Sentences with phrase «global surface»
The phrase "global surface" refers to the outermost layer or topmost part of the Earth that covers the entire planet. It includes all the land, water, and other features on the Earth's surface, such as mountains, seas, and forests, that can be observed globally. Full definition
While the warming of global surface temperatures in recent years has slowed in large part due to the more efficient heat transfer to the deep oceans, that can't last forever.
skepticalscience.com
So what this means is that our planet has experienced 0.6 °C average global surface warming over the past 60 years.
One of the principle difficulties in testing relatively recent temperature projections is that there are a lot of short - term influences on global surface temperatures that introduce noise into the data.
Data for global surface temperature indicate little warming between 1998 and 2008 (1).
Their key finding - the contribution of each effect to the observed global surface warming trends over the four periods in question - is shown in Figure 1.
Figure 1 - Sea surface temperature trends scaled with global surface air temperature trends for half the climate models used in the study.
I used to do regular monthly global surface temperature updates earlier this year, but I stopped a few months ago.
In this scenario, there is approximately 2.4 °C global surface warming over the 21st century.
The agreement between 20th century global surface temperature observations and simulations with natural plus anthropogenic forcing provides the primary evidence to support this conclusion.
The figure below shows global surface temperatures records from the principal research groups around the world since 1970.
Given the widely noted increase in the warming effects of rising greenhouse gas concentrations, it has been unclear why global surface temperatures did not rise between 1998 and 2008.
2010 proved to have the highest measured global surface temperatures ever according to some data sets, but alas, still the line of questioning persists.
Climate models have also been accurately projecting global surface temperature changes for over 40 years.
They then applied a simple statistical correction using this relationship with sea surface temperatures to determine whether internal variability could explain the slowed global surface warming.
The report noted that within a few years, climate models would be able to reasonably project future global surface temperature changes.
One thing it does not represent is a metric of global surface heat content.
The excellent global surface temperature data shows about 0.8 C warming in the past 100 years.
A major inquiry has been launched into the reliability of official global surface temperature records following widespread allegations that data has been manipulated to prove that global warming is happening.
Nobody has any real idea what global surface temperatures will do in the near future.
The fact that you CAN ignore everything else and get good agreement with the basic global surface temperature indicates that you CAN ignore everything else on a global scale.
The effect of changes in anthropogenic and natural forcings on global surface temperature after 1998 is assessed with a statistical model that is estimated with a sample that ends in 1998.
The Australian and American researchers drew a similar comparison in their paper between strong trade winds and a slight cooling in global surface temperatures from 1940 to the 1970s.
Ironically, the analysis the «skeptics» are using to argue that global warming has stopped ends in a record hot year for global surface temperatures.
Figure 1 at the top of this post compares the four IPCC projections and the four contrarian predictions to the observed global surface temperature changes.
But there does not seem to be any solid agreement on what caused global surface temperatures to stop rising.
These estimates are very consistent, finding between 2 and 4.5 °C global surface warming in response to doubled carbon dioxide.
The findings might help explain why global surface temperatures have not risen as fast in the last ten years as they did in the 1980s and 1990s.
Despite the continued increase of greenhouse gas emissions from us, rise of global surface temperatures has been easing since 1998.
Net human and natural percent contributions to the observed global surface warming over the past 50 - 65 years.
That additional warming would put current global surface temperatures well above any other time over the past 2,000 years.