HR: 10:45h
AN: SA52A-02 INVITED     [Abstracts]
TI: Trends in Ionospheric Data: Techniques and Results
AU: * Weatherhead, E
EM: betsy.weatherhead@cires.colorado.edu
AF: U. Colorado, CIRES, 325 Broadway, Boulder, CO 80305 United States
AU: Araujo, E
EM: eduardo.araujo@noaa.gov
AF: U. Colorado, CIRES, 325 Broadway, Boulder, CO 80305 United States
AU: Akmaev, R
EM: rashid.akmaev@noaa.gov
AF: U. Colorado, CIRES, 325 Broadway, Boulder, CO 80305 United States
AU: Noonan, G
EM: greg.noonan@noaa.gov
AF: U. Colorado, CIRES, 325 Broadway, Boulder, CO 80305 United States
AU: Fuller-Rowell, T
EM: tim.fuller-rowell@noaa.gov
AF: U. Colorado, CIRES, 325 Broadway, Boulder, CO 80305 United States
AU: Viereck, R
EM: rodney.viereck!@noaa.gov
AF: NOAA, 325 Broadway, Boulder, CO 80305 United States
AB: Increases in greenhouse gases are expected to affect the entire atmosphere including the ionosphere. Long-term, hiqh quality data from the ionosonde network are examined to determine if trends are detectable. Techniques used to screen the data for problems will be briefly reviewed. The statistical techniques employed to look for trends were developed to take into account the non-linear nature of ionospheric response to solar forcings. These techniques will be summarized. Trend results from at least four international locations show that the trends vary by season, time of day and location. These results will be presented and the largest sources of uncertainties will be outlined.
DE: 1600 GLOBAL CHANGE (New category)
DE: 1650 Solar variability
DE: 2400 IONOSPHERE
DE: 7536 Solar activity cycle (2162)
DE: 7537 Solar and stellar variability
SC: SPA-Aeronomy [SA]
MN: 2005 Joint Assembly