What would the climate effects of a Supervolcano be?

Question

I am doing a research project on Supervolcanoes and their climate effects. If I were to (hypethetically) say that The supervolcano under Yellowstone National Park were to erupt, I know that the surfuric acid cloud would kill everything within between 250-700miles, create a nuclear winter, result in lower temperatures by 10-15C, and destroy our ecosystems.

How long would it take before the ecosystems were able to recovery, and how long would (the remainder) of humans be forced to survive with limited vegetation? And how long would the nuclear winter last? (I have heard people state between 4-5years, up to 10-12 years?)

Thanks for any possible assistance.
:-)

Answer 1

the climate effects would be.....bad!

Answer 2

very tough question i watched a program on this on more than 1 occasion and i think yr stats above are quite accurate but put it this way i hope is dont happen in my lifetime lol
p.s am in north east scotland in aberdeen so we get our fair share of snow but not as much as i remember when i was a kid we got 2 feet of it last year wohoooooooo roll on the winter lol

Answer 3

Why do you call it "nuclear winter"?
There will be a winter but nothing with nuclear.

Answer 4

4.55 billion years ago
Volcanoes Generate Atmosphere, Oceans
Earth’s early atmosphere is generated as volcanic eruptions release massive amounts of gases. Some of these gases condense to fill the earliest oceans. Much later, as life begins to evolve in the oceans, marine organisms produce oxygen.

EFFECTS OF ERUPTIONS:
Air Pollution :
Some of these pollutants also come from natural sources. For example, forest fires emit particulates and VOCs into the atmosphere. Ultrafine dust particles, dislodged by soil erosion when water and weather loosen layers of soil, increase airborne particulate levels. Volcanoes spew out sulfur dioxide and large amounts of pulverized lava rock known as volcanic ash. A big volcanic eruption can darken the sky over a wide region and affect the Earth’s entire atmosphere. The 1991 eruption of Mount Pinatubo in the Philippines, for example, dumped enough volcanic ash into the upper atmosphere to lower global temperatures for the next two years. Unlike pollutants from human activity, however, naturally occurring pollutants tend to remain in the atmosphere for a short time and do not lead to permanent atmospheric change.
Once in the atmosphere, pollutants often undergo chemical reactions that produce additional harmful compounds. Air pollution is subject to weather patterns that can trap it in valleys or blow it across the globe to damage pristine environments far from the original sources.
Earthquakes:
Volcanic earthquakes occur near active volcanoes but have the same fault slip mechanism as tectonic earthquakes. Volcanic earthquakes are caused by the upward movement of magma under the volcano, which strains the rock locally and leads to an earthquake. As the fluid magma rises to the surface of the volcano, it moves and fractures rock masses and causes continuous tremors that can last up to several hours or days. Volcanic earthquakes occur in areas that are associated with volcanic eruptions, such as in the Cascade Mountain Range of the Pacific Northwest, Japan, Iceland, and at isolated hot spots such as Hawaii.
Natural Hazards:

Natural Hazards, dangers arising from geological or weather-related occurrences, such as earthquakes, volcanoes, floods, hurricanes, and tornadoes.

The most familiar and publicized hazards are those that take place without warning, often of catastrophic dimensions. In addition, there are continuous hazards whose effects are less apparent, such as natural radioactivity or naturally occurring toxic metals in the environment. Furthermore, some natural hazards can be exacerbated by human activity, such as flooding resulting from the destruction of forests. Central to the study of hazards, therefore, are the fundamental issues underpinning environmental science, namely, how to identify what is a natural hazard, what is created by humans, and what is a combination of the two.

A factor used in characterizing hazards is their predictability. An important concept of predictability is the return period, which represents the average period of time for an event of a given magnitude to recur. Public perception of the seriousness of a hazard is influenced by many factors, but in general a hazard is more acceptable if a relatively small amount of damage takes place frequently, compared with a large degree of damage occurring infrequently. It is also important to distinguish hazard from risk, with which it is often confused, the latter being the probability of the hazard occurring.

The most spectacular natural hazards are earthquakes and the eruption of volcanoes, both of which occur on the crustal plate boundaries and are consequently characteristic of certain areas, in particular the Pacific Rim. The intensity of an earthquake is measured on the Richter scale. Although there is no upper limit to the Richter scale, earthquakes of magnitude 8 or greater are rare. In California it has been estimated that an earthquake with a force greater than Richter scale 8 will occur once every 100 years. An earthquake of this magnitude destroyed much of San Francisco in 1906. One of the most severe earthquakes in recent years killed 240,000 people in Tangshan, China, in 1976. In January 1995, more than 6,400 people were killed in Kōbe, Japan, when an earthquake devastated much of the city.

Volcanic eruptions can have massive effects on a global as well as local scale. For example, the explosion of Krakatau, a small volcanic island in Southwestern Indonesia, in 1883 discharged ash up to 80 km (50 mi) high, which encircled the earth within two weeks, leading to a fall in solar radiation at ground level and spectacular sunsets for several years. Volcanoes vary greatly in their frequency of eruption, with 20 percent erupting less than once every 100 years and 2 percent less than once every 10,000 years. Damage to the environment arises not only from lava and mudflows, but also from deposition of ash and the release of toxic gases. Another major hazard produced by earthquakes and volcanic eruptions are tsunamis, enormous waves that reach maximum height near the shore where they can cause massive damage and loss of life.