Showing papers in "Journal of Atmospheric and Solar-Terrestrial Physics in 2020"

TL;DR: In this paper, the solar wind at Earth is categorized into four types of plasma emanating from different morphological features on the solar surface and the systematic differences between the four plasma types is assessed.

TL;DR: In this article, continuous observations of PM2.5, NOx and O3 along with mixing layer height (MLH) by ceilometer (Vaisala CL51) in Delhi (Lodi road) during December 2017, January and February 2018 are analyzed.

TL;DR: Based on discussions held at a workshop in Bra-Pollenzo, Italy, this paper, 19 outstanding questions of plasma physics in the Earth's magnetosphere were discussed and discussed.

TL;DR: In this article, the authors investigated the behaviors of the potential earthquake precursors such as Total Electron Content (TEC), daytime/nighttime Land Surface Temperature (LST) and aerosols before and after the 2013 Mw 7.7 Awaran (Pakistan) earthquake.

TL;DR: In this article, the results of radio observations of ionospheric disturbances associated with the fall of a meteoroid (unique in its initial energy of 173kt TNT equivalent) off the east coast of the Kamchatka Peninsula on 18 December 2018 were presented.

TL;DR: In this paper, the authors presented the climatology of the mean winds and diurnal and semidiurnal tides observed by meteor radars at high latitudinal stations Svalbard and Tromso (70°N, 19°E) based on 18 years (2001-2018) and 16 years (2003-2018), respectively.

TL;DR: In this article, a new nowcasting method is proposed to monitor the crucial components of the variability of the stratospheric ozone depletion, which is performed considering the daily measurements of the minimum air temperature in the latitude range 50oN − 90oN, at 50hPa, during the period 1/1/1979-06/04/2020.

TL;DR: In this paper, the authors obtained multiple attractors and periodicity using differential and integral operators with power-law and Mittag-Leffler law for the coupled dynamical El Nino/La Nina-Southern oscillation model and the continuous-time Vallis model for El NINO.

TL;DR: In this article, a multi-year comparison between mid-latitude and equatorial sporadic-E (E s ) height and intensity derived from COSMIC GPS radio occultation (GPS-RO) data and blanketing E frequency (fbEs) from ground-based Digisonde measurements is performed.

TL;DR: In this paper, the authors compare the simulated dust content and extinction coefficients from the GOCART, the Air Force Weather Agency (AFWA) and University of Cologne (UoC) dust emission schemes available in the Weather Research and Forecasting model with Chemistry (WRF-Chem) to assess the model performance during the summer of 2006 over northern Africa.

TL;DR: In this article, the authors assess Urban Heat Island (UHI) as surface urban heat island (SUHI) of Karachi which ensures the existence of UHI effect on sustainability, based on the analysis of rapid urbanization and Land Use Land Cover (LULC) changes on the average temperature warming in Karachi Satellite images are employed to extract statistics regarding land-use in Karachi city and to obtain land surface temperature (LST) maps for the year 2009 and 2017 LULC map is obtained by applying a supervised classification technique to detect the changes in impervious areas Maps of daytime surface

TL;DR: In this article, the results derived from PM2.5 and PM10 concentrations during October 2016-May 2018 using MICROTOPS-II Sunphotometer and high volume samplers at Varanasi were analyzed in order to understand the nature, source of origin and variability with seasons.

TL;DR: In this paper, the authors focus on the greatly improved measurements from the Van Allen Probes relative to the CRRES era and illuminate their understanding of the importance of flux oscillations as a signature of radial transport relative to other energization and loss processes affecting the radiation belts.

TL;DR: In this paper, an Artificial Neural Network (ANN) and time series analysis of Landsat-8 satellite imageries were used to model diurnal Land Surface Temperature (LST) on a local scale of an arid environment by utilizing the ANN and time-series analysis.

