Multi-instrument ground-based observations of a travelling convection vortices event

Travelling wave convection in a rotating layer

Synthesis Analysis of One Severe Convection Precipitation Event in Jiangsu Using Ground-Based GPS Technology

Global positioning system (GPS) detection technology has several advantageous characteristics (i.e., all-weather applications, high accuracy, high spatial and temporal resolution, and low cost), and GPS tracking and monitoring techniques for water vapor have developed rapidly in recent years. The GPS-precipitable water vapor (GPS-PWV), obtained through inversion using this technology can reflec...

4-dimensional Variational Assimilation of Ground-based Microwave Observations during a Winter Fog Event

1. Introduction To measure the vertical profiles of temperature and water vapor that are essential for modeling atmospheric processes, radiosondes are traditionally the privileged way to obtain upper-air information. Radiosondes, however, present certain limitations. It typically takes 40 minutes for a radiosonde to ascend through the troposphere and about 2 hours to ascend to full height. Cost...

Multi-Observations Initial Orbit Determination based on Angle-Only Measurements

A new approach with the ability to use the multiple observations based on the least square approach has been proposed for initial orbit determination. This approach considers the Earth’s Oblateness by using the developed Lagrange coefficients. The efficiency of the proposed method has been tested in two scenarios. The first scenario is to use the simulated and the second one is to utilize the r...

Travelling circular waves in axisymmetric rotating convection

Rayleigh–Bénard convection in a finite rotating cylinder of moderate aspect ratio (radius four times the depth) is investigated numerically for a fluid of Prandtl number equal to 7 (corresponding essentially to water). We consider the effects of rotation from both the Coriolis force and the centrifugal force and find that the centrifugal force plays a significant dynamic role. In this initial s...