Khushboo Lucknow, 300 Questions 0 Answers 0 Best Answers 343 Points View Profile Khushboo Asked: October 28, 20212021-10-28T14:13:27+05:30 2021-10-28T14:13:27+05:30In: GENERAL What is the ionosphere? Artificial Neural Networks based global Ionospheric Model. current affairesscience & technology Share Facebook 1 Answer Recent 0 Questions 307 Answers 60 Best Answers 0 Points View Profile [Deleted User] 2021-10-28T14:25:52+05:30Added an answer on October 28, 2021 at 2:25 pm Artificial Neural Networks based global Ionospheric Model Context: Researchers from the Indian Institute of Geomagnetism (IIG), Navi Mumbai, under the Department of Science & Technology have developed a global model to predict the ionospheric electron density with larger data coverage. About: The new Artificial Neural Networks based global Ionospheric Model (ANNIM) is developed using long-term ionospheric observations to predict the ionospheric electron density and the peak parameters. ANNs replicate the processes in the human brain (or biological neurons) to solve problems such as: pattern recognition classification clustering generalization linear and nonlinear data fitting time-series prediction Currently, very few attempts have been made to model the global ionosphere variability using ANNs. How do they do it? The researchers developed a neural network-based global ionospheric model by using: an extensive database of global Digisonde (an instrument that measures real-time on-site electron density of the ionosphere by sending the radiofrequency pulses) Global Navigation Satellite System (GNSS) radio occultation topside sounders observations These datasets were processed with various quality control measures to eliminate spurious data points (outliers) and prepared for the training. Day number, Universal Time, latitude, longitude, F10.7 index (responsible for Photo-ionization), Kp (represents the disturbed space weather conditions), magnetic declination, inclination, dip latitude, zonal and meridional neutral winds were taken as inputs in the study. The target (output) of ANNs is the electron density as a function of altitude for any given location and time. The data was trained with the ANNs using a high-performance computer at IIG to develop the ANNIM. What is the ionosphere? A dense layer of molecules and electrically charged particles, called the ionosphere, at about 35 miles (60 kilometers) above the planet’s surface and stretching out beyond 620 miles (1,000 km). The ionosphere overlaps the mesosphere, thermosphere, and exosphere. It is a very active part of the atmosphere, and it grows and shrinks depending on the energy it absorbs from the sun. In the ionosphere, charged particles are affected by the magnetic fields of both Earth and the sun. This is where auroras happen. Those are the bright, beautiful bands of light that you sometimes see near Earth’s poles. They are caused by high-energy particles from the sun interacting with the atoms in this layer of our atmosphere. 0 Reply Share Share Share on Facebook Share on Twitter Share on WhatsApp Leave an answerCancel replyYou must login or register to add a new answer. Related Questions Tell us about different types of Orbits. What are salt secreting Mangroves?
Artificial Neural Networks based global Ionospheric Model
Researchers from the Indian Institute of Geomagnetism (IIG), Navi Mumbai, under the Department of Science & Technology have developed a global model to predict the ionospheric electron density with larger data coverage.
How do they do it?
What is the ionosphere?