Lower-Thermospheric Winds and Temperatures at High Latitudes
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The region of the atmosphere known as the lower thermosphere               (80 to 130 km in altitude) is more difficult to study than the                  regions at higher altitudes accessible to satellites and regions                at lower altitudes accessible to balloons and aircraft.  The high               altitude energy inputs of the solar wind and solar ultraviolet                  propagate downward through it, and the lower altitude tidal and                 gravity wave energy inputs propagate upward through it, both                    depositing some of their energy on the way.  To understand the                  coupling between the upper and lower atmosphere we must                         understand the structure and dynamics of the lower thermosphere                 and how it affects the energy propagating through it.  High                     latitude studies are especially important in view of auroral                    energy sources.  Two incoherent scatter radars in Alaska and                    Sweden have made extensive measurements over the last solar cycle               that can be analyzed to yield the temperatures and winds and                    their variation with season, magnetic activity and solar cycle.
{'FirstName': 'Roberta', 'LastName': 'Johnson', 'PI_MID_INIT': None, 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Roberta Johnson', 'EmailAddress': 'rmjohnsn@gmail.com', 'NSF_ID': '000464813', 'StartDate': '08/15/1988', 'EndDate': None, 'RoleCode': 'Principal Investigator'}
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