Finally, the satellite measurement itself may be influenced by changes in weather patterns.

But satellite measurements now suggest the plates are pushing together.

The hole this year is larger than North America, according to satellite measurements, officials said.

Since 1978, when direct satellite measurements of sea ice started, the average summertime minimum has been 2.4 million square miles.

Detecting a climate trend, the scientists said, will take at least another decade of satellite measurements.

It has also helped correct improper satellite measurements of surface heat flux.

However, he thought it would take another ten years of satellite measurements before the predicted temperature increases and climate changes could be confirmed.

Satellite measurements show that ozone loss worldwide has amounted to 2.9 per cent over the past 10 years.

The Argo program was designed to complement satellite measurements of sea surface height.

"The technical details of satellite measurements are really sort of grotesque."