Monday, September 26, 2016

U.S. Naval Research Laboratory (NRL) research physicists and engineers from the Plasma Physics Division, working at the High-frequency Active Auroral Research Program (HAARP) transmitter facility, Gakona, Alaska, successfully produced a sustained high density plasma cloud in Earth's upper atmosphere.
U.S. Naval Research Laboratory (NRL) research physicists and engineers from the Plasma Physics Division, working at the High-frequency Active Auroral Research Program (HAARP) transmitter facility, Gakona, Alaska, successfully produced a sustained high density plasma cloud in Earth's upper atmosphere. - See more at: file:///D:/Anna/Desktop/NRL%20Scientists%20Produce%20Densest%20Artificial%20Ionospheric%20Plasma%20Clouds%20Using%20HAARP%20-%20U.S.%20Naval%20Research%20Laboratory.htm#sthash.4SkTmwoy.dpuf
U.S. Naval Research Laboratory (NRL) research physicists and engineers from the Plasma Physics Division, working at the High-frequency Active Auroral Research Program (HAARP) transmitter facility, Gakona, Alaska, successfully produced a sustained high density plasma cloud in Earth's upper atmosphere. - See more at: file:///D:/Anna/Desktop/NRL%20Scientists%20Produce%20Densest%20Artificial%20Ionospheric%20Plasma%20Clouds%20Using%20HAARP%20-%20U.S.%20Naval%20Research%20Laboratory.htm#sthash.4SkTmwoy.dpuf
U.S. Naval Research Laboratory (NRL) research physicists and engineers from the Plasma Physics Division, working at the High-frequency Active Auroral Research Program (HAARP) transmitter facility, Gakona, Alaska, successfully produced a sustained high density plasma cloud in Earth's upper atmosphere. - See more at: file:///D:/Anna/Desktop/NRL%20Scientists%20Produce%20Densest%20Artificial%20Ionospheric%20Plasma%20Clouds%20Using%20HAARP%20-%20U.S.%20Naval%20Research%20Laboratory.htm#sthash.4SkTmwoy.dpuf
U.S. Naval Research Laboratory (NRL) research physicists and engineers from the Plasma Physics Division, working at the High-frequency Active Auroral Research Program (HAARP) transmitter facility, Gakona, Alaska, successfully produced a sustained high density plasma cloud in Earth's upper atmosphere. - See more at: file:///D:/Anna/Desktop/NRL%20Scientists%20Produce%20Densest%20Artificial%20Ionospheric%20Plasma%20Clouds%20Using%20HAARP%20-%20U.S.%20Naval%20Research%20Laboratory.htm#sthash.4SkTmwoy.dpuf
U.S. Naval Research Laboratory (NRL) research physicists and engineers from the Plasma Physics Division, working at the High-frequency Active Auroral Research Program (HAARP) transmitter facility, Gakona, Alaska, successfully produced a sustained high density plasma cloud in Earth's upper atmosphere. - See more at: file:///D:/Anna/Desktop/NRL%20Scientists%20Produce%20Densest%20Artificial%20Ionospheric%20Plasma%20Clouds%20Using%20HAARP%20-%20U.S.%20Naval%20Research%20Laboratory.htm#sthash.4SkTmwoy.dpuf
U.S. Naval Research Laboratory (NRL) research physicists and engineers from the Plasma Physics Division, working at the High-frequency Active Auroral Research Program (HAARP) transmitter facility, Gakona, Alaska, successfully produced a sustained high density plasma cloud in Earth's upper atmosphere. - See more at: file:///D:/Anna/Desktop/NRL%20Scientists%20Produce%20Densest%20Artificial%20Ionospheric%20Plasma%20Clouds%20Using%20HAARP%20-%20U.S.%20Naval%20Research%20Laboratory.htm#sthash.4SkTmwoy.dpuf

Wednesday, June 1, 2016

Hacking The Planet


1. What is geoengineering?
Geoengineering is an attempt to avoid or reduce the negative consequences of climate change by directly altering parts of the Earth’s natural system. It’s different from “mitigation” efforts, where people try to reduce emissions of [heat-trapping] greenhouse gases, or preserve natural carbon-dioxide storage or removal mechanisms like forests. It’s also distinct from “adaptation,” which involves dealing with the impacts of climate change.

"Geoengineering is not a cure. At best, it’s a Band-Aid or tourniquet; at worst, it could be a self-inflicted wound."

2. What are some examples of geoengineering?
Geoengineering schemes basically fall into two broad camps. The first involves reducing the amount of the sun’s energy reaching the surface of the planet. This could be done by injecting sulfate particles into the upper atmosphere – essentially mimicking a large volcanic eruption and the cooling that follows. Or injecting sea salt into the lower atmosphere to seed or brighten clouds so that they reflect incoming sunlight away from the planet. Another option might be to increase the reflectivity of large areas of the Earth’s surface by changing the mix of plants and vegetation.
The second main approach involves removing (or boosting the removal of) carbon from the atmosphere – essentially “negative emissions.” This might be achieved by stimulating ecosystems to “mop up” carbon or building large machines to absorb carbon dioxide and store it underground. In addition to slowing the rise in Earth’s temperature, reducing the amount of carbon dioxide accumulating in the air would help keep it from mixing in the oceans, where it makes the waters more acidic and can have catastrophic impacts on marine life and ecosystems. Scientists are already seeing this acidification happen today.

3. What would geoengineering solve, and what would it not solve?
Geoengineering is not a cure. At best, it’s a Band-Aid or tourniquet; at worst, it could be a self-inflicted wound.
By itself, hacking the climate system won’t fix the way society manages the planet, and in fact it can de-incentivize [effective management]. If geoengineering is perceived as a “silver bullet” that offers the illusion of consequence-free carbon pollution, then there’s no incentive to control emissions that are the root cause of the problem. Even if geoengineering could be made to work safely, we would have to continuously ramp it up to keep pace with accelerating emissions – and that’s not sustainable.
The climate has a lot of inertia; once it starts moving in a certain direction it may be difficult to stop. The carbon we are pumping into the atmosphere today is essentially permanent; natural processes take thousands of years to remove it. There may also be irreversible “tipping points” – cliffs, or points of no return – that could cause dramatic, abrupt climate changes like shifts in ocean circulation or irreversible melting of the Greenland ice sheet.
Generally, we don’t understand the risks of geoengineering well. Engineering the planet could make things worse, and it could cause serious social and political issues. All of these things suggest to me that geoengineering should be seen as a highly uncertain insurance policy or emergency response, not a solution.

"By itself, hacking the climate system won’t fix the way society manages the planet, and in fact it can de-incentivize [effective management]"

4. How is JPL involved in geoengineering?

We’re focused on improving our understanding of how the Earth system works, not on doing actual geoengineering. Other groups are addressing questions like: What’s the most efficient way to do cloud seeding? How could you inject aerosols into the stratosphere?
At JPL, we’re interested in working out how key climate processes are connected and how we can use satellite observations to provide policymakers with better information they can use to make objective decisions about geoengineering.
Equally important, we want to identify where limits in observations and scientific understanding preclude reliable assessments of the impact of geoengineering. Understanding the uncertainty is essential.

5. How are you working to inform decision-makers?

By offering them (and the public) better data about the Earth and how it responds to human actions, so that they can objectively weigh the pros and cons of geoengineering.
"Geoengineering should be seen as a highly uncertain insurance policy or emergency response, not a solution."