The knowledge gap may just have narrowed, however, with the publication of a new study in Nature (one of two we're reporting on this week, as it happens) that appears to move the explanation for one
type of climate variability from the natural to the human camp.
The word «Natural» in the title leads me to expect that there are at least two
types of climate variability: Natural and (presumably) Not - natural.
Not exact matches
The paradox is that this season stands in such stark contrast to the past 11 years
of drought, highlighting the
types of variability that
climate change can wreak on the hydrological cycle.
«Given the high
variability of climate in this region, we should not be totally surprised if very wet 1980s -
type conditions return at some point during our lives,» Williams said.
There are two
types of natural
variability: those external and internal to the
climate system.
Nature (with hopefully some constructive input from humans) will decide the global warming question based upon
climate sensitivity, net radiative forcing, and oceanic storage
of heat, not on the
type of multi-decadal time scale
variability we are discussing here.
To show, in a peer - reviewed scientifically defensible way that there is no reason to expect the
climate to warm in a monotonic
type fashion, that there is natural
variability along with anthropogenic forced warming and we shouldn't expect each year to be warmer than the next or even a run
of 10 years always to show warming.
In many cases, it is now often possible to make and defend quantitative statements about the extent to which human - induced
climate change (or another causal factor, such as a specific mode
of natural
variability) has influenced either the magnitude or the probability
of occurrence
of specific
types of events or event classes.»
Climate change can have two types of causes: external forcing or internal variability in the climate
Climate change can have two
types of causes: external forcing or internal
variability in the
climate climate system.
It is important to note that as the planet continues to warm, new high temperature records and some other
types of extremes will increasingly occur, but where they occur in a given year will not be predictable due to natural modes
of climate variability.
Of all the factors where uncertainties in forest hydrology and runoff remain, perhaps the most significant were the effects of soil types, long - term climate variability, and climate chang
Of all the factors where uncertainties in forest hydrology and runoff remain, perhaps the most significant were the effects
of soil types, long - term climate variability, and climate chang
of soil
types, long - term
climate variability, and
climate change.
Importantly, the changes in cereal yield projected for the 2020s and 2080s are driven by GHG - induced
climate change and likely do not fully capture interannual precipitation
variability which can result in large yield reductions during dry periods, as the IPCC (Christensen et al., 2007) states: ``... there is less confidence in the ability
of the AOGCMs (atmosphere - ocean general circulation models) to generate interannual
variability in the SSTs (sea surface temperatures)
of the
type known to affect African rainfall, as evidenced by the fact that very few AOGCMs produce droughts comparable in magnitude to the Sahel droughts
of the 1970s and 1980s.»
The goals
of this regional - scale monitoring program are to characterize the means,
variabilities, and trends
of climate - forcing properties
of different
types of aerosols, and to understand the factors that control these properties.
While natural
variability continues to play a key role in extreme weather,
climate change has shifted the odds and changed the natural limits, making certain
types of extreme weather more frequent and more intense.
Present - day ocean models do have some rudimentary capability to model El Nino - like
variability, but they are not yet able to reliably simulate decadal -
type variability, even though 1000 - year
climate runs exhibit
variability over a broad range
of time scales.
Further, large magnitude
variability may require revisiting the
types and magnitudes
of imposed forcings thought to be responsible for the observed 20th century
climate trajectory (12).
Further, large magnitude
variability may require revisiting the
types and magnitudes
of imposed forcings thought to be responsible for the observed 20th century
climate trajectory.