Esempi dal corpus di testo per natural variability
1. Field said that "changes since the 1'70s have been particularly unusual and show that ocean ecosystems in the northeastern Pacific have passed some threshold of natural variability."
2. Goal 1÷ Improve knowledge of Earth‘s past and present climate and environment, including its natural variability, and improve understanding of the causes of observed variability and change.
3. "What is clear is that our increased confidence in land–based temperature data in no way implies or supports a conclusion that recent observed warming is due to man instead of natural variability," said Inhofe‘s spokesman, Matthew Dempsey.
4. They published a paper in the journal Geophysical Research Letters two years ago suggesting that Mann‘s approach underplayed the importance of natural variability and that temperatures in the 15th century rivaled current levels.
5. Holland, director of the Mesoscale and Microscale Meteorology Division of the federal research center, said tropical storm anomalies in the 1'40s and 1'50s can be explained by natural variability.