The stock answer is that climate is the long
term average of weather.
«Climate is, by definition, the long -
term average of weather, over many years.
Not exact matches
He has not really addressed the fact that the notion
of climate, as distinct from the notion
of weather, is not concerned with particular features
of a single trajectory or history, but with the fact that there are some general features about certain kinds
of time and system
averages over many trajectories - and that these
average features tend to show certain kinds
of regularity or slow secular variation that are not apparent in a single trajectory (the
term secular here has a technical meaning, not the common one
of «not religious»).
Better still, get rid
of the (
weather and El Nino influenced) short -
term five year
averaging and show long
term climate changes by putting ten and twenty year moving
averages on the data.
Perturbing the initial conditions gives a completely different trajectory (
weather), but this
averages out over time, and the statistics
of different long -
term runs are indistinguishable.
Averaging smoothes out day - to - day and year - to - year natural
weather variability and extremes, removing much
of the chaotic behavior, revealing any underlying long
term trends in climate, such as a long
term increase or decrease in temperature, or long
term shifts in precipitation patterns.
- What makes this period
of time statistically significant in
terms of climate (which is simply
average of weather over time)?
Climate is an
average of weather over «long»
term.
In the case
of climate models, this is complicated by the fact that the time scales involved need to be long enough to
average out the short -
term noise, i.e. the chaotic sequences
of «
weather» events.
[Response: Climate is the statistics
of weather (the
average, if you want to think
of it in simple
terms).
The definition
of climate is long -
term weather patterns or long -
term weather AVERAGES.
Thus, even though the ice extent is about equal to the long
term average right now, for summer
weather typical
of the past few years, the decline in ice area will be more rapid than in other years.
Could they produce sets
of weather - maps that if somehow integrated over 30 years could produce a «supermap» showing actual climate change in
terms of e.g
average windspeeds, rainfall, cloud - cover, pressure and so on?
that is what the
term «climate» means the
average weather stats from the previous 30 years for a given area... the climate has no power, is not a force, and cant be called the «cause»
of any
weather event.......
Climate change is the long -
term average of a region's
weather events lumped together.There are some effects
of greenhouse gases and global warming: melting
of ice caps, rising sea levels, change in climatic patterns, spread diseases, economic consequences, increased droughts and heat waves.
Climate is defined as long -
term averages and variations in
weather measured over a period
of several decades.
While the
weather is always changing, especially over the short
term, climate is the
average of weather patterns over a longer period
of time (usually 30 or more years).
Because
weather patterns vary, causing temperatures to be higher or lower than
average from time to time due to factors like ocean processes, cloud variability, volcanic activity, and other natural cycles, scientists take a longer -
term view in order to consider all
of the year - to - year changes.
Climate change (as the
term implies) is a change to the climate, which is really a change to the
average of the
weather.
Climate - Climate in a narrow sense is usually defined as the
average weather, or more rigorously, as the statistical description in
terms of the mean and variability
of relevant quantities over a period
of time ranging from months to thousands or millions
of years.
It is clear that in
terms of weather, environmental health, extreme events, snow, rain drought and flood, the impact
of a global
average is trivial or less.
Water vapor, which is a greenhouse gas, albeit short lived, and a component
of and response to
weather conditions — but not, being so ephemeral, a driver
of much longer
term weather patterns (or climate)-- and due to it's heavy prevalence the greenhouse gas that is on
average responsible for more re ra - radiated heat than any other, in fact is not warming, but cooling.
These
averaged maps remove some
of the variability caused by day - to - day
weather changes, instead showing longer -
term patterns that can affect
weather and climate both within and outside
of the Arctic.
Weather patterns that recur or persist over multiple seasons are called semipermanent highs and lows, because these patterns show up in long -
term averages of the regional
weather.
In probably the most depressing bit
of statistical research I've ever done, I looked up just how cold next week's
weather will be, compared to the long -
term average.
In
weather terms, you can't predict the exact route a storm will take but the
average temperature and precipitation over the whole region is the same regardless
of the route.
Summer
weather was cool relative to the last five years with low pressure systems over the central Arctic typical
of the long
term (30 year)
average.
«Or expressing that in
weather terms, you can't predict the exact route a storm will take but the
average temperature and precipitation will result the same for the region over a period
of time.»