Showing papers in "Journal of Atmospheric and Solar-Terrestrial Physics in 2023"

TL;DR: In this article , the potential responses of Rn and TEC to earthquakes along the North Anatolian Fault (NAF) from 2007 to 2009 were examined using statistical and machine/deep learning methods, such as ARIMA, LSTMs, ANNs, SVMs and STUMPY.

TL;DR: In this paper , a review on the solar-terrestrial system and extant scientific literature is presented, which illuminate processes related to the genesis of solar magnetic fields in the Sun's interior, their emergence and evolution, their manifestation as solar eruptive events, and their eventual impact on the geospace environment mediated via solar winds and storms.

TL;DR: In this paper , a full-chain scheme for assessment of spectra and anisotropy and the related terrestrial effects of strong solar energetic particles (SEPs) causing SEPs is presented.

TL;DR: In this article , a new polarized radiative transfer model is proposed to compute the polarization measured by a virtual instrument in a given nocturnal environment recreating real world conditions. But the model has potential applications in the context of light pollution, or aerosols and air pollution measurements in night time conditions.

TL;DR: In this paper , the authors compared the Umov-Poynting vector (UPV) in the Schumann resonance (SR) band during the eruption of Tonga volcano on Jan. 15, 2022.

TL;DR: In this article , the authors used feed-forward neural network (FNN) and Elman neural network(ENN) approaches to estimate the long-term air temperature in Türkiye.

TL;DR: In this article , the variations of the solar-wind parameters (solar wind velocity, plasma density, and IMF-Bz component) and the Earth's disturbance storm-time index (Dst) in relation to cosmic ray flux measurements from 8 neutron monitor stations distributed over Canada, Russia, Finland, and Greenland, during three intense geomagnetic storms occurred during the 24th solar cycle (March 16-18 2015, June 21-23 2015, and September 7-9, 2017).

TL;DR: In this paper , the authors investigated the long-term variations of temperature, CO2 concentration and associated cooling rates in the middle and upper atmosphere (30-110 km) using Sounding of Atmosphere by Broadband Emission Radiometry (SABER) on board Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics (TIMED) satellite observations during 2002-2021 and Specified Dynamics-Whole Atmosphere Community Climate Model (SD-WACCM) simulations during 2002−2017 over 50 N−50 S latitudes.

TL;DR: In this paper , four experiments were performed to explore the response of a convection over Poyang Lake (PL) in China on 12-13 August 2015 to the time and space variations of LST based on the Weather Research and Forecasting (WRF) model.

TL;DR: In this paper , the authors considered the boundary layer (BL) within the earthquake preparation zone as an open non-equilibrium system with energy dissipation and used atmosphere chemical potential (ACP) as a parameter to estimate energy for processes connected with condensation.

TL;DR: In this paper , the authors measured the total winter flux of EPP-IE NO descending through three isentropic levels in the mesosphere, that is 2600 K, 3300 K and 4000 K, based on 15 years of NO nighttime observations from the Sub-Millimetre Radiometer (SMR) on board Odin satellite.

TL;DR: In this paper , a photometric technique to obtain daytime optical airglow emissions is described, where a low-resolution Fabry-Perot etalon is used as a high spectral resolution filter to obtain the dayglow signal.

TL;DR: In this article , the anomalies in soil radon and thoron time series data (TSD) have been reported in many studies prior to earthquakes, suggesting both radioisotopes may serve as earthquake precursors.

TL;DR: In this article , the dependence of the solar energetic particle event (SEP) properties, viz. proton fluence and proton peak flux, in the two proton energy values, ∼25 MeV/n and ∼68 MeV /n, on the solar flare (SF) parameters were examined for three western longitudinal areas, W0-W39, W40-W70 and W71-W90.

TL;DR: In this article , the Tsyganenko magnetospheric magnetic field model was used to calculate the cosmic ray (CR) geomagnetic cutoff threshold rigidities for the 2017 Sep 6-9 geOMagnetic disturbance and compared those values with the calculation results obtained from ground-based observations at the global network of neutron monitors (GNNM).

TL;DR: A rare episode of minor circulation embedded in the Hadley circulation and processes responsible for its formation is discussed in this paper , where a longitudinally resolved vertical velocity observations centered on 35°N latitudinal belt revealed that there is an anomalous upwelling over the North American sector possibly associated with the Great Floods of 1993.

TL;DR: In this paper , a robust Cascade Forward Neural Network (CFNN) framework was proposed to predict the transit times of Earth-directed halo CMEs using a total of 290 CME/Interplanetary coronal mass ejections (ICME) pairs of datasets for the past two and half decades (solar cycle; SC 23, 24, 25).

TL;DR: The GRAPES-3 muon telescope in Ooty, India detected a 2-h burst of cosmic ray muons (Eμ ⩾ 1 GeV) on 22 June 2015 upon the arrival of a strong coronal mass ejection which triggered a G4 class geomagnetic storm as discussed by the authors .

TL;DR: In this article , the ozone and climate response to the solar irradiance changes caused by the switch of the Sun to higher activity mode is analyzed, which is characterized by the simultaneous decrease of the total and increase of the UV solar irradiances.

TL;DR: In this paper , the authors reconsidered the historical and modern discoveries of this tidal oscillation in the atmosphere and provided an analysis of possible influence of other lunar tidal oscillations on the extracted tropical-monthly oscillation was not provided.

TL;DR: In this paper , low-cost infrared thermometers were used to infer precipitable water (variable commonly used to characterize atmospheric water vapor) through regression analyses considering two exponential fits, and these results are similar (or even better) to those obtained with satellite data.

TL;DR: In this paper , the authors examined whether these phenomena were linked on a 2 to 9-day timescale, utilizing wavelet coherence analysis of both fire and lightning data, and concluded that anthropogenic fires may affect lightning activity through aerosol-cloud particle interactions.

TL;DR: In this paper , a 2D median filter was proposed to reduce disturbed-weather Atmospheric Electric Field (PG) noises rather than choosing fair-weather PG using conventional approaches, and the results show that compared to other simple filters, it has significant effect on reducing disturbed weather PG noises, at the same time, has little effect on the fair weather PG signals.

TL;DR: In this paper , a new model to predict the electron density and effective recombination coefficient of the lower ionosphere under solar X-ray conditions is presented, which relies on space-borne solar irradiance measurements in coincidence with ground recorded active transmissions of Very Low Frequency (VLF), (<30 kHz) signals.

TL;DR: In this article , the spectral direct normal irradiance (DNI) of the surface spectral irradiance, with a spectral resolution of 1 nm in the range of 280-1600 nm, and 5 nm in range of 1600-3000 nm, has been calculated with the Geant4 Monte Carlo simulation toolkit using the US Standard Atmosphere 1976 model and the reference extraterrestrial solar spectrum SOLAR-ISS.

TL;DR: In this paper , the authors used batch normalization and neural network (BNN) to retrieve temperature and water vapour density (WVD) profiles from Tb values during clear sky conditions and validation of the retrieval accuracies.

TL;DR: In this article , the influence of the weather elements on the Cloud Condensation Nuclei (CCN) size distribution was analyzed using the HYSPLIT model of the National Oceanic and Atmospheric Administration.

TL;DR: In this paper , a three-year study of diurnal and seasonal characteristics of nighttime spread F over eight Digisonde European stations covering an extended latitude and longitude range of the European mid-latitude ionosphere is presented.