Knoxville's Joker
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After having a spat with someone saying there were multiple holes in the ozone. I looked things up myself. Not really
These are image sites. I am not pasting for sake of brevity and for those with limited bandwidth.
Maximum ozone hole extent over the southern hemisphere, from 1979 to 2019 — European Environment Agency (europa.eu)
World Wide Daily Ozone Map (eldoradoweather.com)
Source: NOAA
NASA Ozone Watch: Latest status of ozone
Ozone facts
What is ozone?
Ozone is a colorless gas. Chemically, ozone is very active; it reacts readily with a great many other substances. Near the Earth’s surface, those reactions cause rubber to crack, hurt plant life, and damage people’s lung tissues. But ozone also absorbs harmful components of sunlight, known as “ultraviolet B”, or “UV-B”. High above the surface, above even the weather systems, a tenuous layer of ozone gas absorbs UV-B, protecting living things below.
What is a Dobson Unit?
The Dobson Unit (DU) is the unit of measure for total ozone. If you were to take all the ozone in a column of air stretching from the surface of the earth to space, and bring all that ozone to standard temperature (0 °Celsius) and pressure (1013.25 millibars, or one atmosphere, or “atm”), the column would be about 0.3 centimeters thick. Thus, the total ozone would be 0.3 atm-cm. To make the units easier to work with, the “Dobson Unit” is defined to be 0.001 atm-cm. Our 0.3 atm-cm would be 300 DU.
What is the ozone hole?
Each year for the past few decades during the Southern Hemisphere spring, chemical reactions involving chlorine and bromine cause ozone in the southern polar region to be destroyed rapidly and severely. This depleted region is known as the “ozone hole”. The area of the ozone hole is determined from a map of total column ozone. It is calculated from the area on the Earth that is enclosed by a line with a constant value of 220 Dobson Units. The value of 220 Dobson Units is chosen since total ozone values of less than 220 Dobson Units were not found in the historic observations over Antarctica prior to 1979. Also, from direct measurements over Antarctica, a column ozone level of less than 220 Dobson Units is a result of the ozone loss from chlorine and bromine compounds.
But getting to things it does appear there is information indicating the hole recently got bigger. But if you look at the historical photos, it is a cycle. We are in a grand solar maximum to come into a grand solar minimum so fluctuations in extremes, very much possible.
Given all the COVID stuff this is indicative that human activity is not causing this.
Watch air pollution flow across the planet in real time | Science | AAAS
China's air is notoriously toxic: Each year, it contributes to the premature deaths of some 1.6 million people. Concerned about how such pollution was affecting his family, Beijing-based data scientist Yann Boquillod founded AirVisual Earth, an online air pollution map that uses data from satellites and more than 8000 monitoring stations to display global air pollution in real time. The AirVisual Earth interactive maps prevailing wind patterns and shows color-coded concentrations of PM2.5—airborne particulate matter less than 2.5 microns in diameter that can penetrate deep into the lungs. Users can zoom in, tilt, and spin the globe for better viewing. The air pollution visualization was crafted "so people really understand how bad it is," says Boquillod, who hopes an informed citizenry will pressure governments and communities to clear the air. AirVisual also delivers 3-day air pollution forecasts for 6000 cities to smartphones, and it recently began selling low-cost monitors people can use to track indoor and outdoor air pollution. "People want to share that data," Boquillod says.
Note that there is no clear picture of airflow around China. Gee wonder why? But it is apparent that pollution from China and Asia is not a contributor to the phenomena of the ozone, the airflows do not have cross oceanic flows for a straight path to allow pathogens or pollutants to affect this.
Whatever is occuring around the South Pole is entirely outside of human hands. It is a geological and intrasolar process, nothing terrestrially based as a source.
The Earth's orbit around the Sun | Earth Space Lab – interactive 3D animations
This is a model that gives you a better idea of things. Perhaps it is solar activity causing the hole, not human interactions?
Or at least that is my initial read pulling these sources together.
These are image sites. I am not pasting for sake of brevity and for those with limited bandwidth.
