Harvard Scientists start experimenting to block the sun




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Total solar eclipse. Credit: GTIGetty

A group of Harvard scientists Plans to hit climate changes by geoinishing by blocking the sun. The concept of artificially reflecting sunlight is around the decade, but this will be the first real attempt to control Earth's temperature by solar engineering.

The project, called Stratospheric controlled perturbation experiment (SCoPEx), will spend $ 3 million to test their models by launching a steamable balloon in the South South US. It. 20 kilometers into the stratosphere. Once the balloon is in place, it will release small particles of calcium carbonate. Plans are in place to start the launch as early as the spring of 2019.

The base around the experiment is from learning the effects of great volcanic eruptions on the planet's temperature. In 1991, Mount Pinatubo in the Philippines Earned spectacularly, releasing 20 million tons of sulfur dioxide into the stratosphere. The sulfur dioxide created a blanket around Earth stratospher, cooling the entire planet by & nbsp; 0.5 & deg; C for about a year and a half.

Engineering A Solution to Climate Change

As scientists, government agencies around the world, and environmental groups grow increasingly worried about our collective capability to reduce greenhouse gas emissions and curb climate change, the idea of ​​geoinishing a solution has become more acceptable. The ultimate goal is to reduce the warmth on earth. This can be done by reducing greenhouse gas emissions, sucking CO 2 of the atmosphere, or limiting the sunshine that reaches the ground's surface.

The first two methods were actively discussed and implemented in various degrees. The recent commitment from G20 members (With the United States as the sole rectifier) To the Paris Agreement Will play a solution to the problem by reducing greenhouse gas emissions. Sucking co2 from the atmosphere and locking it off into ground's crust, called co2 sequestration, is implemented and engaged. For example, Royal Dutch Shell& Nbsp; has built large carbon sequestration facilities with the Canadian and Australian governments.

The third method, blocking out Sonlight was controversial in the scientific community for decades. The controversy lies in the inability to fully understand the consequences of partial blocking of sunshine. A global temperature reduction is well understood and expected, however, there are questions around & nbsp; The method's impact on precipitation pattern, ozone, and crop grubly globally.

The display of the balloon system The Harvard team will deploy to release calcium carbonate in the stratosphere.projects.iq.harvard.edu

This is precisely why the Harvard Research Team intends to spray small chalk (calcium carbonate) particles into a controlled experiment in the stratosphere. Computer models can only go so far in predicting the impact of the geoenginiering technique, it's time for a real world test. With funding in part of Microsoft's co-founder Bill Gates, the Harvard team will begin to answer the remaining questions as early as the Spring of 2019.

While the potential negative effects are not fully characterized, the ability to control ground temperature by spraying small particles in the stratosphere is an attractive solution largely due to its cost. The recent Intergovernmental Panel on Climate Change (IPCC) report estimates that the continuous release of particles in the stratosphere may be offset & nbsp;1.5 & g; C of warming for $ 1 billion to $ 10 billion per year.

When comparing the costs with the global reduction in fossil fuel use or carbon sequestration, the method becomes very attractive. Thus, scientists, government agencies and independent funders of this technology must balance the cheapness and effectiveness of this method with & nbsp; The potential risks to global crops, weather conditions, and drought. Ultimately, the only way to fully characterize the risks is to conduct real-world experiments, as the Harvard team is embarking on.

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Total solar eclipse. Credit: GTIGetty

A group of Harvard scientists plan to tackle the crimes change by geoinishing by blocking the sun. The concept of artificially reflecting sunlight is around the decade, but this will be the first real attempt to control Earth's temperature by solar engineering.

The project, called Stratospheric Controlled Perturbation Experiment (SCoPEx), will spend $ 3 million to test their models by launching a steamable balloon in the Southwest. 20 kilometers into the stratosphere. Once the balloon is in place, it will release small particles of calcium carbonate. Plans are in place to start the launch as early as the spring of 2019.

The base around the experiment is from learning the effects of great volcanic eruptions on the planet's temperature. In 1991, the Pinotubo Mountains in the Philippines erupted spectacularly, releasing 20 million tons of sulfur dioxide in the stratosphere. The sulfur dioxide created a blanket around Earth Stratosphere, cooling the entire planet by 0.5 ° C for around a year and a half.

Engineering A Solution to Climate Change

As scientists, government agencies around the world, and environmental groups grow increasingly worried about our collective capability to reduce greenhouse gas emissions and curb climate change, the idea of ​​geoinishing a solution has become more acceptable. The ultimate goal is to reduce the warmth on earth. This can be done by reducing greenhouse gas emissions, sucking CO 2 of the atmosphere, or limiting the sunshine that reaches the ground's surface.

The first two methods were actively discussed and implemented in various degrees. The recent commitments of the G20 members (with the United States as the sole rejection) to the Paris Agreement will play to address the source of this problem by reducing greenhouse gas emissions. Sucking co2 from the atmosphere and locking it off into ground's crust, called co2 sequestration, is implemented and engaged. For example, Royal Dutch Shell has built large carbon sequestration facilities with the Canadian and Australian government.

The third method, blocking out Sonlight was controversial in the scientific community for decades. The controversy lies in the inability to fully understand the consequences of partial blocking of sunshine. A global temperature reduction is well understood and expected, however, there are questions about the method of impact on sediment patterns, ozone, and crop.

The display of the balloon system The Harvard team will deploy to release calcium carbonate in the stratosphere.projects.iq.harvard.edu

This is precisely why the Harvard Research Team intends to spray small chalk (calcium carbonate) particles into a controlled experiment in the stratosphere. Computer models can only go so far in predicting the impact of the geoenginiering technique, it's time for a real world test. With funding in part of Microsoft's co-founder Bill Gates, the Harvard team will begin to answer the remaining questions as early as the Spring of 2019.

While the potential negative effects are not fully characterized, the ability to control ground temperature by spraying small particles in the stratosphere is an attractive solution largely due to its cost. The recent Intergovernmental Panel on Climate Change (IPCC) report estimates that the continuous release of particles in the stratosphere can increase 1.5 ° C for warming $ 1 billion to $ 10 billion per year.

When comparing the costs with the global reduction in fossil fuel use or carbon sequestration, the method becomes very attractive. Thus, scientists, government agencies and independent funders of this technology must balance the cheapness and effectiveness of this method with the potential risks to global crops, weather conditions, and drought. Ultimately, the only way to fully characterize the risks is to conduct real-world experiments, as the Harvard team is embarking on.


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