Sentences with phrase «cause past ice ages»

And did airborne iron cause past ice ages?

Not exact matches

It provides new insight into the climatic relationships that caused the development of major ice - age cycles during the past two million years.

The assessment examines the following content; global warming, the greenhouse effect / gases, natural and human causes of past climate change, evidence of the little ice age, features of tropical storms and the effects and response to tropical storms.

For example, the ice age — interglacial cycles that we have been locked in for the past few million years seem to be triggered by subtle changes in the earth's orbit around the sun and in its axis of rotation (the Milankovitch cycles) that then cause ice sheets to slowly build up (or melt away)... which changes the albedo (reflectance) of the earth amplifying this effect.

How do you think climate scientists model and otherwise study past ice ages if they ignore their cause?

For example, how are the causes of past ice ages relevant to that question?

The discovery in the mid 19th century that there had been ice ages in the distant past proved that climate could change radically over much of the globe, a change vastly beyond anything mere humans seemed able to cause.

Scientists who have studied past phases of climate change have found that iron dust may have caused similar effects during ice ages and are hoping to replicate those without causing unwanted fallout.

The past ice ages were all caused by something very specific, right?

Sea - level rise during past warm periods IPCC faq: «What caused the ice ages...?»

6 Ice age — time in the past when continental glaciers covered large parts of Earth's surface Global warming — a gradual increase in the temperature of Earth's atmosphere Greenhouse gas — Gases in the atmosphere, such as carbon dioxide, that trap solar energy Ozone hole — a large area of reduced ozone concentration in the stratosphere, found over Antarctica Chlorofluorocarbon — chlorine compounds that are the main cause of ozone depletion KEY TERMS

But, Havent we had ice ages and warmer temps in the past, much before humans could cause any damage to the planet's environment?

Many past ice ages were caused by... 1.

Here, we argue that the twentieth and twenty - first centuries, a period during which the overwhelming majority of human - caused carbon emissions are likely to occur, need to be placed into a long - term context that includes the past 20 millennia, when the last Ice Age ended and human civilization developed, and the next ten millennia, over which time the projected impacts of anthropogenic climate change will grow and persist.

Have a look at this updated version of one of the articles here about past temperatures, it has good graphics and more detail about determining the past, plus links to good sources: http://gristmill.grist.org/story/2006/10/26/20495/240 The warming that ended the ice age was caused by changes in the earth's orbital inclination (Milankovich cycles).

It is common knowledge that the ice ages in the past were caused by variations in the Earth's orbit around the sun.

(c) There is a debate about the attribution (causes) of past warming — which probably varied over time — between natural drivers (e.g., rebound from the Little Ice Age, solar influences) and anthropogenic drivers (eg, CO2, aerosols, land use changes).

Argues that the twentieth and twenty - first centuries, a period during which the overwhelming majority of human - caused carbon emissions are likely to occur, need to be placed into a long - term context that includes the past 20 millennia, when the last Ice Age ended and human civilization developed, and the next ten millennia, over which time the projected impacts of anthropogenic climate change will grow and persist