Midlatitude nighttime D region ionosphere variability on hourly to monthly time scales
نویسندگان
چکیده
منابع مشابه
Midlatitude nighttime D region ionosphere variability on hourly to monthly time scales
[1] Significant temporal variability of the nighttime D region is well known, but its inaccessibility means that the time scales, magnitudes, and sources for that variability are not well understood. We probed the ionospheric D region by measuring the high‐power broadband very low frequency (VLF) signals launched by lightning and propagating in the Earth‐ionosphere waveguide. We analyzed broadb...
متن کاملMidlatitude daytime D region ionosphere variations measured from radio atmospherics
[1] We measured the midlatitude daytime ionospheric D region electron density profile height variations in July and August 2005 near Duke University by using radio atmospherics (or sferics for short), which are the high‐power, broadband very low frequency (VLF) signals launched by lightning discharges. As expected, the measured daytime D region electron density profile heights showed temporal v...
متن کاملabove and within a temperate broad-leaved forest canopy on hourly to seasonal time scales
Fluxes and concentrations of carbon dioxide and 13 CO 2 provide information about ecosystem physiological processes and their response to environmental variation. The biophysical model, CANOAK, was adapted to compute concentration profiles and fluxes of 13 CO 2 within and above a temperate deciduous forest (Walker Branch Watershed, Tennessee, USA). Modifications to the model are described and t...
متن کاملTemperature Responses to Spectral Solar Variability on Decadal Time Scales
[1] Two scenarios of spectral solar forcing, namely Spectral Irradiance Monitor (SIM)‐based out‐of‐phase variations and conventional in‐phase variations, are input to a time‐dependent radiative‐convective model (RCM), and to the GISS modelE. Both scenarios and models give maximum temperature responses in the upper stratosphere, decreasing to the surface. Upper stratospheric peak‐to‐ peak respon...
متن کاملMeteor Induced Ridge and Trough Formation and the Structuring of the Nighttime E-Region Ionosphere
When meteor-generated plasma trails diffuse into the ionosphere they create large ambipolar electric fields mainly perpendicular to the Earth’s geomagnetic field (B) and extending many kilometers from the trail along B. These fields will cause ionospheric plasma to collect into ridges extending from the trail along B, enhancing the density by as much as a factor of 2, and they will also remove ...
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: Journal of Geophysical Research: Space Physics
سال: 2010
ISSN: 0148-0227
DOI: 10.1029/2010ja015437