Mostrar el registro sencillo del ítem Huamán, Mercedes M. Kelley, Michael C. Hocking, Wayne K. Woodman Pollitt, Ronald Francisco 2018-07-12T20:31:34Z 2018-07-12T20:31:34Z 2001-11
dc.identifier.issn 1944-799X
dc.description En: Radio Science, v. 36, n. 6 (November 2001), p. 1823-1837. es_ES
dc.description.abstract "We present a study of seasonal and diurna! variations of polar mesosphere summer echoes (PMSE), along with temperature and wind data collected during summer 1998 using the 51.5 MHz VHF radar located in Resolute Bay, Canada (75°N, 95°W). The latitudinal dependence of PMSE occurrence and strength are examined by comparing Resolute Bay observations with earlier Poker Flat (65°N, 147°W) observations. Temperatures measurements at Resolute Bay using the radar in the meteor mode are compared with satellite measurements at similar latitudes ofResolute Bay and Poker Flat. The temperature measurements are in good agreement, and, as expected, PMSE is strongly controlled by the seasonal temperature variations. Differences found in the daily composite and monthly average winds, and in the monthly evolution of the amplitudes and phases of the diurna! and semidiurnal tides at Resolute Bay and Poker Flat, are discussed in order to establish the role that they play in the occurrence of PMSE. In general, we find that the diurna! occurrence of PMSE at Resolute Bay also follows the diurna! variation of temperature. The echoes tend to occur more frequently and with greatest intensity when the temperatures are the coldest, in a period centered around local noon. We show that the diurna! wind components at Resolute Bay appear to correlate with the occurrence of PMSE, as also seen at Poker Flat. PMSE at Resolute Bay are not as strong or as frequent as reported at Poker Flat, differing with what we had expected since strongest and more frequent echoes have been observed in the European sector approaching the pole. New observations are needed to establish a possible longitudinal dependence of PMSE occurrence given that the present American sector data are compared with data taken over 10 years ago." es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher American Geophysical Union (AGU) es_ES
dc.rights info:eu-repo/semantics/openAccess es_ES
dc.rights.uri es_ES
dc.source Repositorio institucional - IGP es_ES
dc.subject Variaciones estacionales es_ES
dc.subject Ecos es_ES
dc.subject Mesósfera es_ES
dc.subject Temperatura atmosférica es_ES
dc.subject Vientos termoesféricos es_ES
dc.subject Radar--Mediciones es_ES
dc.subject Alta atmósfera es_ES
dc.subject Ionósfera--Observaciones es_ES
dc.title Polar mesosphere summer echo studies at 51.5 MHz at Resolute Bay, Canada: Comparison with Poker Flat results es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde Radar es_ES
dc.subject.ocde Viento es_ES
dc.subject.ocde Medición es_ES
dc.subject.ocde Observación es_ES
dc.subject.ocde Canada es_ES
dc.subject.ocde Región artica es_ES
dc.identifier.journal Radio Science es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi 10.1029/2000RS001004 es_ES




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