If an Intentional Covert Atmospheric Aerosol Injection Program (ICAAIP) exists the following are part of the assumptions . . .
1) The only rational motive for a world wide program is to mitigate global warming . . . all other missions would IMO be local or regional in scope . . .
2) Based on the research available to the public . . . the injection into the stratosphere and/or high troposphere of reflective aerosols is the only logical method to mitigate global warming . . .
3) The most talked about and researched substance proposed for injection are sulfur compounds . . . using volcanic mediated climatic cooling as a model . . .
4) Multiple proposals to inject sulfur compounds have been computer modeled and cost analysis accomplished . . .
5) Most proposals recommend aircraft delivery as the most expedient, effective and efficient . . .
6) If my assumptions are correct . . . the questions remain . . . did someone begin ICAAIP . . . when did they start injections. . . are the injections ongoing and continual in pattern (altitude, routes, timing,amount, frequency, and concentration)?
7) What potential evidence would be expected to be discovered that proves a program was initiated and/or is still ongoing . . . ??
8) Potential Evidence:
a. If the objective was to demonstrate capability . . . no residual evidence may exist, except for testimony from the people involved.
b. If full implementation was attempted but was found ineffective and abandoned . . . a spike of sulfur compounds might be found in environmental reservoirs such as Ice Cores, Tree Rings, biomass (but how to fingerprint the sulfur by source?), stratospheric measurements and related recorded environmental data and of course testimony of individuals involved . . . plus logistical tails such as sulfur supplies, transportation, aircraft modification, etc.
c. If the program is still ongoing same as in (b) above . . . plus if effective some modification (even if minor) of the expected rate or magnitude of global warming . . .
9) The question remains is there any evidence available other than historical motive, capability, and research . . .?
Answer: So far no definitive evidence exists from (8) above . . . except for minor variations in stratospheric particulate concentration and a suspected rate reduction in global warming in the 2000s . . . the question remains IMO is this variation totally understood and accounted for by source (to include known anthropomorphic sources) or is there a component of geoengineering . . .
Question: if there is a geoengineering component how does one prove it????
Answer: Since fingerprinting of stratospheric sulfur compounds is unlikely . . . and the one tool that may have accomplished this action was destroyed on launch in 2011 and not likely to be relaunched until 2015 . . . Thus, we may not know for several years to come . . .
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(The Glory Aerosol Polarimetry Sensor)-the one instrument that could have answered many of the needed answers about aerosols possible origins and climatic effects was a Raytheon project . . . and . . . was lost by a failed launch . . .
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External Quote:
Raytheon's Aerosol Polarimetry Sensor
Raytheon's Aerosol Polarimetry Sensor (APS) will measure aerosols in Earth's atmosphere to provide scientists and policy makers a better understanding of how those aerosols affect global climate change.
"The Glory Aerosol Polarimetry Sensor can distinguish between various types of aerosols and reveal the different role each plays in either warming or cooling our planet," said Bill Hart, vice president, Space Systems. "Since black carbon aerosols generally contribute to warming, and sulfate aerosols to cooling, the concentrations of these aerosols and others must be determined to ensure accurate climate modeling."
Both natural and man-made aerosols are important constituents of the atmosphere that affect global temperature. Yet they remain poorly quantified and, according to NASA scientists, represent the largest uncertainty regarding climate change.
http://www.raytheon.com/capabilities/products/gloryaps/
On 4 March 2011, the Aerosol Polarimetry Sensor (APS) was lost as a consequence of the failed launch of the Glory Mission. On 6 March 2011, Dr. Michael Freilich, Director of the Earth Science Division, Science Mission Directorate, NASA Headquarters, directed the Glory APS Science Team to perform a comprehensive study intended to develop and evaluate the science rationale for an APS reflight.
http://glory.giss.nasa.gov/