Maximum ozone hole extent over the southern hemisphere, from 1979 to 2019 — European Environment Agency (europa.eu)
World Wide Daily Ozone Map (eldoradoweather.com)
Our ozone layer protects us from harmful ultraviolet solar radiation. Ozone is a gas made up of three oxygen atoms. Just like any other gas, it circulates in the atmosphere. During autumn months ultraviolet energy [UV] from the sun splits chlorine molecules residing in the atmosphere above the South Pole. These chlorine atoms are highly reactive and begin to turn ozone (O3) into molecular oxygen (O2), which causes the infamous Antarctic ozone hole. Holes are not limited to the South Pole only however. They also form in the North Pole and other regions around the world. The Antarctic hole is famous due to the size and relative longevity, compared to other locations on earth. NOAA's polar orbiting satellites are used to monitor the ozone hole. This daily imagery uses infrared and UV data combined from the POES HIRS and SBUV/2 sensors to measure the ozone concentration around the world. Areas colored in shades of blue are normal or safe levels of stratospheric ozone; areas colored red are below the 220 Dobson Unit level and are considered dangerously low. |
Source: NOAA
NASA Ozone Watch: Latest status of ozone
Ozone facts
What is ozone?
Ozone is a colorless gas. Chemically, ozone is very active; it reacts readily with a great many other substances. Near the Earth’s surface, those reactions cause rubber to crack, hurt plant life, and damage people’s lung tissues. But ozone also absorbs harmful components of sunlight, known as “ultraviolet B”, or “UV-B”. High above the surface, above even the weather systems, a tenuous layer of ozone gas absorbs UV-B, protecting living things below.
What is a Dobson Unit?
The Dobson Unit (DU) is the unit of measure for total ozone. If you were to take all the ozone in a column of air stretching from the surface of the earth to space, and bring all that ozone to standard temperature (0 °Celsius) and pressure (1013.25 millibars, or one atmosphere, or “atm”), the column would be about 0.3 centimeters thick. Thus, the total ozone would be 0.3 atm-cm. To make the units easier to work with, the “Dobson Unit” is defined to be 0.001 atm-cm. Our 0.3 atm-cm would be 300 DU.
What is the ozone hole?
Each year for the past few decades during the Southern Hemisphere spring, chemical reactions involving chlorine and bromine cause ozone in the southern polar region to be destroyed rapidly and severely. This depleted region is known as the “ozone hole”. The area of the ozone hole is determined from a map of total column ozone. It is calculated from the area on the Earth that is enclosed by a line with a constant value of 220 Dobson Units. The value of 220 Dobson Units is chosen since total ozone values of less than 220 Dobson Units were not found in the historic observations over Antarctica prior to 1979. Also, from direct measurements over Antarctica, a column ozone level of less than 220 Dobson Units is a result of the ozone loss from chlorine and bromine compounds.
But getting to things it does appear there is information indicating the hole recently got bigger. But if you look at the historical photos, it is a cycle. We are in a grand solar maximum to come into a grand solar minimum so fluctuations in extremes, very much possible.
Given all the COVID stuff this is indicative that human activity is not causing this.
Watch air pollution flow across the planet in real time | Science | AAAS
China's air is notoriously toxic: Each year, it contributes to the premature deaths of some 1.6 million people. Concerned about how such pollution was affecting his family, Beijing-based data scientist Yann Boquillod founded AirVisual Earth, an online air pollution map that uses data from satellites and more than 8000 monitoring stations to display global air pollution in real time. The AirVisual Earth interactive maps prevailing wind patterns and shows color-coded concentrations of PM2.5—airborne particulate matter less than 2.5 microns in diameter that can penetrate deep into the lungs. Users can zoom in, tilt, and spin the globe for better viewing. The air pollution visualization was crafted "so people really understand how bad it is," says Boquillod, who hopes an informed citizenry will pressure governments and communities to clear the air. AirVisual also delivers 3-day air pollution forecasts for 6000 cities to smartphones, and it recently began selling low-cost monitors people can use to track indoor and outdoor air pollution. "People want to share that data," Boquillod says.
Note that there is no clear picture of airflow around China. Gee wonder why? But it is apparent that pollution from China and Asia is not a contributor to the phenomena of the ozone, the airflows do not have cross oceanic flows for a straight path to allow pathogens or pollutants to affect this.
Whatever is occuring around the South Pole is entirely outside of human hands. It is a geological and intrasolar process, nothing terrestrially based as a source.
The Earth's orbit around the Sun | Earth Space Lab – interactive 3D animations
This is a model that gives you a better idea of things. Perhaps it is solar activity causing the hole, not human interactions?
Or at least that is my initial read pulling these sources together.