Sentences with phrase «with changes in solar output»

> Some of the «wiggles» in temperature (such as the Little Ice Age signal) correlate with changes in solar output.

However, there is significant debate as to the cause of these D - O events, with changes in solar output being just one possibility (NOAA Paleoclimatology).

Not exact matches

When scientists use climate models for attribution studies, they first run simulations with estimates of only «natural» climate influences over the past 100 years, such as changes in solar output and major volcanic eruptions.

The change is small — about 0.1 percent — but other, longer - term shifts in solar output seem to correlate with noticeable shifts in earthly climate.

Periods of volcanism can cool the climate (as with the 1991 Pinatubo eruption), methane emissions from increased biological activity can warm the climate, and slight changes in solar output and orbital variations can all have climate effects which are much shorter in duration than the ice age cycles, ranging from less than a decade to a thousand years in duration (the Younger Dryas).

If you could have the earth do its own thing for 1000 years, with not no changes in forcing (i.e. solar output constant, have no human - caused CO2 changes, etc.), you will still get variabilitiy.

However, nobody could come up with a good explanation for how the slight changes in solar energy output could change climate so much.

The RealClimate post on Polar Amplification... http://www.realclimate.org/index.php/archives/2006/01/polar-amplification/... begins with the statement, «' Polar amplification» usually refers to greater climate change near the pole compared to the rest of the hemisphere or globe in response to a change in global climate forcing, such as the concentration of greenhouse gases (GHGs) or solar output (see e.g. Moritz et al 2002).»

The models currently assume a generally static global energy budget with relatively little internal system variability so that measurable changes in the various input and output components can only occur from external forcing agents such as changes in the CO2 content of the air caused by human emissions or perhaps temporary after effects from volcanic eruptions, meteorite strikes or significant changes in solar power output.

More often, models have been tested by hindcasting — they are forced with a known change starting at a past known climate state, and asked whether they can accurately project the output (e.g., a temperature change resulting from a change in CO2, solar forcing, etc.)?

«Since irradiance variations are apparently minimal, changes in the Earth's climate that seem to be associated with changes in the level of solar activity — the Maunder Minimum and the Little Ice age for example — would then seem to be due to terrestrial responses to more subtle changes in the Sun's spectrum of radiative output.

Time - of - use (TOU) rates, even without net energy metering, could change the value proposition in places like California and Texas because solar output is «so in line with peak pricing, especially during those late afternoon summer hours,» he said.

It's also changes in the solar wind and interplanetary magnetic field, which cycles along with energy output and shields the earth from galactic cosmic rays.

They concluded that with a bit of help from changes in solar output and natural climatic cycles such as the El Nino Southern Oscillation (ENSO), the growth in the volume of aerosols being pumped up power station chimneys was probably enough to block the warming effect of rising greenhouse gas emissions over the period 1998 - 2008.

They concluded that with a bit of help from changes in solar output and natural climatic cycles such as the El Nino Southern Oscillation (ENSO),..

As they stand at present the models assume a generally static global energy budget with relatively little internal system variability so that measurable changes in the various input and output components can only occur from external forcing agents such as changes in the CO2 content of the air caused by human emissions or perhaps temporary after effects from volcanic eruptions, meteorite strikes or significant changes in solar power output.

Could it be that the rise and fall in our CFC output was just coincidental with natural changes from solar variability?

Certainly, with no convincing explanation for the major climate variations we know have occurred over 10K to multi-M year periods, I would be very hesitant to assume that changes in solar output could not be a contributor.