TL;DR: In this article, a 3D ray tracing technique is used to estimate the atmospheric phase screen (APS) for land subsidence in Kurdistan province of Iran using Sentinel-1A acquisitions on a single track for the period 2014-2018.

TL;DR: In this article, the carcinogenic risk due to inhalation of PM was calculated through inhalation unit risk, based on the information of chemical species associated with the particles, source apportionment study was performed using positive matrix factorization (PMF) model.

TL;DR: In this article, a superposed epoch analysis on two groups of selected geospace disturbance events, emerging from single and isolated interplanetary drivers, and resulting in either the enhancement or the depletion of the average relativistic electron Phase Space Density (PSD) was performed.

TL;DR: In this article, the long-term natural and anthropogenic aerosol characteristics over the United Arab Emirates (UAE) were investigated using data from the MODIS, local meteorological stations, and the Aerosol Robotic Network (AERONET) ground-based station during 2006-2015.

TL;DR: Wang et al. as mentioned in this paper investigated temporal evolutions of particulate matter (PM) concentrations and its association with the meteorology and aerosol optical depth (AOD) during autumn and winter of 2014-2017 at an urban city, Nanjing in the Yangtze River Delta, East China.

TL;DR: In this article, an active mapping mission is described that unambiguously connects measurements in the Earth's magnetosphere to visible aurora in the atmosphere, where an electron-beam source operated on a spacecraft in the equatorial magnetosphere, with the electron beam traveling along the Earth magnetic-field lines to the atmosphere and depositing its energy to create an optical beam-spot at the footpoint of the spacecraft's magnetic field line.

TL;DR: In this article, the response of the atmosphere to solar irradiance and geomagnetic activity is analyzed in experiments with the Whole Atmosphere Community Climate Model (WACCM) under idealized forcings.

TL;DR: In this paper, the variations in threshold values of various thermodynamic indices during pre-monsoon season at two north-eastern Indian stations: Agartala and Guwahati.

TL;DR: An improved stochastic method for computer simulation of lightning leaders is developed based on the results from optical observation data in this paper, where the development and attachment process of downward negative cloud-to-ground lightning in the near-ground area is simulated.

TL;DR: In this article, the authors investigated the characteristics of pre-earthquake ionospheric effects related to four successive shallow-focus earthquakes (M6.4 on July 28, 2018, M6.8, 5.9, 6.9 on August 05, 09 and 19, 2018) in Indonesia by the China Seismo-Electromagnetic Satellite (CSES).

TL;DR: In this article, the authors investigated the spatial distribution and temporal evolution of medium-energy (tens to hundreds of keV) energetic particle precipitation (both ions and electrons) with NOAA/POES observations.

TL;DR: In this paper, the authors analyzed the magnetic components of the Schumann resonance signals obtained at the Ukrainian Antarctic station “Akademik Vernadsky” (coordinates: 65.25° S, 64.15° N and 16.05° E) from March 2002 to March 2019 and at Svalbard in the Arctic from October 2013 to June 2019.

TL;DR: In this paper, the authors investigated the physics of the cloud system as indicated from the multi-satellite observations, ground-based radar, and model forecast experiments, and concluded that the heavy rainfall was a result of the convective cluster as illustrated through satellite observations and numerical simulations.

TL;DR: In this article, the authors investigated the role of key natural drivers for European temperature variability, namely the Atlantic Multidecadal Oscillation (AMO), the North Atlantic Oscillations (NAO) and solar activity changes, and calculated Pearson correlation coefficients r for AMO, NAO and sunspots compared to monthly temperature data of 39 European countries for the period 1901-2015.

TL;DR: In this article, the authors examined the flash intensity of generated lightning strikes as a function of the salinity of the water into which they were discharged and found that the intensity of lightning increased exponentially with the concentration of dissolved salts in the water.

TL;DR: In this article, the authors presented the climatology of the polar ionospheric density not only in the F-region but also in the E-region and topside ionosphere, in comparison with the mid-latitude ionosphere.