Poster's note : relevant to cirrus stripping http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=7486319&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D7486319
Method for analysis of Ice Super Saturated Regions (ISSR) in the U.S. airspace Denis Avila ; Center for Air Transportation Systems Research (CATSR) at George Mason University, Fairfax, Virginia, United States ; Lance Sherry Abstract Contrails form when hot humid exhaust from jet engines mixes with a cold low pressure atmosphere creating long thin artificial clouds that are left behind by aircrafts. These high and thin cirrus clouds are highly transparent to shortwave radiation, and under certain azimuth angles, present a small Albedo Force allowing most of the incoming energy to reach the surface of the Earth. They do however absorb the outgoing longwave radiation, a portion of which is sent back to the Earth's surface, adding to the shortwave energy. The added energy causes the overall effect of the high thin cirrus clouds to enhance atmospheric greenhouse warming. Researchers estimate that contrails provide 7% of the Earth's cloud cover and may have a greater impact than CO2 emissions. Adjusting flight trajectories could have an impact on greenhouse warming. Previous research mitigating the effects of contrails used only one month of data. The paper describes the analysis of one year of high fidelity National Oceanic and Atmospheric Administration (NOAA) Rapid Refresh (RAP) data for the presence of Ice Super Saturated Regions (ISSRs). The highest frequency of ISSR was found during the months from June to September at Flight Levels between 300 and 350 where the maximum ISSR % Volume reached 30% of the US airspace. The ISSRs move constantly, however the largest regions identified were situated over the southern and eastern US air space. Published in:2016 Integrated Communications Navigation and Surveillance (ICNS)Date of Conference:19-21 April 2016 -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout.
