The Effect of Volcanic Eruptions on Climate

One of the biggest tectonic events that has an effect on the earth climate is volcanic activity.

Assess the extent to which primary rather than secondary impacts are the more serious effects arising from volcanic eruptions. (30 marks)

analyse the factors that cause differences in the hazards posed by volcanoes around the world (40 marks)

Analyse the factors that causes differences in the hazards posed by volcanoes around the world (40 marks)

The Earth has been experiencing a considerable amount of climate change for the last several decades. Natural factors that contribute to the climate system consist of: solar output, volcanic activity and earth’s orbit around the sun. The two factors relevant on timescales of contemporary climate exist in volcanic activity and changes in solar radiation. The earth’s energy balance primarily influences the amount of incoming energy from volcanic eruptions, which have a relatively short-term effect on climate. Changes in solar output have contributed greatly to climate trends over the past century. The effect of greenhouse gases in the atmosphere has been at least ten times that of changes in the Sun’s output and the ocean covers more than 70 percent of the earth’s surface, receiving twice the amount of earth’s radiation. Although the sun is the engine that drives all the weather, oceans and atmosphere control the sun 's energy along certain

Volcanic eruptions not only give burning lava to the environment but the eruptions also release sulfur into the air (Mattox). This may sound familiar as coal burning power plants

Volcanoes are in fact important because without volcanoes the atmosphere wouldn’t have its oxygen rich properties. Many of years ago, Earth’s atmosphere was swarm with rock-forming minerals of the earth 's crust. During earlier volcanic eruptions many gasses enters into the earth atmosphere. Carbon dioxide, water vapor and many other gases

Climate change is evident throughout the world and is a major issue. It is no secret that our planet is getting warmer. Global warming is now recognized in the scientific community as a real problem. There are multiple aspects that are causing this issue. Majority of the warming is caused by greenhouse gases. Volcanic eruptions and changes in the intensity of solar radiation have offset the warming partially. It is estimated that average annual temperatures will increase 3.5°F-9.5°F by the century’s end.

their most recent, was issued in 2014. The IPCC reports in its fifth assessment that they are 95

The active volcano that I chose to research is Popocatepetl volcano. Popocatepetl volcano is an active volcano located in Mexico. The volcano is oftentimes referred to as “El Popo” by many Mexicans. El Popo is a composite cone volcano. Being a composite cone volcano, El Popo is characterized by a steep cone shape, which was created by many composite layers of material pouring out over numerous eruptions. The lava that comes out of El Popo is extremely viscous. The highly viscous lava does not travel very far, and typically cools down rapidly. Scientists believe that El Popo is about 730,000 years old. It has erupted more than 15 times since 1519. In 1994 El Popo produced gas and ash, which caused nearby towns to evacuate. The toxic

Volcanic eruptions happen all across the surface of the globe, many argue that if controlled and monitored they would have little effect on the population. However others argue that some volcanic events are too powerful or unpredictable to control.

There are many variables within the climate change equation that must be taken into account to determine what is truly causing the climate change. Yet, recently, it has been observed that in years following a volcanic eruption the global temperature has been a couple of degrees cooler, and there has been increased precipitation. "The amount and global extent of cooling depend on the force of the eruption, the amount of particular gases emitted, and, perhaps, on the location of the volcano with respect to the world's global atmospheric circulation patterns." (NASA Homepage) The argument that volcanic eruptions cause the climate change is as follows: volcanic eruptions eject sulfur dioxide into the atmosphere, and the resulting stratospheric aerosols change the short and long wave radiation budget of the atmosphere. This causes a chain reaction in which the stratosphere cools off. (Welcome to MTU Geology Department) The diagrams below illustrate the many variables involved in a volcanic eruption.

The main effect on weather right near a volcano is that there is often a lot of rain, lightning, and thunder during an active volcano that is eject lava, ash, and gases. This is because all the ash particles that are thrown up into the atmosphere are good at attracting/collecting water droplets. The particles moving through the air and separating positively and negatively charged particles.

• Carbon dioxide (CO2) is a greenhouse gas that warms the atmosphere. • Since pre-industrial times, atmospheric CO2 concentrations have increased from about 280 parts per million (ppm) to over 380 ppm. Current concentrations of CO2 and other greenhouse gases are unprecedented in at least the last 650,000 years, based on records from gas bubbles trapped in polar ice. • Independent measurements demonstrate that the increased CO2 in the atmosphere comes

Over the years there has been a lot of controversy on if climate change is an issue that needs to be discussed and solved. There is a constant debate among scientist on if human actions are contributing the changing of earth’s climates. Climate change is defined as the change in average weather patterns for a specific region or Earth as a whole. This could include the change in an average temperature for a city or the amount a rainfall it receives (Dunbar, 2015). The main difference between weather and climate is the period of time specific patterns are recorded. Weather patterns are looked at over a much shorter period of time, meaning that these patterns are going to be more sporadic and change more frequently. Climate on the other had is recorded over a much longer period of time and usually show less drastic changes in patterns when compared to weather. Some people may argue that climate change is not an issue because Earth’s temperature is always changing do to natural effects. What people don’t realize is that human activity has effected the rate that earth’s temperature is changing, and just the smallest changes can lead to drastic consequences (Dunbar, 2015).