Day‐to‐day variability of midlatitude ionospheric currents due to magnetospheric and lower atmospheric forcing

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Relativistic Magnetospheric Electrons: Lower Ionospheric Conductivity and Long-term Atmospheric Variability

Long-term (1979-88) observations of relativistic electrons in the earth's outer magnetosphere show a strong solar cycle dependence with a prominent intensity maximum during the approach to solar minimum (1983-85). This population therefore closely corresponds to the presence of high-speed solar wind streams emanating from solar coronal holes. Using a numerical code, we have calculated the preci...

متن کامل

Atmospheric low frequency variability and itsrelationship to midlatitude SST variability : studiesusing the NCAR Climate System

The characteristics of atmospheric low-frequency variability and midlatitude SST variability as simulated by the NCAR Climate System Model are analyzed in the vicinity of the North Paciic and North Atlantic basins. The simulated spatial patterns of variability correspond quite well to those seen in observational datasets, although there are some diierences in the amplitudes of variability. Comp...

متن کامل

New nonlinear mechanisms of midlatitude atmospheric low-frequency variability

This paper studies the dynamical mechanisms potentially involved in the socalled atmospheric low-frequency variability, occurring at midlatitudes in the Northern Hemisphere. This phenomenon is characterised by recurrent nonpropagating and temporally persistent flow patterns, with typical spatial and temporal scales of 6000-10000 km and 10-50 days, respectively. We study a low-order model derive...

متن کامل

Influences of various magnetospheric and ionospheric current systems on 1 geomagnetically induced currents around the world

14 Ground-based observations of geomagnetic field (B-field) are usually a superposition of 15 signatures from different source current systems in the magnetosphere and ionosphere. 16 Fluctuating B-fields generate geoelectric fields (E-fields), which drive geomagnetically induced 17 currents (GIC) in technological conducting media at Earth’s surface. We introduce a new Fourier 18 integral B-fiel...

متن کامل

Effects of seasonal changes in the ionospheric conductances on magnetospheric fieldaligned currents

[1] Through the seasons of the year, the ionospheric potential doesn’t change significantly, while the solar driven conductance changes dramatically. This means that the magnetospherically driven field-aligned currents must be significantly reduced in the winter hemisphere and enhanced in the summer hemisphere. It is shown that, if this simplistic view of the conductance is used, the ratio betw...

متن کامل

ذخیره 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: 2016

ISSN: 2169-9380,2169-9402

DOI: 10.1002/2016ja022817