DOE Environmantal Assessment Vol2 Detailed

STRATOSPHERIC AND MESOSPHERIC EFFECTS (Cont’d) 6. Evaluate (1-D Model) effects of temperature feedback on high altitude composition changes, including effects of injections of C02, of fuel impurities such as sulfur, and of ablation material produced on reentry. Medium FY 80 7. Estimate (2-D and 3~D models) extent of "corridor effect” for various H2O and N0x injection rates. High FY 80 8. Evaluate importance of "corridor effect" and temperature feedback effects for climatic impacts, specifically changes in atmospheric dynamics and surface temperatures, for projected levels of spaceflight activity. Medium FY 80 9. Establish maximum acceptable H2O and N0x injection rates from point of view of climatic impacts. Medium FY 80 10. Estimate potential increase in noctilucent and nacreous cloud formation due to H2O injections. High FY 80 11. Estimate extent of climatic effects arising from increase in noctilucent and nacreous cloud formation, taking potential corridor into account. High FY 80 12. Estimate effects due to localized energy injection due to rocket exhaust thermal energy and to microwave absorption. Low FY 79 13. Support suitable extension and/or augmentation of planned measurement program to provide calibration data for NIMBUS-G satellite H2O and NOX measurements. High FY 80 a. Additional high altitude H2O and N0x measurements. b. Extended and/or more timely data analysis and reduct ion. 14. Augment ongoing NASA and FAA sponsored programs for CO2 measurements above 35 km, to allow more accurate estimates of temperature profile in upper stratosphere and mesosphere. High FY 80

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