Sentences with phrase «combination of natural cycle»
Last summer's record loss of ice was due to a combination of natural cycle and global warming factors: «more greenhouse gases, an unusual wind pattern, and warming of the ocean water in regions with reduced sea ice.»
https://dotearth.blogs.nytimes.com/ Not exact matches
There are different theories for why SAD may occur, including genetic factors, poor regulation of serotonin — a neurotransmitter that has been found to be lower in the winter in individuals with SAD — and higher melatonin levels, which in combination with low serotonin, wreaks havoc on the natural circadian rhythm and the sleep - wake cycle.
If someone is taking synthetic progestin, in combination with synthetic estrogen, once they have begun using natural progesterone, simply cease the use of synthetic progestin at the end of its current 12 - day cycle of use.
Over recent years we have witnessed a growing trend in outdoor adventure sports such as Scuba diving, hiking, rock - climbing, paragliding, and cycling — the primary draw being the combination of impressive mountains and valleys, perfect climate and numerous areas of outstanding natural beauty
Weather events will always result from a combination of deterministic factors (including greenhouse gas forcing or slow natural climate cycles) and stochastic factors (pure chance).
On multi-decadal timeframes, GH gas forcing and the PDO / AMO combination have been having fairly even in their relative forcing over the past century, but the GH gas forcing is growing so large that it now dominating these longer - term natural variations... so the kicker is that the rapidly increasing GH gases, now at their highest levels in millions of years, are very likely influencing the nature of ENSO, PDO, AMO, and other formerly «natural» cycles.
By comparing modelled and observed changes in such indices, which include the global mean surface temperature, the land - ocean temperature contrast, the temperature contrast between the NH and SH, the mean magnitude of the annual cycle in temperature over land and the mean meridional temperature gradient in the NH mid-latitudes, Braganza et al. (2004) estimate that anthropogenic forcing accounts for almost all of the warming observed between 1946 and 1995 whereas warming between 1896 and 1945 is explained by a combination of anthropogenic and natural forcing and internal variability.
'' «I believe climate change is due to a combination of factors, including natural cycles, sun spots and human activity.
In 1975 Wallace Broeker (the guy who first used the phrase «global warming», predicted a rapid transition to warming in the 1980s, caused by a combination of rapidly rising CO2 emissions and a natural temperature cycle (derived from work on Greenland ice cores at Camp Century) which showed a rapid warming phase up to 1940, followed by the cooling phase which was attenuated by CO2.
The authors say this «slowdown» was caused by a combination of natural ocean cycles, volcanoes going off, less energy coming from the sun and changes in the amounts of tiny particles in the atmosphere, mainly from industrial pollution.
[3] Each state has interim targets it must meet beginning in 2020, and the EPA proposed that states use a combination of four «building blocks» to achieve the emissions reductions: (1) improving the efficiency (heat rate) of existing coal - fired power plants; (2) switching from coal - fired power by increasing the use and capacity factor, or efficiency, of natural - gas combined - cycle power plants; (3) using less carbon - intensive generating power, such as renewable energy or nuclear power; and (4) increasing demand - side energy - efficiency measures.
The impact of the Arctic as a source of natural methane and CO2 can be monitored by measuring the concentrations of these gases in samples from around the world (in combination with models), as is being done by the NOAA Carbon Cycle Greenhouse Gas program7, although maintaining these networks in an era of budget cuts is an area of concern.
The baseline or ambient temperature at this time during the current inter-glacial (Holocene) period is entirely attributed to the combination of various natural celestial cycles such as solar energy output, and orbital mechanics of axial tilt, procession, and positions of the hemispheres during progression of the orbital ellipse.
Now, how much of this dragon king event was caused by human activities and how much was caused by natural cycles is certainly an interested issue to debate, however, it really doesn't make that much of a difference if we agree that it was a unique combination of the two that precipitated this event, such that it happened when it did because of this combination.
What's certain is that a combination of deformation at the upper corners, a thin separator and the mechanical stresses due to natural cycling make for a major failure mechanism.