The Ozone Hole

Antarctic ozone today: The 2023 polar vortex began to form in mid May and has grown to 32 million square kilometres (msqkm) since then and is near its largest. The area with potential Polar Stratospheric Clouds (PSC) also began to grow from mid May and reached a peak of around 26 msqkm in mid July. It is now at around 22 msqkm, somewhat above average. An ozone hole formed in late June due to dynamical effects, reaching an area of 3 msqkm, before disappearing again. The main ozone hole began to form in late July and has grown to 23 msqm, near the largest over the last decade. Ozone values are falling over Antarctica and building over the southern ocean. They currently range from a low of around 140 Dobson Units (DU) within the vortex to a high of around 430 DU outside the vortex over the Indian Ocean. The temperature of the ozone layer over Antarctica is near the winter minimum and is below the -78°C PSC formation threshold in most of the Antarctic ozone layer. The ozone layer temperature is warmest just outside the polar vortex and declines towards the equator and towards the pole. Ozone depletion is expected to significantly increase over the coming ten days.

Antarctic ozone today: The 2023 polar vortex began to form in mid May and has grown to 32 million square kilometres (msqkm) since then and is near its largest. The area with potential Polar Stratospheric Clouds (PSC) also began to grow from mid May and reached a peak of around 26 msqkm in mid July. It is now at around 22 msqkm, close to average. An ozone hole formed in late June due to dynamical effects, reaching an area of 3 msqkm, before disappearing again. The main ozone hole began to form in late July and has grown to 21 msqm, the largest over the last decade. Ozone values are falling over Antarctica and building over the southern ocean. They currently range from a low of around 160 Dobson Units (DU) within the vortex to a high of around 430 DU outside the vortex over the Southern Ocean. The temperature of the ozone layer over Antarctica is near the winter minimum and is below the -78°C PSC formation threshold in most of the Antarctic ozone layer. The ozone layer temperature is warmest just outside the polar vortex and declines towards the equator and towards the pole. Ozone depletion is expected to significantly increase over the coming ten days.

Antarctic ozone today: The 2023 polar vortex began to form in mid May and has grown to 30 million square kilometres (msqkm) since then. The area with potential Polar Stratospheric Clouds (PSC) also began to grow from mid May and reached a peak of around 26 msqkm in mid July. It is now at around 24 msqkm, close to average. An ozone hole formed in late June due to dynamical effects, reaching an area of 3 msqkm, before disappearing again. The main ozone hole began to form in late July and had grown to 13 msqm by August 23, which is larger than average. Ozone values are falling over Antarctica and building over the southern ocean. They currently range from a low of around 130 Dobson Units (DU) within the vortex over Halley station to a high of around 430 DU outside the vortex over the Southern Ocean. The temperature of the ozone layer over Antarctica is near the winter minimum and is below the -78°C PSC formation threshold in most of the Antarctic ozone layer. The ozone layer temperature is warmest just outside the polar vortex and declines towards the equator and towards the pole. Ozone depletion is expected to significantly increase over the coming ten days.

British Antarctic Survey Ozone Bulletin

Antarctic Situation at 2023 August 11

Antarctic ozone today: The 2023 polar vortex began to form in mid May and has grown to 30 million square kilometres (msqkm) since then. The area with potential Polar Stratospheric Clouds (PSC) also began to grow from mid May and reached a peak of around 26 msqkm in mid July. It remains at around 25 msqkm, close to average. An ozone hole formed in late June due to dynamical effects, reaching an area of 3 msqkm, before disappearing again. The main ozone hole began to form in late July and had grown to 6 msqm by August 8. Ozone values are falling over Antarctica and building over the southern ocean. They currently range from a low of around 210 Dobson Units (DU) within the vortex to a high of around 460 DU outside it. The temperature of the ozone layer over Antarctica is near the winter minimum and is below the -78°C PSC formation threshold in most of the Antarctic ozone layer. The ozone layer temperature is warmest just outside the polar vortex and declines towards the equator and towards the pole. Ozone depletion is expected to significantly increase over the coming ten days.

British Antarctic Survey Ozone Bulletin

Antarctic ozone today: The 2023 polar vortex began to form in mid May and has grown to 27 million square kilometres (msqkm) since then. It is stable. The area with potential Polar Stratospheric Clouds (PSC) is also growing and has reached 25 msqkm, close to average. An ozone hole formed in late June due to dynamical effects, reaching an area of 3 msqkm, before disappearing again. Ozone values are falling over Antarctica and building over the southern ocean. They currently range from a low of around 220 Dobson Units (DU) within the vortex to a high of around 410 DU outside it. The temperature of the ozone layer over Antarctica is nearing the winter minimum. It is below the -78°C PSC formation threshold in most of the Antarctic ozone layer. The ozone layer temperature is warmest just outside the polar vortex and declines towards the equator and towards the pole. Ozone depletion is expected to significantly increase over the coming ten days.

British Antarctic Survey Ozone Bulletin

Antarctic Situation at 2023 July 7
Antarctic ozone today: The 2023 polar vortex began to form in mid May and has grown to 23 million square kilometres (msqkm) since then. It is stable. The area with potential Polar Stratospheric Clouds (PSC) is also growing and has reached 24 msqkm, larger than usual. Ozone values are falling over Antarctica and building over the southern ocean. They currently range from a low of around 220 Dobson Units (DU) within the vortex to a high of around 410 DU outside it. The temperature of the ozone layer over Antarctica is falling from the summer maximum. It is now close to or below the -78°C PSC formation threshold in most of the Antarctic ozone layer. The ozone layer temperature is now warmest just outside the forming polar vortex and declines towards the equator and towards the pole.