Photo Credit: fmc.nikon.d40
"We use computer models to predict how the world will respond to carbon dioxide additions to the atmosphere from human activities," said Sigman, "and one way of testing them is to apply them to past earth conditions." >>
Gill has been researching a period of rapid cooling 13,000 years ago. She talked about how understanding the past can be key to understanding the future. >>
Dr. Allen talked to EarthSky about how an earthquake early warning system could work in California. >>
Shindell explains why regulating greenhouse gas-emitting activity would both improve air quality and slow climate change. to reduce emissions, you look at particular activities - like burning coal to generate electricity, or driving vehicles. >>
Titov explained that, today, as soon as an earthquake hits the Pacific, scientists collect data from tsunami detectors sitting at the bottom of the ocean. This information gets plugged into computer models. >>
"Since CO2, a greenhouse gas, warms the Earth, ocean life effectively works to cool the Earth by helping remove CO2 from the atmosphere," says Sigman. >>
Schnell said that if countries set requirements to cut carbon dioxide emissions, NOAA's observatories would serve as a kind of atmospheric fact checker. >>
"In Africa we have a special concern about abrupt climate change," said atmospheric scientist Kerry Cook, "because we know from the records of past climate that it’s possible for climate to change abruptly in this region." >>
Holdren said science will be needed to devise ways to use energy more efficiently, and shift to energy sources such as wind, solar, and others. >>
"In many ways, the questions that are still outstanding about what causes glacial cycles are extremely relevant for also understanding our current situation," says Huybers. >>
Burkett warned of the possibility of 'abrupt climate change' - rapid, large-scale climate change that could take place in just a few decades. >>