The Human Impacts Database

A collection of useful numbers for quantifying the impacts of the human presence on Earth.

Ozone minimum of the Antarctic ozone hole

Atmospheric & Biogeochemical CyclesOzone

This quantity comes from a time series measurement and the most recent value (2020) is reported.

Value: ≈ 100 Dobson Units
HuID: 51095
Relevant Year(s): 2020
Summary: The average minimum of ozone abundance in the Antarctic ozone hole during the period September 21 – October 16 (Southern Hemisphere spring). 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”.
Method: The data for 1979–1992 are from the TOMS instrument on the NASA/NOAA Nimbus-7 satellite. The data for 1993–1994 are from the TOMS instrument on the Soviet-built Meteor-3 satellite. The data for 1996–October 2004 are from the NASA Earth Probe TOMS satellite. The data starting from November 2004 through June 2016 are from the OMI instrument (KNMI / NASA) onboard the Aura satellite. They are the OMTO3d that have been processed in a manner similar to the TOMS data from earlier years. The data starting July 2016 are from the OMPS instrument onboard the Suomi NPP satellite. The ozone minimum is determined only from data actually contained in the processed satellite data. Shadings in the figure show the full range of the ozone minimum daily measurement for the period September 21 – October 16.
Source: NASA Ozone Watch Ozone hole statistics. (2020)
Dataset: Antarctic ozone hole meteorology during Southern Hemisphere spring (NASA_ozone_hole_evolution_SH_spring.csv)
regional resolution
Trend:
Original Data License: CC-BY-NC 4.0
Added By: ilopezgo