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The Tempestry Project is a collaborative fiber arts project that presents global warming data in visual form through knitted or crocheted artwork. The project is part of a larger "data art" movement and the developing field of climate change art, which seeks to exploit the human tendency to value personal experience over data by creating accessible experiential representations of the data.
The overall impact of clouds on global climate depends on factors such as cloud type, altitude, thickness, and the amount of water or ice they contain. Thin, high-altitude cirrus clouds tend to have a net warming effect, since they allow incoming solar radiation to pass through while trapping heat radiating from the Earth's surface.
Other approaches to mitigating climate change have a higher level of risk. Scenarios that limit global warming to 1.5 °C typically project the large-scale use of carbon dioxide removal methods over the 21st century. [280] There are concerns, though, about over-reliance on these technologies, and environmental impacts. [281]
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If climate change causes low-level cloud cover to become more widespread, then these clouds will increase planetary albedo and contribute to cooling, making the overall cloud feedback negative (one that slows down the warming). But if clouds become higher and thinner due to climate change, then the net cloud feedback will be positive and ...
World leaders are meeting in Paris this month in what amounts to a last-ditch effort to avert the worst ravages of climate change. Climatologists now say that the best case scenario — assuming immediate and dramatic emissions curbs — is that planetary surface temperatures will increase by at least 2 degrees Celsius in the coming decades.
Collectively, feedbacks tend to amplify global warming or cooling. [31]: 94 Clouds are responsible for about half of Earth's albedo and are powerful expressions of internal variability of the climate system. [32] [33] They may also act as feedbacks to forcings, and could be forcings themselves if for example a result of cloud seeding activity.
Scientists subsequently tested the hypothesis. Some concluded that there was no evidence supporting the hypothesis. [3] Others found evidence suggesting that increased sea surface temperature (SST) in the tropics did indeed reduce cirrus clouds but found that the effect was nonetheless a positive climate feedback rather than the negative feedback that Lindzen had hypothesized.