At 4pm Philippine Standard Time (8 a.m. UTC) the Philippine Institute of Volcanology and Seismology (PHIVOLCS) issued an advisory stating a weak explosion signal was detected at the Pinatubo volcano between 12:09pm and 12:13pm Philippine Standard Time. The explosion caused a plume that was detected by satellite. PHIVOLCS states that the seismic and infrasound signals from the volcano are not typical of volcanic processes and are being evaluated together with other potential sources (aircraft activity, ordinance disposal, other activity). In addition, very low seismic activity has been recorded in the past few days. PHIVOLCS advised the public to stay away from the area around the Pinatubo volcano until the source of the explosion has been determined.
Authored by: Brad (@IsraelGazaICN) and the Project Owl News Desk Team.
In the early hours of June 12th, 1991, a small explosion rocked the local populace around Mount Pinatubo in the Pampanga province of the Philippines. Over the next few days a series of volcanic eruptions occurred climaxing with a final eruption in the afternoon of June 15. Thanks to early warning detections weeks earlier by the Philippine Institute of Volcanology and Seismology, and the United States Geological Survey, over 20,000 people were evacuated, but over 800 people died, and 10,000 were left homeless. It was the second-largest volcanic eruption during the 20th century.
The catastrophic events of that week are remembered by climate scientists for another reason. The colossal eruption proved to be a critical source of knowledge of volcanic forcing from aerosol and dust emissions. Global temperatures fell around 0.5°C for a few years following the eruption, another demonstration of the cooling effect of aerosols. Humanity also emits aerosols, (alongside GHGs), which contributes around –0.5°C (that is to say, negative 0.5°C) of the observed global mean surface temperature anomaly since the 1850-1900 preindustrial baseline.1 As such, understanding the historical forcing of aerosols, and the future emissions trajectories of aerosol emissions is critical to predicting short and long-term global warming.
https://en.wikipedia.org/wiki/1991_eruption_of_Mount_Pinatubo
Historical articles on the Mount Pinatubo eruption,
Mount Pinatubo: The Aftermath of a Volcanic Eruption
The Cataclysmic 1991 Eruption of Mount Pinatubo, Philippines
Remembering Mount Pinatubo 25 Years Ago: Mitigating a Crisis
Hansen et al.'s memorable analysis of the climatic effects of the Mt. Pinatubo eruption,
Popular scientific articles about the eruption,
Global Effects of Mount Pinatubo (nasa.gov)
Volcanoes and Climate Change (nasa.gov)
... keep reading on reddit ➡
In the past, volcanic winters like the ones caused by the eruption of Mount Tambora in 1815, the likely volcanic winter of 535 CE, and the eruption of Thera in 1620 BCE all had major impacts on human society and human history. And while the volcanic winter following the 1991 eruption of Mount Pinatubo was nowhere near as severe as these major volcanic winters, half a degree of cooling is not insignificant. Are there any events that could have been triggered by this climate shift? Or is it too early to tell?
I miss using my P-Sharan Pinhole Camera. Sharing one of my favorite shots.
https://preview.redd.it/4lbt7voulrm41.jpg?width=3637&format=pjpg&auto=webp&s=b559ba4c0ced8e6ceaaaa4cc3a2783e4e2ce86eb
In the early hours of June 12th, 1991, a small explosion rocked the local populace around Mount Pinatubo in the Pampanga province of the Philippines. Over the next few days a series of volcanic eruptions occurred climaxing with a final eruption in the afternoon of June 15. Thanks to early warning detections weeks earlier by the Philippine Institute of Volcanology and Seismology, and the United States Geological Survey, over 20,000 people were evacuated, but over 800 people died, and 10,000 were left homeless. It was the second-largest volcanic eruption during the 20th century.
The catastrophic events of that week are remembered by climate scientists for another reason. The colossal eruption proved to be a critical source of knowledge of volcanic forcing from aerosol and dust emissions. Global temperatures fell around 0.5°C for a few years following the eruption, another demonstration of the cooling effect of aerosols. Humanity also emits aerosols, (alongside GHGs), which contributes around –0.5°C (that is to say, negative 0.5°C) of the observed global mean surface temperature anomaly since the 1850-1900 preindustrial baseline.^(1) As such, understanding the historical forcing of aerosols, and the future emissions trajectories of aerosol emissions is critical to predicting short and long-term global warming.
https://en.wikipedia.org/wiki/1991_eruption_of_Mount_Pinatubo
Historical articles on the Mount Pinatubo eruption,
Mount Pinatubo: The Aftermath of a Volcanic Eruption
The Cataclysmic 1991 Eruption of Mount Pinatubo, Philippines
Remembering Mount Pinatubo 25 Years Ago: Mitigating a Crisis
Hansen et al.'s memorable analysis of the climatic effects of the Mt. Pinatubo eruption,
Popular scientific articles about the eruption,
Global Effects of Mount Pinatubo (nasa.gov)
[Volcanoes and Climate Change (nasa.gov)](https://earthobservatory.nasa.gov/features/Volcan
... keep reading on reddit ➡