A5018097183- Climate variability and models
- Meteorological Phenomena and Simulations
- Atmospheric and Environmental Gas Dynamics
- Tropical and Extratropical Cyclones Research
- Plant Water Relations and Carbon Dynamics
- Atmospheric aerosols and clouds
- Oceanographic and Atmospheric Processes
- Atmospheric chemistry and aerosols
- Precipitation Measurement and Analysis
- Solar Radiation and Photovoltaics
- Ocean Waves and Remote Sensing
- Marine and coastal ecosystems
- Malaria Research and Control
- Geophysics and Gravity Measurements
- Atmospheric Ozone and Climate
- Coastal and Marine Dynamics
- Arctic and Antarctic ice dynamics
- Geology and Paleoclimatology Research
- Mosquito-borne diseases and control
- Remote Sensing in Agriculture
- Ecosystem dynamics and resilience
- Distributed and Parallel Computing Systems
- Advanced Computational Techniques and Applications
- Viral Infections and Vectors
- Coastal and Marine Management
National Institute for Space Research
2011-2023
Universidad de Cantabria
2014
Abstract This article describes the main features of Brazilian Global Atmospheric Model (BAM), analyses its performance for tropical rainfall forecasting, and sensitivity to convective scheme horizontal resolution. BAM is new global atmospheric model Center Weather Forecasting Climate Research [Centro de Previsão Tempo e Estudos Climáticos (CPTEC)], which includes a dynamical core state-of-the-art parameterization schemes. BAM’s incorporates monotonic two-time-level semi-Lagrangian scheme,...
Abstract Aerosol particles from forest fire events in the Amazon can be effectively transported to urban areas southeastern South America, thus affecting air quality over those regions. A combination of observational data and a comprehensive modeling system capable anticipating acute pollution episodes is therefore required. new predictive framework for smoke dispersion America has been developed based on Weather Research Forecasting with Chemistry community (WRF-Chem) model. Two experiments...
This study presents novel insight into the mechanisms of Atlantic Meridional Overturning Circulation (AMOC) reduction and its recovery under a warmer climate scenario. An one-thousand-year-long numerical simulation global coupled ocean-ice-atmosphere model, subjected to stationary atmospheric radiative forcing, depict coherent picture Arctic sea ice melting as trigger for initial AMOC reduction, along with decreases in northward fluxes salt heat. Further atmospheric-driven ocean processes...
Abstract The Koppen–Trewartha (K–T) classification is used to investigate the biomes change in future climate over South America (SA). For middle (2035–2060) and end (2075–2100) of 21st century mean ensemble Regional Climate Model version 4 simulations for Representative Concentration Pathway 8.5 scenario are presented. global‐coupled models Coupled Intercomparison Project Phase 5 drive members period 1970–2100 using different physics configurations. delta approach applied filter out bias...
The impact of global warming on the aridity in South America (SA) is investigated. For this purpose, methodology for generating surrogate climate-change scenarios with a RCM employed. present climate (CTRL) initialized and driven by ECMWF/ERA-Interim reanalysis data. Two indices are used: Budyko UNEP indices. results CTR agreement other model studies which indicate future warming; rainfall increases southeastern America, Ecuador Peru decreases central eastern Amazon. In general reproduces...
Abstract. The main features of climate change patterns, as simulated by the coupled ocean–atmosphere version 2.5 Brazilian Earth System Model (BESM), are compared with those 25 other CMIP5 models, focusing on temperature, precipitation, atmospheric circulation, and radiative feedbacks. sensitivity to quadrupling CO2 concentration was investigated via two methods: linear regression (Gregory et al., 2004) kernels (Soden Held, 2006; Soden 2008). Radiative from both National Center for...
Abstract The ability of the Regional Climate Model v4 (RegCM4) to simulate surface radiation budget and hydrological balance variables over South America have been evaluated. For this purpose, a 34-year long simulation was carried out with regional climate model RegCM4 on CORDEX domain. is forcing by ERA-Interim reanalysis. results show that simulates main patterns associated in four seasons year compared observations (CLARA2 CRU/PERSIANN). However, cloudiness variables: Cloud Fraction Cover...
Abstract The regional Eta workstation (WS) model with horizontal resolution of 40 km has been integrated over South America for January 2003. NCEP–DOE Reanalysis II was used initial and lateral boundary conditions. comparison the model-simulated satellite-derived values monthly mean incident solar radiation at surface demonstrates that former are larger by 20%–30% entire region. To improve flux representation in model, a new scheme implemented it. An offline original schemes detailed...
Abstract. The main features of climate change patterns, as simulated by the coupled ocean-atmosphere version 2.5 Brazilian Earth System Model (BESM-OA2.5) are contrasted with those other 25 CMIP5 models, focusing on temperature, precipitation and atmospheric circulation. sensitivity to quadrupling CO2 concentration is investigated from two techniques: Gregory et al. (2004) Radiative Kernel (Soden Held, 2006; Soden al., 2008) methods. kernels both NCAR GFDL used in order decompose feedback...
Abstract. In the current work we present six hindcast Weather Research and Forecasting (WRF) simulations for EURO-CORDEX domain with different configurations in microphysics, convection radiation time period 1990–2008. All regional model are forced by ERA-Interim reanalysis have same spatial resolution (0.44°). These evaluated surface temperature, precipitation, short- longwave downward at total cloud cover. The analysis of WRF ensemble indicates systematic biases both temperature...
Abstract. Characteristics of quasi-stationary (QS) waves in the Southern Hemisphere are discussed using 49 years (1950–1998) NCEP/NCAR reanalysis data. A comparison between stationary wave amplitudes and phases recent data (1979–1998) entire showed that differences not large can be used for study. Using it is found amplitude QS 1 has two maxima upper atmosphere, one at 30°S other 55°S. 2 3 have much less amplitude. Monthly variation shows highest October, particularly troposphere...
A diagnosis of rainfall over South America (SA) during the 1997/98 El Niño year is made examining roles water vapor transport and stationary waves. It found that low-level jet (LLJ) on eastern side central Andes stronger event transports more moisture. This seems to be source for higher southeast SA noted years. calculation three-dimensional wave activity (Fs) 1997 1998 showed in summer 1996/97 waves propagate poleward eastward from midlatitudes into latitudes west south then equatorward...
Corresponding author address: Dr. V. Brahmananda Rao, INPE, CP 12201-970, Sao Jose dos Campos, 12201-970 Paulo, Brazil.Email: vbrao@met.inpe.br
Wind and atmospheric stability are fundamental for aerospace research development activities at the Alcântara Launch Center, situated in Maranhão Brazilian state. The physical processes related to these meteorological parameters during dry season well known. However, there is still gap concerning rainy season. data obtained anemometric tower here studied considering vertical profiles of wind temperature, Richardson bulk number. mechanical characteristics showed weaker gradient...