambient chilly air. In this case, wind conditions allowed the updraft to start rotating. Hence, volcanado!

I'm Parker, an atmospheric scientist and NASA researcher. I'm interested in modeling atmospheric aerosols on a global scale! Volcanic eruptions, wildfires, dust events, particulate pollution! 🌋☁️🔥🌍

😳 "spacecraft ablation products are present in 10±7% of stratospheric sulfuric acid particles" - Murphy et al., 2023

Metals from spacecraft reentry in stratospheric aerosol particles | PNAS Large increases in the number of low earth orbit satellites are projected in the coming decades [L. Schulz, K.-H. Glassmeier, Adv. Space Res. 67, 1...

Aerosols in the stratosphere—which partially control the ozone layer—are being significantly impacted by ablation of satellites reentering the atmosphere. This effect will only increase as we put more and more stuff in low earth orbit.

I’m an assistant research scientist at NASA, using modeling alongside observational data to understand the dynamics and impacts of aerosols in the stratosphere. I specialize in aerosols resulting from volcanic eruptions! 🌋