Sentences with phrase «maximum global average temperature»

This included the long - term goal of limiting the maximum global average temperature increase to no more than 2 degrees Celsius above pre-industrial levels, subject to a review in 2015.

Not exact matches

spalding craft (2)-- Actually, there is an overwhelming abundance of evidence that the climate warmed to a maximum, so - called optimum, temperature at different times in different regions, but about 8 — 6 thousand years ago; it had been cooling, on average since until humans started added considerable quantities of global warming (so - called greenhouse) gases started in, say, 1850 CE.

For Pluto the temperatures were the global average at the maximum, median, and minimum insolation.

Though non-binding, some 100 heads of state gathered at the 2009 Copenhagen summit agreed to limit the rise in global temperatures to a maximum of 1.5 - 2C above the long - term average prior to the industrial revolution.

For example, during the «Holocene thermal maximum,» the warmest period of the past 10,000 years, the Arctic average temperature was two to three degrees warmer than it is today, while the global average was only a degree or so warmer.

The sea level high - stand was associated with the so - called Climatic Optimum or the Holocene Optimum, during 8000 to 4000 BC when average global temperatures reached their maximum level during the Holocene and were warmer than present day.

What is the global optimum average temperature for maximum productivity of the primary producers (green plants) in the food chain?

Figure 16.2: Projected number of days per year with a maximum temperature greater than 90 °F averaged between 2041 and 2070, compared to 1971 - 2000, assuming continued increases in global emissions (A2) and substantial reductions in future emissions (B1).

All of these characteristics (except for the ocean temperature) have been used in SAR and TAR IPCC (Houghton et al. 1996; 2001) reports for model - data inter-comparison: we considered as tolerable the following intervals for the annual means of the following climate characteristics which encompass corresponding empirical estimates: global SAT 13.1 — 14.1 °C (Jones et al. 1999); area of sea ice in the Northern Hemisphere 6 — 14 mil km2 and in the Southern Hemisphere 6 — 18 mil km2 (Cavalieri et al. 2003); total precipitation rate 2.45 — 3.05 mm / day (Legates 1995); maximum Atlantic northward heat transport 0.5 — 1.5 PW (Ganachaud and Wunsch 2003); maximum of North Atlantic meridional overturning stream function 15 — 25 Sv (Talley et al. 2003), volume averaged ocean temperature 3 — 5 °C (Levitus 1982).

This conclusion takes into account the approximately 62 year period natural cycle in global average surface temperatures that is obvious in the HadCRUT4 global average surface temperature data, that had a maximum in about 1945 and again in about 2007, and that seems to be the cause of the current «pause» in global average surface temperatures.

The Climatic Optimum: «By 5000 to 3000 BC average global temperatures reached their maximum level during the Holocene and were 1 to 2 degrees Celsius warmer than they are today.

This level would in turn give humanity a 50 % chance of limiting global warming to the internationally agreed limit of a maximum 2 °C global average temperature rise.

Backing that up, NASA says that 1) sea surface temperature fluctuations (El Niño - La Niña) can cause global temperature deviation of about 0.2 °C; 2) solar maximums and minimums produce variations of only 0.1 °C, warmer or cooler; 3) aerosols from natural sources such as volcanic eruptions (Mount Pinatubo for example) have caused average cooling of 0.3 °C, but recent eruptions have had not had significant effect.

The oceans take longer to stop warming but because of the ongoing reduction in forcing, the global average temperature reaches its maximum in not much more than a decade.