Showing papers in "Journal of Atmospheric and Solar-Terrestrial Physics in 2022"

TL;DR: In this paper , the effect of the E-region electron density on the propagation of high frequency (HF) radio propagation has been investigated for a layer that was detected over Eureka on July 11, 2012.

TL;DR: In this article , the authors present results of concurrent observations of anomalous Schumann resonance (SR) signals during the major phase of eruption of Tonga volcano on 15 January 2022.

TL;DR: In this paper , the authors investigated the potential reasons for the long-term trend in the diurnal temperature range (DTR) by studying the response of the DTR to total cloud cover (TCC) and rainfall on a seasonal basis.

TL;DR: In this article , the mean level of correlation between the E KL field and PC index remains in range R = 0.85-0.90 over 24 years, the decrease being related to solar protons events, which strongly affect the ionospheric conductivity in polar caps.

TL;DR: In this article, the authors studied variations in ionosphere associated to two large magnitude EQs (Mw≥ 6.5) and low epicentral depth EQs of less than 12 kilometers in Plasma Density (PD), Slant Total Electron Content (STEC) and Electron Temperature (ET) of European Space Agency's (ESA) Swarm-three satellites (Swarm-A, -B, and -C).

TL;DR: In this paper , the authors studied variations in ionosphere associated to two large magnitude EQs (Mw ≥ 6.5) and low epicentral depth EQs of less than 12 km in Plasma Density (PD), Slant Total Electron Content (STEC) and Electron Temperature (ET) of European Space Agency's (ESA) Swarm-three satellites (Swarm-A, -B, and -C).

TL;DR: In this paper, the authors investigated the complexity of radon time series (RTS) recorded from March 2017 to April 2018 in Pakistan via RTM 1688-2 monitor, in direct linkage to parallel series of temperature, relative humidity, and pressure.

TL;DR: In this article , an inversion approach based on singular value decomposition (SVD) was proposed to estimate the location and intensity of global lightning activity from Schumann resonance (SR) measurements.

TL;DR: In this article, GPS IWV is derived from 18 GNSS-based GPS locations in India at hourly intervals for a period of one year and analyzed for diurnal, seasonal, and spatial variability.

TL;DR: In this paper , the authors investigated the complexity of radon time series (RTS) recorded from March 2017 to April 2018 in Pakistan via RTM 1688-2 monitor, in direct linkage to parallel series of temperature, relative humidity, and pressure.

TL;DR: In this paper , GPS IWV is derived from 18 GNSS-based GPS locations in India at hourly intervals for a period of one year and analyzed for diurnal, seasonal, and spatial variability.

TL;DR: In this paper , a method is proposed for estimating radon space-time transport from soil to air, which is achieved by solving the radon transport equation in soil with special boundary conditions.

TL;DR: A review of physics-based solar cycle prediction models can be found in this paper , where the authors compare seven physicsbased prediction models from four aspects, which are what the predictor is, how to get the predictor and how to use the predictor, and what to predict.

TL;DR: In this article , long-term radiosonde observations have been used to detect cloud layers and the liquid water path (LWP) is retrieved, which can be used in various investigations in the absence of any direct observations.

TL;DR: In this article , the authors explored the source and transport pathways of severe dust storm events over the Arabian Peninsula over nine years (2010-2018) using MODIS Aqua and Terra satellites (0.25-0.5 km/pxl resolution) combined with the HYSPLIT model and synoptic meteorology.

TL;DR: In this article , the authors performed an atmospheric analysis of 7 severe dust storms in the Sistan and the Hamoun Lake Basin region during the past two decades and found that the high-pressure systems over the Caspian Sea and surrounding areas and low-pressure system over the Indian subcontinent and around areas interactions result in northerly, westerly, and northwesterly winds over Sistan region, and caused the dust events in this area and transport of dust plumes to east and southeast area.

TL;DR: In this paper , the authors evaluated high-resolution (1 km) forecasts during the Cloud Aerosol Interaction and Precipitation Enhancement Experiment (CAIPEEX) for verification purposes.

TL;DR: In this paper , the first estimation of cloud to ground (CG) lightning activity over the Indian subcontinent is reported, which is based on the analysis of ground-based data of worldwide lightning location network (WWLLN).

TL;DR: In this article , a new troposphere model has been presented, which considers annual, semi annual and diurnal effects in both sine and cosine form unlike its ancestors, and the data of ERA5 and terrestrial meteorological stations have been used.

TL;DR: In this article , the authors investigated the spatial variation of thermodynamic indices for 1987-2016 over two tropical north-eastern states of India (Assam and Tripura) using the ERA-5 reanalysis data with 0.25° × 0.75° (31 km) resolution.

TL;DR: In this article , Fourier and wavelet transform were performed on the rainfall and sunspot number time series to determine dominant periods and the relationship between sunspot numbers and rainfall over Kerala during varying levels of solar activity was examined using wavelet coherence.

TL;DR: In this paper , the authors compared different CNN architectures and different layering in order to test the best neural network model for mesoscale aurora classification, and achieved the highest F1 score of the test set reaches 99.6% (ResNet-50).

TL;DR: In this paper , the authors examined ionospheric total electron content (TEC) perturbations from six International Global Navigation Satellite System stations (GNSS) including GUAT-Guatemala, SSIA-El Salvador, INEG-Mexico, MANA-Nicaragua, MDO1-United States of America, and BOGT- Colombia for several days around the occurrence of a major earthquake (M 7.4 and depth 20.0 km) in Mexico, June 23, 2020 at 10:29 Local Time (LT).

TL;DR: In this paper , a data-based optimization of a simple absorption model is performed incorporating solar X-ray flux data and 30 MHz riometer data from stations distributed across Canada.

TL;DR: In this paper , the authors analyzed the JJI VLF (22.2 kHz) transmitter signal received at two low-latitude stations, one in Port Vila (geogrga coord., 17.73°S, 168.33°E), Vanuatu and other in Suva (18.14°S and 178.44°E, Fiji, was analyzed for any VlF changes due to 16 Earthquakes (EQs) with magnitudes 5.5 to 7.7, during 2018 (JJI-Vanuatu path, 6.8 Mm) and 2007 to 2018 ( JJI-Suva path, 7.5 Mm).

TL;DR: In this article , the unusual pre-sunrise Equatorial Plasma Bubbles (EPBs) during a moderate geomagnetic storm recovery phase caused by the High-Speed Solar Wind Stream (HSS) over the Brazilian sector were observed.

TL;DR: In this article , the effects of single-moment WSM6/7 and doublemoment microphysics schemes on the extreme precipitation were investigated using the WRF model.

TL;DR: In this paper , the vertical total electron content (VTEC) of GPS and Swarm LEO satellites was obtained by employing the modified single-layer mapping function (MSLM) on the slant total ion content (STEC) and then the VTECs derived from three techniques were represented by the Spherical Harmonics (SH) expansion function up to the degree and order 15 in a solar-geomagnetic frame.

TL;DR: In this paper , the Haar wavelet decomposition technique is used to detect the planetary magnetosphere boundaries and discontinuities using the magnetometer data from the CASSINI and MESSENGER spacecraft.

TL;DR: In this article, the authors analyzed the electric field parameters of negative cloud-to-ground (CG) lightning flashes in the Bogota savanna (a large plateau located in central Colombia), and its comparison with other regions.