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Mostrando ítems 101-110 de 240
Análise de superfície de tendência aplicada à chuva, medida por radar meteorológico, nas regiões de Assis e Piracicaba, SP
(2008-12-01)
This paper presents the results from lineal trend surface analysis technique application. The purpose was to detect positive and negative anomalies in the rain measure distribution obtained by the meteorological radar ...
A statistical comparison of VHF techniques to study clear-air vertical velocities in the lower atmosphere using the Jicamarca radar
(American Geophysical Union, 1998-11)
We compare two types of VHF vertical velocity measurement techniques using a special configuration of the Jicamarca 50-MHz radar antenna. Zenith (vertically directed single-beam) techniques and spaced antenna (SA) techniques ...
On the characteristics of 150-km echoes observed in the Brazilian longitude sector by the 30 MHz São Luís radar
(European Geosciences Union (EGU), 2011-10-28)
We present long-overdue details about the intensity and spectral characteristics of 150-km echoes observed by the Sao Lu ıs radar in Brazil. The Sao Lu ıs observations show that the echoes usually come from multiple ...
Gravity-wave generation by thunderstorms observed with a vertically-pointing 430 MHz radar
(American Geophysical Union, 1982-05)
During September of 1979, the Arecibo Observatory 430 MHz Doppler radar was used to study the upper troposphere and lower stratosphere during thunderstorm activity in the afternoon hours. It was found that when the olouds ...
Mesospheric wind estimation with the Jicamarca MST radar using spectral mainlobe identification
(American Geophysical Union, 2019-12)
MST (mesosphere, stratosphere, troposphere) radar observations at Jicamarca use four antenna beams, one vertical, others tilted to the east, west, and south, to detect the scattered pulse returns from mesospheric heights ...
Cuantificación de lluvias usando el radar perfilador de banda Ka MIRA 35C
(Universidad Nacional José Faustino Sánchez Carrión, 2018)
En el presente trabajo se desarrolla un algoritmo para estimación de la lluvia a partir de datos del radar perfilador de nubes y precipitación, ubicado en el Laboratorio de Microfísica Atmosférica y Radiación – LAMAR en ...
Convective Storm Life Cycle and Environments near the Sierras de Córdoba, Argentina
(American Meteorological Society, 2018-08)
Satellite observations have revealed that some of the world's most intense deep convective storms occur near the Sierras de Córdoba, Argentina, South America. A C-band, dual-polarization Doppler weather radar recently ...
Iniciação de tempestades convectivas em um ambiente tropical úmido
(Universidade Estadual Paulista (Unesp), 2008-06-09)
Para determinar como se inicia a convecção na região sudoeste da Amazônia, foram analisados dados do TRMM/LBA (Tropical Rainfall Measuring Mission / Large-scale Biosphere Atmosphere). A base para determinar onde e quando ...