A5059758572- Precipitation Measurement and Analysis
- Meteorological Phenomena and Simulations
- Soil Moisture and Remote Sensing
- Climate variability and models
- Atmospheric aerosols and clouds
- Geography and Environmental Studies
- Flood Risk Assessment and Management
- Remote Sensing in Agriculture
- Radio Wave Propagation Studies
- Environmental and biological studies
- Geochemistry and Geologic Mapping
- Soil Geostatistics and Mapping
- Geographic Information Systems Studies
- Lightning and Electromagnetic Phenomena
- Remote Sensing and LiDAR Applications
- Fire effects on ecosystems
- Advanced Computational Techniques and Applications
- Hydrology and Drought Analysis
- Geophysics and Gravity Measurements
- Higher Education and Sustainability
- Tropical and Extratropical Cyclones Research
- Argentine historical studies
- Seismology and Earthquake Studies
- Atmospheric chemistry and aerosols
- Mosquito-borne diseases and control
Centro Nacional de Monitoramento e Alertas de Desastres Naturais
2011-2019
Ministério da Ciência e Tecnologia
2019
National Institute for Space Research
2002-2014
University of Birmingham
2004
CHUVA, meaning “rain” in Portuguese, is the acronym for Cloud Processes of Main Precipitation Systems Brazil: A Contribution to Cloud-Resolving Modeling and Global Measurement (GPM). The CHUVA project has conducted five field campaigns; sixth last campaign will be held Manaus 2014. primary scientific objective contribute understanding cloud processes, which represent one least understood components weather climate system. campaigns were designed investigate specific tropical regimes. first...
Os impactos da precipitação na qualidade água ao longo do rio Purus, localizado no estado Amazonas, foi investigado por meio de dados precipitação, estimada satélites, e informações sobre a temperatura água, condutividade, pH, turbidez, oxigênio dissolvido sólidos suspensos totais, adquiridas em quatro diferentes áreas rio. resultados mostraram correlação negativa entre turbidez positiva temperatura, dissolvido, totais pH. O uso solo, juntamente com o regime parecem ser os fatores principais...
Abstract It is known from previous studies that radar data assimilation can improve short-range forecasts of precipitation, mainly when radial wind and reflectivity are available. However, the authors’ experience assimilation, using three-dimensional variational (3DVAR) technique, produce spurious precipitation results large errors in position amount precipitation. One possible reason for problem attributed to lack proper balance dynamical microphysical fields. This work attempts minimize...
ABSTRACT Soil moisture is a main factor for the study of drought impacts on vegetation. Drought regional phenomenon and affects food security more than any other natural disaster. Currently, monitoring different types based indexes that standardize in temporal level allowing, thus, comparison water conditions areas. Therefore, order to assess impact soil during periods drought, Palmer Severity Index was estimated entire region territory. For this were used meteorological data (rainfall...
Abstract Ensembles of numerical model forecasts are interest to operational early warning forecasters as the spread ensemble provides an indication uncertainty alerts, and mean value is deemed outperform individual models. This paper explores two ensembles on a severe weather episode in Spain, aiming ascertain relative usefulness each one. One uses sensible choices physical parameterizations (precipitation microphysics, land surface physics, cumulus physics) while other follows perturbed...
CR Climate Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 26:139-149 (2004) - doi:10.3354/cr026139 Diurnal cycle of rainfall over Brazilian Amazon Carlos F. Angelis*, Glenn R. McGregor, Chris Kidd University Birmingham, School Geography, Earth and Environmental Sciences, Birmingham B15 2TT, UK *Email: angelis@cptec.inpe.br ABSTRACT: The characteristics were analysed using 3 yr h data...
Abstract. A polarimetric X-band radar has been deployed during one month (April 2011) for a field campaign in Fortaleza, Brazil, together with three additional laser disdrometers. The disdrometers are capable of measuring the raindrop size distributions (DSDs), hence making it possible to forward-model theoretical observables at point where instruments located. This set-up allows thoroughly test accuracy measurements as well algorithms that used correct data radome and rain attenuation. For...
