نتایج جستجو برای: weather stations

تعداد نتایج: 73801  

2014
Xin Yang Zhanqing Li

This study analyzes 15 years of Tropical Rainfall Measuring Mission (TRMM) satellite data, together with surface observations of thunderstorms and visibility, to study trends and relationships between aerosols and thunderstorms in southeast China. TRMM data used are from the lightning imaging sensor (LIS) and the precipitation radar (PR). Surface data are human-observed thunderstormoccurrence a...

2017
Kevin P. Gallo David R. Easterling Thomas C. Peterson

The diurnal temperature range (DTR) at weather observation stations that make up the U.S. Historical Climatology Network was evaluated with respect to the predominant land uselland cover associated with the stations within three radii intervals ( 100, 1000, and 10 000 m) of the stations. Those stations that were associated with predominantly rural land uselland cover (LULC) usually displayed th...

Journal: :Atmospheric Research 2022

Analysis of the variation potential gradient (PG) at ground level is important to monitor global electric circuit and different solar geophysical phenomena affecting it. However, this challenging since several local factors (e.g., meteorological) produce perturbations in gradient. Time series spectral analysis PG stations can help minimise effects so that may be more clearly observed. In work, ...

Journal: :Int. J. Communication Systems 2006
Nedo Celandroni Franco Davoli Erina Ferro Alberto Gotta

Two control schemes, based on cross-layer adaptation and a hierarchical parametric optimization of the bandwidth allocation, are described and investigated in a satellite network environment, in the presence of both real-time and best-effort traffic flows. A number of earth stations (traffic stations) operate in different weather conditions, with different levels of fade, which affect the trans...

2017
Fan Ye

Adverse weather conditions, particularly those with low visibility, are critical to the driving tasks. However, the direct relationship between visibility distances and traffic flow/roadway safety is uncertain due to the limitation of visibility data availability. The recent growth of deployment of Road Weather Information Systems (RWIS) makes segment-specific visibility information available w...

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