Sentences with phrase «to be attributable to human activities»

... past climate changes were natural in origin (see FAQ 6.1), whereas most of the warming of the past 50 years is attributable to human activities.

As an alternative, the researchers propose that countries base their policies on a new kind of index: How much current global warming is attributable to human activity.

I suspect that part of the observed surface warming will ultimately be attributable to human activity.

A prudent society should therefore examine if a hotter globe can be solely attributed to natural processes, as distinct from human ones, and determine how much of the recent rise in temperature is attributable to human activity and how much to natural causes.

According to the Zhu et al., 91 % of the greening is attributable to human activity.

The definitive statement of the IPCC was that more than half of observed warming was attributable to human activity.

In 2001 the third assessment report (TAR) upgraded this by saying «There is new and stronger evidence that most of the warming observed over the last 50 years is attributable to human activities».

In their most recent report, published in 2001, the IPCC stated that most of the observed warming of the last 50 years is likely to be attributable to human activities (primarily, burning of fossil fuels, which increases atmospheric concentrations of greenhouse gases such as carbon dioxide).

In the most recent Third Assessment Report (2001), IPCC wrote «There is new and stronger evidence that most of the warming observed over the last 50 years is attributable to human activities» This section is trying to cast doubt on the IPCC report, one of the most comprehensive climate change studies.

In 2001 it was claimed «there is new and stronger evidence that most of the warming observed over the last 50 years is attributable to human activities» and the current report concludes says it is: «90 % probable» that the recent warming is «due to the observed increase in anthropogenic greenhouse gas concentrations».

In an e-mail exchange, Ka - Kit Tung noted how this work can help reveal the steady warming in the background that is attributable to human activities:

The 2001 report said: «There is new and stronger evidence that most of the warming observed over the last 50 years is attributable to human activities.»

The evidence is conclusive that warming has occurred and most of it is attributable to human activity.

That then begs the question that since this couldn't have been attributable to human activity, why can't what caused these warm periods have caused the warmth we have seen recently?

3 «There is new and stronger evidence that most of the warming observed over the last 50 years is attributable to human activity» Intergovernmental Panel on Climate Change (United Nations), Third Assessment Report, 2001

«Another unusual aspect of recent climate change is its cause: past climate changes were natural in origin, whereas most of the warming of the past 50 years is attributable to human activities.»

We can then determine if the recent rise in temperature is a significant departure from long - term trend, and evaluate how much of the warming is attributable to human activity and how much to natural causes.

There is new and stronger evidence that most of the warming observed over the last 50 years is attributable to human activities.»