Abstract Tropical Rainfall Measuring Mission precipitation radar data acquired during the period 1 January 1998 to 31 December 2000 over tropical and subtropical South America were used evaluate ability of PR2A25 algorithm in estimating modelling some rainfall characteristics near surface. Harmonic analysis applied 3 h mean rain rate images successfully modelled dynamics study area revealed extent propagation bands from western eastern Amazon towards its interior, east. It is suggested that...
This paper intends to briefly present some basic concepts on the microwave radiometry and radiometer calibration research in remote sensing applications demonstrate results analysis of cryogenic a ground-based currently deployed scientific campaigns Brazil.The equipment described this text operates at 22 -30 GHz 51 -59 frequency ranges uses as standard target cooled by liquid nitrogen.Since an accurate (with observation errors below 0.5 K) is important provide confidence retrieval vertical...
The temporal evolution of L-band microwave backscatter for several land cover types in the Tapajos National Forest is analysed using JERS-1. Five images were acquired from 1993 to 1997. Samples studied identified after analysis a Landsat Thematic Mapper (TM) dataset 12 obtained 1984 1999. following investigated: bare soil, agriculture, pastures, forest regrowth 1 23-year-old and primary forest. Backscatter behaviour stands influenced by previous use human impacts such as fire selective...
Amongst the suspended particles in atmosphere, water vapor and fog are most influencing parameters when microwave propagates through atmosphere.Attenuation due to these along with rain considered detail, over Kolkata (22 0 N), India Cachoeira Paulista S), Brazil.Rain, perhaps is be worst offender propagation.The patterns Kolkata, Brazil U.K compared hence attenuation also.
Abstract This paper discusses the basis for a new rainfall estimation method using geostationary infrared and visible data. The precipitation radar on board Tropical Rainfall Measuring Mission satellite is used to train algorithm presented (which of method) further intercomparison. uses daily Geostationary Operational Environmental Satellite infrared–visible (IR–VIS) cloud classifications together with radiative evolution properties clouds over life cycle mesoscale convective systems (MCSs)...
The integrated water vapour content of the atmosphere is measured by a ground-based radiometer at 22.234 GHz Instituto Nacional de Pesquisas Espaciais (INPE), Brazil. data set has been partitioned into two sets: one for no cloud and other cloudy conditions. attenuation (dB) under condition was always found to vary within 1.0–1.5 dB, except around 1400 hrs (local time) through 1800 time), it reached value more than 1.5 dB with maximum 1700. This in conformity theoretically calculated values...
The present technical article refers to the methodology, application and evaluation of first computational tool for diagnosis prognosis flash floods, based on rain thresholds, which was implemented in platform National Center Monitoring Early Warning Natural Disasters (Cemaden). From historical series river levels rainfall data, a procedure developed construct relationships that indicate amount necessary increase probability floods occurring up twentyfour hours. Rainfall data from gauges,...
Meteorological satellites provide a unique opportunity to obtain thermodynamic profiles in regions of the globe that do not have dense meteorological upper-air station network, such as South America. Temperature and mixing ratio were retrieved every hour with spatial resolution 10 km over America from July 2007 February 2009 using radiances Geostationary Operational Environmental Satellite (GOES-10). The GOES-10 retrieval algorithm for was developed by Cooperative Institute Mesoscale Studies...
This study describes an operation tool for severe storm nowcasting using GOES satellite images and cloud‐ground lightning data. A relationship was established between atmospheric discharges penetrative convective clouds, combining Infrared Water Vapor channels from the GOES‐10 geostationary with data Brazilian Integrated Lightning Detection Network (RINDAT). The difference water vapor infrared brightness temperature is a tracer of penetrating clouds in stratosphere. From this electrical...