Results 1 to 10 of about 1,126,883 (314)

Case analysis of diurnal stratospheric Rayleigh temperature and atmospheric fluctuations based on 589 nm lidar

open access: yesEarth and Planetary Physics
Observational analysis of the Earth’s stratospheric temperature structure and its dynamical behavior is of great significance for atmospheric dynamics research.
ZhiFang Chen   +7 more
doaj   +1 more source

Measuring segregation: an activity space approach [PDF]

open access: yesJournal of Geographical Systems, 2010
While the literature clearly acknowledges that individuals may experience different levels of segregation across their various socio-geographical spaces, most measures of segregation are intended to be used in the residential space. Using spatially aggregated data to evaluate segregation in the residential space has been the norm and thus individual's ...
David W. S. Wong, Shih-Lung Shaw
openaire   +4 more sources

The Chinese Radio Telescope Array for Interplanetary Scintillation Monitoring

open access: yesSpace Weather
Solar flares, coronal mass ejections (CMEs) and enegertic particles, etc., are the driving sources that may cause catastrophic space weathers. It is desirable to obtain information of solar eruptions like flares and CMEs, etc., propagating from the Sun ...
Yihua Yan   +10 more
doaj   +1 more source

Optimizing calibration of fluxgate magnetometer offsets using magnetic holes in the earth’s magnetosheath

open access: yesEarth, Planets and Space
The offset of the fluxgate magnetometer (FGM) drifts slowly with time and temperature, requiring regular in-flight calibration. Recent studies utilizing magnetic holes have optimized calibration error to ~ 0.3 nT in the solar wind, but an order larger in
Xiaochen Gou   +9 more
doaj   +1 more source

A Deep Learning Approach for Removing Multi-Source Transient Interference in Satellite Magnetic Field Measurement

open access: yesSensors
Magnetic field measurements are essential for space science missions but are often contaminated by transient stray fields from spacecraft subsystems such as electrical and control units.
Ning Li   +4 more
doaj   +1 more source

Extreme concentric gravity waves observed in the mesosphere and thermosphere regions over southern Brazil associated with fast-moving severe thunderstorms [PDF]

open access: yesAtmospheric Chemistry and Physics
Three groups of intense concentric gravity waves (CGWs) lasting over 10 h were observed by an airglow imager at the Southern Space Observatory (SSO) in São Martinho da Serra (29.44° S, 53.82° W) in southern Brazil on 17–18 September 2023.
Q. Li   +10 more
doaj   +1 more source

Predicting space climate change [PDF]

open access: yes, 2011
The recent decline in the open magnetic flux of the Sun heralds the end of the Grand Solar Maximum (GSM) that has persisted throughout the space age, during which the largest‐fluence Solar Energetic Particle (SEP) events have been rare and Galactic ...
L. Barnard   +13 more
core   +1 more source

A semi-empirical approach to simulating the Dst index in global MHD models of Earth’s magnetosphere

open access: yesEarth and Planetary Physics
The Dst index has been commonly used to measure the geomagnetic effectiveness of magnetic storm events for several decades. Based on Burton’s empirical Dst model and the global magneto-hydrodynamic (MHD) simulation of Earth’s magnetosphere, here we ...
JiaWen Yue   +3 more
doaj   +1 more source

Multi‐Technique Study of the Thermospheric Wind Responses to the November 3–4, 2021 Storm

open access: yesSpace Weather
The responses of thermospheric winds at mid and low latitudes to the intense geomagnetic storm of November 3–4, 2021, are examined using multi‐technique observations and simulations with the Thermosphere Ionosphere Electrodynamics General Circulation ...
Xinmiao Xia   +7 more
doaj   +1 more source

Examining the effects of residential location and stated residential preferences on activity space size and centricity [PDF]

open access: yes, 2021
Activity spaces are used to capture patterns in urban mobility and to portray the spatial distribution of day-to-day activities. The literature exploring variation in individual activity spaces identifies strong associations between several activity ...
Kajosaari, Anna   +3 more
core   +1 more source

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