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Chemical weathering rate, denudation rate, and atmospheric and soil CO2 consumption of Parana flood basalts in Sao Paulo State, Brazil
(Elsevier B.V., 2015-03-15)
The chemical weathering rate and atmospheric/soil CO2 consumption of Parana flood basalts in the Preto Stream basin, Sao Paulo State, Brazil, were evaluated using major elements as natural tracers. Surface and rain water ...
GPS/VRS positioning using atmospheric modeling
(Springer Heidelberg, 2014)
Lower ionosphere monitoring by the South America VLF Network (SAVNET): C region occurrence and atmospheric temperature variability
(American Geophysical Union, 2013-10)
Daily profiles of phase measurements as observed on fixed VLF paths generally show a transient phase advance, followed by a phase delay, for about 90 min after sunrise hours. This is indicative of a reflecting ionospheric ...
Effect of Prompt Particle Events on OLCI Ocean Color Imagery in the South Atlantic Anomaly: Detection and Removal
(Institute of Electrical and Electronics Engineers, 2018-10)
It has been found that cosmic rays and massive charged particles trapped in the magnetosphere or arriving from the sun might produce spike noise over the dark offset signal coming from charge-coupled devices (CCDs) on optic ...
Chemical weathering rates and atmospheric/soil CO2 consumption of igneous and metamorphic rocks under tropical climate in southeastern Brazil
(2016-12-02)
Chemical weathering rates and atmosphere/soil CO2 consumption of igneous and metamorphic rocks under tropical climate in southeastern Brazil were evaluated using the chemical composition of surface waters and fresh rocks ...
Correção de turbulência: óptica adaptativa
(Universidade Tecnológica Federal do ParanáCuritibaBrasilCurso de Engenharia de Controle e AutomaçãoUTFPR, 2018-02-08)
When taking astronomical photographs it is needed a long exposure with low brightness. The atmospheric turbulence interferes on the light wavefront coming from celestial bodies. It is possible to correct this distortion ...
An application of neural network technique to correct the dome temperature effects on pyrgeometer measurements
(Amer Meteorological Soc, 2006-01-01)
This work describes an application of a multilayer perceptron neural network technique to correct dome emission effects on longwave atmospheric radiation measurements carried out using an Eppley Precision Infrared Radiometer ...