Can the effects of cloud seeding be playing a role on our global temperatures?
As you can see from the chart below of global temperatures, you can see in the early 1900’s that human and natural causes were fairly inline with each other. It wasn’t until the 1940’s, when I started to see spikes in temperature changes. The 1960’s was like an explosion in human drivers compared to natural drivers. What started happening in these time frames? Jet airplanes first were created in the early 1940’s, but they did not start to boom until the 1960’s. Intriguing stat compared to the global temperature chart. Taking a look at another important global warming stat, is the fact that cloud seeding started in 1946 and became pretty popular very quickly. Today, cloud seeding is practiced all over the world. That is great for drought prone areas, until you see the chemicals used, they are all ozone depleting chemicals. Unfortunately, “ozone depleting chemicals, like chlorofluorocarbons (CFCs), can take several decades to centuries to fully leave the stratosphere due to their long atmospheric lifetimes, meaning it could take until the middle of the 21st century for the ozone layer to fully recover from past emissions”. I have found zero scientific knowledge on how long chemicals used in cloud seeding stay in our atmosphere where the ozone layer is. But there is scientific analysis of the banned chemicals and when they will leave the atmosphere which is approximately 50 to hundreds of years. I could only think it is the same for chemicals from jets and cloud seeding.
Let’s have a look at all the chemicals used in cloud seeding.
Silver iodide is the most common substance used in cloud seeding. It can break down ozone molecules in the atmosphere, leading to the depletion of the ozone layer. Ozone depletion can have severe consequences for the environment, including increasing our exposure to harmful ultraviolet radiation and the potential for climate change.
Sodium chloride (NaCl), or sea salt, can affect the ozone layer in a number of ways:
Chemical reactions
When combined with sunlight and snow, sea salt can create a chemical reaction that destroys ozone in the Arctic troposphere. This reaction occurs in the spring when sunlight interacts with snow that contains salt particles carried by wind and waves.
Potassium chloride (KCl) is a component in the sulfation process, which can contribute to the destruction of ozone in the stratosphere.
Solid carbon dioxide, also known as dry ice, when released into the atmosphere, can indirectly contribute to ozone depletion by increasing the concentration of carbon dioxide (CO2), which can cool the stratosphere, creating conditions that can facilitate ozone breakdown, particularly in the polar regions where the ozone hole forms.
The Montreal Protocol (September 16, 1987) banned chemicals:
A (CFCs, halons), B (other fully halogenated CFCs, carbon tetrachloride, methyl chloroform), C (HCFCs), E (methyl bromide), and F (HFCs).
Sources:
EPA, Purdue University, NOAA, Kiowa County Press, NCBI, Nasa Earth Observatory,
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