Sentences with phrase «global average surface temperature»

It's easy to see that there was a sharp increase in global average surface temperatures from the 1970s through the end of the 1990s.

It looks like some sort of hybrid between AR4 projections for tropical sea temperature increase and global average surface temperature rise.

Human civilization developed over a period of 10,000 years during which global average surface temperatures remained remarkably stable, hovering within one degree Celsius of where they are today.

Today scientists have very high confidence about human - caused global average surface temperature increase — a key climate indicator.

With an increase in global average surface temperatures comes higher odds of heat waves.

When it does end, they expect to see some rapid changes, including a sudden acceleration of global average surface temperatures.

The C.R.U. is only one of several groups who are analyzing the long term global average surface temperature trends drawing from mostly the same raw observed data.

Figure 8 shows the projected change in global average surface temperature for the various SRES.

And in some sense I think the scientific community and the diplomatic community have almost unwittingly played into the hands of the so - called climate denialists by focusing so much on global average surface temperatures when there are all kinds of factors that affect it.

«New Research Report on the Validity of Global Average Surface Temperature Data and EPA's GHG Endangerment Finding The Climate Alarmists» Gross Perversion of the Word Clean»

The discussion of whether 2012 is the 8th, 9th 10th or 11th warmest annual global average surface temperature is intellectually engaging (and a bit of a waste of the engaged intellect), but a more significant point is that the warm years since 1998 have all occured without a transient bump comparable to the one that 1998 recieved from the signifcant El Nino that occured.

Steve — With respect to comparisons of observed global average surface temperature anomalies and trends with the model results, it is important to recognize the major uncertainties that remain in the measured data, as we summarize in

Hansen's renewed calls for aggressive climate policy comes as the World Meteorological Organization confirmed that 2015 smashed temperature records, with global average surface temperature topping previous records by at least 0.76 degrees Celsius above the average temperatures from 1961 - 1990.

Those suggest that the concentration of CO2 last approached 400 ppm about 3 to 5 million years ago, a period when global average surface temperature is estimated to have been about 2 to 3.5 °C higher than in the pre-industrial period.

We found that unforced variability is large enough so that it could have accounted for multidecadal changes in the rate - of - increase of global average surface temperature over the 20th century.

A paper in this week's Nature by Caroline Snyder at Stanford provides a fresh attempt at estimating global average surface temperatures across the Pleistocene (her estimates cover the last 2 million years).

One study estimates that there are likely to be places on Earth where unprotected humans without cooling mechanisms, such as air conditioning, would die in less than six hours if global average surface temperature rises by about 12.6 ° F (7 ° C).16 With warming of 19.8 - 21.6 ° F (11 - 12 ° C), this same study projects that regions where approximately half of the world's people now live could become intolerable.7

It is the third year in a row that global average surface temperature set a new record, and the fifth time the record has been broken since the start of the twenty - first century.

It shows up well in their Figure 1a about which they state ``... you can see how well the POGA H global average surface temperature matches the observations...» It matches well the phony eighties and nineties and would be off the mark if the real temperatures were substituted.

When international delegates meet in Paris next year to negotiate a new global climate agreement, they'll be aiming to keep global average surface temperatures from rising more than 2 degrees Celsius beyond pre-industrial levels.

The Right Climate Stuff Research Team of retired NASA scientists and engineers proposes a new metric, Transient Climate Sensitivity (TCS), that is the increase in global average surface temperature due to the actual atmospheric CO2 level history in the atmosphere when CO2 levels are doubled with respect to pre-industrial levels.

A striking characteristic of the most recent 21st Century negative phase of the IPO is that on this occasion global average surface temperatures continued to rise, just at a slower rate.

Many people have died naturally but murder still exists; it is up to the police to learn whether a given mortality was natural or not, and up to climate science to learn what is causing ongoing changes (and we have good confidence that most of what is happening to climatic global average surface temperature is being caused by humanity now).

In 2) i wanted to discuss the different forcing efficacies of solar shortwave compared to anthro fossil carbon combustion upon global average surface temperature, rather than the emission temperature at top of atmosphere

Hotter temperatures: If emissions keep rising unchecked, then global average surface temperatures will be at least 2ºC higher (3.6 ºF) than pre-industrial levels by 2100 — and possibly 3ºC or 4ºC or more.

But 2015 is the height of a very large El Niño, a quasi-periodic warming of tropical Pacific waters that is known to kite global average surface temperature for a year or so.

The NASA GISTEMP global average surface temperature data have been updated to include January 2016, which had the largest monthly temperature anomaly ever recorded: 1.13 °C elsius above the 1951 - 1980 baseline.

Second, IAMs specifically aim to have global average surface temperatures below 1.5 C in 2100, rather than limiting warming to no more than 1.5 C at any point between present and 2100.