Showing papers in "Journal of Atmospheric and Solar-Terrestrial Physics in 2013"

TL;DR: IWAF as mentioned in this paper is a computer software package designed to assess and predict the world-wide representation of 3-D electron density profiles from the Global Ionospheric Maps of Total Electron Content (GIM-TEC).

TL;DR: In this paper, the effects of amplitude modulation on nonlinear interactions between a parallel propagating whistler wave and electrons in a dipole field are investigated using a test particle code.

TL;DR: In this paper, the authors studied the time variability of black carbon (BC) aerosols over different timescales (daily, weekly and annual) over a tropical urban location Hyderabad in India using seven channel portable Aethalometer.

TL;DR: In this article, the authors present empirical evidence for a direct relationship between total solar irradiance (TSI) and the Equator-to-Pole (Arctic) surface temperature gradient (EPTG).

TL;DR: The Cloud Imaging and Particle Size (CIPS) instrument has been in operation on the NASA Aeronomy of Ice in the Mesosphere (AIM) satellite since May 2007 as discussed by the authors.

TL;DR: In this article, the authors developed a general model to estimate daily global solar radiation (Rs) from routinely measured temperature data and site geographical parameters (latitude (La, °N), longitude (Ld, °E) and altitude (Alt, m)) for Guizhou and Sichuan basin of southwest China.

TL;DR: In this article, a time series of rainfall, thunderstorms, temperatures, winds and aerosols of 50 years have been analyzed at the Xian valley (1951-2005, rain rates data are only available for the period of 1961-2000 for Xian) and the nearby Mount Hua ( 1951-2005) in central China, for assessing the impact of the increasing air pollution on convective precipitation.

TL;DR: In this article, preliminary breakdown pulses (PBP) of 26 positive and 104 negative cloud-to-ground (CG) lightning flashes observed in winter thunderstorms in Hokuriku region of Japan are analyzed.

TL;DR: In this article, a comprehensive study has been made on the morphology of the equatorial ionization anomaly (EIA), focusing on the EIA's magnitude, inter-hemispheric asymmetry by resolving their seasonal and local time variations at different altitudes and solar activity levels.

TL;DR: The ground-based infrared P-branch spectrometer (GRIPS 6) as mentioned in this paper was developed and is now in operation at the German Remote Sensing Data Center (DFD) of the German Aerospace Center (DLR) in Oberpfaffenhofen, Germany.

TL;DR: In this paper, the influence of geocoronal neutrals on ring current decay was assessed using TWINS ENA images and compared with the predicted ENA emission using five different geocORonal models and the HEIDI ring current model to simulate the July 22, 2009 storm.

TL;DR: In this paper, GPS data derived from dual frequency receivers located at African equatorial and midlatitudes is used to study the solar wind effects on the Earth's environment and crucial practical impacts on technological systems.

TL;DR: In this article, the authors examine the spatial and vertical distributions of aerosols over the Arabian Sea and adjoining continents using multi-year data from MODIS and CALIPSO and explore the genesis of the above abnormal enhancement in AOD.

TL;DR: In this article, the authors present measurements of thermospheric neutral winds and temperatures measured by two Fabry-Perot interferometers (FPIs) operating in northeastern Brazil, in the equatorial region, over the period of September 2009 through June 2012.

TL;DR: In this paper, the authors study ionospheric scintillation on GNSS signals at equatorial latitudes to draw a climatological picture of the low latitude ionosphere in the Brazilian sector during the ascending phase of the upcoming 2013 solar maximum.

TL;DR: In this paper, the average values of ionosonde hmF2 data acquired from an African equatorial station have been used to determine vertical plasma drift (Vz ) measurements during period of low solar activity.

TL;DR: In this article, the authors proposed a differential inflation scheme and applied this technique to driver estimation for the Global Ionosphere-Thermosphere Model (GITM) using the Ensemble Adjustment Kalman Filter (EAKF), which is a part of the Data Assimilation Research Testbed (DART).

TL;DR: In this article, an inverse relationship has been established between BC and ABL height on a quantitative basis, and the observed diurnal and seasonal variations are examined in the light of local Atmospheric Boundary Layer dynamics and long range transport.

TL;DR: In this paper, the rate of change of TEC (R O T ) derived fluctuation index was used to study irregularities in the ionosphere at Franceville in Gabon (Lat.= −1.63°, Long.= 13.55°, Geomag.

TL;DR: The first detection of a descending layer of atomic potassium (K) in the thermosphere was made with the K Doppler lidar at the Arecibo Observatory in Puerto Rico (18.35°N; 66.75°W) as discussed by the authors.

TL;DR: In this article, total electron content (TEC) measurements (rate of TEC change, ROT) were used to examine the presence of ionospheric irregularities over four low-latitude stations in the African sector, a region that has been less studied.

TL;DR: In this paper, 489 sprite events have been observed with a TV frame rate video system in Central Europe from Sopron (47.68°N, 16.58°E, ∼230m MSL), Hungary between 2007 and 2009.

TL;DR: In this article, a method for calibrating SuperDARN interferometer data which reduces the systematic offsets in meteor echo height estimations is presented. But it is not practical to estimate the height of individual meteor echoes without interferometric information.

TL;DR: In this article, the authors examined the performances of NeQuick 2 and IRI-2007 ionospheric empirical models in describing the monthly median characteristics of the equatorial region ionosphere.

TL;DR: In this paper, the electric field variations produced by 80 cloud-to-ground lightning flashes in 9 different storms in S. Paulo, Brazil during the summers of 2009-2011 were analyzed.

TL;DR: In this article, the authors analyzed the main properties of a closed plasma ring around the Earth using the data of the THEMIS satellite mission, acquired between April 2007 and September 2011, and evaluated the contribution of the azimuthally symmetric part of the plasma ring to the Dst index for strong geomagnetic storms.

TL;DR: In this article, a global median model SMF2 (Satellite Model of the F2 layer) of the ionospheric F2-layer height maximum (hmF2), based on GPS radio-occultation data for low solar activity periods (F10.7Ao80), was proposed.

TL;DR: In this article, an interactive Auroral Precipitation Model (APM) parameterized by magnetic activity has been created, which yields a global distribution of electron precipitation and planetary patterns of both average electron energy and electron energy flux in different precipitation zones.

TL;DR: In this paper, the authors attributed the non-typical long lasting quasi-periodic (QP) VLF emissions to auto-oscillations of the cyclotron instability of the Earth's radiation belts.

TL;DR: In this article, a quasi-stationary three dimensional model of electric fields and currents in the conductor that includes the Earth's atmosphere and ionosphere is created, which is simpler regarding interpretation and explanation than two dimensional ones.