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Originally posted by Phage
reply to post by SteelToe
www.global-warming-geo-engineering.org...
Can you find any direct references to stratospheric aerosols being used to enhance high level clouds to reduce forcing?
Preparations are underway for a unique test of engineering technology that could open up new ways to reduce atmospheric temperatures caused by climate change, and complement conventional measures to reduce carbon emissions.
The test, the first of its kind in the UK, is expected to take place in the next few months, it was announced today at the British Science Festival in Bradford.
It is part of the SPICE project (Stratospheric Particle Injection for Climate Engineering), a collaboration between researchers at the Universities of Bristol, Cambridge, Edinburgh and Oxford, together with Marshall Aerospace.
PUBLISHED
September 14, 2011
What I have presented below are not implementation plans either. Instead, I want to show how doable these options are and what must be considered if they are to be carried out. When I am done, you will see that these are not science fiction as these have been lumped together by the media with ideas that are, but large-scale engineering projects that can be undertaken within 5-10 years using existing technologies. It is the modeling and the understanding of impacts and effectiveness that is lacking, not the hardware or the technical know-how.
The SPICE project - Stratospheric Particle Injection for Climate Engineering
The SPICE project will investigate the effectiveness of Solar Radiation Management (SRM) using stratospheric particles. It addresses the three grand challenges in solar radiation management: 1. How much, of what, needs to be injected where into the atmosphere to effectively and safely manage the climate system? 2. How do we deliver it there? 3. What are the likely impacts? These questions are addressed through 3 coordinated and inter-linked work packages which are summarised here and described in detail in section 3.
CUED is responsible for the Delivery systems (WP2):
WP2 Particles are to be injected into the stratosphere at heights upwards of 10km (mid-latitude) and 18km (equatorial). A range of delivery systems have at various times been proposed including batch delivery by aircraft, balloons or ballistics and steady-state delivery by thermal plumes, or from a fixed tower or pipe supported by a balloon. The rate required for global climate modification is upward of 1Mte p.a. and at this rate the delivery costs for batch methods are estimated to be well above £1bn p.a. but an order of magnitude less than 1/10 of this for the pipe delivery method.
WP2.0: Before SPICE begins a process to evaluate alternative delivery systems will take place so that WP2 can begin its primary tasks without delay. Delivery systems identified so far include aircraft, weather balloons, ballistics, towers, tethered balloons or dirigibles and tethered jet engine platforms. For each the preliminary investigation will outline engineering, development, capital and operating costs and timescales, environmental and social impact.
Originally posted by Iwinder
Can anyone here claim that the sky is the same deep blue (azure) now as it was back 15 years ago?
I mean this in all honesty, can you actually say it is the same?
Regards, Iwinder
Originally posted by Aloysius the Gaul
Originally posted by Iwinder
Can anyone here claim that the sky is the same deep blue (azure) now as it was back 15 years ago?
I mean this in all honesty, can you actually say it is the same?
Regards, Iwinder
Yep - had a lovely blue sky yesterday - a bit cloudy today, but not a trail of any sort in sight....
Originally posted by Aloysius the Gaul
reply to post by Iwinder
I live in the South Pacific, and like elsewhere there's a variety of weather.
But even in the much afflicted USA yesterday there weer huge areas with little or not cloud - such as here - lance-modis.eosdis.nasa.gov...
Originally posted by tsurfer2000h
reply to post by Aloysius the Gaul
Here you go, today was a beautiful blue sky with a few nice white puffy clouds a little breeze and a great day to be outside. That is how it was yesterday just east of Atlanta,Ga. Very beautiful, Sorry if Iwinder doesn't have the same beautiful weather.
Originally posted by Iwinder
Originally posted by Aloysius the Gaul
reply to post by Iwinder
I live in the South Pacific, and like elsewhere there's a variety of weather.
Where about in the South Pacific to be specific?
It is not like anyone is going to hunt you down so please be more open with us here.
I am located right at the bottom of Lake Huron, and I am not afraid to say so either.
That link you provided was nice and I have no idea how to check our area here, maybe since there is no spraying going on you could provide a link here to the Great Lakes and then we can all have a look.
Originally posted by pianopraze
reply to post by thorfourwinds
We need more people to do what I did... Link their photos with atmospheric conditions to prove these are geoengineering experiments not "normal contrails".
To obtain a better estimate of potential contrail formation, examine the 'Individual level (mb)' results. Select a pressure value between 200 and 250 mb for the best estimate.
Originally posted by pianopraze
The bigger spread out fingers were made directly over my head and drifted east into frame and spread out to the point you see them in 9:06.