Could negative ion production explain the polar mesosphere winter echo (PMWE) modulation in active HF heating experiments?
نویسندگان
چکیده
منابع مشابه
Polar mesosphere winter echoes
The thermal and dynamical state of the atmosphere during polar mesosphere winter echoes F.-J. Lübken, B. Strelnikov, M. Rapp, W. Singer, R. Latteck, A. Brattli, U.-P. Hoppe, and M. Friedrich Leibniz Institute of Atmospheric Physics, Kühlungsborn, Germany Norwegian Defence Research Establishment (FFI), Kjeller, Norway Institute of Communications Networks and Satellite Communications, Graz Univer...
متن کاملDiagnosing radio plasma heating in the polar summer mesosphere using cross modulation: Theory and observations
[1] Radio heating of the free electrons in the mesosphere is an important diagnostic technique for the phenomenon of polar mesosphere summer echoes (PMSE). Due to a lack of suitable observations, the heating must be modeled when studying its effect on PMSE. In order to try to validate these models, the cross‐modulation technique was implemented at the EISCAT facility near Tromsø, Norway to comp...
متن کاملRocket measurements of positive ions during polar mesosphere winter echo conditions
On 18 January 2005, two small, instrumented rockets were launched from Andøya Rocket Range (69.3◦ N, 16◦ E) during conditions with Polar Mesosphere Winter Echoes (PMWE). Each of the rockets was equipped with a Positive Ion Probe (PIP) and a Faraday rotation/differential absorption experiment, and was launched as part of a salvo of meteorological rockets measuring temperature and wind using fall...
متن کاملPolar Mesosphere Winter Echoes during Solar Proton Events
Thin layers of enhanced radar echoes in the winter mesosphere have been observed by the ESRAD 52 MHz MST radar (67° 53 ‘ N, 21 ° 06 ‘ E) during several recent solar proton events. These polar mesosphere winter echoes (PMWE) can occur at any time of day or night above 70 km altitude, whereas below this height they are seen only during daytime. An energy deposition / ion-chemical model is used to...
متن کاملRemote sensing of mesospheric dust layers using active modulation of PMWE by high-power radiowaves
This paper presents the first study of the modulation of polar mesospheric winter echoes (PMWE) by artificial radiowave heating using computational modeling and experimental observation in different radar frequency bands. The temporal behavior of PMWE response to HF pump heating can be employed to diagnose the charged dust layer associated with Mesospheric Smoke Paricles (MSP). Specifically, th...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2008
ISSN: 0094-8276
DOI: 10.1029/2008gl035798