The Antarctic springtime ozone hole is one of the most dramatic manifestations of global change.

In 2004, the size of the ozone hole was smaller than the average over the past decade, although the total amount of ozone destroyed, which relates to the size, depth and persistence of the ozone hole, was estimated to be much higher than most years in the past decade.

The term quot ozone hole quot describes a large area of intense ozone depletion that occurs over Antarctica during late August through early October and typically breaks up in late November.

That year, a large hole in the ozone layer over the Antarctic was detected, prompting Vienna Convention parties quickly to negotiate a graduated phase out of ozone depleting substances under the Montreal Protocol.

Scientists have determined that chlorine products from human activities, such as electronics manufacturing, air conditioning, and refrigeration, are a primary cause of ozone hole formation.

In that regard it should be noted that annual variations in the depth, size and persistence of the ozone hole depend significantly on changing meteorological conditions in the stratosphere.

of the Ozone Layer Ozone Layer

of the Ozone Layer Ozone Layer

Hole

MS But what about walking from hole to hole?

The NSF apos s Office of Polar Programs continued during the year to support researchers studying the cause and effects of the Antarctic ozone hole at each of three year round stations.

Money wasted. Hole after hole dug in this blasted desert.

Hole radius

Black Hole

Black hole

Hole Run

Pot Hole

New Hole

Hole Punch

99. Woods Hole Research Center, Woods Hole, United States of America

Imagine a lighter black hole falling into a very heavy black hole.

Things could have become much worse the ozone destroying properties of halogens have been studied since the mid 1970 s. If it had turned out that chlorine behaved chemically like bromine, the ozone hole would by then have been a global, year round phenomenon, not just an event of the Antarctic spring.

Switch to Hole

Ozone depletion

Ozone Secretariat

They're digging a hole.

Woods Hole Research Center

Woods Hole Research Center

My place a hole?

In that godforsaken hole.

Black hole in Calcutta!

A goddamn hollow hole.

Close the pneumonia hole.

It's a priest hole.

The Ozone Mafia

C. Stratospheric ozone

National Ozone Officer

Change and Ozone

Ozone Program Coordinator

(b) Ozone observations

Heavenly Hillsboro, does it have a hole in its head or its head in a hole?

C. Changes to the Ozone Secretariat website invitation for suggestions The Ozone Secretariat is in the process of making changes to the Ozone website.

Tropospheric Ozone Tropospheric ozone has just been recognized as a potentially important greenhouse gas.

How deep is the hole?

A hole in your head.