dered to be exotic and not relevant to natural atmospheric physics. Consequently, there has been little research on such processes; and, the results of whatever research that is relevant to SPS are usually archived in out-of-the- main-stream journals. A bibliographical research effort on atmospheric chemistry may benefit not only magnetospheric effects assessment but also assessment for ionospheric and upper atmospheric regions as well. 5. Because of the paucity of physical data and the lack of a definitive compilation of emission rates and characteristics, comprehensive environmental modeling on physically uncertain (or not yet fully understood) issues, such as possible connections between magnetospheric effects and lower atmospheric climate, do not seem to be cost-effective. However, specific physical modeling on principal issues are absolutely essential for final assessment. 6. The possible accumulation of POTV neutral exhaust in a gravitationally trapped neutral belt has enormous significance in its effects on reduction of auroral activity and on the enhancement of the geocorona. Study of this issue requires data on the frequency of POTV flights and on the loss mechanism of such gravitationally trapped neutral belts. Although data on these issues are not definitive, we recommend immediate study on this very important issue. 7. We realize that it is not sufficient to study exclusively the mag- netospheric effects without considering possible methods of mitigation. Indeed, even the integration of various impacts into a totality of SPS effects has not yet been done. Therefore, we recommend initiation of such studies. 81
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